add duration to song table and default it's value to None for all

formats on song tags

src/db/migrations/20171015224223_add_song_duration/down.sql

@@ -0,0 +1,19 @@
+CREATE TEMPORARY TABLE songs_backup(id, path, parent, track_number, disc_number, title, artist, album_artist, year, album, artwork);
+INSERT INTO songs_backup SELECT id, path, parent, track_number, disc_number, title, artist, album_artist, year, album, artwork FROM songs;
+DROP TABLE songs;
+CREATE TABLE songs (
+	id INTEGER PRIMARY KEY NOT NULL,
+	path TEXT NOT NULL,
+	parent TEXT NOT NULL,
+	track_number INTEGER,
+	disc_number INTEGER,
+	title TEXT,
+	artist TEXT,
+	album_artist TEXT,
+	year INTEGER,
+	album TEXT,
+	artwork TEXT,
+	UNIQUE(path) ON CONFLICT REPLACE
+);
+INSERT INTO songs SELECT * FROM songs_backup;
+DROP TABLE songs_backup;

src/db/migrations/20171015224223_add_song_duration/up.sql

@@ -0,0 +1 @@
+ALTER TABLE songs ADD COLUMN duration INTEGER;

src/index.rs

@@ -49,6 +49,7 @@ pub struct Song {
 	pub year: Option<i32>,
 	pub album: Option<String>,
 	pub artwork: Option<String>,
+	pub duration: Option<i32>,
 }
 
 #[derive(Debug, Queryable, Serialize)]
@@ -84,6 +85,7 @@ struct NewSong {
 	year: Option<i32>,
 	album: Option<String>,
 	artwork: Option<String>,
+	duration: Option<i32>
 }
 
 #[derive(Debug, Insertable)]
@@ -247,6 +249,7 @@ impl<'conn> IndexBuilder<'conn> {
 						disc_number: tags.disc_number.map(|n| n as i32),
 						track_number: tags.track_number.map(|n| n as i32),
 						title: tags.title,
+						duration: tags.duration.map(|n| n as i32),
 						artist: tags.artist,
 						album_artist: tags.album_artist,
 						album: tags.album,

src/metadata.rs

@@ -15,6 +15,7 @@ pub struct SongTags {
 	pub disc_number: Option<u32>,
 	pub track_number: Option<u32>,
 	pub title: Option<String>,
+	pub duration: Option<u32>,
 	pub artist: Option<String>,
 	pub album_artist: Option<String>,
 	pub album: Option<String>,
@@ -50,6 +51,7 @@ fn read_id3(path: &Path) -> Result<SongTags> {
 	       album_artist: album_artist,
 	       album: album,
 	       title: title,
+		   duration: None,
 	       disc_number: disc_number,
 	       track_number: track_number,
 	       year: year,
@@ -98,6 +100,7 @@ fn read_ape(path: &Path) -> Result<SongTags> {
 	       album_artist: album_artist,
 	       album: album,
 	       title: title,
+		   duration: None,
 	       disc_number: disc_number,
 	       track_number: track_number,
 	       year: year,
@@ -114,6 +117,7 @@ fn read_vorbis(path: &Path) -> Result<SongTags> {
 		album_artist: None,
 		album: None,
 		title: None,
+		duration:None,
 		disc_number: None,
 		track_number: None,
 		year: None,
@@ -147,6 +151,7 @@ fn read_flac(path: &Path) -> Result<SongTags> {
 	       album_artist: vorbis.album_artist().map(|v| v[0].clone()),
 	       album: vorbis.album().map(|v| v[0].clone()),
 	       title: vorbis.title().map(|v| v[0].clone()),
+	       duration: None,
 	       disc_number: disc_number,
 	       track_number: vorbis.track(),
 	       year: year,