package bo

import (
	"encoding/json"
	"errors"
	"fmt"
	"io/fs"
	"io/ioutil"
	"log"
	"os"
	"os/exec"
	"path/filepath"
	"runtime"
	"scd_check_tools/conf"
	"scd_check_tools/logger"
	"scd_check_tools/models/enum"
	"scd_check_tools/tools"
	"strconv"
	"strings"
	"time"

	"github.com/astaxie/beego/orm"
)

//数据备份还原模型
type Global_backup struct {
	Id            int `orm:"pk"`
	Backtype      string
	Backdate      string
	Backstaff     string
	Backfilepath  string
	Datastartdate string
	Dataenddate   string
	Backfilesize  int64
	State         int
}

//数据备份还原管理对象
type GlobalBackupMgr struct {
	Model Global_backup
	DeviceBaseModel
}

func init() {
	orm.RegisterModel(new(Global_backup))
}

//将数据还原到指定备份
func (c *GlobalBackupMgr) Recover(backid int) (err error) {
	dblog := new(SystemLog)
	dblog.SetUserInfo(c.GetUserInfo())
	dblog.Audittype = enum.AuditType_admin_dbbackorrecorvey
	dblog.Logtype = enum.LogType_Execute
	dblog.Eventtype = enum.OptEventType_Bus
	dblog.Eventlevel = enum.OptEventLevel_Mid
	db := orm.NewOrm()
	c.Model.Id = backid
	err = db.Read(&c.Model)
	if err != nil {
		logger.Logger.Error(err)
		return err
	}
	dbcfg, err := c.readDbCnf()
	if err != nil {
		logger.Logger.Error(err)
		return err
	}
	dir, _ := filepath.Abs(filepath.Dir(os.Args[0]))
	if dir == "" {
		return nil
	}
	go func() {
		if string(runtime.GOOS) == "windows" {
			err = c.executiveCommand(dir+string(os.PathSeparator)+`db_restore.bat`, []string{
				dbcfg["host"],
				dbcfg["port"],
				dbcfg["user"],
				dbcfg["pwd"],
				dbcfg["dbname"],
				dir + string(os.PathSeparator) + c.Model.Backfilepath,
			},
			)
		} else {
			err = c.executiveCommand(dir+string(os.PathSeparator)+`db_restore.sh`, []string{
				dbcfg["host"],
				dbcfg["port"],
				dbcfg["user"],
				dbcfg["pwd"],
				dbcfg["dbname"],
				dbcfg["dbname"],
				dir + string(os.PathSeparator) + c.Model.Backfilepath,
			},
			)
		}
		if err != nil {
			logger.Logger.Error(err)
			return
		}
		if err != nil {
			logger.Logger.Error(err)
			dblog.Description = fmt.Sprintf("数据还原失败：%s,操作数据：%+v", err.Error(), c.Model)
			dblog.Fail2()
		} else {
			dblog.Description = fmt.Sprintf("数据还原成功,操作数据：%+v", c.Model)
			dblog.Success2()
		}
	}()
	return err
}

//新的备份
func (c *GlobalBackupMgr) Save() (err error) {
	dblog := new(SystemLog)
	dblog.SetUserInfo(map[string]interface{}{"name": "", "ip": "127.0.0.1"})
	dblog.Audittype = enum.AuditType_admin_dbbackorrecorvey
	dblog.Logtype = enum.LogType_Insert
	dblog.Eventtype = enum.OptEventType_Bus
	dblog.Eventlevel = enum.OptEventLevel_Hight
	//生成数据库备份
	now := time.Now().Format("20060102150405")
	bpath := strings.Join([]string{"static", "backup", "db"}, string(os.PathSeparator))
	os.MkdirAll(bpath, fs.ModePerm)
	c.Model.Backfilepath = bpath + string(os.PathSeparator) + now + ".sql"
	c.Model.Backstaff = c.GetUserName()
	c.Model.Backdate = tools.NowTime()
	c.Model.Backtype = "db"
	c.Model.Datastartdate = "1970-01-01 00:00:00"
	c.Model.Dataenddate = tools.NowTime()
	dbcfg, err := c.readDbCnf()
	if err != nil {
		logger.Logger.Error(err)
		return err
	}
	dir, _ := filepath.Abs(filepath.Dir(os.Args[0]))
	if dir == "" {
		return nil
	}
	c.Model.State = 1
	db := orm.NewOrm()
	newid, err := db.Insert(&c.Model)
	if err != nil {
		logger.Logger.Error(err)
		return nil
	}
	go func() {
		o := orm.NewOrm()
		if string(runtime.GOOS) == "windows" {
			err = c.executiveCommand(dir+string(os.PathSeparator)+`db_backup.bat`, []string{
				dbcfg["host"],
				dbcfg["port"],
				dbcfg["user"],
				dbcfg["pwd"],
				dbcfg["dbname"],
				dir + string(os.PathSeparator) + c.Model.Backfilepath,
			},
			)
		} else {
			err = c.executiveCommand(dir+string(os.PathSeparator)+`db_backup.sh`, []string{
				dbcfg["host"],
				dbcfg["port"],
				dbcfg["user"],
				dbcfg["pwd"],
				dbcfg["dbname"],
				dbcfg["dbname"],
				dir + string(os.PathSeparator) + c.Model.Backfilepath,
			})
		}
		if err != nil {
			logger.Logger.Error(err)
			return
		}
		f, err := os.Stat(c.Model.Backfilepath)
		if err != nil && os.IsNotExist(err) {
			logger.Logger.Error(err)
			return
		}
		c.Model.State = 2
		c.Model.Id = int(newid)
		c.Model.Backfilesize = f.Size()
		_, err = o.Update(&c.Model)
		if err != nil {
			logger.Logger.Error(err)
			dblog.Description = fmt.Sprintf("备份数据失败：%s,操作数据：%+v", err.Error(), c.Model)
			dblog.Fail2()
		} else {
			dblog.Description = fmt.Sprintf("备份数据成功,操作数据：%+v", c.Model)
			dblog.Success2()
		}
	}()
	return err
}

