package service

import (
	"ai-agent/workflow/dao"
	"ai-agent/workflow/model/dto"
	"ai-agent/workflow/model/entity"
	"ai-agent/workflow/service/einograph"
	"context"
	"fmt"
	"sort"

	"gitea.redpowerfuture.com/red-future/common/utils"
	"github.com/gogf/gf/v2/util/gconv"
)

var CreationInfoService = new(creationInfoService)

type creationInfoService struct{}

func (s *creationInfoService) Creation(ctx context.Context, req *dto.CreationInput) (err error) {
	run, err := einograph.BuildCreationGraph(ctx)
	if err != nil {
		return fmt.Errorf("构建失败: %w", err)
	}

	output, err := run.Invoke(ctx, req)
	if err != nil {
		return fmt.Errorf("执行失败: %w", err)
	}
	// ========== 核心修复：先转 map，再取 output ==========
	var resultMap map[string]any
	if err := gconv.Scan(output, &resultMap); err != nil {
		return fmt.Errorf("解析结果map失败: %w", err)
	}

	// 取出内层 output
	realOutput := resultMap["output"]

	// 解析到你的结构体
	var creationOutput dto.CreationOutput
	if err := gconv.Scan(realOutput, &creationOutput); err != nil {
		return fmt.Errorf("解析CreationOutput失败: %w", err)
	}
	for _, item := range creationOutput.Items {
		dao.CreationInfoDao.Insert(ctx, &dto.Create{
			ImageUrls:   item.ImageUrls,
			HtmlFileUrl: item.HtmlFileUrl,
			Title:       item.Title,
			Theme:       item.Theme,
			ContentType: item.ContentType,
		})
	}
	return
}

func (s *creationInfoService) List(ctx context.Context, req *dto.ListCreationInfoReq) (res *dto.ListCreationInfoRes, err error) {
	user, err := utils.GetUserInfo(ctx)
	if err != nil {
		return
	}
	req.Creator = user.UserName
	list, total, err := dao.CreationInfoDao.List(ctx, req)
	if err != nil {
		return
	}
	res = &dto.ListCreationInfoRes{
		Total: total,
	}
	res.ImgAddressPrefix, err = utils.GetFileAddressPrefix(ctx)
	if err != nil {
		return
	}
	tree := s.ConvertToTree(list)
	res.Tree = tree
	return
}

// ConvertToTree
// 第一层：日期 倒序
// 第二层：ContentType 倒序
// 第三层：Theme 倒序
// Theme 下的 Title 按时间倒序编号 Title-1、Title-2…
func (s *creationInfoService) ConvertToTree(list []*entity.CreationInfo) []dto.TimeNode {
	// ========== 1. 按日期分组 ==========
	timeMap := make(map[string][]*entity.CreationInfo)
	for _, item := range list {
		dateStr := item.CreatedAt.Format("Y-m-d")
		timeMap[dateStr] = append(timeMap[dateStr], item)
	}

	// 日期倒序
	var dateList []string
	for dateStr := range timeMap {
		dateList = append(dateList, dateStr)
	}
	sort.Slice(dateList, func(i, j int) bool {
		return dateList[i] > dateList[j]
	})

	var tree []dto.TimeNode

	// ========== 2. 遍历日期 ==========
	for _, dateStr := range dateList {
		items := timeMap[dateStr]

		// ========== ContentType 分组 + 【时间倒序】 ==========
		ctMap := make(map[string][]*entity.CreationInfo)
		for _, item := range items {
			ctMap[item.ContentType] = append(ctMap[item.ContentType], item)
		}

		// 把 ContentType 按【最新时间倒序】排序
		var ctList []string
		for ct := range ctMap {
			ctList = append(ctList, ct)
		}
		sort.Slice(ctList, func(i, j int) bool {
			ctiItems := ctMap[ctList[i]]
			ctjItems := ctMap[ctList[j]]
			return ctiItems[0].CreatedAt.After(ctjItems[0].CreatedAt)
		})

		var ctNodes []dto.ContentTypeNode
		for _, ct := range ctList {
			ctItems := ctMap[ct]

			// ========== Theme 分组 + 【时间倒序】 ==========
			themeMap := make(map[string][]*entity.CreationInfo)
			for _, item := range ctItems {
				themeMap[item.Theme] = append(themeMap[item.Theme], item)
			}

			// Theme 按【最新时间倒序】排序
			var themeList []string
			for theme := range themeMap {
				themeList = append(themeList, theme)
			}
			sort.Slice(themeList, func(i, j int) bool {
				tiItems := themeMap[themeList[i]]
				tjItems := themeMap[themeList[j]]
				return tiItems[0].CreatedAt.After(tjItems[0].CreatedAt)
			})

			var themeNodes []dto.ThemeNode
			for _, theme := range themeList {
				themeItems := themeMap[theme]

				// ========== Theme 下的 Title 按【时间倒序】排列 + 编号 ==========
				sort.Slice(themeItems, func(a, b int) bool {
					return themeItems[a].CreatedAt.After(themeItems[b].CreatedAt)
				})

				var titleNodes []dto.TitleNode
				for idx, item := range themeItems {
					titleName := fmt.Sprintf("%s-%d", item.Title, idx+1)

					var imgList []dto.ImgNode
					for imgIdx, url := range item.ImageUrls {
						imgList = append(imgList, dto.ImgNode{
							Name: fmt.Sprintf("img-%d", imgIdx+1),
							Url:  url,
						})
					}

					titleNodes = append(titleNodes, dto.TitleNode{
						Title:       titleName,
						HtmlFileUrl: item.HtmlFileUrl,
						ImageUrls:   imgList,
					})
				}

				themeNodes = append(themeNodes, dto.ThemeNode{
					Theme:  theme,
					Titles: titleNodes,
				})
			}

			ctNodes = append(ctNodes, dto.ContentTypeNode{
				ContentType: ct,
				Themes:      themeNodes,
			})
		}

		tree = append(tree, dto.TimeNode{
			CreatedDate:  dateStr,
			ContentTypes: ctNodes,
		})
	}

	return tree
}