pbxProject.js

/**
 Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements.  See the NOTICE file
 distributed with this work for additional information
 regarding copyright ownership.  The ASF licenses this file
 to you under the Apache License, Version 2.0 (the
 'License'); you may not use this file except in compliance
 with the License.  You may obtain a copy of the License at
 http://www.apache.org/licenses/LICENSE-2.0
 Unless required by applicable law or agreed to in writing,
 software distributed under the License is distributed on an
 'AS IS' BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 KIND, either express or implied.  See the License for the
 specific language governing permissions and limitations
 under the License.
 */

var util = require('util'),
    f = util.format,
    EventEmitter = require('events').EventEmitter,
    $path = require('path'),
    $uuid = require('uuid'),
    fork = require('child_process').fork,
    pbxWriter = require('./pbxWriter'),
    pbxFile = require('./pbxFile'),
    constants = require('./constants'),
    fs = require('fs'),
    parser = require('./parser/pbxproj'),
    plist = require('simple-plist'),
    COMMENT_KEY = /_comment$/,
    NO_SPECIAL_SYMBOLS = /^[a-zA-Z0-9_\.\$]+\.[a-zA-Z]+$/,
    isSourceFileType = constants.isSourceFileType,
    isHeaderFileType = constants.isHeaderFileType,
    isResource = constants.isResource,
    isEntitlementFileType = constants.isEntitlementFileType,
    isAssetFileType = constants.isAssetFileType,
    isPlistFileType = constants.isPlistFileType,
    isModuleMapFileType = constants.isModuleMapFileType;

function pbxProject(filename) {
    if (!(this instanceof pbxProject))
        return new pbxProject(filename);

    this.filepath = $path.resolve(filename)
}

util.inherits(pbxProject, EventEmitter)

pbxProject.prototype.parse = function(cb) {
    var worker = fork(__dirname + '/parseJob.js', [this.filepath])

    worker.on('message', function(msg) {
        if (msg.name == 'SyntaxError' || msg.code) {
            this.emit('error', msg);
        } else {
            this.hash = msg;
            this.emit('end', null, msg)
        }
    }.bind(this));

    if (cb) {
        this.on('error', cb);
        this.on('end', cb);
    }

    return this;
}

pbxProject.prototype.parseSync = function() {
    var file_contents = fs.readFileSync(this.filepath, 'utf-8');

    this.hash = parser.parse(file_contents);
    return this;
}

pbxProject.prototype.writeSync = function(options) {
    this.writer = new pbxWriter(this.hash, options);
    return this.writer.writeSync();
}

pbxProject.prototype.allUuids = function() {
    var sections = this.hash.project.objects,
        uuids = [],
        section;

    for (var key in sections) {
        section = sections[key]
        uuids = uuids.concat(Object.keys(section))
    }

    uuids = uuids.filter(function(str) {
        return !COMMENT_KEY.test(str) && str.length == 24;
    });

    return uuids;
}

pbxProject.prototype.generateUuid = function() {
    var id = $uuid.v4()
        .replace(/-/g, '')
        .substr(0, 24)
        .toUpperCase()

    if (this.allUuids().indexOf(id) >= 0) {
        return this.generateUuid();
    } else {
        return id;
    }
}

pbxProject.prototype.addPluginFile = function(path, opt) {
    var file = new pbxFile(path, opt);

    file.plugin = true; // durr
    correctForPluginsPath(file, this);

    // null is better for early errors
    if (this.hasFile(file.path)) return null;

    file.fileRef = this.generateUuid();

    this.addToPbxFileReferenceSection(file);    // PBXFileReference
    this.addToPluginsPbxGroup(file);            // PBXGroup

    return file;
}

pbxProject.prototype.removePluginFile = function(path, opt) {
    var file = new pbxFile(path, opt);
    correctForPluginsPath(file, this);

    this.removeFromPbxFileReferenceSection(file);    // PBXFileReference
    this.removeFromPluginsPbxGroup(file);            // PBXGroup

    return file;
}

pbxProject.prototype.addProductFile = function(targetPath, opt) {
    var file = new pbxFile(targetPath, opt);

    file.includeInIndex = 0;
    file.fileRef = this.generateUuid();
    file.target = opt ? opt.target : undefined;
    file.group = opt ? opt.group : undefined;
    file.uuid = this.generateUuid();
    file.path = file.basename;

    this.addToPbxFileReferenceSection(file);
    this.addToProductsPbxGroup(file);                // PBXGroup

    return file;
}

pbxProject.prototype.removeProductFile = function(path, opt) {
    var file = new pbxFile(path, opt);

    this.removeFromProductsPbxGroup(file);           // PBXGroup

    return file;
}

/**
 *
 * @param path {String}
 * @param opt {Object} see pbxFile for avail options
 * @param group {String} group key
 * @returns {Object} file; see pbxFile
 */
pbxProject.prototype.addSourceFile = function (path, opt, group) {
    var file;
    if (group) {
        file = this.addFile(path, group, opt);
    }
    else {
        file = this.addPluginFile(path, opt);
    }

    if (!file) return false;

    file.target = opt ? opt.target : undefined;
    file.uuid = this.generateUuid();

    this.addToPbxBuildFileSection(file);        // PBXBuildFile
    this.addToPbxSourcesBuildPhase(file);       // PBXSourcesBuildPhase

    return file;
}

/**
 *
 * @param path {String}
 * @param opt {Object} see pbxFile for avail options
 * @param group {String} group key
 * @returns {Object} file; see pbxFile
 */
pbxProject.prototype.removeSourceFile = function (path, opt, group) {
    var file;
    if (group) {
        file = this.removeFile(path, group, opt);
    }
    else {
        file = this.removePluginFile(path, opt);
    }
    file.target = opt ? opt.target : undefined;
    this.removeFromPbxBuildFileSection(file);        // PBXBuildFile
    this.removeFromPbxSourcesBuildPhase(file);       // PBXSourcesBuildPhase

    return file;
}

/**
 *
 * @param path {String}
 * @param opt {Object} see pbxFile for avail options
 * @param group {String} group key
 * @returns {Object} file; see pbxFile
 */
pbxProject.prototype.addHeaderFile = function (path, opt, group) {
    if (group) {
        return this.addFile(path, group, opt);
    }
    else {
        return this.addPluginFile(path, opt);
    }
}

/**
 *
 * @param path {String}
 * @param opt {Object} see pbxFile for avail options
 * @param group {String} group key
 * @returns {Object} file; see pbxFile
 */
pbxProject.prototype.removeHeaderFile = function (path, opt, group) {
    if (group) {
        return this.removeFile(path, group, opt);
    }
    else {
        return this.removePluginFile(path, opt);
    }
}

/**
 *
 * @param path {String}
 * @param opt {Object} see pbxFile for avail options
 * @param group {String} group key
 * @returns {Object} file; see pbxFile
 */
pbxProject.prototype.addResourceFile = function(path, opt, group) {
    opt = opt || {};

    var file;

    if (opt.plugin) {
        file = this.addPluginFile(path, opt);
        if (!file) return false;
    } else {
        file = new pbxFile(path, opt);
        if (this.hasFile(file.path)) return false;
    }

    file.uuid = this.generateUuid();
    file.target = opt ? opt.target : undefined;

    if (!opt.plugin) {
        correctForResourcesPath(file, this);
        file.fileRef = this.generateUuid();
    }

    if (!opt.variantGroup) {
        this.addToPbxBuildFileSection(file);        // PBXBuildFile
        this.addToPbxResourcesBuildPhase(file);     // PBXResourcesBuildPhase
    }

    if (!opt.plugin) {
        this.addToPbxFileReferenceSection(file);    // PBXFileReference
        if (group) {
            if (this.getPBXGroupByKey(group)) {
                this.addToPbxGroup(file, group);        //Group other than Resources (i.e. 'splash')
            }
            else if (this.getPBXVariantGroupByKey(group)) {
                this.addToPbxVariantGroup(file, group);  // PBXVariantGroup
            }
        }
        else {
            this.addToResourcesPbxGroup(file);          // PBXGroup
        }

    }

    return file;
}

/**
 *
 * @param path {String}
 * @param opt {Object} see pbxFile for avail options
 * @param group {String} group key
 * @returns {Object} file; see pbxFile
 */
pbxProject.prototype.removeResourceFile = function(path, opt, group) {
    var file = new pbxFile(path, opt);
    file.target = opt ? opt.target : undefined;

    correctForResourcesPath(file, this);

    this.removeFromPbxBuildFileSection(file);        // PBXBuildFile
    this.removeFromPbxFileReferenceSection(file);    // PBXFileReference
    if (group) {
        if (this.getPBXGroupByKey(group)) {
            this.removeFromPbxGroup(file, group);        //Group other than Resources (i.e. 'splash')
        }
        else if (this.getPBXVariantGroupByKey(group)) {
            this.removeFromPbxVariantGroup(file, group);  // PBXVariantGroup
        }
    }
    else {
        this.removeFromResourcesPbxGroup(file);          // PBXGroup
    }
    this.removeFromPbxResourcesBuildPhase(file);     // PBXResourcesBuildPhase

    return file;
}

pbxProject.prototype.addFramework = function(fpath, opt) {
    var customFramework = opt && opt.customFramework == true;
    var link = !opt || (opt.link == undefined || opt.link);    //defaults to true if not specified
    var embed = opt && opt.embed;                              //defaults to false if not specified

    if (opt) {
      delete opt.embed;
    }

    var file = new pbxFile(fpath, opt);

    file.uuid = this.generateUuid();
    file.fileRef = this.generateUuid();
    file.target = opt ? opt.target : undefined;

    if (this.hasFile(file.path)) return false;

    this.addToPbxBuildFileSection(file);        // PBXBuildFile
    this.addToPbxFileReferenceSection(file);    // PBXFileReference
    this.addToFrameworksPbxGroup(file);         // PBXGroup

    if (link) {
      this.addToPbxFrameworksBuildPhase(file);    // PBXFrameworksBuildPhase
    }

    if (customFramework) {
        this.addToFrameworkSearchPaths(file);

        if (embed) {
          opt.embed = embed;
          var embeddedFile = new pbxFile(fpath, opt);

          embeddedFile.uuid = this.generateUuid();
          embeddedFile.fileRef = file.fileRef;