func (c *GlobalBackupMgr) One() (Global_backup, error) {
	o := orm.NewOrm()
	err := o.Read(&c.Model)
	if err != nil {
		log.Println(err)
	}
	return c.Model, err
}

func (c *GlobalBackupMgr) Delete() (err error) {
	dblog := new(SystemLog)
	dblog.SetUserInfo(c.GetUserInfo())
	dblog.Audittype = enum.AuditType_admin_dbbackorrecorvey
	dblog.Logtype = enum.LogType_Delete
	dblog.Eventtype = enum.OptEventType_Bus
	dblog.Eventlevel = enum.OptEventLevel_Hight
	db := orm.NewOrm()
	if c.Model.Id == 0 {
		return errors.New("无效的ID")
	} else {
		db.Read(&c.Model)
		_, err = db.Delete(&c.Model)
	}
	if err != nil {
		logger.Logger.Error(err)
		dblog.Description = fmt.Sprintf("删除数据备份%s失败：%s", c.Model.Backdate, err.Error())
		dblog.Fail2()
	} else {
		ferr := os.Remove("." + string(os.PathSeparator) + c.Model.Backfilepath)
		if ferr != nil {
			logger.Logger.Error(ferr, c.Model.Backfilepath)
		}
		dblog.Description = fmt.Sprintf("删除数据备份%s成功", c.Model.Backdate)
		dblog.Success2()
	}
	return err
}

func (c *GlobalBackupMgr) List(param map[string]string, pageno, pagesize int) ([]orm.Params, int, error) {
	dblog := new(SystemLog)
	dblog.SetUserInfo(c.GetUserInfo())
	dblog.Audittype = enum.AuditType_Notice
	dblog.Logtype = enum.LogType_Query
	dblog.Eventtype = enum.OptEventType_Bus
	dblog.Eventlevel = enum.OptEventLevel_Hight
	o := orm.NewOrm()
	sqlParamters := []interface{}{}
	sql := "select t.* from global_backup t where t.backtype='db' "

	if v, h := param["backstaff"]; h {
		sql += " and t.backstaff like ?"
		sqlParamters = append(sqlParamters, "%"+fmt.Sprintf("%s", v)+"%")
	}
	if v, h := param["backdate"]; h {
		ds := strings.Split(tools.IsEmpty(v), ",")
		sql += " and t.backdate BETWEEN ? and ?"
		sqlParamters = append(sqlParamters, ds[0])
		sqlParamters = append(sqlParamters, ds[1])
	}

	limit := fmt.Sprintf(" order by t.backdate desc limit %d,%d", (pageno-1)*pagesize, pagesize)
	r := []orm.Params{}
	_, err := o.Raw(sql+limit, sqlParamters).Values(&r)
	dblog.Description = fmt.Sprintf("SQL：%s 参数：%+v", sql+limit, sqlParamters)
	if err != nil {
		logger.Logger.Error(err, dblog.Description)
		dblog.Fail2()
		return nil, 0, err
	}
	dblog.Success2()
	total := []orm.Params{}
	_, err = o.Raw(strings.Replace(sql, "t.*", "count(1) cnt", 1), sqlParamters).Values(&total)
	if err != nil {
		log.Println(err)
		return nil, 0, err
	}
	totalCnt := 0
	if len(total) > 0 {
		totalCnt, _ = strconv.Atoi(tools.IsEmpty(total[0]["cnt"]))
	}
	return r, totalCnt, err
}

func (c *GlobalBackupMgr) readDbCnf() (map[string]string, error) {
	rummode := conf.GlobalConfig["runmode"]
	fileHanlder, err := os.Open("./conf/mysql-" + rummode + ".cnf")
	if err != nil {
		return nil, err
	}
	txt, _ := ioutil.ReadAll(fileHanlder)
	fileHanlder.Close()
	txtStr := string(txt)
	if txtStr == "" {
		return nil, errors.New("配置文件格式不正确，请正确配置")
	}
	cfgdata := map[string]string{}
	err = json.Unmarshal(txt, &cfgdata)
	if err != nil {
		return nil, err
	}
	return cfgdata, nil
}
func (c *GlobalBackupMgr) executiveCommand(command string, paras []string) error {
	//需要执行命令:command
	var cmd *exec.Cmd
	if string(runtime.GOOS) == "windows" {
		cmd = exec.Command(command, paras...)
	} else {
		cmd = exec.Command("sh", "-c", command)
	}
	logger.Logger.Debug(fmt.Sprintf("正在进行数据备份，命令：%s 参数:%s", command, paras))
	// 获取管道输入
	output, err := cmd.StdoutPipe()
	if err != nil {
		return err
	}
	if err := cmd.Start(); err != nil {
		return err
	}
	logtxt, err := ioutil.ReadAll(output)
	if err != nil {
		return err
	}
	if err := cmd.Wait(); err != nil {
		return err
	}
	logger.Logger.Debug(string(logtxt))
	return nil
}