package db

import (
	"database/sql"
	"errors"

	"git.tijl.dev/tijl/tijl.dev/internal/config"
	"git.tijl.dev/tijl/tijl.dev/internal/queries"
	"git.tijl.dev/tijl/tijl.dev/migrations"
	log "git.tijl.dev/tijl/tijl.dev/modules/logger"
	"github.com/golang-migrate/migrate/v4"
	"github.com/golang-migrate/migrate/v4/database/pgx/v5"
	"github.com/golang-migrate/migrate/v4/source/iofs"
	_ "github.com/jackc/pgx/v5/stdlib"
)

var DB *sql.DB
var Queries *queries.Queries

func Load() {
	var err error
	DB, err = sql.Open("pgx", config.Config.DB)
	if err != nil {
		log.Fatal().Err(err).Msg("failed to connect to database")
	}
	//defer DB.Close()
	Queries = queries.New(DB)
	log.Info().Msg("connected to database")

	/*
		Migrate
	*/
	driver, err := pgx.WithInstance(DB, &pgx.Config{})
	if err != nil {
		log.Fatal().Err(err).Msg("failed to get database driver for migration")
	}
	source, err := iofs.New(migrations.Embed, ".")
	if err != nil {
		log.Fatal().Err(err).Msg("failed to get migrations source")
	}
	m, err := migrate.NewWithInstance("iofs", source, "pgx", driver)
	if err != nil {
		log.Fatal().Err(err).Msg("failed to initialize migration")
	}
	migerr := m.Up()
	if (migerr != nil) && (!errors.Is(migerr, migrate.ErrNoChange)) {
		log.Fatal().Err(migerr).Msg("failed to run migrations")
	}
	log.Info().Msg("migrated database")

}