package database

import (
	"database/sql"
	"time"
)

type Update struct {
	Name string
	Time time.Time
}

type ListUpdatesQuery struct {
	Limit int
}

func ListUpdates(dbConn *sql.DB, query ListUpdatesQuery) ([]Update, error) {
	rows, err := dbConn.Query(`SELECT name, time FROM updates ORDER BY time DESC LIMIT ?;`, query.Limit)
	if err != nil {
		return nil, err
	}
	defer rows.Close()

	updates := []Update{}
	for rows.Next() {
		var update Update
		err := rows.Scan(&update.Name, &update.Time)
		if err != nil {
			return nil, err
		}
		updates = append(updates, update)
	}

	return updates, nil
}

func SaveUpdate(db *sql.DB, update *Update) (*Update, error) {
	_, err := db.Exec("INSERT INTO updates (time, name) VALUES (?, ?)", update.Time, update.Name)

	if err != nil {
		return nil, err
	}
	return update, nil
}