          //keeping a separate PBXBuildFile entry for Embed Frameworks
          this.addToPbxBuildFileSection(embeddedFile);        // PBXBuildFile

          this.addToPbxEmbedFrameworksBuildPhase(embeddedFile); // PBXCopyFilesBuildPhase

          return embeddedFile;
        }
    }

    return file;
}

pbxProject.prototype.removeFramework = function(fpath, opt) {
    var embed = opt && opt.embed;

    if (opt) {
      delete opt.embed;
    }

    var file = new pbxFile(fpath, opt);
    file.target = opt ? opt.target : undefined;

    this.removeFromPbxBuildFileSection(file);          // PBXBuildFile
    this.removeFromPbxFileReferenceSection(file);      // PBXFileReference
    this.removeFromFrameworksPbxGroup(file);           // PBXGroup
    this.removeFromPbxFrameworksBuildPhase(file);      // PBXFrameworksBuildPhase

    if (opt && opt.customFramework) {
        this.removeFromFrameworkSearchPaths(file);
    }

    opt = opt || {};
    opt.embed = true;
    var embeddedFile = new pbxFile(fpath, opt);

    embeddedFile.fileRef = file.fileRef;

    this.removeFromPbxBuildFileSection(embeddedFile);          // PBXBuildFile
    this.removeFromPbxEmbedFrameworksBuildPhase(embeddedFile); // PBXCopyFilesBuildPhase

    return file;
}


pbxProject.prototype.addCopyfile = function(fpath, opt) {
    var file = new pbxFile(fpath, opt);

    // catch duplicates
    if (this.hasFile(file.path)) {
        file = this.hasFile(file.path);
    }

    file.fileRef = file.uuid = this.generateUuid();
    file.target = opt ? opt.target : undefined;

    this.addToPbxBuildFileSection(file);        // PBXBuildFile
    this.addToPbxFileReferenceSection(file);    // PBXFileReference
    this.addToPbxCopyfilesBuildPhase(file);     // PBXCopyFilesBuildPhase

    return file;
}

pbxProject.prototype.pbxCopyfilesBuildPhaseObj = function(target) {
    return this.buildPhaseObject('PBXCopyFilesBuildPhase', 'Copy Files', target);
}

pbxProject.prototype.addToPbxCopyfilesBuildPhase = function(file) {
    var sources = this.buildPhaseObject('PBXCopyFilesBuildPhase', 'Copy Files', file.target);
    sources.files.push(pbxBuildPhaseObj(file));
}

pbxProject.prototype.removeCopyfile = function(fpath, opt) {
    var file = new pbxFile(fpath, opt);
    file.target = opt ? opt.target : undefined;

    this.removeFromPbxBuildFileSection(file);        // PBXBuildFile
    this.removeFromPbxFileReferenceSection(file);    // PBXFileReference
    this.removeFromPbxCopyfilesBuildPhase(file);    // PBXFrameworksBuildPhase

    return file;
}

pbxProject.prototype.removeFromPbxCopyfilesBuildPhase = function(file) {
    var sources = this.pbxCopyfilesBuildPhaseObj(file.target);
    for (var i in sources.files) {
        if (sources.files[i].comment == longComment(file)) {
            sources.files.splice(i, 1);
            break;
        }
    }
}

pbxProject.prototype.addStaticLibrary = function(path, opt) {
    opt = opt || {};

    var file;

    if (opt.plugin) {
        file = this.addPluginFile(path, opt);
        if (!file) return false;
    } else {
        file = new pbxFile(path, opt);
        if (this.hasFile(file.path)) return false;
    }

    file.uuid = this.generateUuid();
    file.target = opt ? opt.target : undefined;

    if (!opt.plugin) {
        file.fileRef = this.generateUuid();
        this.addToPbxFileReferenceSection(file);    // PBXFileReference
    }

    this.addToPbxBuildFileSection(file);        // PBXBuildFile
    this.addToPbxFrameworksBuildPhase(file);    // PBXFrameworksBuildPhase
    this.addToLibrarySearchPaths(file);        // make sure it gets built!

    return file;
}

// helper addition functions
pbxProject.prototype.addToPbxBuildFileSection = function(file) {
    var commentKey = f("%s_comment", file.uuid);

    this.pbxBuildFileSection()[file.uuid] = pbxBuildFileObj(file);
    this.pbxBuildFileSection()[commentKey] = pbxBuildFileComment(file);
}

pbxProject.prototype.removeFromPbxBuildFileSection = function(file) {
    var fileUuid;

    for (fileUuid in this.pbxBuildFileSection()) {
        if (this.pbxBuildFileSection()[fileUuid].fileRef_comment == file.basename) {
            file.uuid = fileUuid;
            this.removeFromPbxBuildFileSectionByUuid(fileUuid);
        }
    }
}

pbxProject.prototype.removeFromPbxBuildFileSectionByUuid = function(itemUuid) {
    var buildSection = this.pbxBuildFileSection();
    removeItemAndCommentFromSectionByUuid(buildSection, itemUuid);
}

pbxProject.prototype.findMainPbxGroup = function () {
    var groups = this.hash.project.objects['PBXGroup'];
    var candidates = [];
    for (var key in groups) {
        if (!groups[key].path && !groups[key].name && groups[key].isa) {
            candidates.push(groups[key]);
        }
    }
    if (candidates.length == 1) {
        return candidates[0];
    }

    return null;
}

pbxProject.prototype.addPbxGroup = function (filePathsArray, name, path, sourceTree, opt) {
    opt = opt || {};
    var srcRootPath = $path.dirname($path.dirname(this.filepath));
    var oldGroup = this.pbxGroupByName(name);
    if (oldGroup) {
        this.removePbxGroup(name, path);
    }

    var groups = this.hash.project.objects['PBXGroup'],
        pbxGroupUuid = opt.uuid || this.generateUuid(),
        commentKey = f("%s_comment", pbxGroupUuid),
        pbxGroup = {
            isa: 'PBXGroup',
            children: [],
            name: name,
            sourceTree: sourceTree ? sourceTree : '"<group>"'
        },
        fileReferenceSection = this.pbxFileReferenceSection(),
        filePathToReference = {};

    //path is mandatory only for the main group
    if(!opt.filesRelativeToProject) {
        pbxGroup.path = path;
    }

    for (var key in fileReferenceSection) {
        // only look for comments
        if (!COMMENT_KEY.test(key)) continue;

        var fileReferenceKey = key.split(COMMENT_KEY)[0],
            fileReference = fileReferenceSection[fileReferenceKey];

        filePathToReference[fileReference.path] = { fileRef: fileReferenceKey, basename: fileReferenceSection[key] };
    }

    for (var index = 0; index < filePathsArray.length; index++) {
        var filePath = filePathsArray[index],
            filePathQuoted = "\"" + filePath + "\"";
        if (filePathToReference[filePath]) {
            pbxGroup.children.push(pbxGroupChild(filePathToReference[filePath]));
            continue;
        } else if (filePathToReference[filePathQuoted]) {
            pbxGroup.children.push(pbxGroupChild(filePathToReference[filePathQuoted]));
            continue;
        }

        var relativePath = $path.relative(srcRootPath, filePath);
        var file = new pbxFile(opt.filesRelativeToProject ? relativePath : filePath);
        file.uuid = this.generateUuid();
        file.fileRef = this.generateUuid();
        if(opt.target) {
            file.target = opt.target;
        }
        if (fs.existsSync(filePath) && fs.lstatSync(filePath).isDirectory() && !isAssetFileType(file.lastKnownFileType)) {
            if($path.extname(filePath) === ".lproj") {
                continue;
            }
            file.fileRef = file.uuid;
            var files = fs.readdirSync(filePath).map(p => $path.join(filePath, p));
            this.addToPbxFileReferenceSection(file);    // PBXFileReference
            this.addToPbxBuildFileSection(file);
            pbxGroup.children.push(pbxGroupChild(file));
            this.addPbxGroup(files, $path.basename(filePath), filePath, null, {uuid: file.uuid, filesRelativeToProject: opt.filesRelativeToProject, target: opt.target});
        } else {
            this.addToPbxFileReferenceSection(file);    // PBXFileReference
            pbxGroup.children.push(pbxGroupChild(file));
            if(isHeaderFileType(file.lastKnownFileType) || isPlistFileType(file.lastKnownFileType) || isModuleMapFileType(file.lastKnownFileType)) {
                continue;
            }

            if(isEntitlementFileType(file.lastKnownFileType)) {
                this.addToBuildSettings('CODE_SIGN_ENTITLEMENTS', file.path, opt.target);
                continue;
            }

            if (isSourceFileType(file.lastKnownFileType)) {    // PBXBuildFile
                this.addToPbxSourcesBuildPhase(file);
            } else if(isResource(file.group)) {
                this.addToPbxResourcesBuildPhase(file)
            }

            this.addToPbxBuildFileSection(file);
        }
    }

    handleLocalization.call(this, filePathsArray, pbxGroup, srcRootPath, opt);

    if (groups) {
        groups[pbxGroupUuid] = pbxGroup;
        groups[commentKey] = name;
    }

    if (opt.isMain) {
        let mainGroup = this.findMainPbxGroup();
        if (mainGroup) {
            var file = new pbxFile($path.relative(this.filepath, path), {basename: name});
            file.fileRef = pbxGroupUuid;
            mainGroup.children.push(pbxGroupChild(file));
        }
    }

    return {uuid: pbxGroupUuid, pbxGroup: pbxGroup};
}

function handleLocalization(files, pbxGroup, srcRootPath, opt) {
    var storyboardNames = {};
    var allNames = {};
    var regions = {};

    for (let i = 0; i < files.length; i++) {
        const filePath = files[i];
        const parsedPath = $path.parse(filePath);
        if($path.extname(filePath) === ".lproj") {
            var regionName = parsedPath.name;
            var region = regions[regionName] = {};
            var regionFiles =  fs.readdirSync(filePath);
            this.addKnownRegion(regionName);
            for (let j = 0; j < regionFiles.length; j++) {
                var regionFilePath = regionFiles[j];
                var parsedRegionFilePath = $path.parse(regionFilePath);
                var regionFileName = parsedRegionFilePath.name;
                if(parsedRegionFilePath.ext === ".storyboard") {
                    storyboardNames[parsedRegionFilePath.name] = true;
                }
                fileRegions = allNames[parsedRegionFilePath.name] = allNames[parsedRegionFilePath.name] || [];
                fileRegions.push(regionName);
                region[regionFileName] = $path.join(filePath, regionFilePath);
            }
        }
    }

    for (var name in allNames) {
        fileRegions = allNames[name]
        var variantGroupName = storyboardNames[name] ? name + ".storyboard" : name + ".strings";

