backend/src/media/YoutubeInformation.js

@@ -0,0 +1,139 @@
+const {LogType} = require('loguix');
+const clog = new LogType("YoutubeInformation");
+const config = require('../utils/Database/Configuration');
+const YOUTUBE_API_KEY = config.getYoutubeApiKey()
+const { Song } = require('../player/Song');
+const { Playlist } = require('../player/Playlist');
+const { getReadableDuration } = require('../utils/TimeConverter');
+
+
+async function 
+getQuery(query) {
+    // Check Query not null and a string
+    if(query === null && typeof query !== 'string') {
+        clog.error("Impossible de rechercher une vidéo YouTube, car la requête est nulle");
+        return null;
+    }
+    // * Fetch
+    try {
+        const response = await fetch(`https://www.googleapis.com/youtube/v3/search?part=snippet&type=video&q=${encodeURIComponent(query)}&key=${YOUTUBE_API_KEY}`);
+        const data = await response.json();
+        
+        var videoLink = null
+        const videoId = data.items[0]?.id.videoId;
+        if(videoId) videoLink = `https://www.youtube.com/watch?v=${videoId}`;
+        if(videoLink === null) {
+            clog.error("Impossible de récupérer le lien de la vidéo YouTube à partir de la requête");
+            return null;
+        }
+        const song = await getVideo(videoLink);
+     
+        return song;
+       
+    } catch (error) {
+        clog.error('Erreur lors de la recherche YouTube: ' + error);
+        return null;
+    }
+}
+
+async function getVideo(url) {
+    // Extract video ID from URL if it exists and is valid (11 characters) and if not return "NOT_VALID"
+    // Extract id from youtu.be youtube.com and music.youtube.com
+    const videoId = url.match(/(?:youtu\.be\/|youtube\.com\/|music\.youtube\.com\/)(?:watch\?v=)?([a-zA-Z0-9_-]{11})/);
+    if(videoId === null) {
+        clog.error("Impossible de récupérer l'identifiant de la vidéo YouTube à partir de l'URL");
+        return null;
+    }
+    // Fetch video information
+    try {
+        const response = await fetch(`https://www.googleapis.com/youtube/v3/videos?part=snippet&id=${videoId[1]}&key=${YOUTUBE_API_KEY}`);
+        const data = await response.json();
+        
+        const video = data.items[0];
+        if(video) {
+
+            const songReturn = new Song()
+            await songReturn.processYoutubeVideo(video);
+           
+            return songReturn;
+        } else {
+            clog.error("Impossible de récupérer la vidéo YouTube à partir de l'identifiant");
+            return null;
+        }
+    } catch (error) {
+        clog.error('Erreur lors de la recherche de la vidéo YouTube:' +  error);
+        return null;
+    }
+
+
+    
+    
+}
+
+async function getPlaylist(url) {
+    // Check Query not null and a string
+    if(url === null && typeof url !== 'string') {
+        clog.error("Impossible de rechercher une playlist YouTube, car la requête est nulle");
+        return null;
+    }
+    // * Fetch
+    try {
+        // For Playlist
+        const playlistId = url.match(/(?:youtu\.be\/|youtube\.com\/|music\.youtube.com\/)(?:playlist\?list=)?([a-zA-Z0-9_-]{34})/);
+        if(playlistId === null) {
+            clog.error("Impossible de récupérer l'identifiant de la vidéo YouTube à partir de l'URL");
+            return null;
+        }
+        const response = await fetch(`https://www.googleapis.com/youtube/v3/search?part=snippet&type=playlist&q=${encodeURIComponent(playlistId[1])}&key=${YOUTUBE_API_KEY}`);
+        const data = await response.json();
+
+        if(data.items.length === 0) {
+            clog.error("Impossible de récupérer la playlist YouTube à partir de l'identifiant");
+            return null;
+        }
+
+        const playlist = new Playlist()
+        playlist.type = "youtube"
+        playlist.author = data.items[0].snippet.channelTitle
+        playlist.authorId = data.items[0].snippet.channelId
+        playlist.title = data.items[0].snippet.title
+        playlist.thumbnail = data.items[0].snippet.thumbnails.high.url
+        playlist.description = data.items[0].snippet.description    
+        playlist.url = `https://www.youtube.com/playlist?list=${playlistId[1]}`
+        playlist.id = playlistId[1]
+
+    
+
+
+        // Get all songs from playlist
+
+        const responsePlaylist = await fetch(`https://www.googleapis.com/youtube/v3/playlistItems?part=snippet&playlistId=${playlistId[1]}&key=${YOUTUBE_API_KEY}&maxResults=100`);
+        const dataPlaylist = await responsePlaylist.json();
+
+        if(dataPlaylist.items.length === 0) {
+            clog.error("Impossible de récupérer les vidéos de la playlist YouTube à partir de l'identifiant ou la playlist est vide");
+            return null;    
+        }
+
+        for (const video of dataPlaylist.items) {
+            const song = new Song()
+            video.id = video.snippet.resourceId.videoId
+            await song.processYoutubeVideo(video)
+            //? Add seconds to playlist duration
+            playlist.duration += song.duration
+            playlist.songs.push(song)
+        }
+        playlist.readduration = getReadableDuration(playlist.duration)
+        return playlist;
+     
+     
+       
+       
+    } catch (error) {
+        clog.error('Erreur lors de la recherche YouTube: ' + error);
+        return null;
+    }
+
+}
+
+module.exports = {getQuery, getVideo, getPlaylist}