HOLY REFACTOR GOOD GRIEF (also finally started some CRUD work)

Signed-off-by: ari melody <ari@arimelody.me>

music/controller/track.go

@@ -0,0 +1,69 @@
+package music
+
+import (
+	"arimelody.me/arimelody.me/music/model"
+	"github.com/jmoiron/sqlx"
+)
+
+// DATABASE
+
+func PullAllTracks(db *sqlx.DB) ([]model.Track, error) {
+    var tracks = []model.Track{}
+
+	err := db.Select(&tracks, "SELECT id, title, description, lyrics, preview_url FROM musictrack RETURNING id")
+	if err != nil {
+        return nil, err
+	}
+
+    return tracks, nil
+}
+
+func CreateTrackDB(db *sqlx.DB, track *model.Track) (string, error) {
+    var trackID string
+    err := db.QueryRow(
+        "INSERT INTO musictrack (title, description, lyrics, preview_url) "+
+        "VALUES ($1, $2, $3, $4) "+
+        "RETURNING id",
+        track.Title,
+        track.Description,
+        track.Lyrics,
+        track.PreviewURL,
+    ).Scan(&trackID)
+    if err != nil {
+        return "", err
+    }
+
+    return trackID, nil
+}
+
+func UpdateTrackDB(db *sqlx.DB, track *model.Track) error {
+    _, err := db.Exec(
+        "UPDATE musictrack "+
+        "SET title=$2, description=$3, lyrics=$4, preview_url=$5 "+
+        "WHERE id=$1"+
+        "RETURNING id",
+        track.ID,
+        track.Title,
+        track.Description,
+        track.Lyrics,
+        track.PreviewURL,
+    )
+    if err != nil {
+        return err
+    }
+
+    return nil
+}
+
+func DeleteTrackDB(db *sqlx.DB, trackID string) error {
+    _, err := db.Exec(
+        "DELETE FROM musictrack "+
+        "WHERE id=$1",
+        trackID,
+    )
+    if err != nil {
+        return err
+    }
+
+    return nil
+}