边做边学

Helper/README.md

@@ -6,8 +6,10 @@
 1. 在`LeetCode-in-Go`目录下，添加文本文件`config.toml`。
 1. 把以下内容复制到`config.toml`中。
 1. 把`config.toml`中的`test`分别修改为你的 leetcode `用户名`和`密码`。
+1. 去 leetcode 登录后，把网站 cookie 复制 (有洁癖者只要复制 LEETCODE_SESSION 就够了) 并替换 `config.toml`中的`Cookie`。
 
 ```toml
-Login="test"
+Username="test"
 Password="test"
+Cookie="LEETCODE_SESSION=XXXXXXXXX;"
 ```

Helper/buildProblemDir.go

@@ -4,7 +4,6 @@ import (
 	"fmt"
 	"log"
 	"os"
-	"os/exec"
 	"runtime/debug"
 	"strings"
 	"syscall"
@@ -52,6 +51,7 @@ func build(p problem) {
 		}
 	}()
 
+    // windows用户注释这两行
 	mask := syscall.Umask(0)
 	defer syscall.Umask(mask)
 
@@ -63,24 +63,29 @@ func build(p problem) {
 
 	log.Printf("开始创建 %d %s 的文件夹...\n", p.ID, p.Title)
 
+	content, fc := getGraphql(p)
+	if fc == "" {
+		log.Panicf("查无Go语言写法")
+	}
+
 	// 利用 chrome 打开题目页面
-	go func() {
-		cmd := exec.Command("google-chrome", p.link())
-		_, err = cmd.Output()
-		if err != nil {
-			panic(err.Error())
-		}
-	}()
+	// go func() {
+	// 	cmd := exec.Command("google-chrome", p.link())
+	// 	_, err = cmd.Output()
+	// 	if err != nil {
+	// 		panic(err.Error())
+	// 	}
+	// }()
 
-	fc := getFunction(p.link())
+	// fc := getFunction(p.link())
 
-	fcName, para, ans, fc := parseFunction(fc)
+	fcName, para, ans, _ := parseFunction(fc)
 
 	creatGo(p, fc, ans)
 
 	creatGoTest(p, fcName, para, ans)
 
-	creatREADME(p)
+	creatREADME(p, content)
 
 	log.Printf("%d.%s 的文件夹，创建完毕。\n", p.ID, p.Title)
 }

Helper/config.go

@@ -14,6 +14,7 @@ const (
 type config struct {
 	Username string
 	Password string
+	Cookie string
 
 	// 以下是电子邮件设置
 	SMTP          string

Helper/leetcode-getGraphql.go

@@ -0,0 +1,75 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"io/ioutil"
+	"log"
+	"net/http"
+)
+
+type JsL4CodeSnippets []struct {
+	Lang string
+	Code string
+}
+
+type JsL3Detail struct {
+	Content      string
+	CodeSnippets JsL4CodeSnippets
+}
+
+type JsL2Question struct {
+	Question JsL3Detail
+}
+
+type JsL1Data struct {
+	Data JsL2Question
+}
+
+func getGraphql(p problem) (string, string) {
+	// req := newReq()
+
+	params := make(map[string]interface{})
+	params["operationName"] = "questionData"
+	params["query"] = "query questionData($titleSlug: String!) { question(titleSlug: $titleSlug) { content codeSnippets { lang code } } }"
+	titleSlug := make(map[string]string)
+	titleSlug["titleSlug"] = p.TitleSlug
+	params["variables"] = titleSlug
+
+	// Make this JSON
+	postJson, _ := json.Marshal(params)
+
+	// http.POST expects an io.Reader, which a byte buffer does
+	postContent := bytes.NewBuffer(postJson)
+
+	resp, err := http.Post("https://leetcode.com/graphql", "application/json", postContent)
+	if err != nil {
+		log.Fatal("getGraphql: POST Error: " + err.Error())
+	}
+
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		log.Fatal("抓题失败 code: " + resp.Status)
+	}
+
+	respBytes, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		log.Fatal("getGraphql: Read Error: " + err.Error())
+	}
+
+	//byte数组直接转成string，优化内存
+	// str := (*string)(unsafe.Pointer(&respBytes))
+	// fmt.Printf("%#v\n", *str)
+
+	res := &JsL1Data{}
+	json.Unmarshal(respBytes, &res)
+
+	code := ""
+	for _, qc := range res.Data.Question.CodeSnippets {
+		if qc.Lang == "Go" {
+			code = qc.Code
+		}
+	}
+	return res.Data.Question.Content, code
+}

