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

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

music/controller/credit.go

@@ -0,0 +1,70 @@
+package music
+
+import (
+	"arimelody.me/arimelody.me/music/model"
+	"github.com/jmoiron/sqlx"
+)
+
+// DATABASE
+
+func PullReleaseCredits(db *sqlx.DB, releaseID string) ([]model.Credit, error) {
+    var credits = []model.Credit{}
+
+    err := db.Select(
+        &credits,
+        "SELECT * FROM musiccredit WHERE release=$1",
+        releaseID,
+    )
+    if err != nil {
+        return nil, err
+    }
+
+    return credits, nil
+}
+
+func CreateCreditDB(db *sqlx.DB, releaseID string, artistID string, credit *model.Credit) (error) {
+    _, err := db.Exec(
+        "INSERT INTO musiccredit (release, artist, role, is_primary) "+
+        "VALUES ($1, $2, $3, $4)",
+        releaseID,
+        artistID,
+        credit.Role,
+        credit.Primary,
+    )
+    if err != nil {
+        return err
+    }
+
+    return nil
+}
+
+func UpdateCreditDB(db *sqlx.DB, releaseID string, artistID string, credit *model.Credit) (error) {
+    _, err := db.Exec(
+        "UPDATE musiccredit SET "+
+        "role=$3, is_primary=$4 "+
+        "WHERE release=$1, artist=$2",
+        releaseID,
+        artistID,
+        credit.Role,
+        credit.Primary,
+    )
+    if err != nil {
+        return err
+    }
+
+    return nil
+}
+
+func DeleteCreditDB(db *sqlx.DB, releaseID string, artistID string) (error) {
+    _, err := db.Exec(
+        "DELETE FROM musiccredit "+
+        "WHERE release=$1, artist=$2",
+        releaseID,
+        artistID,
+    )
+    if err != nil {
+        return err
+    }
+
+    return nil
+}