package imageaudit

import (
	"fmt"
	"service/bizcommon/util"
	"service/dbstruct"
	"service/library/logger"
	"service/library/mediafiller"

	"github.com/gin-gonic/gin"
)

// 批次图像审核任务控制块
type ImageAuditTaskBatchControlBlock struct {
	BatchId          string                        // 批次号
	TaskCtrlBlocks   []*ImageAuditTaskControlBlock // 任务控制块
	Images           []*dbstruct.MediaComponent    // 送审图像序列
	ImageAuditIds    []string                      // 送审图像对应的图像审核表id
	Img2taskIndexMap map[int]int                   // 图像审核序列下标->任务序列下标的映射map
	ActionMap        map[string]*ImageAuditAction  // 动作Id号-action的map
}

func NewImageAuditTaskBatchControlBlock(tasks []*dbstruct.ImageAuditTask, batchId string) *ImageAuditTaskBatchControlBlock {
	if len(tasks) == 0 {
		return nil
	}
	ctrlBlock := &ImageAuditTaskBatchControlBlock{
		BatchId:          batchId,
		TaskCtrlBlocks:   make([]*ImageAuditTaskControlBlock, 0),
		Images:           make([]*dbstruct.MediaComponent, 0),
		ImageAuditIds:    make([]string, 0),
		Img2taskIndexMap: make(map[int]int),
		ActionMap:        make(map[string]*ImageAuditAction),
	}

	imageIndex := 0
	taskIndex := 0
	mediaFillables := make([]mediafiller.MediaFillable, 0)
	for _, task := range tasks {
		taskCtrlBlock := NewImageAuditTaskControlBlock(task)
		ctrlBlock.TaskCtrlBlocks = append(ctrlBlock.TaskCtrlBlocks, taskCtrlBlock)
		ctrlBlock.RecordAction(taskCtrlBlock)
		imageIndex, taskIndex = ctrlBlock.RecordImage(taskCtrlBlock, &mediaFillables, imageIndex, taskIndex)
	}

	mediafiller.FillListInternal(&gin.Context{}, mediaFillables)

	return ctrlBlock
}

func (ctrlBlock *ImageAuditTaskBatchControlBlock) RecordAction(taskCtrlBlock *ImageAuditTaskControlBlock) {
	ctx := &gin.Context{}
	// 写map记录
	if ctrlBlock.ActionMap[taskCtrlBlock.ActionId] == nil { // 写入ctrlBlock.ActionMap
		ctrlBlock.ActionMap[taskCtrlBlock.ActionId] = NewImageAuditAction()
		// 将此前批次对该元素未成功，待处理的审核全部置为已失效
		if err := _DefaultImageAuditTask.OpHandleOverdue(ctx, taskCtrlBlock.ImageAuditTask, util.DerefString(taskCtrlBlock.ImageAuditTask.BatchId)); err != nil {
			logger.Error("_DefaultImageAuditTask OpHandleOverdue fail :%v", err)
		}

	}
	ctrlBlock.ActionMap[taskCtrlBlock.ActionId].Record(taskCtrlBlock)
}

func (ctrlBlock *ImageAuditTaskBatchControlBlock) RecordImage(taskCtrlBlock *ImageAuditTaskControlBlock, mediaFillables *[]mediafiller.MediaFillable, imageIndex int, taskIndex int) (newImageIndex int, newTaskIndex int) {

	// 未分片
	if util.DerefInt64(taskCtrlBlock.ImageAuditTask.IsFragmented) == 0 {
		ctrlBlock.Images = append(ctrlBlock.Images, taskCtrlBlock.ImageAuditTask.AuditedMedia)
		*mediaFillables = append(*mediaFillables, taskCtrlBlock.ImageAuditTask.AuditedMedia)
		ctrlBlock.Img2taskIndexMap[imageIndex] = taskIndex
		ctrlBlock.ImageAuditIds = append(ctrlBlock.ImageAuditIds, util.DerefString(taskCtrlBlock.ImageAuditTask.ImageAuditId))
		imageIndex++
	} else { // 已分片
		imageIds := taskCtrlBlock.ImageAuditTask.AuditedMedia.GetImageIds()
		imageAuditIds := util.DerefStringSlice(taskCtrlBlock.ImageAuditTask.ImageAuditFragmentIds)
		for i, imageId := range imageIds {
			image := &dbstruct.MediaComponent{
				ImageIds: util.Int64Slice([]int64{imageId}),
			}
			ctrlBlock.Images = append(ctrlBlock.Images, image)
			*mediaFillables = append(*mediaFillables, image)
			ctrlBlock.ImageAuditIds = append(ctrlBlock.ImageAuditIds, imageAuditIds[i])
			ctrlBlock.Img2taskIndexMap[imageIndex] = taskIndex
			imageIndex++
		}
	}

	taskIndex++
	return imageIndex, taskIndex
}

// 图像审核任务控制块
// ActionId设计初衷：由于图像审核是定时任务触发的批量作业，如果在一次作业间隔有针对同一个图像媒体的多次更新，则会提交关于它的多次审核，需要保证数据一致性
type ImageAuditTaskControlBlock struct {
	// 静态元素
	ActionId       string                   // 审核动作id号，由图像审核实体数据库四要素拼接而成，用于指示对数据库-表-单条数据-图像字段的审核动作
	ImageAuditTask *dbstruct.ImageAuditTask // 审核任务

	// 动态元素
	IsTaskPassed        bool // 任务状态，仅当任务已确定完成，即已完成审核任务的分片数 = 审核任务分片数时，才有意义
	AuditedFragmentsNum int  // 已完成审核任务的分片数
}

// 新建图像审核任务块
func NewImageAuditTaskControlBlock(task *dbstruct.ImageAuditTask) (tcb *ImageAuditTaskControlBlock) {
	tcb = &ImageAuditTaskControlBlock{
		ActionId: fmt.Sprintf("%v%v%v%v", util.DerefString(task.AssociativeDatabase), util.DerefString(task.AssociativeTableName),
			util.DerefInt64(task.AssociativeTableId), util.DerefString(task.AssociativeTableColumn)),
		ImageAuditTask:      task,
		IsTaskPassed:        true,
		AuditedFragmentsNum: 0,
	}
	return
}