        var variantGroup = this.addLocalizationVariantGroup(variantGroupName, { target: opt.target, skipAddToResourcesGroup: true });
        pbxGroup.children.push(pbxGroupChild(variantGroup));
        for (let k = 0; k < fileRegions.length; k++) {
            var file = regions[fileRegions[k]][name];
            var refFile = new pbxFile($path.relative(srcRootPath, file), {basename: fileRegions[k]});
            refFile.fileRef = this.generateUuid();
            this.addToPbxFileReferenceSection(refFile);
            this.addToPbxVariantGroup(refFile, variantGroup.fileRef);
        }
    }
};

pbxProject.prototype.removePbxGroup = function(groupName, path) {
    var groupKey = this.findPBXGroupKey({name: groupName}) || this.findPBXVariantGroupKey({name: groupName});
    if (!groupKey) {
        return;
    }
    var group = this.getPBXGroupByKey(groupKey) || this.getPBXVariantGroupByKey(groupKey)
 
    path = path || "";

    var children = group.children;

    for(i in children) {
        var file = new pbxFile($path.join(path, children[i].comment));
        file.fileRef = children[i].value;
        file.uuid = file.fileRef;
        this.removePbxGroup(children[i].comment, $path.join(path, children[i].comment));
        this.removeFromPbxFileReferenceSection(file);
        this.removeFromPbxBuildFileSection(file);
        this.removeFromPbxSourcesBuildPhase(file);
    }

    var mainGroup = this.findMainPbxGroup();
    if(mainGroup) {
        var mainGroupChildren = this.findMainPbxGroup().children, i;
        for(i in mainGroupChildren) {
            if (mainGroupChildren[i].comment == groupName) {
                mainGroupChildren.splice(i, 1);
            }
        }
    }

    var section, key, itemKey;
    if(unquote(group.isa) === "PBXVariantGroup") {
        section = this.hash.project.objects['PBXVariantGroup'];
    } else {
        section = this.hash.project.objects['PBXGroup'];
    }

    for (key in section) {
        // only look for comments
        if (!COMMENT_KEY.test(key)) continue;

        if (section[key] == groupName) {
            itemKey = key.split(COMMENT_KEY)[0];
            delete section[itemKey];
        }
    }
}

pbxProject.prototype.addToPbxProjectSection = function(target) {

    var newTarget = {
            value: target.uuid,
            comment: pbxNativeTargetComment(target.pbxNativeTarget)
        };

    this.pbxProjectSection()[this.getFirstProject()['uuid']]['targets'].push(newTarget);
}

pbxProject.prototype.addToPbxNativeTargetSection = function(target) {
    var commentKey = f("%s_comment", target.uuid);

    this.pbxNativeTargetSection()[target.uuid] = target.pbxNativeTarget;
    this.pbxNativeTargetSection()[commentKey] = target.pbxNativeTarget.name;
}

pbxProject.prototype.addToPbxFileReferenceSection = function(file) {
    var commentKey = f("%s_comment", file.fileRef);

    this.pbxFileReferenceSection()[file.fileRef] = pbxFileReferenceObj(file);
    this.pbxFileReferenceSection()[commentKey] = pbxFileReferenceComment(file);
}

pbxProject.prototype.removeFromPbxFileReferenceSection = function(file) {

    var i;
    var refObj = pbxFileReferenceObj(file);
    for (i in this.pbxFileReferenceSection()) {
        if (this.pbxFileReferenceSection()[i].name == refObj.name ||
            ('"' + this.pbxFileReferenceSection()[i].name + '"') == refObj.name ||
            this.pbxFileReferenceSection()[i].path == refObj.path ||
            ('"' + this.pbxFileReferenceSection()[i].path + '"') == refObj.path) {
            file.fileRef = file.uuid = i;
            delete this.pbxFileReferenceSection()[i];
            break;
        }
    }
    var commentKey = f("%s_comment", file.fileRef);
    if (this.pbxFileReferenceSection()[commentKey] != undefined) {
        delete this.pbxFileReferenceSection()[commentKey];
    }

    return file;
}

pbxProject.prototype.addToXcVersionGroupSection = function(file) {
    if (!file.models || !file.currentModel) {
        throw new Error("Cannot create a XCVersionGroup section from not a data model document file");
    }

    var commentKey = f("%s_comment", file.fileRef);

    if (!this.xcVersionGroupSection()[file.fileRef]) {
        this.xcVersionGroupSection()[file.fileRef] = {
            isa: 'XCVersionGroup',
            children: file.models.map(function (el) { return el.fileRef; }),
            currentVersion: file.currentModel.fileRef,
            name: $path.basename(file.path),
            path: file.path,
            sourceTree: '"<group>"',
            versionGroupType: 'wrapper.xcdatamodel'
        };
        this.xcVersionGroupSection()[commentKey] = $path.basename(file.path);
    }
}

pbxProject.prototype.addToPluginsPbxGroup = function(file) {
    var pluginsGroup = this.pbxGroupByName('Plugins');
    if (!pluginsGroup) {
        this.addPbxGroup([file.path], 'Plugins');
    } else {
        pluginsGroup.children.push(pbxGroupChild(file));
    }
}

pbxProject.prototype.removeFromPluginsPbxGroup = function(file) {
    if (!this.pbxGroupByName('Plugins')) {
        return null;
    }
    var pluginsGroupChildren = this.pbxGroupByName('Plugins').children, i;
    for (i in pluginsGroupChildren) {
        if (pbxGroupChild(file).value == pluginsGroupChildren[i].value &&
            pbxGroupChild(file).comment == pluginsGroupChildren[i].comment) {
            pluginsGroupChildren.splice(i, 1);
            break;
        }
    }
}

pbxProject.prototype.addToResourcesPbxGroup = function(file) {
    var pluginsGroup = this.pbxGroupByName('Resources');
    if (!pluginsGroup) {
        this.addPbxGroup([file.path], 'Resources');
    } else {
        pluginsGroup.children.push(pbxGroupChild(file));
    }
}

pbxProject.prototype.removeFromResourcesPbxGroup = function(file) {
    if (!this.pbxGroupByName('Resources')) {
        return null;
    }
    var pluginsGroupChildren = this.pbxGroupByName('Resources').children, i;
    for (i in pluginsGroupChildren) {
        if (pbxGroupChild(file).value == pluginsGroupChildren[i].value &&
            pbxGroupChild(file).comment == pluginsGroupChildren[i].comment) {
            pluginsGroupChildren.splice(i, 1);
            break;
        }
    }
}

pbxProject.prototype.addToFrameworksPbxGroup = function(file) {
    var pluginsGroup = this.pbxGroupByName('Frameworks');
    if (!pluginsGroup) {
        this.addPbxGroup([file.path], 'Frameworks');
    } else {
        pluginsGroup.children.push(pbxGroupChild(file));
    }
}

pbxProject.prototype.removeFromFrameworksPbxGroup = function(file) {
    if (!this.pbxGroupByName('Frameworks')) {
        return null;
    }
    var pluginsGroupChildren = this.pbxGroupByName('Frameworks').children;

    for (var i in pluginsGroupChildren) {
        if (pbxGroupChild(file).value == pluginsGroupChildren[i].value &&
            pbxGroupChild(file).comment == pluginsGroupChildren[i].comment) {
            pluginsGroupChildren.splice(i, 1);
            break;
        }
    }
}

pbxProject.prototype.addToPbxEmbedFrameworksBuildPhase = function (file) {
    var sources = this.pbxEmbedFrameworksBuildPhaseObj(file.target);
    if (sources) {
        sources.files.push(pbxBuildPhaseObj(file));
    }
}

pbxProject.prototype.removeFromPbxEmbedFrameworksBuildPhase = function (file) {
    var sources = this.pbxEmbedFrameworksBuildPhaseObj(file.target);
    if (sources) {
        var files = [];
        for (var i in sources.files) {
            if (sources.files[i].comment != longComment(file)) {
                files.push(sources.files[i]);
            }
        }
        sources.files = files;
    }
}

pbxProject.prototype.addToProductsPbxGroup = function(file) {
    var productsGroup = this.pbxGroupByName('Products');
    if (!productsGroup) {
        this.addPbxGroup([file.path], 'Products');
    } else {
        productsGroup.children.push(pbxGroupChild(file));
    }
}

pbxProject.prototype.removeFromProductsPbxGroup = function(file) {
    if (!this.pbxGroupByName('Products')) {
        return null;
    }
    var productsGroupChildren = this.pbxGroupByName('Products').children, i;
    for (i in productsGroupChildren) {
        if (pbxGroupChild(file).value == productsGroupChildren[i].value &&
            pbxGroupChild(file).comment == productsGroupChildren[i].comment) {
            productsGroupChildren.splice(i, 1);
            break;
        }
    }
}

pbxProject.prototype.addToPbxSourcesBuildPhase = function(file) {
    var sources = this.pbxSourcesBuildPhaseObj(file.target);
    sources.files.push(pbxBuildPhaseObj(file));
}

pbxProject.prototype.removeFromPbxSourcesBuildPhase = function(file) {

    var sources = this.pbxSourcesBuildPhaseObj(file.target), i;
    for (i in sources.files) {
        if (sources.files[i].comment == longComment(file)) {
            sources.files.splice(i, 1);
            break;
        }
    }
}

pbxProject.prototype.addToPbxResourcesBuildPhase = function(file) {
    var sources = this.pbxResourcesBuildPhaseObj(file.target);
    sources.files.push(pbxBuildPhaseObj(file));
}

pbxProject.prototype.removeFromPbxResourcesBuildPhase = function(file) {
    var sources = this.pbxResourcesBuildPhaseObj(file.target), i;

    for (i in sources.files) {
        if (sources.files[i].comment == longComment(file)) {
            sources.files.splice(i, 1);
            break;
        }
    }
}

pbxProject.prototype.addToPbxFrameworksBuildPhase = function(file) {
    var sources = this.pbxFrameworksBuildPhaseObj(file.target);
    sources.files.push(pbxBuildPhaseObj(file));
}

pbxProject.prototype.removeFromPbxFrameworksBuildPhase = function(file) {
    var sources = this.pbxFrameworksBuildPhaseObj(file.target);
    for (var i in sources.files) {
        if (sources.files[i].comment == longComment(file)) {
            sources.files.splice(i, 1);
            break;
        }
    }
}

