package intimate

import (
	"database/sql"
	"errors"
	"log"

	_ "github.com/go-sql-driver/mysql"
)

// OperatorFlag 标志
type OperatorFlag int32

const (
	// OperatorOK 等待被处理
	OperatorOK OperatorFlag = 100
	// OperatorWait 等待被处理
	OperatorWait OperatorFlag = 1000
	// OperatorError 错误标志
	OperatorError OperatorFlag = 10000
)

// SourceStore 储存
type SourceStore struct {
	table      string
	db         *sql.DB
	errorCount int
	errorLimit int
}

// NewSourceStore 创建一个存储实例
func NewSourceStore(table string) *SourceStore {
	db, err := sql.Open("mysql", InitConfig.Database.SourceURI)
	if err != nil {
		panic(err)
	}
	return &SourceStore{table: table, db: db}
}

func (store *SourceStore) errorAlarm(err error) {
	if err != nil {
		log.Println("store error: ", err)
		// 报警. 如果数据插入有问题
		store.errorCount++
		if store.errorCount >= store.errorLimit {
			// 数据库频繁操作初问题 报警, 减少没意义的请求
		}
	} else {
		if store.errorCount > 0 {
			store.errorCount--
		}
	}
}

// Insert 插入数据
func (store *SourceStore) Insert(isource IGetSource) {
	_, err := store.db.Exec("insert into "+store.table+"(url, target_type, source,  ext, operator, error_msg) values(?,?,?,?,?,?)", isource.GetUrl(), isource.GetTargetType(), isource.GetSource(), isource.GetExt(), isource.GetOperator(), isource.GetErrorMsg())
	store.errorAlarm(err)
}

// Update 更新数据
func (store *SourceStore) Update(isource IUpdateSource) {
	_, err := store.db.Exec("update "+store.table+" set  ext = ?, pass_gob = ?, operator = ?, error_msg = ? where uid = ?", isource.GetExt(), isource.GetPassGob(), isource.GetOperator(), isource.GetErrorMsg(), isource.GetUid())
	store.errorAlarm(err)
}

// UpdateError 更新错误数据
func (store *SourceStore) UpdateError(isource IUpdateSource, err error) {
	isource.SetOperator(int32(OperatorError))
	isource.SetErrorMsg(sql.NullString{String: err.Error(), Valid: true})
	_, dberr := store.db.Exec("update "+store.table+" set  operator = ?, error_msg = ? where uid = ?", isource.GetOperator(), isource.GetErrorMsg(), isource.GetUid())
	store.errorAlarm(dberr)
}

// Restore 恢复Operator数据状态
func (store *SourceStore) Restore(isource IUpdateSource) {
	_, err := store.db.Exec("update "+store.table+" set  operator = ?  where uid = ?", isource.GetLastOperator(), isource.GetUid())
	store.errorAlarm(err)
}

// Pop 弹出一条未处理的数据
func (store *SourceStore) Pop(targetType string, operators ...int32) (IUpdateSource, error) {

	tx, err := store.db.Begin()
	if err != nil {
		log.Println(err, targetType)
		return nil, err
	}
	var args = []interface{}{targetType}
	selectSQL := `select uid, url, target_type, source, ext, operator, update_time from ` + store.table + ` where target_type = ?`
	if len(operators) == 0 {
		selectSQL += " and operator = ?"
		args = append(args, 0)
	} else {
		for _, operator := range operators {
			selectSQL += " and operator = ?"
			args = append(args, operator)
		}
	}

	// log.Println(selectSQL + ` limit 1 for update`)
	row := tx.QueryRow(selectSQL+` limit 1 for update`, args...)

