fetchAll从index.js提到各个utils中

netease_music/src/getInfo/songInfoUtils.js

@@ -2,6 +2,7 @@ const fs = require('fs');
 const path = require('path');
 
 const requestUtils = require('../../../utils/requestUtils');
+const sleepUtils = require('../../../utils/sleepUtils');
 
 const dbUtils = global.dbUtils;
 
@@ -22,6 +23,28 @@ async function getFromDatabase({ songId }) {
     return songInfo;
 }
 
+// 从数据库中查出还缺少的歌曲，并进行爬取
+async function fetchAll() {
+    console.log("start fetching songs ...");
+    var songIds = await dbUtils.query(`
+        SELECT DISTINCT song_id FROM song_artist_relation WHERE song_id NOT IN ( SELECT DISTINCT song_id FROM song )
+        UNION
+        SELECT DISTINCT song_id FROM song_album_relation WHERE song_id NOT IN ( SELECT DISTINCT song_id FROM song )
+    `, []);
+    songIds = songIds.map(item => item.song_id);
+    for (let i = 0; i < songIds.length; i++) {
+        await global.checkIsExit();
+        const songId = songIds[i];
+        console.log(`${i}/${songIds.length} | song: ${songId} | ${await global.statistics()}`);
+        try {
+            await fetch({ songId: songId });
+        } catch (err) {
+            console.error(err);
+        }
+        await sleepUtils.sleep(global.sleepTime);
+    }
+}
+
 // 获取音乐详情
 async function fetch({ songId, debug = false }) {
     let result = await dbUtils.query('SELECT count(*) as count FROM song WHERE song_id = ?', [songId]);
@@ -119,4 +142,5 @@ async function fetch({ songId, debug = false }) {
 module.exports = {
     getFromDatabase: getFromDatabase,
     fetch: fetch,
+    fetchAll: fetchAll,
 }