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database(knex).js
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database(knex).js
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//requiring in id3tags.js file.
var config = require('./config');
var mysql = require('mysql');
var knex = require('knex')({
client: 'mysql',
connection: {
host: config.db.host,
user: config.db.user,
password: config.db.password,
database: config.db.database
}
});
exports.insertSong = function(path, metadata) {
var title = metadata.title,
artist = metadata.artist,
album = metadata.album,
genre = metadata.genre[0];
checkGenre(path, metadata);
};
var newlyRegisteredGenre = [];
function checkGenre(path, metadata) {
var genre = metadata.genre[0];
knex('genres')
.where('name', genre)
.then(function(rows) {
var nbMatch = rows.length;
if (nbMatch == 0) {
// Checking if the genre was already told to be inserted by Mysql
if (newlyRegisteredGenre.indexOf(genre) == -1) {
newlyRegisteredGenre.push(genre);
var insertStatement = { id: '', name: genre };
knex('genres')
.insert(insertStatement)
.then(function(rows) {
metadata['genre_id'] = rows['insertId'];
checkArtist(path, metadata);
})
.catch(function(error) { console.error(error); });
}
} else {
metadata['genre_id'] = rows[0]['id'];
checkArtist(path, metadata);
}
})
.catch(function(error) { console.error(error); });
}
var newlyRegisteredArtist = [];
function checkArtist(path, metadata) {
var artist = metadata.artist;
knex('artists')
.where('name', artist)
.then(function(rows) {
var nbMatch = rows.length;// ce code ne semble pas etre exécuté !
if (nbMatch == 0) {
if (newlyRegisteredArtist.indexOf(artist) == -1) {
newlyRegisteredArtist.push(artist);
var insertStatement = { id: '', name: artist };
knex('artists').insert(insertStatement)
.then(function(rows) {
console.log(rows);
metadata['artist_id'] = rows['insertId'];
checkAlbum(path, metadata);
})
.catch(function(error) { console.error(error); });
}
} else {
metadata['artist_id'] = rows[0]['id'];
checkAlbum(path, metadata);
console.log('d');
}
})
.catch(function(error) { console.error(error); });
}
var newlyRegisteredAlbum = [];
function checkAlbum(path, metadata) {
var album = metadata.album;
knex('albums')
.where('name', album)
.then(function(rows) {
nbMatch = rows.length;
if (nbMatch == 0) {
if (newlyRegisteredAlbum.indexOf(album) == -1) {
newlyRegisteredAlbum.push(album);
var insertStatement = { id: '', name: album };
knex('albums')
.insert(insertStatement)
.then(function(rows) {
metadata['album_id'] = rows['insertId'];
console.log('album id :' + metadata['album_id'])
checkSong(path, metadata);
})
.catch(function(error) { console.error(error); });
}
} else {
metadata['album_id'] = rows[0]['id'];
checkSong(path, metadata);
}
})
.catch(function(error) { console.error(error); });
}
function checkSong(path, metadata) {
var genre = metadata.genre[0];
var genre_id = metadata.genre_id;
var artist = metadata.artist;
var artist_id = metadata.artist_id;
var album = metadata.album;
var album_id = metadata.album_id;
var title = metadata.title;
knex('songs')
.where('path', path)
.then(function(rows) {
// Inserting if match
nbMatch = rows.length;
console.log('nbmatch :' + nbMatch);
if (nbMatch == 0) { //apres un resetdatabase !
var song = { id: '', name: title, path: path, id_albums: album_id, id_artists: artist_id };
knex('songs')
.insert(song)
.then(function(rows) {
metadata['song_id'] = rows['insertId']; //n'existe pas!
genreAssociation(metadata);
})
.catch(function(error) { console.error(error); });
} else {
genreAssociation(metadata);
}
})
.catch(function(error) { console.error(error); });
}
function genreAssociation(metadata) {
var genre_id = metadata.genre_id;
var song_id = metadata.song_id;
var genreRelation = { id: genre_id, id_songs: song_id };
knex('genreAssociation')
.insert(genreRelation)
.catch(function(error) { console.error(error); });
}
/**
// Adding an artist
var artist = {id : '', name: 'Pink Martini'};
connection.query("INSERT INTO artists SET ?", artist, function(err, rows, fields) {
if (err) throw err;
console.log('The insert result is: ', rows);
});
// Adding a genre
var genre = {id : '', name: 'Jazz'};
connection.query("INSERT INTO genres SET ?", genre, function(err, rows, fields) {
if (err) throw err;
console.log('The insert result is: ', rows);
});
// Adding an album
var album = {id : '', name: 'Sympathique'};
connection.query("INSERT INTO albums SET ?", album, function(err, rows, fields) {
if (err) throw err;
console.log('The insert result is: ', rows);
});
// Adding a song
var song = {id : '', name: 'Amado Mio', path: 'Pink Martini/Sympathique/Amado Mio.mp3', id_albums: 2, id_artists : 6};
connection.query("INSERT INTO songs SET ?", song, function(err, rows, fields) {
if (err) throw err;
console.log('The insert result is: ', rows);
});
// Adding genre relation
var genreRelation = {id : 3, id_songs: 1};
connection.query("INSERT INTO genreAssociation SET ?", genreRelation, function(err, rows, fields) {
if (err) throw err;
console.log('The insert result is: ', rows);
});
// SELECT statement
connection.query("SELECT * FROM songs", function(err, rows, fields) {
if (err) throw err;
console.log('The result is: ', rows);
});
*/