package capture

import (
	"database/sql"
	"fmt"
	"log"
	"time"

	"github.com/google/uuid"
)

type OALicRecord struct {
	OA_ID                   sql.NullInt32  `json:"OA_ID"`
	OA_REQUESTID            sql.NullInt32  `json:"oa_request_id"`
	OA_REQUESTNAME          sql.NullString `json:"oa_request_name"`
	OA_REQUESTNAMENEW       sql.NullString `json:"oa_request_name_new"`
	OA_REQUESTNAMEHTMLNEW   sql.NullString `json:"oa_request_name_html_new"`
	OA_GLXMID               sql.NullString `json:"oa_glxmid"`
	OA_GLXMNAME             sql.NullString `json:"oa_glxmname"`
	OA_SQSJ                 sql.NullString `json:"oa_sqsj"`
	OA_SALESPERSONNAME      sql.NullString `json:"oa_sales_person_name"`
	OA_XSJSYX               sql.NullString `json:"oa_sales_email"`
	OA_OPERATIONSPERSONNAME sql.NullString `json:"oa_operations_person_name"`
	OA_JFJSYX               sql.NullString `json:"oa_operations_email"`
	OA_SYDW                 sql.NullString `json:"oa_using_unit"`
	OA_XMXXMS               sql.NullString `json:"oa_project_detail"`
	OA_JDS                  sql.NullInt32  `json:"oa_total_nodes"`
	OA_NODECOUNT            sql.NullInt32  `json:"oa_node_count"`
	OA_PRODUCTCODE          sql.NullString `json:"oa_product_code"`
	OA_PRODUCTNAME          sql.NullString `json:"oa_product_name"`
	OA_PRODUCTVERSION       sql.NullString `json:"oa_product_version"`
	OA_CPU                  sql.NullString `json:"oa_cpu"`
	OA_OPERATINGSYSTEM      sql.NullString `json:"oa_operating_system"`
	OA_MAINMAC              sql.NullString `json:"oa_main_mac"`
	OA_SECONDMAC            sql.NullString `json:"oa_secondary_mac"`
	OA_CREATIONDATE         sql.NullString `json:"oa_creation_date"`
	OA_CREATIONTIME         sql.NullString `json:"oa_creation_time"`
	OA_LASTOPERATEDATE      sql.NullString `json:"oa_last_operation_date"`
	OA_LASTOPERATETIME      sql.NullString `json:"oa_last_operation_time"`
	CaptureTime             sql.NullTime   `json:"capture_time"`
}

func StartCapture(sourceDB, targetDB *sql.DB) {
	InitLogs("./logs/capture", "info")

	tableName := "target_OA_license"

	// 读取上次同步时间
	lastSyncTime, err := getLastSyncTime(targetDB, tableName)
	if err != nil {
		Logger.Fatal("获取上次同步时间错误 Failed to retrieve last sync time from target DB:", err)
	}

	// 启动数据同步，每隔15分钟运行一次
	for {
		Logger.Println("Start capturing data...")
		checkTemp, err := checkSourceOaLicTime(sourceDB, lastSyncTime)
		if err != nil {
			Logger.Error("Failed to checkSourceOaLicTime:", err)
			continue
		}
		if !checkTemp {
			time.Sleep(15 * time.Second)
			continue
		}

		Logger.Println("有新数据")
		lastSyncTime1, count, err := captureData(sourceDB, targetDB, lastSyncTime)
		lastSyncTime = lastSyncTime1
		if err != nil {
			Logger.Error("抓取源数据错误 Failed to capture data:", err)
		}

		if err := insertSyncMetadata(targetDB, tableName, lastSyncTime); err != nil {
			Logger.Error("插入同步时间表错误 Failed to insert sync metadata into target DB:", err)
		}
		Logger.Println("插入时间: ", lastSyncTime)
		if count > 0 {
			//lic关联用户表
			err := insertLicToUser(count, targetDB)
			if err != nil {
				Logger.Error("关联用户表错误 Failed to insertLicToUser:", err)
			}
		}
		time.Sleep(15 * time.Second)
	}
}

func insertLicToUser(count int, targetDB *sql.DB) error {
	//查询抓取表中最新的count条数据
	query := "SELECT UNIQUE_ID,OA_SALESPERSONNAME, OA_OPERATIONSPERSONNAME FROM target_OA_license ORDER BY capture_time DESC LIMIT ?"

