package imeiqueue

import (
	"context"
	"fmt"
	"time"

	"git.5iot.com/iotlcm-public/iotlcm-admin-svr/internal/consts"
	"git.5iot.com/iotlcm-public/iotlcm-admin-svr/internal/library/rabbitmq"
	"git.5iot.com/iotlcm-public/iotlcm-admin-svr/internal/model"
	"git.5iot.com/iotlcm-public/iotlcm-admin-svr/internal/service"
	"git.5iot.com/iotlcm-public/iotlcm-admin-svr/utility/uuid32"

	"github.com/gogf/gf/v2/errors/gerror"
	"github.com/gogf/gf/v2/frame/g"
)

const fullSyncOperation = "imei_full_sync"

type sImeiQueue struct{}

var (
	imeiNow           = time.Now
	imeiRunID         = uuid32.S
	imeiRabbitEnabled = rabbitmq.Enabled
	imeiPublish       = rabbitmq.Publish
)

func init() { service.RegisterImeiQueue(New()) }

func New() *sImeiQueue { return &sImeiQueue{} }

func (s *sImeiQueue) StartImeiRun(ctx context.Context) (string, error) {
	return s.StartImeiRunScoped(ctx, nil)
}

// StartImeiRunScoped starts an IMEI run restricted to scope.Channels. A nil
// scope, or one whose channels normalize to empty, starts a full sync.
//
// The runId prefix keeps IMEI runs distinguishable from status runs in logs and
// in the Redis key space (each chain has its own prefix anyway).
func (s *sImeiQueue) StartImeiRunScoped(ctx context.Context, scope *model.SyncScope) (string, error) {
	if ctx == nil {
		ctx = context.Background()
	}
	normalized, err := model.NormalizeScope(scope)
	if err != nil {
		return "", err
	}
	if !imeiRabbitEnabled(ctx) {
		return "", gerror.New("imei queue start skipped: rabbitmq is disabled")
	}
	now := imeiNow()
	message := model.ImeiQueueStartMessage{
		RunID:       fmt.Sprintf("imei-%s-%s", now.Format("20060102150405"), imeiRunID()),
		Operation:   fullSyncOperation,
		TriggeredAt: now.Format(time.RFC3339),
		Scope:       normalized,
	}
	if err := imeiPublish(ctx, consts.QueueImeiQueueStart, message); err != nil {
		return "", gerror.Wrap(err, "publish imei queue start")
	}
	g.Log().Infof(ctx, "event=imei_queue_trigger status=published runId=%s scopeChannels=%d", message.RunID, normalized.ChannelCount())
	return message.RunID, nil
}