pbxProject.prototype.addXCConfigurationList = function(configurationObjectsArray, defaultConfigurationName, comment) {
    var pbxBuildConfigurationSection = this.pbxXCBuildConfigurationSection(),
        pbxXCConfigurationListSection = this.pbxXCConfigurationList(),
        xcConfigurationListUuid = this.generateUuid(),
        commentKey = f("%s_comment", xcConfigurationListUuid),
        xcConfigurationList = {
            isa: 'XCConfigurationList',
            buildConfigurations: [],
            defaultConfigurationIsVisible: 0,
            defaultConfigurationName: defaultConfigurationName
        };

    for (var index = 0; index < configurationObjectsArray.length; index++) {
        var configuration = configurationObjectsArray[index],
            configurationUuid = this.generateUuid(),
            configurationCommentKey = f("%s_comment", configurationUuid);

        pbxBuildConfigurationSection[configurationUuid] = configuration;
        pbxBuildConfigurationSection[configurationCommentKey] = configuration.name;
        xcConfigurationList.buildConfigurations.push({ value: configurationUuid, comment: configuration.name });
    }

    if (pbxXCConfigurationListSection) {
        pbxXCConfigurationListSection[xcConfigurationListUuid] = xcConfigurationList;
        pbxXCConfigurationListSection[commentKey] = comment;
    }

    return { uuid: xcConfigurationListUuid, xcConfigurationList: xcConfigurationList };
}

pbxProject.prototype.addTargetDependency = function(target, dependencyTargets) {
    if (!target)
        return undefined;

    var nativeTargets = this.pbxNativeTargetSection();

    if (typeof nativeTargets[target] == "undefined")
        throw new Error("Invalid target: " + target);

    for (var index = 0; index < dependencyTargets.length; index++) {
        var dependencyTarget = dependencyTargets[index];
        if (typeof nativeTargets[dependencyTarget] == "undefined")
            throw new Error("Invalid target: " + dependencyTarget);
        }

    var pbxTargetDependency = 'PBXTargetDependency',
        pbxContainerItemProxy = 'PBXContainerItemProxy',
        pbxTargetDependencySection = this.hash.project.objects[pbxTargetDependency],
        pbxContainerItemProxySection = this.hash.project.objects[pbxContainerItemProxy];

    if(!pbxTargetDependencySection){
        pbxTargetDependencySection = this.hash.project.objects[pbxTargetDependency] = {};
    }

    if(!pbxContainerItemProxySection){
        pbxContainerItemProxySection = this.hash.project.objects[pbxContainerItemProxy] = {};
    }

    for (var index = 0; index < dependencyTargets.length; index++) {
        var dependencyTargetUuid = dependencyTargets[index],
            dependencyTargetCommentKey = f("%s_comment", dependencyTargetUuid),
            targetDependencyUuid = this.generateUuid(),
            targetDependencyCommentKey = f("%s_comment", targetDependencyUuid),
            itemProxyUuid = this.generateUuid(),
            itemProxyCommentKey = f("%s_comment", itemProxyUuid),
            itemProxy = {
                isa: pbxContainerItemProxy,
                containerPortal: this.hash.project['rootObject'],
                containerPortal_comment: this.hash.project['rootObject_comment'],
                proxyType: 1,
                remoteGlobalIDString: dependencyTargetUuid, 
                remoteInfo: nativeTargets[dependencyTargetUuid].name
            },
            targetDependency = {
                isa: pbxTargetDependency,
                target: dependencyTargetUuid,
                target_comment: nativeTargets[dependencyTargetCommentKey],
                targetProxy: itemProxyUuid,
                targetProxy_comment: pbxContainerItemProxy
            };

        if (pbxContainerItemProxySection && pbxTargetDependencySection) {
            pbxContainerItemProxySection[itemProxyUuid] = itemProxy;
            pbxContainerItemProxySection[itemProxyCommentKey] = pbxContainerItemProxy;
            pbxTargetDependencySection[targetDependencyUuid] = targetDependency;
            pbxTargetDependencySection[targetDependencyCommentKey] = pbxTargetDependency;
            nativeTargets[target].dependencies.push({ value: targetDependencyUuid, comment: pbxTargetDependency })
        }
    }

    return { uuid: target, target: nativeTargets[target] };
}

pbxProject.prototype.addBuildPhase = function(filePathsArray, buildPhaseType, comment, target, optionsOrFolderType, subfolderPath) {
    var buildPhaseSection,
        fileReferenceSection = this.pbxFileReferenceSection(),
        buildFileSection = this.pbxBuildFileSection(),
        buildPhaseUuid = this.generateUuid(),
        buildPhaseTargetUuid = target || this.getFirstTarget().uuid,
        commentKey = f("%s_comment", buildPhaseUuid),
        buildPhase = {
            isa: buildPhaseType,
            buildActionMask: 2147483647,
            files: [],
            runOnlyForDeploymentPostprocessing: 0
        },
        filePathToBuildFile = {};

    if (buildPhaseType === 'PBXCopyFilesBuildPhase') {
        buildPhase = pbxCopyFilesBuildPhaseObj(buildPhase, optionsOrFolderType, subfolderPath, comment);
    } else if (buildPhaseType === 'PBXShellScriptBuildPhase') {
        buildPhase = pbxShellScriptBuildPhaseObj(buildPhase, optionsOrFolderType, comment)
    }

    if (!this.hash.project.objects[buildPhaseType]) {
        this.hash.project.objects[buildPhaseType] = new Object();
    }

    if (!this.hash.project.objects[buildPhaseType][buildPhaseUuid]) {
        this.hash.project.objects[buildPhaseType][buildPhaseUuid] = buildPhase;
        this.hash.project.objects[buildPhaseType][commentKey] = comment;
    }

    if (this.hash.project.objects['PBXNativeTarget'][buildPhaseTargetUuid]['buildPhases']) {
        this.hash.project.objects['PBXNativeTarget'][buildPhaseTargetUuid]['buildPhases'].push({
            value: buildPhaseUuid,
            comment: comment
        })

    }


    for (var key in buildFileSection) {
        // only look for comments
        if (!COMMENT_KEY.test(key)) continue;

        var buildFileKey = key.split(COMMENT_KEY)[0],
            buildFile = buildFileSection[buildFileKey],
            fileReference = fileReferenceSection[buildFile.fileRef];

        if (!fileReference) continue;

        var pbxFileObj = new pbxFile(fileReference.path || "");

        filePathToBuildFile[fileReference.path] = { uuid: buildFileKey, basename: pbxFileObj.basename, group: pbxFileObj.group };
    }

    for (var index = 0; index < filePathsArray.length; index++) {
        var filePath = filePathsArray[index],
            filePathQuoted = "\"" + filePath + "\"",
            file = new pbxFile(filePath);

        if (filePathToBuildFile[filePath]) {
            buildPhase.files.push(pbxBuildPhaseObj(filePathToBuildFile[filePath]));
            continue;
        } else if (filePathToBuildFile[filePathQuoted]) {
            buildPhase.files.push(pbxBuildPhaseObj(filePathToBuildFile[filePathQuoted]));
            continue;
        }

        file.uuid = this.generateUuid();
        file.fileRef = this.generateUuid();
        this.addToPbxFileReferenceSection(file);    // PBXFileReference
        this.addToPbxBuildFileSection(file);        // PBXBuildFile
        buildPhase.files.push(pbxBuildPhaseObj(file));
    }

    if (buildPhaseSection) {
        buildPhaseSection[buildPhaseUuid] = buildPhase;
        buildPhaseSection[commentKey] = comment;
    }

    return { uuid: buildPhaseUuid, buildPhase: buildPhase };
}

// helper access functions
pbxProject.prototype.pbxProjectSection = function() {
    return this.hash.project.objects['PBXProject'];
}
pbxProject.prototype.pbxBuildFileSection = function() {
    return this.hash.project.objects['PBXBuildFile'];
}

pbxProject.prototype.pbxXCBuildConfigurationSection = function() {
    return this.hash.project.objects['XCBuildConfiguration'];
}

pbxProject.prototype.pbxFileReferenceSection = function() {
    return this.hash.project.objects['PBXFileReference'];
}

pbxProject.prototype.pbxNativeTargetSection = function() {
    return this.hash.project.objects['PBXNativeTarget'];
}

pbxProject.prototype.xcVersionGroupSection = function () {
    if (typeof this.hash.project.objects['XCVersionGroup'] !== 'object') {
        this.hash.project.objects['XCVersionGroup'] = {};
    }

    return this.hash.project.objects['XCVersionGroup'];
}

pbxProject.prototype.pbxXCConfigurationList = function() {
    return this.hash.project.objects['XCConfigurationList'];
}

pbxProject.prototype.pbxGroupByName = function(name) {
    var groups = this.hash.project.objects['PBXGroup'],
        key, groupKey;

    for (key in groups) {
        // only look for comments
        if (!COMMENT_KEY.test(key)) continue;

        if (groups[key] == name) {
            groupKey = key.split(COMMENT_KEY)[0];
            return groups[groupKey];
        }
    }

    return null;
}

pbxProject.prototype.pbxTargetByName = function(name) {
    return this.pbxItemByComment(name, 'PBXNativeTarget');
}

pbxProject.prototype.findTargetKey = function(name) {
    var targets = this.hash.project.objects['PBXNativeTarget'];

    for (var key in targets) {
        // only look for comments
        if (COMMENT_KEY.test(key)) continue;

        var target = targets[key];
        if (target.name === name) {
            return key;
        }
    }

    return null;
}

pbxProject.prototype.pbxItemByComment = function(name, pbxSectionName) {
    var section = this.hash.project.objects[pbxSectionName],
        key, itemKey;

    for (key in section) {
        // only look for comments
        if (!COMMENT_KEY.test(key)) continue;

        if (section[key] == name) {
            itemKey = key.split(COMMENT_KEY)[0];
            return section[itemKey];
        }
    }

    return null;
}

pbxProject.prototype.pbxSourcesBuildPhaseObj = function(target) {
    return this.buildPhaseObject('PBXSourcesBuildPhase', 'Sources', target);
}

pbxProject.prototype.pbxResourcesBuildPhaseObj = function(target) {
    return this.buildPhaseObject('PBXResourcesBuildPhase', 'Resources', target);
}

pbxProject.prototype.pbxFrameworksBuildPhaseObj = function(target) {
    return this.buildPhaseObject('PBXFrameworksBuildPhase', 'Frameworks', target);
}

pbxProject.prototype.pbxEmbedFrameworksBuildPhaseObj = function (target) {
    return this.buildPhaseObject('PBXCopyFilesBuildPhase', 'Embed Frameworks', target);
};

