// db/db.go
package db

import (
	"cn/oneao/base-go/conf"
	sqlcg "cn/oneao/base-go/db/sqlc"
	"context"
	"fmt"
	"github.com/jackc/pgx/v5/pgxpool"
	"time"
)

var (
	DB      *pgxpool.Pool
	Queries *sqlcg.Queries
)

func InitDB() {
	cfg := conf.GetConf().Pgsql

	sslMode := "disable"
	if cfg.SllMode {
		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 {
		panic(err)
	}

	// 给连接池参数设置默认值
	if cfg.MaxOpenConns <= 0 {
		cfg.MaxOpenConns = 10
	}
	if cfg.MaxIdleConns <= 0 {
		cfg.MaxIdleConns = 5
	}
	if cfg.ConnMaxLifetime <= 0 {
		cfg.ConnMaxLifetime = 30 * time.Minute
	}

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

	pool, err := pgxpool.NewWithConfig(ctx, cfgPool)
	if err != nil {
		panic(err)
	}

	// 测试连接
	if err := pool.Ping(ctx); err != nil {
		panic(err)
	}

	DB = pool
	Queries = sqlcg.New(DB)
}