add pocketbase

backend/custom/seo/robots.go

@@ -0,0 +1,50 @@
+package seo
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strings"
+
+	"github.com/pocketbase/pocketbase"
+	"github.com/pocketbase/pocketbase/core"
+	"github.com/pocketbase/pocketbase/tools/router"
+)
+
+type Robots struct {
+	Robots []string
+}
+
+func ServeRobotsTxt(app *pocketbase.PocketBase, se *core.ServeEvent) *router.Route[*core.RequestEvent] {
+	return se.Router.GET("/robots.txt", func(e *core.RequestEvent) error {
+
+		text, err := getRobots(app)
+		if err != nil {
+			return err
+		}
+		return e.String(http.StatusOK, text)
+	})
+}
+
+func getRobots(app *pocketbase.PocketBase) (string, error) {
+	record, err := app.FindFirstRecordByFilter("settings", "key='robots_txt'", nil)
+	if err != nil {
+		return "", err
+	}
+
+	settings := Robots{}
+	json.Unmarshal([]byte(record.GetString("value")), &settings)
+
+	if err != nil {
+		return "", err
+	}
+
+	baseUrl, err := getBaseUrl(app)
+	if err != nil {
+		return "", err
+	}
+
+	settings.Robots = append(settings.Robots, fmt.Sprintf("\n\nSitemap: %s%s", baseUrl, "feeds/index.xml"))
+
+	return strings.Join(settings.Robots, "\n"), nil
+}