// Find Build Phase from group/target
pbxProject.prototype.buildPhase = function(group, target) {

    if (!target)
        return undefined;

    var nativeTargets = this.pbxNativeTargetSection();
     if (typeof nativeTargets[target] == "undefined")
        throw new Error("Invalid target: " + target);

    var nativeTarget = nativeTargets[target];
    var buildPhases = nativeTarget.buildPhases;
     for(var i in buildPhases)
     {
        var buildPhase = buildPhases[i];
        if (buildPhase.comment==group)
            return buildPhase.value + "_comment";
    }
}

pbxProject.prototype.buildPhaseObject = function(name, group, target) {
    var section = this.hash.project.objects[name],
        obj, sectionKey, key;
    var buildPhase = this.buildPhase(group, target);

    for (key in section) {

        // only look for comments
        if (!COMMENT_KEY.test(key)) continue;

        // select the proper buildPhase
        if (buildPhase && buildPhase!=key)
            continue;
        if (section[key] == group) {
            sectionKey = key.split(COMMENT_KEY)[0];
            return section[sectionKey];
        }
    }
    return null;
}

pbxProject.prototype.addBuildProperty = function(prop, value, build_name, productName) {
    var configurations = nonComments(this.pbxXCBuildConfigurationSection()),
        key, configuration;

    for (key in configurations){
        configuration = configurations[key];
        if ((!build_name || configuration.name === build_name) && (!productName || configuration.buildSettings.PRODUCT_NAME === productName || configuration.buildSettings.PRODUCT_NAME === `"${productName}"`)) {
            configuration.buildSettings[prop] = value;
        }
    }
}

pbxProject.prototype.removeBuildProperty = function(prop, build_name) {
    var configurations = nonComments(this.pbxXCBuildConfigurationSection()),
        key, configuration;

    for (key in configurations){
        configuration = configurations[key];
        if (configuration.buildSettings[prop] &&
            !build_name || configuration.name === build_name){
            delete configuration.buildSettings[prop];
        }
    }
}

/**
 *
 * @param prop {String}
 * @param value {String|Array|Object|Number|Boolean}
 * @param build {String} Release or Debug
 */
pbxProject.prototype.updateBuildProperty = function(prop, value, build) {
    var configs = this.pbxXCBuildConfigurationSection();
    for (var configName in configs) {
        if (!COMMENT_KEY.test(configName)) {
            var config = configs[configName];
            if ( (build && config.name === build) || (!build) ) {
                config.buildSettings[prop] = value;
            }
        }
    }
}

pbxProject.prototype.updateProductName = function(name) {
    this.updateBuildProperty('PRODUCT_NAME', '"' + name + '"');
}

pbxProject.prototype.removeFromFrameworkSearchPaths = function(file) {
    var configurations = nonComments(this.pbxXCBuildConfigurationSection()),
        INHERITED = '"$(inherited)"',
        SEARCH_PATHS = 'FRAMEWORK_SEARCH_PATHS',
        config, buildSettings, searchPaths;
    var new_path = searchPathForFile(file, this);

    for (config in configurations) {
        buildSettings = configurations[config].buildSettings;

        if (unquote(buildSettings['PRODUCT_NAME']) != this.productName)
            continue;

        searchPaths = buildSettings[SEARCH_PATHS];

        if (searchPaths && Array.isArray(searchPaths)) {
            var matches = searchPaths.filter(function(p) {
                return p.indexOf(new_path) > -1;
            });
            matches.forEach(function(m) {
                var idx = searchPaths.indexOf(m);
                searchPaths.splice(idx, 1);
            });
        }
    }
}

pbxProject.prototype.addToFrameworkSearchPaths = function(file) {
    var configurations = nonComments(this.pbxXCBuildConfigurationSection()),
        INHERITED = '"$(inherited)"',
        config, buildSettings, searchPaths;

    for (config in configurations) {
        buildSettings = configurations[config].buildSettings;

        if (unquote(buildSettings['PRODUCT_NAME']) != this.productName)
            continue;

        if (!buildSettings['FRAMEWORK_SEARCH_PATHS']
            || buildSettings['FRAMEWORK_SEARCH_PATHS'] === INHERITED) {
            buildSettings['FRAMEWORK_SEARCH_PATHS'] = [INHERITED];
        }

        buildSettings['FRAMEWORK_SEARCH_PATHS'].push(searchPathForFile(file, this));
    }
}

pbxProject.prototype.removeFromLibrarySearchPaths = function(file) {
    var configurations = nonComments(this.pbxXCBuildConfigurationSection()),
        INHERITED = '"$(inherited)"',
        SEARCH_PATHS = 'LIBRARY_SEARCH_PATHS',
        config, buildSettings, searchPaths;
    var new_path = searchPathForFile(file, this);

    for (config in configurations) {
        buildSettings = configurations[config].buildSettings;

        if (unquote(buildSettings['PRODUCT_NAME']) != this.productName)
            continue;

        searchPaths = buildSettings[SEARCH_PATHS];

        if (searchPaths && Array.isArray(searchPaths)) {
            var matches = searchPaths.filter(function(p) {
                return p.indexOf(new_path) > -1;
            });
            matches.forEach(function(m) {
                var idx = searchPaths.indexOf(m);
                searchPaths.splice(idx, 1);
            });
        }

    }
}

pbxProject.prototype.addToLibrarySearchPaths = function(file) {
    var configurations = nonComments(this.pbxXCBuildConfigurationSection()),
        INHERITED = '"$(inherited)"',
        config, buildSettings, searchPaths;

    for (config in configurations) {
        buildSettings = configurations[config].buildSettings;

        if (unquote(buildSettings['PRODUCT_NAME']) != this.productName)
            continue;

        if (!buildSettings['LIBRARY_SEARCH_PATHS']
            || buildSettings['LIBRARY_SEARCH_PATHS'] === INHERITED) {
            buildSettings['LIBRARY_SEARCH_PATHS'] = [INHERITED];
        }

        buildSettings['LIBRARY_SEARCH_PATHS'].push(searchPathForFile(file, this));
    }
}

pbxProject.prototype.removeFromHeaderSearchPaths = function(file) {
    var configurations = nonComments(this.pbxXCBuildConfigurationSection()),
        INHERITED = '"$(inherited)"',
        SEARCH_PATHS = 'HEADER_SEARCH_PATHS',
        config, buildSettings, searchPaths;
        var new_path = searchPathForFile(file, this);

    for (config in configurations) {
        buildSettings = configurations[config].buildSettings;

        if (unquote(buildSettings['PRODUCT_NAME']) != this.productName)
            continue;

        if (buildSettings[SEARCH_PATHS]) {
            var matches = buildSettings[SEARCH_PATHS].filter(function(p) {
                return p.indexOf(new_path) > -1;
            });
            matches.forEach(function(m) {
                var idx = buildSettings[SEARCH_PATHS].indexOf(m);
                buildSettings[SEARCH_PATHS].splice(idx, 1);
            });
        }

    }
}
pbxProject.prototype.addToHeaderSearchPaths = function(file, productName) {
    var configurations = nonComments(this.pbxXCBuildConfigurationSection()),
        INHERITED = '"$(inherited)"',
        config, buildSettings, searchPaths;

    productName = unquote(productName || this.productName);

    for (config in configurations) {
        buildSettings = configurations[config].buildSettings;

        if (unquote(buildSettings['PRODUCT_NAME']) != productName)
            continue;

        if (!buildSettings['HEADER_SEARCH_PATHS']) {
            buildSettings['HEADER_SEARCH_PATHS'] = [INHERITED];
        }

        buildSettings['HEADER_SEARCH_PATHS'].push(searchPathForFile(file, this));
    }
}

pbxProject.prototype.addToOtherLinkerFlags = function (flag) {
    var configurations = nonComments(this.pbxXCBuildConfigurationSection()),
        INHERITED = '"$(inherited)"',
        OTHER_LDFLAGS = 'OTHER_LDFLAGS',
        config, buildSettings;

    for (config in configurations) {
        buildSettings = configurations[config].buildSettings;

        if (unquote(buildSettings['PRODUCT_NAME']) != this.productName)
            continue;

        if (!buildSettings[OTHER_LDFLAGS]
                || buildSettings[OTHER_LDFLAGS] === INHERITED) {
            buildSettings[OTHER_LDFLAGS] = [INHERITED];
        }

        buildSettings[OTHER_LDFLAGS].push(flag);
    }
}

pbxProject.prototype.removeFromOtherLinkerFlags = function (flag) {
    var configurations = nonComments(this.pbxXCBuildConfigurationSection()),
        OTHER_LDFLAGS = 'OTHER_LDFLAGS',
        config, buildSettings;

    for (config in configurations) {
        buildSettings = configurations[config].buildSettings;

        if (unquote(buildSettings['PRODUCT_NAME']) != this.productName) {
            continue;
        }

        if (buildSettings[OTHER_LDFLAGS]) {
            var matches = buildSettings[OTHER_LDFLAGS].filter(function (p) {
                return p.indexOf(flag) > -1;
            });
            matches.forEach(function (m) {
                var idx = buildSettings[OTHER_LDFLAGS].indexOf(m);
                buildSettings[OTHER_LDFLAGS].splice(idx, 1);
            });
        }
    }
}

pbxProject.prototype.addToBuildSettings = function (buildSetting, value, targetUuid) {
    var configurations = nonComments(this.pbxXCBuildConfigurationSection()),
        buildConfigurationsUuids = [],
        config, buildSettings;

    if(targetUuid) {
        var targets = this.hash.project.objects['PBXNativeTarget'] || [];
        var target = targets[targetUuid] || {};
        var buildConfigurationList = target["buildConfigurationList"];
        var pbxXCConfigurationListSection = this.pbxXCConfigurationList() || {};
        var xcConfigurationList = pbxXCConfigurationListSection[buildConfigurationList] || {};
        var buildConfigurations = xcConfigurationList.buildConfigurations || [];
        for(var configurationUuid in buildConfigurations){
            buildConfigurationsUuids.push(buildConfigurations[configurationUuid].value);
        }

    }

    for (config in configurations) {
        if(!target || buildConfigurationsUuids.indexOf(config) >= 0) {
            buildSettings = configurations[config].buildSettings;

            buildSettings[buildSetting] = value;
        }
    }
}

pbxProject.prototype.removeFromBuildSettings = function (buildSetting) {
    var configurations = nonComments(this.pbxXCBuildConfigurationSection()),
        config, buildSettings;

    for (config in configurations) {
        buildSettings = configurations[config].buildSettings;

        if (buildSettings[buildSetting]) {
            delete buildSettings[buildSetting];
        }
    }
}

