package videomoderation

import (
	"service/api/consts"
	video_moderation_proto "service/api/proto/video_moderation/proto"
	video_moderation_task_proto "service/api/proto/video_moderation_task/proto"
	"service/bizcommon/util"
	"service/dbstruct"
	"service/library/logger"

	"github.com/gin-gonic/gin"
	goproto "google.golang.org/protobuf/proto"
)

func AddTasks(tasks []*dbstruct.VideoModerationTask) error {
	for _, task := range tasks {
		err := AddTask(task)
		if err != nil {
			return err
		}
	}
	return nil
}

func AddTask(task *dbstruct.VideoModerationTask) error {
	if task == nil || task.AuditedMedia == nil {
		return nil
	}
	fragmentNum := len(task.AuditedMedia.GetVideoIds())
	if fragmentNum == 0 {
		return nil
	}

	task.BatchId = goproto.String(defaultVideoModerationTaskScheduler.batchId)
	task.Status = goproto.Int64(consts.VideoModeration_Created)

	if fragmentNum == 1 {
		task.IsFragmented = goproto.Int64(0)
		task.FragmentsNum = goproto.Int64(1)

		// 写入视频审核表
		if err := prepareNotFragmentedVideoModerationTask(task); err != nil {
			return err
		}
	} else {
		task.IsFragmented = goproto.Int64(1)
		task.FragmentsNum = goproto.Int64(int64(fragmentNum))

		// 写入视频审核表
		if err := prepareFragmentedVideoModerationTask(task); err != nil {
			return err
		}
	}

	// 写入视频审核任务表
	if err := _DefaultVideoModerationTask.OpCreate(&gin.Context{}, &video_moderation_task_proto.OpCreateReq{
		VideoModerationTask: task,
	}); err != nil {
		logger.Error("Videomoderationtask OpCreate failed: %v", err)
		return err
	}

	return nil
}

// 根据任务信息，创建单个视频的视频审核，并存入数据库
func prepareFragmentedVideoModerationTask(task *dbstruct.VideoModerationTask) (err error) {
	ctx := &gin.Context{}

	fragmentsNum := task.GetFragmentsNum()
	videoModerations := make([]*dbstruct.VideoModeration, fragmentsNum)

	// 将媒体拆分为单个视频并存入视频审核表
	imageIds := task.AuditedMedia.GetVideoIds()
	for i, imageId := range imageIds {
		image := &dbstruct.MediaComponent{
			VideoIds: util.Int64Slice([]int64{imageId}),
		}
		videoModerations[i] = &dbstruct.VideoModeration{
			AuditedMedia: image,
			BatchId:      task.BatchId,
			Status:       goproto.Int64(consts.VideoModeration_Created),
		}
	}
	if err = _DefaultVideoModeration.OpCreateFragmentGroup(ctx, &video_moderation_proto.OpCreateBatchReq{
		VideoModerations: videoModerations,
		FragmentsNum:     fragmentsNum,
	}); err != nil {
		logger.Error("Videomoderation OpCreateFragmentGroup failed: %v", err)
		return
	}

	moderationFragmentIds := make([]string, fragmentsNum)
	for i, videoModeration := range videoModerations {
		moderationFragmentIds[i] = videoModeration.GetId()
	}
	task.VideoModerationFragmentIds = &moderationFragmentIds
	return
}

func prepareNotFragmentedVideoModerationTask(task *dbstruct.VideoModerationTask) (err error) {
	ctx := &gin.Context{}

	videoModeration := &dbstruct.VideoModeration{
		AuditedMedia: task.AuditedMedia,
		BatchId:      task.BatchId,
		Status:       goproto.Int64(consts.VideoModeration_Created),
	}
	if err = _DefaultVideoModeration.OpCreate(ctx, &video_moderation_proto.OpCreateReq{
		VideoModeration: videoModeration,
	}); err != nil {
		logger.Error("Videomoderation OpCreate failed: %v", err)
		return
	}

	task.VideoModerationId = videoModeration.Id
	return
}