package applistser

import (
	"fmt"
	"strings"
)

// PageVM 福利应用页模板数据
type PageVM struct {
	Categories []CategoryVM
}

type CategoryVM struct {
	ID        int64
	SectionID string
	Title     string
	Intro     string
	Total     int
	Apps      []AppCardVM
	IsFirst   bool
}

type AppCardVM struct {
	ID    int64
	Name  string
	Intro string
	Logo  string
	URL   string
}

// BuildPageVM 按接口返回的 categoryList / appList 顺序组装页面数据，不做二次排序。
func BuildPageVM(data *AppListResp) PageVM {
	vm := PageVM{Categories: []CategoryVM{}}
	if data == nil {
		return vm
	}
	list := data.CategoryList
	if len(list) == 0 && data.Category.ID > 0 {
		list = []AppCategoryInfo{data.Category}
	}
	if len(list) == 0 {
		return vm
	}

	for i, cat := range list {
		cards := make([]AppCardVM, 0, len(cat.AppList))
		for _, app := range cat.AppList {
			name := strings.TrimSpace(app.Name)
			if name == "" {
				continue
			}
			href := strings.TrimSpace(app.URL)
			if href == "" {
				href = "#"
			}
			intro := strings.TrimSpace(app.Intro)
			if intro == "" {
				intro = strings.TrimSpace(app.Description)
			}
			cards = append(cards, AppCardVM{
				ID:    app.ID,
				Name:  name,
				Intro: intro,
				Logo:  strings.TrimSpace(app.Logo),
				URL:   href,
			})
		}
		title := strings.TrimSpace(cat.Title)
		if title == "" {
			title = "应用分类"
		}
		vm.Categories = append(vm.Categories, CategoryVM{
			ID:        cat.ID,
			SectionID: fmt.Sprintf("app-category-%d", cat.ID),
			Title:     title,
			Intro:     strings.TrimSpace(cat.Intro),
			Total:     len(cards),
			Apps:      cards,
			IsFirst:   i == 0,
		})
	}
	return vm
}