// a JS getter. hmmm
pbxProject.prototype.__defineGetter__("productName", function() {
    var configurations = nonComments(this.pbxXCBuildConfigurationSection()),
        config, productName;

    for (config in configurations) {
        productName = configurations[config].buildSettings['PRODUCT_NAME'];

        if (productName) {
            return unquote(productName);
        }
    }
});

// check if file is present
pbxProject.prototype.hasFile = function(filePath) {
    var files = nonComments(this.pbxFileReferenceSection()),
        file, id;
    for (id in files) {
        file = files[id];
        if (file.path == filePath || file.path == ('"' + filePath + '"')) {
            return file;
        }
    }

    return false;
}

pbxProject.prototype.addTarget = function(name, type, subfolder) {

    // Setup uuid and name of new target
    var targetUuid = this.generateUuid(),
        targetType = type,
        targetSubfolder = subfolder || name,
        targetName = name.trim();

    // Check type against list of allowed target types
    if (!targetName) {
        throw new Error("Target name missing.");
    }

    // Check type against list of allowed target types
    if (!targetType) {
        throw new Error("Target type missing.");
    }

    // Check type against list of allowed target types
    if (!producttypeForTargettype(targetType)) {
        throw new Error("Target type invalid: " + targetType);
    }

    // Build Configuration: Create
    var buildConfigurationsList = [
        {
            name: 'Debug',
            isa: 'XCBuildConfiguration',
            buildSettings: {
                GCC_PREPROCESSOR_DEFINITIONS: ['"DEBUG=1"', '"$(inherited)"'],
                INFOPLIST_FILE: '"' + $path.join(targetSubfolder, 'Info.plist' + '"'),
                LD_RUNPATH_SEARCH_PATHS: '"$(inherited) @executable_path/Frameworks @executable_path/../../Frameworks"',
                PRODUCT_NAME: '"' + targetName + '"',
                SKIP_INSTALL: 'YES'
            }
        },
        {
            name: 'Release',
            isa: 'XCBuildConfiguration',
            buildSettings: {
                INFOPLIST_FILE: '"' + $path.join(targetSubfolder, 'Info.plist' + '"'),
                LD_RUNPATH_SEARCH_PATHS: '"$(inherited) @executable_path/Frameworks @executable_path/../../Frameworks"',
                PRODUCT_NAME: '"' + targetName + '"',
                SKIP_INSTALL: 'YES'
            }
        }
    ];

    // Build Configuration: Add
    var buildConfigurations = this.addXCConfigurationList(buildConfigurationsList, 'Release', 'Build configuration list for PBXNativeTarget "' + targetName +'"');

    // Product: Create
    var productName = targetName,
        productType = producttypeForTargettype(targetType),
        productFileType = filetypeForProducttype(productType),
        productFile = this.addProductFile(productName, { group: 'Copy Files', 'target': targetUuid, 'explicitFileType': productFileType}),
        productFileName = productFile.basename;


    // Product: Add to build file list
    this.addToPbxBuildFileSection(productFile);

    // Target: Create
    var target = {
            uuid: targetUuid,
            pbxNativeTarget: {
                isa: 'PBXNativeTarget',
                name: '"' + targetName + '"',
                productName: '"' + targetName + '"',
                productReference: productFile.fileRef,
                productType: '"' + producttypeForTargettype(targetType) + '"',
                buildConfigurationList: buildConfigurations.uuid,
                buildPhases: [],
                buildRules: [],
                dependencies: []
            }
    };

    // Target: Add to PBXNativeTarget section
    this.addToPbxNativeTargetSection(target)

    // Product: Embed (only for "extension"-type targets)
    if (targetType === 'app_extension') {

        // Create CopyFiles phase in first target
        this.addBuildPhase([], 'PBXCopyFilesBuildPhase', 'Copy Files', this.getFirstTarget().uuid,  targetType)

        // Add product to CopyFiles phase
        this.addToPbxCopyfilesBuildPhase(productFile)

       // this.addBuildPhaseToTarget(newPhase.buildPhase, this.getFirstTarget().uuid)

    }

    // Target: Add uuid to root project
    this.addToPbxProjectSection(target);

    // Target: Add dependency for this target to first (main) target
    this.addTargetDependency(this.getFirstTarget().uuid, [target.uuid]);


    // Return target on success
    return target;
};

pbxProject.prototype.removeTargetsByProductType = function(targetProductType) {
    var nativeTargetsNonComments = nonComments(this.pbxNativeTargetSection());

    for (var nativeTargetUuid in nativeTargetsNonComments) {
        var target = nativeTargetsNonComments[nativeTargetUuid];
        if(target.productType === targetProductType || target.productType === `"${targetProductType}"`) {
            this.removeTarget(target, nativeTargetUuid);
        }
    }
}

pbxProject.prototype.removeTarget = function(target, targetKey) {
    let files = [];

    // iterate all buildPhases and collect all files that should be removed
    // remove the phase from the appropriate section
    var buildPhases = target["buildPhases"];
    for (let i = 0; i < buildPhases.length; i++) {
        var buildPhase = buildPhases[i];
        var sectionUuid = buildPhase.value;
        var section = {}; //in case we don't recognise the section
        if(buildPhase.comment === buildPhaseNameForIsa("PBXSourcesBuildPhase")){
            section = this.hash.project.objects["PBXSourcesBuildPhase"];
            files = files.concat(section[sectionUuid].files);
        } else if (buildPhase.comment === buildPhaseNameForIsa("PBXResourcesBuildPhase")) {
            section = this.hash.project.objects["PBXResourcesBuildPhase"];
            files = files.concat(section[sectionUuid].files);
        } else if (buildPhase.comment === buildPhaseNameForIsa("PBXFrameworksBuildPhase")) {
            section = this.hash.project.objects["PBXFrameworksBuildPhase"];
            files = files.concat(section[sectionUuid].files);
        }

        removeItemAndCommentFromSectionByUuid(section, sectionUuid);
    }

    //remove files from all build phases from PBXBuildFile section
    for (let k = 0; k < files.length; k++) {
        const fileUuid = files[k].value;
        this.removeFromPbxBuildFileSectionByUuid(fileUuid);
    }

    //remove target from the project itself
    var targets = this.pbxProjectSection()[this.getFirstProject()['uuid']]['targets']
    for (let l = 0; l < targets.length; l++) {
        if(targets[l].value === targetKey){
            targets.splice(l,1);
        }
    }

    //remove target build configurations
    //get configurationList object and get all configuration uuids
    var buildConfigurationList = target["buildConfigurationList"];
    var pbxXCConfigurationListSection = this.pbxXCConfigurationList();
    var xcConfigurationList = pbxXCConfigurationListSection[buildConfigurationList] || {};
    var buildConfigurations = xcConfigurationList.buildConfigurations || [];

    //remove all configurations from XCBuildConfiguration section
    var pbxBuildConfigurationSection = this.pbxXCBuildConfigurationSection()
    for (let m = 0; m < buildConfigurations.length; m++) {
        const configuration = buildConfigurations[m];
        removeItemAndCommentFromSectionByUuid(pbxBuildConfigurationSection, configuration.value);
    }

    //remove the XCConfigurationList from the section
    removeItemAndCommentFromSectionByUuid(pbxXCConfigurationListSection, buildConfigurationList);

    //get target product information
    var productUuid = "";

    var productReferenceUuid = target.productReference;
    var pbxBuildFileSection = this.pbxBuildFileSection();
    var pbxBuildFileSectionNoComments = nonComments(pbxBuildFileSection);

    // the productReference is the uuid from the PBXFileReference Section, but we need the one in PBXBuildFile section
    // check the fileRef of all records until we find the product
    for (var uuid in pbxBuildFileSectionNoComments) {
        if (this.pbxBuildFileSection()[uuid].fileRef == productReferenceUuid) {
            productUuid = uuid;
        }
    }

    //remove copy phase
    var pbxCopySection = this.hash.project.objects["PBXCopyFilesBuildPhase"];
    var noCommentsCopySection = nonComments(pbxCopySection);
    for (var copyPhaseId in noCommentsCopySection) {
        var copyPhase = noCommentsCopySection[copyPhaseId];
        if(copyPhase.files) {

            //check if the product of the target is part of this copy phase files
            for (let p = 0; p < copyPhase.files.length; p++) {
                const copyFile = copyPhase.files[p];
                if(copyFile.value === productUuid) {
                    //if this is the only file in the copy phase - delete the whole phase and remove it from all targets
                    if(copyPhase.files.length === 1) {
                        var nativeTargetsnoComments =  nonComments(this.pbxNativeTargetSection());
                        for (var nativeTargetUuid in nativeTargetsnoComments) {
                            const nativeTarget = nativeTargetsnoComments[nativeTargetUuid];
                            for (var phaseIndex in nativeTarget.buildPhases) {
                                if (nativeTarget.buildPhases[phaseIndex].value == copyPhaseId) {
                                    //remove copy build phase from containing target
                                    nativeTarget.buildPhases.splice(phaseIndex, 1);
                                    break;
                                }
                            }
                        }

                        //remove from copySection
                        removeItemAndCommentFromSectionByUuid(pbxCopySection, copyPhaseId);
                    } else {
                        //if there are other files in the copy phase, just remove the product
                        copyPhase.files.splice(p, 1);
                    }
                    break;
                }
            }
        }
    }

    //remove the product from the PBXBuildFile section
    removeItemAndCommentFromSectionByUuid(pbxBuildFileSection, productUuid);


    //remove the product from the Products PBXGroup
    var fileReferenceSection = this.pbxFileReferenceSection();
    var productReference = fileReferenceSection[productReferenceUuid];
    var productFile = new pbxFile(productReference.path);
    productFile.fileRef = productReferenceUuid;
    productFile.uuid = productReferenceUuid;
    this.removeFromProductsPbxGroup(productFile);

    //remove the product from the PBXFileReference section
    removeItemAndCommentFromSectionByUuid(fileReferenceSection, productReferenceUuid);


