go: db: Implement active level

GoBot/db/active.go

@@ -0,0 +1,23 @@
+package db
+
+func GetActiveLevel(discordID string) (int, error) {
+	rows, err := db.Query("SELECT level FROM activeLevel WHERE id=?", discordID)
+	if err != nil {
+		return 0, err
+	}
+	defer rows.Close()
+	if rows.Next() {
+		var activeLevel int
+		err := rows.Scan(&activeLevel)
+		if err != nil {
+			return 0, err
+		}
+		return activeLevel, nil
+	}
+	return 0, ErrNotFound
+}
+
+func AddActiveLevel(discordID string, addedLevel int) error {
+	_, err := db.Exec("INSERT INTO activeLevel(id, level) VALUES(?, ?) ON DUPLICATE KEY UPDATE level=level+?", discordID, addedLevel, addedLevel)
+	return err
+}

GoBot/db/db.go

@@ -39,4 +39,8 @@ func init() {
 	if err != nil {
 		panic(err)
 	}
+	_, err = db.Exec("CREATE TABLE IF NOT EXISTS activeLevel (id TEXT, level INTEGER, UNIQUE(id))")
+	if err != nil {
+		panic(err)
+	}
 }