package models

import (
	"github.com/go-xorm/xorm"
	"fmt"
	"github.com/ouqiang/cron-scheduler/modules/setting"
	"github.com/go-xorm/core"
	_ "github.com/go-sql-driver/mysql"
	"gopkg.in/macaron.v1"
	"strings"
)

type Status int8
type CommonMap map[string]interface{}

var Db *xorm.Engine

const (
	Disabled Status = 0   // 禁用
	Failure Status  = 0   // 失败
	Enabled Status  = 1   // 启用
	Running Status  = 1   // 运行中
	Finish Status   = 2   // 完成
)

const (
	Page = 1            // 当前页数
	PageSize = 20       // 每页多少条数据
	MaxPageSize = 100000  // 每次最多取多少条
)

// 创建Db
func CreateDb(configFile string) *xorm.Engine{
	config := getDbConfig(configFile)
	dsn := getDbEngineDSN(config["engine"], config)
	engine, err := xorm.NewEngine(config["engine"], dsn)
	if err != nil {
		panic(err)
	}
	if config["prefix"] != "" {
		// 设置表前缀
		mapper := core.NewPrefixMapper(core.SnakeMapper{}, config["prefix"])
		engine.SetTableMapper(mapper)
	}
	// 本地环境开始日志
	if macaron.Env == macaron.DEV {
		engine.ShowSQL(true)
		engine.Logger().SetLevel(core.LOG_DEBUG)
	}

	return engine
}

// 获取数据库引擎DSN  mysql,sqlite
func getDbEngineDSN(engine string, config map[string]string) string {
	engine = strings.ToLower(engine)
	var dsn string = ""
	switch engine {
		case "mysql":
			dsn = fmt.Sprintf("%s:%s@tcp(%s:%s)/%s?charset=%s",
				config["user"],
				config["password"],
				config["host"],
				config["port"],
				config["database"],
				config["charset"])
	}

	return dsn
}

// 获取数据库配置
func getDbConfig(configFile string) (map[string]string){
	config,err := setting.Read(configFile)
	if err != nil {
		panic(err)
	}
	section := config.Section("db")
	if err != nil {
		panic(err)
	}
	var db map[string]string = make(map[string]string)
	db["user"] = section.Key("user").String()
	db["password"] = section.Key("password").String()
	db["host"] = section.Key("host").String()
	db["port"] = section.Key("port").String()
	db["database"] = section.Key("database").String()
	db["charset"] = section.Key("charset").String()
	db["prefix"] = section.Key("prefix").String()
	db["engine"] = section.Key("engine").String()

	return db
}