package officialWebsiteser

import (
	"91porn-server/models/v/officialWebsitemod"
	"time"

	"go.mongodb.org/mongo-driver/bson"
	"go.mongodb.org/mongo-driver/bson/primitive"
	"go.mongodb.org/mongo-driver/mongo/options"
)

type NewsListReq struct {
	PageNumber int64 `form:"PageNumber"`
	PageSize   int64 `form:"pageSize"`
}

type NewsListResp struct {
	HasNext bool        `json:"hasNext"`
	List    []*NewsResp `json:"list"`
}

type NewsResp struct {
	ID          string        `json:"id"`
	Title       string        `json:"title"`
	SeoSlug     string        `json:"seoSlug"`
	Description string        `json:"description"`
	Cover       string        `json:"cover"`
	Url         string        `json:"url"`
	Tags        []NewsTagResp `json:"tags"`
	CreatedAt   time.Time     `json:"createdAt,omitempty" bson:"createdAt,omitempty"`
}

type NewsTagResp struct {
	ID    string `json:"id,omitempty" bson:"_id,omitempty"`
	Name  string `json:"name,omitempty" bson:"name,omitempty"`
	Type  string `json:"type,omitempty" bson:"type,omitempty"`
	IsHot bool   `json:"isHot,omitempty" bson:"isHot,omitempty"`
}

func NewsList(req *NewsListReq) (resp *NewsListResp, err error) {
	var filter = bson.M{"isActive": true}
	var newsMod = &officialWebsitemod.News{}
	var skip, limit = transPageAndPageNumber(req.PageSize, req.PageNumber)
	data, err := newsMod.FindMany(filter, options.Find().SetSort(bson.D{{Key: "isHot", Value: -1}, {Key: "sort", Value: -1}, {Key: "createdAt", Value: -1}}).SetSkip(skip).SetLimit(limit+1))
	if err != nil {
		return nil, err
	}
	resp = &NewsListResp{
		HasNext: len(data) > int(limit),
		List:    make([]*NewsResp, 0),
	}
	for _, v := range data {
		newsResp := &NewsResp{
			ID:          v.ID.Hex(),
			Title:       v.Title,
			SeoSlug:     v.SeoSlug,
			Description: v.Description,
			Cover:       v.Cover,
			Url:         v.Url,
			CreatedAt:   v.CreatedAt,
		}
		for _, tag := range v.Tags {
			newsResp.Tags = append(newsResp.Tags, NewsTagResp{
				ID:    tag.ID.Hex(),
				Name:  tag.Name,
				Type:  tag.Type,
				IsHot: tag.IsHot,
			})
		}
		resp.List = append(resp.List, newsResp)
	}
	if resp.HasNext {
		resp.List = resp.List[:len(resp.List)-1]
	}
	return
}

type NewsDetailReq struct {
	ID                string `uri:"id" binding:"required"`
	RelatedPageNumber int64  `form:"RelatedPageNumber"`
	RelatedPageSize   int64  `form:"RelatedPageSize"`
}

type NewsDetailResp struct {
	ID          string        `json:"id"`
	Title       string        `json:"title"`
	SeoSlug     string        `json:"seoSlug"`
	Description string        `json:"description"`
	Cover       string        `json:"cover"`
	Url         string        `json:"url"`
	Tags        []NewsTagResp `json:"tags"`
	Detail      string        `json:"detail"`
	Related     []*NewsResp   `json:"related"`
	CreatedAt   time.Time     `json:"createdAt"`
}

func NewsDetail(req *NewsDetailReq) (resp NewsDetailResp, err error) {
	// 兼容 id 与 seoSlug：24 位 hex 按 _id 查，否则按 seoSlug 查
	var filter = bson.M{"isActive": true}
	if id, e := primitive.ObjectIDFromHex(req.ID); e == nil {
		filter["_id"] = id
	} else {
		filter["seoSlug"] = req.ID
	}
	var newsMod = &officialWebsitemod.News{}
	err = newsMod.FindOne(filter)
	if err != nil {
		return
	}
	resp = NewsDetailResp{
		ID:          newsMod.ID.Hex(),
		Title:       newsMod.Title,
		SeoSlug:     newsMod.SeoSlug,
		Description: newsMod.Description,
		Cover:       newsMod.Cover,
		Url:         newsMod.Url,
		Detail:      newsMod.Detail,
		CreatedAt:   newsMod.CreatedAt,
	}
	var tagIDs []primitive.ObjectID
	for _, tag := range newsMod.Tags {
		resp.Tags = append(resp.Tags, NewsTagResp{
			ID:    tag.ID.Hex(),
			Name:  tag.Name,
			Type:  tag.Type,
			IsHot: tag.IsHot,
		})
		tagIDs = append(tagIDs, tag.ID)
	}

	if len(resp.Tags) > 0 {
		// 组装 Related，根据tagIDs搜索，并按照排序
		filter = bson.M{"tags._id": bson.M{"$in": tagIDs}, "isActive": true}
	} else {
		filter = bson.M{"isActive": true}
	}
	skip, limit := transPageAndPageNumber(req.RelatedPageSize, req.RelatedPageNumber)
	data, err := newsMod.FindMany(filter, options.Find().SetSort(bson.D{{Key: "isHot", Value: -1}, {Key: "sort", Value: -1}, {Key: "createdAt", Value: -1}}).SetSkip(skip).SetLimit(limit))
	if err != nil {
		return
	}
	for _, v := range data {
		newsResp := &NewsResp{
			ID:          v.ID.Hex(),
			Title:       v.Title,
			SeoSlug:     v.SeoSlug,
			Description: v.Description,
			Cover:       v.Cover,
			Url:         v.Url,
			CreatedAt:   v.CreatedAt,
		}
		for _, tag := range v.Tags {
			newsResp.Tags = append(newsResp.Tags, NewsTagResp{
				ID:    tag.ID.Hex(),
				Name:  tag.Name,
				Type:  tag.Type,
				IsHot: tag.IsHot,
			})
		}
		resp.Related = append(resp.Related, newsResp)
	}
	return
}