package corelib

import (
	"context"
	"database/sql"
	"go.uber.org/zap"
	"gorm.io/driver/mysql"
	"gorm.io/gorm"
	gormLogger "gorm.io/gorm/logger"
	"gorm.io/gorm/schema"
	"picgo/configs"
	"time"
)

type GormZapLogger struct {
	logger *zap.SugaredLogger
	gormLogger.Config
}

func (l *GormZapLogger) LogMode(level gormLogger.LogLevel) gormLogger.Interface {
	newLogger := *l
	newLogger.LogLevel = level
	return &newLogger
}

func (l *GormZapLogger) Info(ctx context.Context, msg string, data ...interface{}) {
	if l.LogLevel >= gormLogger.Info {
		l.logger.Infof(msg, data...)
	}
}

func (l *GormZapLogger) Warn(ctx context.Context, msg string, data ...interface{}) {
	if l.LogLevel >= gormLogger.Warn {
		l.logger.Warnf(msg, data...)
	}
}

func (l *GormZapLogger) Error(ctx context.Context, msg string, data ...interface{}) {
	if l.LogLevel >= gormLogger.Error {
		l.logger.Errorf(msg, data...)
	}
}

func (l *GormZapLogger) Trace(ctx context.Context, begin time.Time, fc func() (sql string, rowsAffected int64), err error) {
	if l.LogLevel <= 0 {
		return
	}

	elapsed := time.Since(begin)
	switch {
	case err != nil && l.LogLevel >= gormLogger.Error:
		sql, rows := fc()
		l.logger.Errorf("%s [%.2fms] [rows:%v] %s", err, float64(elapsed.Nanoseconds())/1e6, rows, sql)
	case elapsed > l.SlowThreshold && l.SlowThreshold != 0 && l.LogLevel >= gormLogger.Warn:
		sql, rows := fc()
		l.logger.Warnf("SLOW SQL >= %v [%.2fms] [rows:%v] %s", l.SlowThreshold, float64(elapsed.Nanoseconds())/1e6, rows, sql)
	case l.LogLevel >= gormLogger.Info:
		sql, rows := fc()
		l.logger.Infof("[%.2fms] [rows:%v] %s", float64(elapsed.Nanoseconds())/1e6, rows, sql)
	}
}

var (
	DbMysql *gorm.DB
)

// NewMysql 创建数据库连接
func NewMysql() {
	var (
		err   error
		db    *gorm.DB
		sqlDB *sql.DB
		dsn   string
	)
	// 使用 zapgorm2 创建 GORM logger

	dsn = configs.Settings.Mysql.MysqlDNS
	zapLogger := Logger
	newLogger := &GormZapLogger{
		logger: zapLogger,
		Config: gormLogger.Config{
			SlowThreshold: time.Second,
			LogLevel:      gormLogger.Info,
			Colorful:      false,
		},
	}

	if db, err = gorm.Open(mysql.Open(dsn), &gorm.Config{
		// 配置日志级别，打印出所有的sql
		//Logger: logger.Default.LogMode(logger.Info),
		Logger: newLogger,
		NamingStrategy: schema.NamingStrategy{
			//TablePrefix:   configs.Setting.TablePrefix, // 表前缀
			SingularTable: true, // 设置全局表名禁用复数
		},
	}); err != nil {
		Logger.Panicln("数据库连接失败: ", err)
	}

	if sqlDB, err = db.DB(); err != nil {
		Logger.Panicln("数据库连接失败: ", err)
	}

	// SetMaxIdleConns 设置空闲连接池中连接的最大数量
	sqlDB.SetMaxIdleConns(configs.Settings.Mysql.MaxIdleConns)
	// SetMaxOpenConns 设置打开数据库连接的最大数量。
	sqlDB.SetMaxOpenConns(configs.Settings.Mysql.MaxOpenConns)
	// SetConnMaxLifetime 设置了连接可复用的最大时间。
	sqlDB.SetConnMaxLifetime(time.Hour)
	DbMysql = db
}