add get and insert models for timers

internal/data/models.go

@@ -39,6 +39,7 @@ type Models struct {
 	}
 	Timers interface {
 		Get(name string) (*Timer, error)
+		Insert(timer *Timer) error
 	}
 }
 
@@ -47,6 +48,6 @@ func NewModels(db *sql.DB) Models {
 		Channels: ChannelModel{DB: db},
 		Users:    UserModel{DB: db},
 		Commands: CommandModel{DB: db},
-		Timers:   TimerModel{DB, db},
+		Timers:   TimerModel{DB: db},
 	}
 }

internal/data/timers.go

@@ -44,3 +44,30 @@ func (t TimerModel) Get(name string) (*Timer, error) {
 
 	return &timer, nil
 }
+
+// Insert adds a command into the database.
+func (t TimerModel) Insert(timer *Timer) error {
+	query := `
+	INSERT into timers(name, text, channel, repeat)
+	VALUES ($1, $2, $3, $4)
+	RETURNING id;
+	`
+
+	args := []interface{}{timer.Name, timer.Text, timer.Channel, timer.Repeat}
+
+	result, err := t.DB.Exec(query, args...)
+	if err != nil {
+		return err
+	}
+
+	rowsAffected, err := result.RowsAffected()
+	if err != nil {
+		return err
+	}
+
+	if rowsAffected == 0 {
+		return ErrCommandRecordAlreadyExists
+	}
+
+	return nil
+}