package web

import (
	"strings"
	"videoweb/app/service/playletser"

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

// More 专题详情页 SSR：专题由路由 slug 标识；历史 /more 地址会跳转到 /topic canonical。
func More(c *gin.Context) {
	q := playletser.ParseRecommendQuery(routeOrQuery(c, "page", "page"))
	if slug := strings.TrimSpace(c.Param("slug")); slug != "" {
		if id := playletser.ParseDetailID(slug); id > 0 {
			q.ThemeID = id
		} else {
			q.ThemeSlug = slug
		}
	}
	if path := c.Request.URL.Path; path == "/more" || strings.HasPrefix(path, "/more/") {
		redirectCanonical(c, playletser.RecommendPagePath(q))
		return
	}
	themes := playletser.FetchThemesOrEmpty(c, 2)
	themeName := ""
	for _, theme := range themes {
		matchesID := q.ThemeID > 0 && theme.ID == q.ThemeID
		matchesSlug := strings.TrimSpace(q.ThemeSlug) != "" && strings.EqualFold(strings.TrimSpace(theme.Slug), strings.TrimSpace(q.ThemeSlug))
		if !matchesID && !matchesSlug {
			continue
		}
		themeName = strings.TrimSpace(theme.Name)
		if q.ThemeID <= 0 {
			q.ThemeID = theme.ID
		}
		if strings.TrimSpace(theme.Slug) != "" {
			q.ThemeSlug = strings.TrimSpace(theme.Slug)
		}
		break
	}
	if redirectCanonical(c, playletser.RecommendPagePath(q)) {
		return
	}
	raw := playletser.FetchRecommendListOrEmpty(c, q)
	if playletser.PageOutOfRange(q.PageNum, q.PageSize, raw.TotalCount) {
		NotFound(c, "页面不存在")
		return
	}
	hasIdentifier := q.ThemeID > 0 || strings.TrimSpace(q.ThemeSlug) != ""
	if emptyScopedPage(hasIdentifier, raw.TotalCount, len(raw.List)) {
		NotFound(c, "专题不存在")
		return
	}
	title := playletser.RecommendThemeTitle(themeName, raw.SeoInfo.Title, q.ThemeID)
	if queryTitle := strings.TrimSpace(c.Query("title")); queryTitle != "" {
		title = queryTitle
	}
	heading := title
	if !strings.HasSuffix(heading, "介绍") {
		heading += "介绍"
	}
	description := strings.TrimSpace(raw.SeoInfo.Description)
	if description == "" {
		description = "精品高分 AI 成人短剧专题，精选高人气、高评分 AI 原创短剧，每日持续更新。涵盖多种热门剧情与角色设定，为你带来高质量、高清流畅的观影体验。"
	}
	data := gin.H{
		"title":            title,
		"pageKey":          "topic",
		"pageName":         title,
		"pageTitle":        title,
		"topicHeading":     heading,
		"topicDescription": description,
		"pagePath":         playletser.RecommendCanonicalPath(q.ThemeID, q.ThemeSlug),
		"seoInfo":          raw.SeoInfo,
		"list":             raw.List,
		"itemListOffset":   (q.PageNum - 1) * q.PageSize,
		"pagination":       playletser.BuildRecommendPagination(q, raw.TotalCount),
	}
	if raw.TotalCount <= 0 || len(raw.List) == 0 {
		setNoIndex(data, true)
	}
	HTMLOK(c, "more.html", data)
}