    //find all PBXTargetDependency that refer the target and remove them with the PBXContainerItemProxy
    var pbxTargetDependency = 'PBXTargetDependency';
    var pbxContainerItemProxy = 'PBXContainerItemProxy';
    var pbxTargetDependencySection = this.hash.project.objects[pbxTargetDependency];
    var pbxTargetDependencySectionNoComments = nonComments(pbxTargetDependencySection);
    var pbxContainerItemProxySection = this.hash.project.objects[pbxContainerItemProxy];

    for(var targetDependencyUuid in pbxTargetDependencySectionNoComments) {
        var targetDependency = pbxTargetDependencySectionNoComments[targetDependencyUuid];
        if(targetDependency.target === targetKey) {
            //remove the PBXContainerItemProxy
            removeItemAndCommentFromSectionByUuid(pbxContainerItemProxySection, targetDependency.targetProxy);
            //remove the PBXTargetDependency from dependencies from all targets
            for (var nativeTargetKey in nativeTargetsnoComments) {
                const nativeTarget = nativeTargetsnoComments[nativeTargetKey];
                for (var dependencyIndex in nativeTarget.dependencies) {
                    if (nativeTarget.dependencies[dependencyIndex].value == targetDependencyUuid) {
                        nativeTarget.dependencies.splice(dependencyIndex, 1);
                    }
                }
            }
            //remove the PBXTargetDependency
            removeItemAndCommentFromSectionByUuid(pbxTargetDependencySection, targetDependencyUuid);
        }
    }

    //remove targetAttributes for target
    var attributes = this.getFirstProject()['firstProject']['attributes'];
    if (attributes['TargetAttributes']) {
        delete attributes['TargetAttributes'][targetKey];
    }

    //remove the target from PBXNativeTarget section
    var nativeTargets = this.pbxNativeTargetSection();
    removeItemAndCommentFromSectionByUuid(nativeTargets, targetKey);

    this.removePbxGroup(unquote(target.name));
};

function removeItemAndCommentFromSectionByUuid(section, itemUuid) {
    var commentKey = f("%s_comment", itemUuid)
    delete section[commentKey];
    delete section[itemUuid];
}

// helper recursive prop search+replace
function propReplace(obj, prop, value) {
    var o = {};
    for (var p in obj) {
        if (o.hasOwnProperty.call(obj, p)) {
            if (typeof obj[p] == 'object' && !Array.isArray(obj[p])) {
                propReplace(obj[p], prop, value);
            } else if (p == prop) {
                obj[p] = value;
            }
        }
    }
}

// helper object creation functions
function pbxBuildFileObj(file) {
    var obj = Object.create(null);

    obj.isa = 'PBXBuildFile';
    obj.fileRef = file.fileRef;
    obj.fileRef_comment = file.basename;
    if (file.settings) obj.settings = file.settings;

    return obj;
}

function pbxFileReferenceObj(file) {
    var fileObject = {
        isa: "PBXFileReference",
        name: file.basename,
        path: file.path,
        sourceTree: file.sourceTree,
        fileEncoding: file.fileEncoding,
        lastKnownFileType: file.lastKnownFileType,
        explicitFileType: file.explicitFileType,
        includeInIndex: file.includeInIndex
    };

    if(fileObject.name && fileObject.name.indexOf("\"") !== -1) {
        fileObject.name = fileObject.name.replace(/\"/g, "\\\"");
        fileObject.path = fileObject.path.replace(/\"/g, "\\\"");
    }

    if(file.basename && !file.basename.match(NO_SPECIAL_SYMBOLS)) {
        fileObject.name = "\"" + fileObject.name + "\"";
    }

    if(!file.path.match(NO_SPECIAL_SYMBOLS)) {
        fileObject.path = "\"" + fileObject.path + "\"";
    }

    return fileObject;
}

function pbxGroupChild(file) {
    var obj = Object.create(null);

    obj.value = file.fileRef;
    obj.comment = file.basename;

    return obj;
}

function pbxBuildPhaseObj(file) {
    var obj = Object.create(null);

    obj.value = file.uuid;
    obj.comment = longComment(file);

    return obj;
}

function pbxCopyFilesBuildPhaseObj(obj, folderType, subfolderPath, phaseName) {

     // Add additional properties for 'CopyFiles' build phase
    var DESTINATION_BY_TARGETTYPE = {
        application: 'wrapper',
        app_extension: 'plugins',
        bundle: 'wrapper',
        command_line_tool: 'wrapper',
        dynamic_library: 'products_directory',
        framework: 'shared_frameworks',
        frameworks: 'frameworks',
        static_library: 'products_directory',
        unit_test_bundle: 'wrapper',
        watch_app: 'wrapper',
        watch_extension: 'plugins'
    }
    var SUBFOLDERSPEC_BY_DESTINATION = {
        absolute_path: 0,
        executables: 6,
        frameworks: 10,
        java_resources: 15,
        plugins: 13,
        products_directory: 16,
        resources: 7,
        shared_frameworks: 11,
        shared_support: 12,
        wrapper: 1,
        xpc_services: 0
    }

    obj.name = '"' + phaseName + '"';
    obj.dstPath = subfolderPath || '""';
    obj.dstSubfolderSpec = SUBFOLDERSPEC_BY_DESTINATION[DESTINATION_BY_TARGETTYPE[folderType]];

    return obj;
}

function pbxShellScriptBuildPhaseObj(obj, options, phaseName) {
    obj.name = '"' + phaseName + '"';
    obj.inputPaths = options.inputPaths || [];
    obj.outputPaths = options.outputPaths || [];
    obj.shellPath = options.shellPath;
    obj.shellScript = '"' + options.shellScript.replace(/"/g, '\\"') + '"';

    return obj;
}

function pbxBuildFileComment(file) {
    return longComment(file);
}

function pbxFileReferenceComment(file) {
    return file.basename || $path.basename(file.path);
}

function pbxNativeTargetComment(target) {
    return target.name;
}

function longComment(file) {
    return f("%s in %s", file.basename, file.group);
}

// respect <group> path
function correctForPluginsPath(file, project) {
    return correctForPath(file, project, 'Plugins');
}

function correctForResourcesPath(file, project) {
    return correctForPath(file, project, 'Resources');
}

function correctForFrameworksPath(file, project) {
    return correctForPath(file, project, 'Frameworks');
}

function correctForPath(file, project, group) {
    var r_group_dir = new RegExp('^' + group + '[\\\\/]');

    if (project.pbxGroupByName(group).path)
        file.path = file.path.replace(r_group_dir, '');

    return file;
}

function searchPathForFile(file, proj) {
    const getPathString = (filePath) => {
        return `"\\"${filePath}\\""`;
    }

    const getRelativePathString = (filePath) => {
        return getPathString(`$(SRCROOT)/${filePath}`);
    }

    if (typeof file === 'string') {
        let relativeFilePath = file;

        if ($path.isAbsolute(file)) {
            const srcRoot = $path.dirname($path.dirname(proj.filepath));
            relativeFilePath = $path.relative(srcRoot, file);
        }

        return getRelativePathString(relativeFilePath);
    }

    if (file.relativePath) {
        return getRelativePathString(file.relativePath);
    }

    var plugins = proj.pbxGroupByName('Plugins'),
        pluginsPath = plugins ? plugins.path : null,
        fileDir = $path.dirname(file.path);

    if (fileDir == '.') {
        fileDir = '';
    } else {
        fileDir = '/' + fileDir;
    }

    if (file.plugin && pluginsPath) {
        return getRelativePathString(unquote(pluginsPath));
    } else if (file.customFramework && file.dirname) {
        return getPathString(file.dirname);
    } else {
        return getRelativePathString(proj.productName + fileDir);
    }
}

function nonComments(obj) {
    var keys = Object.keys(obj),
        newObj = {}, i = 0;

    for (i; i < keys.length; i++) {
        if (!COMMENT_KEY.test(keys[i])) {
            newObj[keys[i]] = obj[keys[i]];
        }
    }

    return newObj;
}

function unquote(str) {
    if (str) return str.replace(/^"(.*)"$/, "$1");
}


function buildPhaseNameForIsa (isa) {

    var BUILDPHASENAME_BY_ISA = {
        PBXCopyFilesBuildPhase: 'Copy Files',
        PBXResourcesBuildPhase: 'Resources',
        PBXSourcesBuildPhase: 'Sources',
        PBXFrameworksBuildPhase: 'Frameworks'
    }

    return BUILDPHASENAME_BY_ISA[isa]
}

function producttypeForTargettype (targetType) {

    var PRODUCTTYPE_BY_TARGETTYPE = {
            application: 'com.apple.product-type.application',
            app_extension: 'com.apple.product-type.app-extension',
            bundle: 'com.apple.product-type.bundle',
            command_line_tool: 'com.apple.product-type.tool',
            dynamic_library: 'com.apple.product-type.library.dynamic',
            framework: 'com.apple.product-type.framework',
            static_library: 'com.apple.product-type.library.static',
            unit_test_bundle: 'com.apple.product-type.bundle.unit-test',
            watch_app: 'com.apple.product-type.application.watchapp',
            watch_extension: 'com.apple.product-type.watchkit-extension'
        };

    return PRODUCTTYPE_BY_TARGETTYPE[targetType]
}

function filetypeForProducttype (productType) {

    var FILETYPE_BY_PRODUCTTYPE = {
            'com.apple.product-type.application': '"wrapper.application"',
            'com.apple.product-type.app-extension': '"wrapper.app-extension"',
            'com.apple.product-type.bundle': '"wrapper.plug-in"',
            'com.apple.product-type.tool': '"compiled.mach-o.dylib"',
            'com.apple.product-type.library.dynamic': '"compiled.mach-o.dylib"',
            'com.apple.product-type.framework': '"wrapper.framework"',
            'com.apple.product-type.library.static': '"archive.ar"',
            'com.apple.product-type.bundle.unit-test': '"wrapper.cfbundle"',
            'com.apple.product-type.application.watchapp': '"wrapper.application"',
            'com.apple.product-type.watchkit-extension': '"wrapper.app-extension"'
        };

    return FILETYPE_BY_PRODUCTTYPE[productType]
}

pbxProject.prototype.getFirstProject = function() {

    // Get pbxProject container
    var pbxProjectContainer = this.pbxProjectSection();

    // Get first pbxProject UUID
    var firstProjectUuid = Object.keys(pbxProjectContainer)[0];

    // Get first pbxProject
    var firstProject = pbxProjectContainer[firstProjectUuid];

     return {
        uuid: firstProjectUuid,
        firstProject: firstProject
    }
}

pbxProject.prototype.getFirstTarget = function() {

    // Get first targets UUID
    var firstTargetUuid = this.getFirstProject()['firstProject']['targets'][0].value;

