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

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

music/controller/artist.go

@@ -0,0 +1,65 @@
+package music
+
+import (
+	"arimelody.me/arimelody.me/music/model"
+	"github.com/jmoiron/sqlx"
+)
+
+// DATABASE
+
+func PullAllArtists(db *sqlx.DB) ([]model.Artist, error) {
+	var artists = []model.Artist{}
+
+	err := db.Select(&artists, "SELECT * FROM artist")
+	if err != nil {
+		return nil, err
+	}
+
+	return artists, nil
+}
+
+func CreateArtistDB(db *sqlx.DB, artist *model.Artist) error {
+    _, err := db.Exec(
+		"INSERT INTO artist (id, name, website, avatar) "+
+        "VALUES ($1, $2, $3, $4)",
+		artist.ID,
+		artist.Name,
+		artist.Website,
+        artist.Avatar,
+	)
+    if err != nil {
+        return err
+    }
+    
+    return nil
+}
+
+func UpdateArtistDB(db *sqlx.DB, artist *model.Artist) error {
+    _, err := db.Exec(
+        "UPDATE artist "+
+        "SET name=$2, website=$3, avatar=$4 "+
+        "WHERE id=$1",
+        artist.ID,
+        artist.Name,
+        artist.Website,
+        artist.Avatar,
+    )
+    if err != nil {
+        return err
+    }
+
+    return nil
+}
+
+func DeleteArtistDB(db *sqlx.DB, artistID string) error {
+    _, err := db.Exec(
+        "DELETE FROM artist "+
+        "WHERE id=$1",
+        artistID,
+    )
+    if err != nil {
+        return err
+    }
+
+    return nil
+}