check if timeline notification entry exists before create

src/services/timelineService.js

@@ -2,10 +2,13 @@
  * Timeline Service
  * Interacts with InformixDB
  */
+const util = require('util')
 const logger = require('../common/logger')
 const helper = require('../common/helper')
 
-const QUERY_ENABLE_TIMELINE_NOTIFICATIONS = 'INSERT INTO project_info (project_id, project_info_type_id, value, create_user, create_date, modify_user, modify_date) VALUES (?, "11", "On", ?, CURRENT, ?, CURRENT)'
+const QUERY_GET_TIMELINE_NOTIFICATION_SETTINGS = 'SELECT value FROM project_info WHERE project_id = %d and project_info_type_id = %d'
+const QUERY_CREATE_TIMELINE_NOTIFICATIONS = 'INSERT INTO project_info (project_id, project_info_type_id, value, create_user, create_date, modify_user, modify_date) VALUES (?, "11", "On", ?, CURRENT, ?, CURRENT)'
+const QUERY_UPDATE_TIMELINE_NOTIFICATIONS = 'UPDATE project_info SET value = "On", modify_user = ?, modify_date = CURRENT WHERE project_info_type_id = "11" AND project_id = ?'
 
 /**
  * Prepare Informix statement
@@ -19,6 +22,25 @@ async function prepare (connection, sql) {
   return Promise.promisifyAll(stmt)
 }
 
+/**
+ * Get teh timeline notification settings entry
+ * @param {Number} challengeLegacyId the legacy challenge ID
+ */
+async function getTimelineNotifications (challengeLegacyId) {
+  // logger.debug(`Getting Groups for Challenge ${challengeLegacyId}`)
+  const connection = await helper.getInformixConnection()
+  let result = null
+  try {
+    result = await connection.queryAsync(util.format(QUERY_GET_TIMELINE_NOTIFICATION_SETTINGS, challengeLegacyId, 11))
+  } catch (e) {
+    logger.error(`Error in 'getTermsForChallenge' ${e}`)
+    throw e
+  } finally {
+    await connection.closeAsync()
+  }
+  return result
+}
+
 /**
  * Enable timeline notifications
  * @param {Number} challengeLegacyId the legacy challenge ID
@@ -29,20 +51,27 @@ async function enableTimelineNotifications (challengeLegacyId, createdBy) {
   let result = null
   try {
     // await connection.beginTransactionAsync()
-    const query = await prepare(connection, QUERY_ENABLE_TIMELINE_NOTIFICATIONS)
-    result = await query.executeAsync([challengeLegacyId, createdBy, createdBy])
+    const [existing] = await getTimelineNotifications(challengeLegacyId)
+    if (existing) {
+      const query = await prepare(connection, QUERY_UPDATE_TIMELINE_NOTIFICATIONS)
+      result = await query.executeAsync([createdBy, challengeLegacyId])
+    } else {
+      const query = await prepare(connection, QUERY_CREATE_TIMELINE_NOTIFICATIONS)
+      result = await query.executeAsync([challengeLegacyId, createdBy, createdBy])
+    }
     // await connection.commitTransactionAsync()
+    logger.info(`Notifications have been enabled for challenge ${challengeLegacyId}`)
   } catch (e) {
     logger.error(`Error in 'enableTimelineNotifications' ${e}, rolling back transaction`)
     await connection.rollbackTransactionAsync()
     throw e
   } finally {
-    logger.info(`Notifications have been enabled for challenge ${challengeLegacyId}`)
     await connection.closeAsync()
   }
   return result
 }
 
 module.exports = {
+  getTimelineNotifications,
   enableTimelineNotifications
 }