	rows, err := targetDB.Query(query, count)
	if err != nil {
		Logger.Println("查询源库最新数据错误 Failed to execute query on source DB:", err)
		return err
	}
	defer rows.Close()
	Logger.Println("查询到最新的count条数据 ", count)
	for rows.Next() {
		var licUniqueID, salesPersonName, operationsPersonName sql.NullString
		err := rows.Scan(&licUniqueID, &salesPersonName, &operationsPersonName)
		if err != nil {
			Logger.Error("插入到目标库错误 insertLicToUser find newdata Failed to scan row:", err)
			continue
		}

		if salesPersonName.Valid || operationsPersonName.Valid != false {
			//将获取到的字段，和用户表关联对比
			var userUNIQUEID, userACCOUNT sql.NullString
			queryLIC_USER := `SELECT UNIQUEID, ACCOUNT  FROM LIC_USER where 
				(USERNAME = ?  OR USERNAME = ? )
				and (role = 'ADMIN'  OR  role = 'supportRole' OR  role = 'salesRole');`
			err = targetDB.QueryRow(queryLIC_USER, salesPersonName, operationsPersonName).Scan(&userUNIQUEID, &userACCOUNT)
			if err == sql.ErrNoRows {
				Logger.Warn("No rows were returned")
				continue
			}
			if err != nil {
				Logger.Error("find user name Failed to scan row :", err)
				continue
			}

			//fmt.Println("关联到用户 ", userUNIQUEID, userACCOUNT)
			insertQuery := "INSERT  INTO LICENSERECORDTOUSER(LICENSE_UNIQUEID,USER_UNIQUEID,USER_ACCOUNT,OPERATOR_UNIQUEID,UP_TIME) VALUES(?,?,?,'SYSTEM_AUTO',?)"
			_, err = targetDB.Exec(insertQuery,
				licUniqueID,
				userUNIQUEID,
				userACCOUNT,
				time.Now(),
			)

			if err != nil {
				Logger.Error("lic关联到目标库用户错误 Failed to sql2 insert record into target DB:", err)
			}
		}

	}

	return nil
}

// CaptureOnce 主动触发一次数据抓取
func CaptureOnce(sourceDB, targetDB *sql.DB) error {
	tableName := "target_OA_license"

	// 读取上次同步时间
	lastSyncTime, err := getLastSyncTime(targetDB, tableName)
	if err != nil {
		Logger.Error("Failed to retrieve last sync time from target DB:", err)
		return err
	}

	// 执行一次数据抓取
	lastSyncTime, count, err := captureData(sourceDB, targetDB, lastSyncTime)
	if err != nil {
		Logger.Error("Failed to capture data:", err)
		return err
	}
	if err := insertSyncMetadata(targetDB, tableName, lastSyncTime); err != nil {
		Logger.Error("Failed to insert sync metadata into target DB:", err)
		return err
	}
	Logger.Println("Captured", count, "records.")

	if count > 0 {
		//lic关联用户表
		err := insertLicToUser(count, targetDB)
		if err != nil {
			Logger.Error("insertLicToUser Failed to insert record into target DB:", err)
			return err
		}
	}
	return nil
}

// getLastSyncTime 从数据库中获取指定表的上次同步时间
func getLastSyncTime(db *sql.DB, tableName string) (time.Time, error) {
	var lastSyncTime time.Time
	query := `
		SELECT last_sync_time 
		FROM sync_metadata 
		WHERE table_name = ? 
		ORDER BY last_sync_time DESC 
		LIMIT 1
	`
	err := db.QueryRow(query, tableName).Scan(&lastSyncTime)
	if err != nil {
		return time.Time{}, err
	}
	return lastSyncTime, nil
}

// insertSyncMetadata 插入新的同步元数据
func insertSyncMetadata(db *sql.DB, tableName string, lastSyncTime time.Time) error {
	query := `
		INSERT INTO sync_metadata (table_name, last_sync_time)
		VALUES (?, ?)
	`
	_, err := db.Exec(query, tableName, lastSyncTime)
	return err
}

func checkSourceOaLicTime(sourceDB *sql.DB, lastSyncTime time.Time) (bool, error) {
	var checkCount int
	checkTime := `SELECT count(1) FROM XUGU.WORKFLOW_REQUESTBASE WR 
where
TO_TIMESTAMP(wr.CREATEDATE || ' ' || wr.CREATETIME, 'YYYY-MM-DD HH24:MI:SS') > TO_TIMESTAMP(?, 'YYYY-MM-DD HH24:MI:SS');`
	error := sourceDB.QueryRow(checkTime, lastSyncTime).Scan(&checkCount)
	if error != nil {
		Logger.Println("Failed to check count:", error)
		return false, error
	}
	if checkCount == 0 {
		Logger.Println("没有新数据需要同步")
		return false, nil
	}
	return true, nil
}

