package web

import (
	"net/url"
	"strings"
	"videoweb/app/service/configser"
	"videoweb/app/service/seoser"

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

// Richtext 富文本页 SSR：GET /api/app/config/richtext/list?titles=
func Richtext(c *gin.Context) {
	title := routeOrQuery(c, "title", "title")
	target := "/richtext"
	if title != "" {
		target += "/" + url.PathEscape(title)
	}
	target += "/"
	if redirectCanonical(c, target) {
		return
	}
	renderRichtext(c, title)
}

func RichtextPage(title string) gin.HandlerFunc {
	return func(c *gin.Context) {
		page := configser.FetchRichTextByTitle(c, title)
		if !page.Found {
			fallbackTemplates := map[string]string{
				"关于我们": "aboutUs.html",
				"用户协议": "userAgreement.html",
				"隐私政策": "privacyPolicy.html",
				"帮助中心": "helpCenter.html",
			}
			if fallbackTemplate := fallbackTemplates[title]; fallbackTemplate != "" {
				data := gin.H{"title": title}
				applyRichtextIndexPolicy(data, title)
				if title == "帮助中心" {
					data["faqItems"] = []seoser.FAQItem{
						{Question: "无法登录账号怎么办？", Answer: "请确认邮箱与密码是否正确；若忘记密码，可在登录页面使用“找回密码”。"},
						{Question: "观看记录没有同步？", Answer: "请确认已登录同一账号并保持网络连接，记录通常会自动同步。"},
						{Question: "视频无法播放或加载缓慢？", Answer: "建议切换网络、刷新页面或更新浏览器；问题持续时可提交反馈。"},
						{Question: "如何管理收藏内容？", Answer: "进入个人中心的“追剧与收藏”页面，可查看或取消收藏。"},
					}
				}
				HTMLOK(c, fallbackTemplate, data)
				return
			}
		}
		renderRichtextData(c, title, page)
	}
}

func renderRichtext(c *gin.Context, title string) {
	title = strings.TrimSpace(title)
	page := configser.FetchRichTextByTitle(c, title)
	renderRichtextData(c, title, page)
}

func renderRichtextData(c *gin.Context, title string, page configser.RichTextPageVM) {
	if !page.Found {
		NotFound(c, "未找到该内容")
		return
	}

	displayTitle := page.Title
	if displayTitle == "" {
		displayTitle = "内容详情"
	}

	data := gin.H{
		"title":       displayTitle,
		"richtext":    page,
		"richtextKey": title,
	}
	applyRichtextIndexPolicy(data, title)
	HTMLOK(c, "richtext.html", data)
}

func applyRichtextIndexPolicy(data gin.H, title string) {
	switch strings.TrimSpace(title) {
	case "关于我们", "帮助中心":
		return
	default:
		setNoIndex(data, true)
	}
}