package web

import (
	"net/http"
	"strings"

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

// attachTrackerPage 按响应状态和路径注入 pageKey / pageName（handler 可显式覆盖）。
// 所有 HTML 页面都必须得到明确页面信息，避免埋点落入 unknown / 未知页面。
func attachTrackerPage(c *gin.Context, code int, data gin.H) {
	if data == nil {
		return
	}
	key, name := trackerPageFromRequest(c.Request.URL.Path, code)
	if code >= http.StatusBadRequest {
		data["pageKey"] = key
		data["pageName"] = name
		return
	}
	existingKey, _ := data["pageKey"].(string)
	existingName, _ := data["pageName"].(string)
	existingKey = strings.TrimSpace(existingKey)
	existingName = strings.TrimSpace(existingName)

	if existingKey == "" || existingKey == "unknown" {
		data["pageKey"] = key
	}
	if existingName == "" || existingName == "未知页面" {
		data["pageName"] = name
	}
}

func trackerPageFromRequest(path string, code int) (pageKey, pageName string) {
	if code >= http.StatusInternalServerError {
		return "server_error", "服务异常页面"
	}
	if code >= http.StatusBadRequest {
		return "not_found", "404页面"
	}
	return trackerPageFromPath(path)
}

func trackerPageFromPath(path string) (pageKey, pageName string) {
	p := strings.TrimSpace(path)
	if p == "" || p == "/" {
		return "home", "首页"
	}
	// 去掉尾部斜杠，便于精确匹配
	p = strings.TrimSuffix(p, "/")
	switch {
	case trackerPathHasPrefix(p, "/list"):
		return "list", "短剧列表"
	case trackerPathHasPrefix(p, "/series"):
		return "series", "AI成人剧集"
	case trackerPathHasPrefix(p, "/tag"), trackerPathHasPrefix(p, "/tag-list"):
		return "tag_list", "标签详情"
	case trackerPathHasPrefix(p, "/rank"):
		return "rank", "排行榜"
	case trackerPathHasPrefix(p, "/today-update"):
		return "today_update", "今日更新"
	case trackerPathHasPrefix(p, "/category"):
		return "category_detail", "分类详情"
	case trackerTopicIndexPath(p):
		return "theme_index", "专题列表"
	case trackerPathHasPrefix(p, "/topic"), trackerPathHasPrefix(p, "/more"):
		return "topic", "专题详情"
	case trackerPathHasPrefix(p, "/download-app"):
		return "download_app", "下载APP"
	case trackerPathHasPrefix(p, "/application"):
		return "application", "应用推荐"
	case trackerPathHasPrefix(p, "/home-road"):
		return "home_road", "回家的路"
	case trackerPathHasPrefix(p, "/detail"):
		return "detail", "短剧详情"
	case trackerPathHasPrefix(p, "/play"):
		return "play", "播放页"
	case trackerPathHasPrefix(p, "/login"):
		return "login", "登录"
	case trackerPathHasPrefix(p, "/register"):
		return "register", "注册"
	case trackerPathHasPrefix(p, "/user-center"):
		return "user_center", "个人中心"
	case trackerPathHasPrefix(p, "/deposit"):
		return "deposit", "充值中心"
	case trackerPathHasPrefix(p, "/collect"):
		return "collect", "我的收藏"
	case trackerPathHasPrefix(p, "/history"):
		return "history", "观看历史"
	case trackerPathHasPrefix(p, "/setting"):
		return "setting", "设置"
	case trackerPathHasPrefix(p, "/edit-profile"):
		return "edit_profile", "编辑资料"
	case trackerPathHasPrefix(p, "/edit-password"):
		return "edit_password", "修改密码"
	case trackerPathHasPrefix(p, "/search"):
		return "search", "搜索结果页"
	case trackerPathHasPrefix(p, "/about-us"):
		return "about_us", "关于我们"
	case trackerPathHasPrefix(p, "/user-agreement"):
		return "user_agreement", "用户协议"
	case trackerPathHasPrefix(p, "/privacy-policy"):
		return "privacy_policy", "隐私政策"
	case trackerPathHasPrefix(p, "/help-center"):
		return "help_center", "帮助中心"
	case trackerPathHasPrefix(p, "/richtext"):
		return "rich_text", "富文本页"
	case trackerPathHasPrefix(p, "/feedback"):
		return "feedback", "问题反馈"
	case trackerPathHasPrefix(p, "/nav"), trackerPathHasPrefix(p, "/dh"):
		return "nav", "官方导航"
	default:
		return "internal_other", "站内其他页面"
	}
}

func trackerPathHasPrefix(path, base string) bool {
	return path == base || strings.HasPrefix(path, base+"/")
}

func trackerTopicIndexPath(path string) bool {
	if path == "/topic" || path == "/more" {
		return true
	}
	return strings.HasPrefix(path, "/topic/page/") || strings.HasPrefix(path, "/more/page/")
}