package web

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

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

// RobotsTXT 动态 robots.txt（含 Sitemap 声明）。
func RobotsTXT(c *gin.Context) {
	cfg := configser.FetchAppConfigVMOrEmpty(c)
	foreverURL := seoser.ResolveSiteURL(c, cfg)
	c.Header("Content-Type", "text/plain; charset=utf-8")
	c.Header("Cache-Control", "public, max-age=3600")
	c.String(http.StatusOK, seoser.BuildRobotsTXT(foreverURL))
}

// SEOVerifyFile 提供百度 HTML 验证文件和 IndexNow key.txt。
func SEOVerifyFile(c *gin.Context) {
	codes := seoser.VerifyFromConfig()
	name := strings.TrimPrefix(c.Request.URL.Path, "/")

	switch {
	case codes.BaiduHTML != "" && name == codes.BaiduHTML:
		c.Header("Cache-Control", "public, max-age=86400")
		c.String(http.StatusOK, codes.Baidu)
		return
	case codes.IndexNowKey != "" && name == codes.IndexNowKey+".txt":
		c.Header("Cache-Control", "public, max-age=86400")
		c.Data(http.StatusOK, "text/plain; charset=utf-8", []byte(codes.IndexNowKey))
		return
	}

	c.Status(http.StatusNotFound)
}