package dorm

import (
	"context"
	"errors"
	"fmt"
	"go.dtapp.net/gotime"
	"gorm.io/driver/postgres"
	"gorm.io/gorm"
	"gorm.io/gorm/logger"
	"time"
)

// NewGormPostgresqlClient 创建GormClient实例 postgresql
func NewGormPostgresqlClient(ctx context.Context, config *GormClientConfig) (*GormClient, error) {

	var err error
	c := &GormClient{}
	c.config = config

	// 判断路径
	if c.config.LogPath == "" {
		logsURL = "/logs/postgresql"
	} else {
		logsURL = c.config.LogPath
	}

	if c.config.LogStatus {
		var slowThreshold time.Duration
		var logLevel logger.LogLevel
		if c.config.LogSlow == 0 {
			slowThreshold = 100 * time.Millisecond
		} else {
			slowThreshold = time.Duration(c.config.LogSlow)
		}
		if c.config.LogLevel == "Error" {
			logLevel = logger.Error
		} else if c.config.LogLevel == "Warn" {
			logLevel = logger.Warn
		} else {
			logLevel = logger.Info
		}
		c.db, err = gorm.Open(postgres.Open(c.config.Dns), &gorm.Config{
			Logger: logger.New(
				writer{},
				logger.Config{
					SlowThreshold:             slowThreshold, // 慢SQL阈值
					LogLevel:                  logLevel,      // 日志级别
					IgnoreRecordNotFoundError: true,          // 忽略ErrRecordNotFound（记录未找到）错误
					Colorful:                  true,          // 禁用彩色打印
				},
			),
			NowFunc: func() time.Time {
				return gotime.Current().Now().Local()
			},
		})
	} else {
		c.db, err = gorm.Open(postgres.Open(c.config.Dns), &gorm.Config{})
	}

	if err != nil {
		return nil, errors.New(fmt.Sprintf("连接失败：%v", err))
	}

	c.sqlDd, err = c.db.DB()
	if err != nil {
		return nil, errors.New(fmt.Sprintf("获取通用数据库对象失败：%v", err))
	}

	// 设置空闲连接池中连接的最大数量
	if c.config.ConnSetMaxIdle == 0 {
		c.sqlDd.SetMaxIdleConns(10)
	} else {
		c.sqlDd.SetMaxIdleConns(c.config.ConnSetMaxIdle)
	}

	// 设置打开数据库连接的最大数量
	if c.config.ConnSetMaxOpen == 0 {
		c.sqlDd.SetMaxOpenConns(100)
	} else {
		c.sqlDd.SetMaxOpenConns(c.config.ConnSetMaxOpen)
	}

	// 设置了连接可复用的最大时间
	if c.config.ConnSetConnMaxLifetime == 0 {
		c.sqlDd.SetConnMaxLifetime(time.Hour)
	} else {
		c.sqlDd.SetConnMaxLifetime(time.Duration(c.config.ConnSetConnMaxLifetime))
	}

	return c, nil
}