1 files changed, 79 insertions, 0 deletions
diff --git a/internal/router/handlers/sitemap.xml.go b/internal/router/handlers/sitemap.xml.go
new file mode 100644
index 0000000..bb1df93
--- /dev/null
+++ b/internal/router/handlers/sitemap.xml.go
@@ -0,0 +1,79 @@
+package handlers
+
+import (
+	"log/slog"
+	"time"
+
+	"github.com/SayaAndy/saya-today-web/internal/router"
+	"github.com/gofiber/fiber/v2"
+)
+
+type SitemapXmlHandler struct {
+	router.BasicHandler
+}
+
+func init() {
+	router.Routes = append(router.Routes, &SitemapXmlHandler{})
+}
+
+func (r *SitemapXmlHandler) Filter() (method string, path string) {
+	return "GET", "/sitemap.xml"
+}
+
+func (r *SitemapXmlHandler) IsTemplated() bool {
+	return false
+}
+
+func (r *SitemapXmlHandler) TemplatesToInject() []string {
+	return []string{"views/pages/sitemap.xml"}
+}
+
+func (r *SitemapXmlHandler) ToCache() router.CacheSetting {
+	return router.ByUrlOnly
+}
+
+func (r *SitemapXmlHandler) CacheDuration() time.Duration {
+	return time.Hour
+}
+
+func (r *SitemapXmlHandler) ToValidateLang() router.LangSetting {
+	return router.NotRequired
+}
+
+func (r *SitemapXmlHandler) ContentType() string {
+	return fiber.MIMEApplicationXMLCharsetUTF8
+}
+
+func (r *SitemapXmlHandler) Render(c *fiber.Ctx, supplements *router.Supplements, lang string, templateMap fiber.Map) (statusCode int, err error) {
+	urls := []router.SitemapInfo{}
+	for _, route := range router.Routes {
+		sitemapInfo := route.SitemapInfo(supplements)
+		if sitemapInfo == nil {
+			continue
+		}
+
+		method, match := route.Filter()
+		lastMod, err := supplements.TemplateManager.GetLastModified(method + " " + match)
+		if err != nil {
+			slog.Warn("failed to get last modified for a route",
+				slog.String("error", err.Error()),
+				slog.String("method", method),
+				slog.String("match", match))
+			lastMod = time.Now()
+		}
+
+		for i := range sitemapInfo {
+			if sitemapInfo[i].LastModified.Before(lastMod) {
+				sitemapInfo[i].LastModified = lastMod
+			}
+			if sitemapInfo[i].ChangeFreq == "" {
+				sitemapInfo[i].ChangeFreq = "monthly"
+			}
+			urls = append(urls, sitemapInfo[i])
+		}
+	}
+
+	templateMap["URLs"] = urls
+
+	return fiber.StatusOK, nil
+}