// captureData 执行数据抓取和同步
func captureData(sourceDB, targetDB *sql.DB, lastSyncTime time.Time) (time.Time, int, error) {

	query := `
	SELECT
		fmd.id ,
		fm.REQUESTID, 
		wr.REQUESTNAME, 
		wr.REQUESTNAMENEW, 
		wr.REQUESTNAMEHTMLNEW, 
		fm.glxm,
    	PP.NAME,
		fm.SQSJ, 
		hrm1.LASTNAME, 
		hrm2.LASTNAME, 
		fm.XSJSYX, 
		fm.JFJSYX, 
		fm.SYDW, 
		fm.XMXXMS, 
		fm.JDS, 
		fmd.JDS, 
		ws1.SELECTVALUE, 
		ws1.SELECTNAME, 
		ws2.SELECTNAME, 
		fmd.CLQ, 
		fmd.CZXT, 
		fmd.IP, 
		fmd.MAC,
		wr.CREATEDATE, 
		wr.CREATETIME, 
		wr.LASTOPERATEDATE, 
		wr.LASTOPERATETIME 
	FROM XUGU.formtable_main_146 fm
	LEFT JOIN XUGU.HRMRESOURCE hrm1 ON TO_NUMBER(fm.XSRY) = hrm1.id 
	LEFT JOIN XUGU.HRMRESOURCE hrm2 ON TO_NUMBER(fm.jfry) = hrm2.id
	LEFT JOIN XUGU.FORMTABLE_MAIN_146_dt1 fmd ON fmd.mainid = fm.id 
	LEFT JOIN XUGU.WORKFLOW_SELECTITEM ws1 ON fmd.cpmc = ws1.SELECTVALUE AND ws1.FIELDID = 14627
	LEFT JOIN XUGU.WORKFLOW_SELECTITEM ws2 ON fmd.BB = ws2.SELECTVALUE AND ws2.FIELDID = 14628
	LEFT JOIN XUGU.WORKFLOW_REQUESTBASE WR ON fm.REQUESTID = WR.REQUESTID 
	LEFT JOIN XUGU.PRJ_PROJECTINFO PP ON fm.glxm = PP.ID 
	WHERE TO_TIMESTAMP(wr.CREATEDATE || ' ' || wr.CREATETIME, 'YYYY-MM-DD HH24:MI:SS') > TO_TIMESTAMP(?, 'YYYY-MM-DD HH24:MI:SS')
	ORDER BY wr.CREATEDATE DESC, wr.CREATETIME DESC 
	PARALLEL 8`

	var count int
	rows, err := sourceDB.Query(query, lastSyncTime.Format("2006-01-02 15:04:05"))
	if err != nil {
		Logger.Println("Failed to execute query on source DB:", err)
		return lastSyncTime, 0, err
	}
	defer rows.Close()

	var newSyncTime time.Time
	firstRecord := true
	for rows.Next() {
		var record OALicRecord
		count++
		if err := rows.Scan(
			&record.OA_ID,
			&record.OA_REQUESTID,
			&record.OA_REQUESTNAME,
			&record.OA_REQUESTNAMENEW,
			&record.OA_REQUESTNAMEHTMLNEW,
			&record.OA_GLXMID,
			&record.OA_GLXMNAME,
			&record.OA_SQSJ,
			&record.OA_SALESPERSONNAME,
			&record.OA_OPERATIONSPERSONNAME,
			&record.OA_XSJSYX,
			&record.OA_JFJSYX,
			&record.OA_SYDW,
			&record.OA_XMXXMS,
			&record.OA_JDS,
			&record.OA_NODECOUNT,
			&record.OA_PRODUCTCODE,
			&record.OA_PRODUCTNAME,
			&record.OA_PRODUCTVERSION,
			&record.OA_CPU,
			&record.OA_OPERATINGSYSTEM,
			&record.OA_MAINMAC,
			&record.OA_SECONDMAC,
			&record.OA_CREATIONDATE,
			&record.OA_CREATIONTIME,
			&record.OA_LASTOPERATEDATE,
			&record.OA_LASTOPERATETIME,
		); err != nil {
			log.Println("Failed to scan row from source DB:", err)
			return lastSyncTime, 0, err
		}

		record.CaptureTime = sql.NullTime{
			Time:  time.Now(),
			Valid: true,
		}

		// 插入新数据到目标数据库
		err := insertOALicRecordIntoTargetDB(targetDB, record)
		if err != nil {
			Logger.Println("Failed to insert record into target DB:", err)
			return lastSyncTime, 0, err
		}
		//fmt.Printf("Inserted record with OA_REQUESTID %d into target DB.\n", record.OA_REQUESTID.Int32)