Helper/problemGoFile.go

@@ -9,7 +9,7 @@ import (
 )
 
 func parseFunction(fc string) (fcName, para, ansType, nfc string) {
-	log.Println("准备分解函数:", fc)
+	log.Println("正在分解函数")
 
 	defer func() { // 必须要先声明defer，否则不能捕获到panic异常
 		if err := recover(); err != nil {

Helper/problemReadme.go

@@ -4,20 +4,24 @@ import (
 	"fmt"
 	"sort"
 	"strings"
+
+	"github.com/TruthHun/html2md"
 )
 
-func creatREADME(p problem) {
+func creatREADME(p problem, s string) {
 	fileFormat := `# [%d. %s](%s)
 
 %s
 `
 
 	questionDescription := strings.TrimSpace(getDescription(p.link()))
 
-	content := fmt.Sprintf(fileFormat, p.ID, p.Title, p.link(), questionDescription)
+	content := fmt.Sprintf(fileFormat, p.ID, p.Title, p.link(), questionDescription) + s + "\n\n## 解题思路\n\n## 可能的變化"
 
 	content = replaceCharacters(content)
 
+	content = html2md.Convert(content)
+
 	filename := fmt.Sprintf("%s/README.md", p.Dir())
 
 	write(filename, content)
@@ -36,7 +40,7 @@ func replaceCharacters(s string) string {
 		"&lt;":       "<",
 		"&gt;":       ">",
 		"&ge;":       ">=",
-		"&nbsp;":     "`",
+		"&nbsp;":     " ",
 		"&amp;":      "&",
 		"&#39;":      "'",
 		"   \n":      "\n",

Helper/signin.go

@@ -23,33 +23,37 @@ func newReq() *request.Request {
 // 登录 leetcode
 // 返回的 req 带有 cookie
 func signin() *request.Request {
-	log.Println("正在登录中...")
+	// log.Println("正在登录中...")
 	cfg := getConfig()
 
 	// 对 req 赋值
 	req := request.NewRequest(new(http.Client))
 
 	// 配置request
 	req.Headers = map[string]string{
+		"Content-Type":    "application/json",
 		"Accept-Encoding": "",
-		"Referer":         "https://leetcode.com/",
+		"cookie":          cfg.Cookie,
+		"Referer":         "https://leetcode.com/accounts/login/",
+		"origin":          "https://leetcode.com",
 	}
 
 	// login
-	csrfToken := getCSRFToken(req)
+	// csrfToken := getCSRFToken(req)
 
-	log.Printf("csrfToken: %s", csrfToken)
+	// log.Printf("csrfToken: %s", csrfToken)
 
-	req.Data = map[string]string{
-		"csrfmiddlewaretoken": csrfToken,
-		"login":               cfg.Username,
-		"password":            cfg.Password,
-	}
-	if err := login(req); err != nil {
-		log.Fatal(err)
-	}
+	// req.Data = map[string]string{
+	// 	"csrfmiddlewaretoken": csrfToken,
+	// 	"login":               cfg.Username,
+	// 	"password":            cfg.Password,
+	// 	"next":                "problems",
+	// }
+	// if err := login(req); err != nil {
+	// 	log.Fatal(err)
+	// }
 
-	log.Println("成功登录")
+	// log.Println("成功登录")
 
 	return req
 }