//go:build pq
// +build pq

package postgresql

import (
	"context"
	"database/sql"
	"time"

	"git.hexq.cn/tiglog/mydb/internal/sqladapter"
	_ "github.com/lib/pq"
)

func (*database) OpenDSN(sess sqladapter.Session, dsn string) (*sql.DB, error) {
	connURL, err := ParseURL(dsn)
	if err != nil {
		return nil, err
	}
	if tz := connURL.Options["timezone"]; tz != "" {
		loc, _ := time.LoadLocation(tz)
		ctx := context.WithValue(sess.Context(), "timezone", loc)
		sess.SetContext(ctx)
	}
	return sql.Open("postgres", dsn)
}