		// 在第一次迭代时更新 newSyncTime 为当前记录的创建时间
		if firstRecord && record.OA_CREATIONDATE.Valid && record.OA_CREATIONTIME.Valid {
			crDate, _ := time.Parse("2006-01-02", record.OA_CREATIONDATE.String)
			crTime, _ := time.Parse("15:04:05", record.OA_CREATIONTIME.String)
			newSyncTime = time.Date(crDate.Year(), crDate.Month(), crDate.Day(), crTime.Hour(), crTime.Minute(), crTime.Second(), 0, time.Local)
			firstRecord = false
		}
	}

	// 如果有新数据同步，则更新 lastSyncTime
	if !newSyncTime.IsZero() {
		lastSyncTime = newSyncTime
	}

	return lastSyncTime, count, err
}

// insertOALicRecordIntoTargetDB 插入新记录到目标数据库
func insertOALicRecordIntoTargetDB(targetDB *sql.DB, record OALicRecord) error {
	//fmt.Println("插入新记录到目标数据库")
	tx, err := targetDB.Begin()
	if err != nil {
		return fmt.Errorf("begin transaction: %v", err)
	}

	defer func() {
		if err != nil {
			tx.Rollback()
		} else {
			err = tx.Commit()
		}
	}()
	uniqueID := uuid.New()

	sql1 := `
	INSERT INTO target_OA_license (
		Unique_ID,
		OA_ID,
		OA_REQUESTID, 
		OA_REQUESTNAME, 
		OA_REQUESTNAMENEW, 
		OA_REQUESTNAMEHTMLNEW, 
		OA_GLXMID,
		OA_GLXMNAME,
		OA_SQSJ, 
		OA_SALESPERSONNAME, 
		OA_XSJSYX, 
		OA_OPERATIONSPERSONNAME, 
		OA_JFJSYX, 
		OA_SYDW, 
		OA_XMXXMS, 
		OA_JDS, 
		OA_NODECOUNT, 
		OA_PRODUCTCODE, 
		OA_PRODUCTNAME, 
		OA_PRODUCTVERSION, 
		OA_CPU, 
		OA_OPERATINGSYSTEM, 
		OA_MAINMAC, 
		OA_SECONDMAC,
		OA_CREATIONDATE, 
		OA_CREATIONTIME, 
		OA_LASTOPERATEDATE, 
		OA_LASTOPERATETIME,
		capture_Time
	) VALUES (?,?,?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?,?,? ,?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?,?, ?)`

	_, err = tx.Exec(sql1,
		uniqueID,
		record.OA_ID,
		record.OA_REQUESTID,
		record.OA_REQUESTNAME,
		record.OA_REQUESTNAMENEW,
		record.OA_REQUESTNAMEHTMLNEW,
		record.OA_GLXMID,
		record.OA_GLXMNAME,
		record.OA_SQSJ,
		record.OA_SALESPERSONNAME,
		record.OA_XSJSYX,
		record.OA_OPERATIONSPERSONNAME,
		record.OA_JFJSYX,
		record.OA_SYDW,
		record.OA_XMXXMS,
		record.OA_JDS,
		record.OA_NODECOUNT,
		record.OA_PRODUCTCODE,
		record.OA_PRODUCTNAME,
		record.OA_PRODUCTVERSION,
		record.OA_CPU,
		record.OA_OPERATINGSYSTEM,
		record.OA_MAINMAC,
		record.OA_SECONDMAC,
		record.OA_CREATIONDATE,
		record.OA_CREATIONTIME,
		record.OA_LASTOPERATEDATE,
		record.OA_LASTOPERATETIME,
		record.CaptureTime,
	)

	if err != nil {
		log.Println("Failed to sql1 insert record into target DB:", err)
	}

	sql2 := `
	INSERT INTO License_generate_Info (
	License_UniqueID,
	OA_ID,
	License_Flage)
	VALUES (?, ?,?)
	`
	_, err = tx.Exec(sql2,
		uniqueID,
		record.OA_ID,
		"未生成",
	)

	if err != nil {
		Logger.Println("Failed to sql2 insert record into target DB:", err)
		return err
	}

	return nil
}