package config

import (
	"allapp/db/repo"
	"context"
	"fmt"
	"time"

	"github.com/jackc/pgx/v5/pgxpool"
)

func initDB() (*pgxpool.Pool, *repo.Queries, error) {
	cfg := conf.Postgres

	sslMode := "disable"
	if cfg.SslMode {
		sslMode = "require"
	}

	dsn := fmt.Sprintf(
		"postgres://%s:%s@%s:%d/%s?sslmode=%s&TimeZone=%s",
		cfg.User, cfg.Password, cfg.Host, cfg.Port, cfg.Dbname, sslMode, cfg.TimeZone,
	)

	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()

	// 使用可修改配置
	cfgPool, err := pgxpool.ParseConfig(dsn)
	if err != nil {
		return nil, nil, fmt.Errorf("parse pgx config failed: %w", err)
	}

	cfgPool.MaxConns = cfg.MaxOpenConns
	cfgPool.MinConns = cfg.MaxIdleConns
	cfgPool.MaxConnLifetime = cfg.ConnMaxLifetime

	pool, err := pgxpool.NewWithConfig(ctx, cfgPool)
	if err != nil {
		return nil, nil, fmt.Errorf("create pgx pool failed: %w", err)
	}

	// 测试连接
	if err := pool.Ping(ctx); err != nil {
		return nil, nil, fmt.Errorf("ping database failed: %w", err)
	}

	queries := repo.New(pool)
	return pool, queries, nil
}