	defer func() {
		err := tx.Commit()
		if err != nil {
			log.Println(err)
			err = tx.Rollback()
			if err != nil {
				log.Println(err)
			}
		}
	}()

	if row != nil {
		s := &Source{}

		// uid, url, target_type, source, ext, operator
		err = row.Scan(&s.Uid, &s.Url, &s.TargetType, &s.Source, &s.Ext, &s.Operator, &s.UpdateTime)
		s.SetLastOperator(s.Operator)

		if err != nil {
			log.Println(err, targetType)
			_, err = tx.Exec("update "+store.table+" set error_msg = ?, operator = ? where uid = ?", err.Error(), OperatorError, s.Uid)
			if err != nil {
				log.Println(err)
			}
			return nil, err
		}
		_, err = tx.Exec("update "+store.table+" set operator = ? where uid = ?", OperatorWait, s.Uid)
		return s, nil
	}

	return nil, errors.New("TaskQueue is nil")
}

// AnchorTable 主播表名称
const AnchorTable string = "anchor_info"

// CollectLogTable 采集日志表
const CollectLogTable string = "collect_log"

type ExtractorStore struct {
	db *sql.DB

	errorCount int
	errorLimit int
}

func (store *ExtractorStore) errorAlarm(err error) {
	if err != nil {
		log.Panic("store error: ", err)
		// 报警. 如果数据插入有问题
		store.errorCount++
		if store.errorCount >= store.errorLimit {
			// 数据库频繁操作初问题 报警, 减少没意义的请求
		}
	} else {
		if store.errorCount > 0 {
			store.errorCount--
		}
	}
}

func NewExtractorStore() *ExtractorStore {
	db, err := sql.Open("mysql", InitConfig.Database.ExtractorURI)
	if err != nil {
		panic(err)
	}
	return &ExtractorStore{db: db}
}

/*
  `uid`           bigint,
  `platform`      varchar(255) NOT NULL,
  `anchor_id`     varchar(255) NOT NULL,
  `anchor_name`   varchar(255) NOT NULL,
  `live_url`      text,
  `channel`       varchar(128) DEFAULT NULL,
  `show_type`     varchar(255) DEFAULT NULL,
*/

// InsertAnchorInfo AnchorInfo表, 插入数据
func (store *ExtractorStore) InsertAnchorInfo(isource IGetAnchorInfo) {
	_, err := store.db.Exec("insert  into "+AnchorTable+"(platform, anchor_id, anchor_name,  live_url, channel, show_type, ext) values(?,?,?,?,?,?,?) ON DUPLICATE KEY UPDATE", isource.GetPlatform(), isource.GetAnchorId(), isource.GetAnchorName(), isource.GetLiveUrl(), isource.GetChannel(), isource.GetShowType(), isource.GetExt())
	store.errorAlarm(err)
}

/*
	  `uid`      bigint,
  `platform` varchar(255) NOT NULL,
  `anchor_id` varchar(255) NOT NULL,

  `is_showing` tinyint(1) DEFAULT NULL,
  `is_error` tinyint(1) DEFAULT NULL,

  `followers` int(11) DEFAULT NULL,
  `views` int(11) DEFAULT NULL,
  `giver` json DEFAULT NULL,
  `gratuity` int(11) DEFAULT NULL,

  `show_title` text DEFAULT NULL,
  `show_start_time` timestamp NULL DEFAULT NULL,
  `show_end_time` timestamp NULL DEFAULT NULL,
  `update_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, --时间戳从源数据里获取
  `ext` json DEFAULT NULL,

  `error_msg` text DEFAULT NULL,
*/

// InsertCollectLog CollectLog表插入数据
func (store *ExtractorStore) InsertCollectLog(isource IGetCollectLog) {
	_, err := store.db.Exec("insert  into "+CollectLogTable+"(uid, platform, anchor_id,  is_showing, is_error, followers, views, giver, gratuity, show_title, show_start_time, show_end_time, update_time, ext, error_msg) values(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)",
		isource.GetUid(), isource.GetPlatform(), isource.GetAnchorId(), isource.GetIsShowing(), isource.GetIsError(), isource.GetFollowers(), isource.GetViews(), isource.GetGiver(), isource.GetGratuity(), isource.GetShowTitle(), isource.GetShowStartTime(), isource.GetShowEndTime(), isource.GetUpdateTime(), isource.GetExt(), isource.GetErrorMsg(),
	)
	store.errorAlarm(err)
}