    // Get first pbxNativeTarget
    var firstTarget = this.pbxNativeTargetSection()[firstTargetUuid];

    return {
        uuid: firstTargetUuid,
        firstTarget: firstTarget
    }
}

/*** NEW ***/

pbxProject.prototype.addToPbxGroupType = function (file, groupKey, groupType) {
    var group = this.getPBXGroupByKeyAndType(groupKey, groupType);
    if (group && group.children !== undefined) {
        if (typeof file === 'string') {
            //Group Key
            var childGroup = {
                value:file,
            };
            if (this.getPBXGroupByKey(file)) {
                childGroup.comment = this.getPBXGroupByKey(file).name;
            }
            else if (this.getPBXVariantGroupByKey(file)) {
                childGroup.comment = this.getPBXVariantGroupByKey(file).name;
            }

            group.children.push(childGroup);
        }
        else {
            //File Object
            group.children.push(pbxGroupChild(file));
        }
    }
}

pbxProject.prototype.addToPbxVariantGroup = function (file, groupKey) {
    this.addToPbxGroupType(file, groupKey, 'PBXVariantGroup');
}

pbxProject.prototype.addToPbxGroup = function (file, groupKey) {
    this.addToPbxGroupType(file, groupKey, 'PBXGroup');
}



pbxProject.prototype.pbxCreateGroupWithType = function(name, pathName, groupType) {
    //Create object
    var model = {
        isa: '"' + groupType + '"',
        children: [],
        name: name,
        sourceTree: '"<group>"'
    };
    if (pathName) model.path = pathName;
    var key = this.generateUuid();

    //Create comment
    var commendId = key + '_comment';

    //add obj and commentObj to groups;
    var groups = this.hash.project.objects[groupType];
    if (!groups) {
        groups = this.hash.project.objects[groupType] = new Object();
    }
    groups[commendId] = name;
    groups[key] = model;

    return key;
}

pbxProject.prototype.pbxCreateVariantGroup = function(name) {
    return this.pbxCreateGroupWithType(name, undefined, 'PBXVariantGroup')
}

pbxProject.prototype.pbxCreateGroup = function(name, pathName) {
    return this.pbxCreateGroupWithType(name, pathName, 'PBXGroup');
}



pbxProject.prototype.removeFromPbxGroupAndType = function (file, groupKey, groupType) {
    var group = this.getPBXGroupByKeyAndType(groupKey, groupType);
    if (group) {
        var groupChildren = group.children, i;
        for(i in groupChildren) {
            if(pbxGroupChild(file).value == groupChildren[i].value &&
                pbxGroupChild(file).comment == groupChildren[i].comment) {
                groupChildren.splice(i, 1);
                break;
            }
        }
    }
}

pbxProject.prototype.removeFromPbxGroup = function (file, groupKey) {
    this.removeFromPbxGroupAndType(file, groupKey, 'PBXGroup');
}

pbxProject.prototype.removeFromPbxVariantGroup = function (file, groupKey) {
    this.removeFromPbxGroupAndType(file, groupKey, 'PBXVariantGroup');
}



pbxProject.prototype.getPBXGroupByKeyAndType = function(key, groupType) {
    return this.hash.project.objects[groupType][key];
};

pbxProject.prototype.getPBXGroupByKey = function(key) {
    return this.hash.project.objects['PBXGroup'][key];
};

pbxProject.prototype.getPBXVariantGroupByKey = function(key) {
    return this.hash.project.objects['PBXVariantGroup'][key];
};



pbxProject.prototype.findPBXGroupKeyAndType = function(criteria, groupType) {
    var groups = this.hash.project.objects[groupType];
    var target;

    for (var key in groups) {
        // only look for comments
        if (COMMENT_KEY.test(key)) continue;

        var group = groups[key];
        if (criteria && criteria.path && criteria.name) {
            if (criteria.path === group.path && criteria.name === group.name) {
                target = key;
                break
            }
        }
        else if (criteria && criteria.path) {
            if (criteria.path === group.path) {
                target = key;
                break
            }
        }
        else if (criteria && criteria.name) {
            if (criteria.name === group.name) {
                target = key;
                break
            }
        }
    }

    return target;
}

pbxProject.prototype.findPBXGroupKey = function(criteria) {
    return this.findPBXGroupKeyAndType(criteria, 'PBXGroup');
}

pbxProject.prototype.findPBXVariantGroupKey = function(criteria) {
    return this.findPBXGroupKeyAndType(criteria, 'PBXVariantGroup');
}

pbxProject.prototype.addLocalizationVariantGroup = function(name, ops) {
    ops = ops || {};
    var groupKey = this.pbxCreateVariantGroup(name);

    if(!ops.skipAddToResourcesGroup) {
        var resourcesGroupKey = this.findPBXGroupKey({name: 'Resources'});
        this.addToPbxGroup(groupKey, resourcesGroupKey);
    }

    var localizationVariantGroup = {
        uuid: this.generateUuid(),
        fileRef: groupKey,
        basename: name,
        group: "Resources",
        children: []
    }
    if(ops.target) {
        localizationVariantGroup.target = ops.target;
    }
    this.addToPbxBuildFileSection(localizationVariantGroup);        // PBXBuildFile
    this.addToPbxResourcesBuildPhase(localizationVariantGroup);     //PBXResourcesBuildPhase

    return localizationVariantGroup;
};

pbxProject.prototype.addKnownRegion = function (name) {
  if (!this.pbxProjectSection()[this.getFirstProject()['uuid']]['knownRegions']) {
    this.pbxProjectSection()[this.getFirstProject()['uuid']]['knownRegions'] = [];
  }
  if (!this.hasKnownRegion(name)) {
    this.pbxProjectSection()[this.getFirstProject()['uuid']]['knownRegions'].push(name);
  }
}

pbxProject.prototype.removeKnownRegion = function (name) {
  var regions = this.pbxProjectSection()[this.getFirstProject()['uuid']]['knownRegions'];
  if (regions) {
    for (var i = 0; i < regions.length; i++) {
      if (regions[i] === name) {
        regions.splice(i, 1);
        break;
      }
    }
    this.pbxProjectSection()[this.getFirstProject()['uuid']]['knownRegions'] = regions;
  }
}

pbxProject.prototype.hasKnownRegion = function (name) {
  var regions = this.pbxProjectSection()[this.getFirstProject()['uuid']]['knownRegions'];
  if (regions) {
    for (var i in regions) {
      if (regions[i] === name) {
        return true;
      }
    }
  }
  return false;
}

pbxProject.prototype.getPBXObject = function(name) {
    return this.hash.project.objects[name];
}



pbxProject.prototype.addFile = function (path, group, opt) {
    var file = new pbxFile(path, opt);

    // null is better for early errors
    if (this.hasFile(file.path)) return null;

    file.fileRef = this.generateUuid();

    this.addToPbxFileReferenceSection(file);    // PBXFileReference

    if (this.getPBXGroupByKey(group)) {
        this.addToPbxGroup(file, group);        // PBXGroup
    }
    else if (this.getPBXVariantGroupByKey(group)) {
        this.addToPbxVariantGroup(file, group);            // PBXVariantGroup
    }

    return file;
}

pbxProject.prototype.removeFile = function (path, group, opt) {
    var file = new pbxFile(path, opt);

    this.removeFromPbxFileReferenceSection(file);    // PBXFileReference

    if (this.getPBXGroupByKey(group)) {
        this.removeFromPbxGroup(file, group);            // PBXGroup
    }
    else if (this.getPBXVariantGroupByKey(group)) {
        this.removeFromPbxVariantGroup(file, group);     // PBXVariantGroup
    }

    return file;
}



pbxProject.prototype.getBuildProperty = function(prop, build) {
    var target;
    var configs = this.pbxXCBuildConfigurationSection();
    for (var configName in configs) {
        if (!COMMENT_KEY.test(configName)) {
            var config = configs[configName];
            if ( (build && config.name === build) || (build === undefined) ) {
                if (config.buildSettings[prop] !== undefined) {
                    target = config.buildSettings[prop];
                }
            }
        }
    }
    return target;
}

pbxProject.prototype.getBuildConfigByName = function(name) {
    var target = {};
    var configs = this.pbxXCBuildConfigurationSection();
    for (var configName in configs) {
        if (!COMMENT_KEY.test(configName)) {
            var config = configs[configName];
            if (config.name === name)  {
                target[configName] = config;
            }
        }
    }
    return target;
}

pbxProject.prototype.addDataModelDocument = function(filePath, group, opt) {
    if (!group) {
        group = 'Resources';
    }
    if (!this.getPBXGroupByKey(group)) {
        group = this.findPBXGroupKey({ name: group });
    }

    var file = new pbxFile(filePath, opt);

    if (!file || this.hasFile(file.path)) return null;

    file.fileRef = this.generateUuid();
    this.addToPbxGroup(file, group);

    if (!file) return false;

    file.target = opt ? opt.target : undefined;
    file.uuid = this.generateUuid();

    this.addToPbxBuildFileSection(file);
    this.addToPbxSourcesBuildPhase(file);

    file.models = [];
    var currentVersionName;
    var modelFiles = fs.readdirSync(file.path);
    for (var index in modelFiles) {
        var modelFileName = modelFiles[index];
        var modelFilePath = $path.join(filePath, modelFileName);

        if (modelFileName == '.xccurrentversion') {
            currentVersionName = plist.readFileSync(modelFilePath)._XCCurrentVersionName;
            continue;
        }

        var modelFile = new pbxFile(modelFilePath);
        modelFile.fileRef = this.generateUuid();

        this.addToPbxFileReferenceSection(modelFile);

        file.models.push(modelFile);

        if (currentVersionName && currentVersionName === modelFileName) {
            file.currentModel = modelFile;
        }
    }

    if (!file.currentModel) {
        file.currentModel = file.models[0];
    }

    this.addToXcVersionGroupSection(file);

    return file;
}

pbxProject.prototype.addTargetAttribute = function(prop, value, target) {
    var attributes = this.getFirstProject()['firstProject']['attributes'];
    if (attributes['TargetAttributes'] === undefined) {
        attributes['TargetAttributes'] = {};
    }
    target = target || this.getFirstTarget();
    if (attributes['TargetAttributes'][target.uuid] === undefined) {
      attributes['TargetAttributes'][target.uuid] = {};
    }
    attributes['TargetAttributes'][target.uuid][prop] = value;
}

pbxProject.prototype.removeTargetAttribute = function(prop, target) {
    var attributes = this.getFirstProject()['firstProject']['attributes'];
    target = target || this.getFirstTarget();
    if (attributes['TargetAttributes'] &&
        attributes['TargetAttributes'][target.uuid]) {
        delete attributes['TargetAttributes'][target.uuid][prop];
    }
}

module.exports = pbxProject;