package importer

import (
	"encoding/json"
	"os"
	"sync"
	"time"

	"git.wecise.com/wecise/cgimport/odbc"
	"github.com/wecisecode/util/mio"
	"github.com/wecisecode/util/rc"
)

type ImportStatus struct {
	LinesCount   int64
	RecordsCount int64
	RetryCount   int64
}

type CGIStatus struct {
	filepath string
	//
	TotalUseTime time.Duration
	ImportStatus map[string]*ImportStatus
	//
	mutex        sync.RWMutex
	rc           *rc.RoutinesController
	lasterror    error
	lastsavetime time.Time
	waitdone     chan any
}

func NewCGIStatus() *CGIStatus {
	return &CGIStatus{
		filepath:     mcfg.GetString("cgi.statusfile", "/opt/matrix/var/cgimport/"+odbc.Keyspace()+".status.txt"),
		ImportStatus: map[string]*ImportStatus{},
		rc:           rc.NewRoutinesController("", 1),
		waitdone:     make(chan any, 1),
	}
}

func (cgistatus *CGIStatus) Load() error {
	logger.Info("load progress from", cgistatus.filepath)
	cgistatusbs, e := mio.ReadFile(cgistatus.filepath)
	if e != nil && !os.IsNotExist(e) {
		return e
	}
	if len(cgistatusbs) > 0 {
		e = json.Unmarshal(cgistatusbs, &cgistatus)
		if e != nil {
			logger.Warn(e)
		}
	}
	return nil
}

func (cgistatus *CGIStatus) WaitSaveDone() {
	cgistatus.waitdone <- 1
	cgistatus.rc.WaitDone()
}

func (cgistatus *CGIStatus) Save() (err error) {
	cgistatus.rc.CallLast2Only(func() {
		if !cgistatus.lastsavetime.Equal(time.Time{}) {
			interval := 10 * time.Second
			realinterval := time.Since(cgistatus.lastsavetime)
			if realinterval < interval {
				t := time.NewTimer(interval - realinterval)
				select {
				case <-t.C:
				case v := <-cgistatus.waitdone:
					cgistatus.waitdone <- v
				}
			}
		}
		cgistatus.mutex.RLock()
		cgistatusbs, e := json.MarshalIndent(cgistatus, "", "  ")
		cgistatus.mutex.RUnlock()
		if e != nil {
			cgistatus.lasterror = e
			return
		}
		e = mio.WriteFile(cgistatus.filepath, cgistatusbs, true)
		if e != nil {
			cgistatus.lasterror = e
			return
		}
		cgistatus.lastsavetime = time.Now()
		// fmt.Println(cgistatus.lastsavetime)
	})
	return cgistatus.lasterror
}