add pocketbase

backend/custom/gtm/gtm.go

@@ -0,0 +1,56 @@
+package gtm
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"text/template"
+
+	"github.com/pocketbase/pocketbase"
+	"github.com/pocketbase/pocketbase/core"
+	"github.com/pocketbase/pocketbase/tools/router"
+)
+
+func ServeTagMangerJS(app *pocketbase.PocketBase, se *core.ServeEvent) *router.Route[*core.RequestEvent] {
+	return se.Router.GET("/api/gtm/script.js", func(e *core.RequestEvent) error {
+
+		settings, err := GetSettings(app)
+		if err != nil {
+			return err
+		}
+
+		file, err := JS.ReadFile("gtm.js")
+		if err != nil {
+			return err
+		}
+		templ, err := template.New("test").Parse(string(file))
+
+		buf := bytes.Buffer{}
+		templ.Execute(&buf, map[string]interface{}{
+			"GtagID": settings.GtagID,
+		})
+		if err != nil {
+			return err
+		}
+
+		e.Response.Header().Set("Content-Type", "application/javascript")
+		return e.String(http.StatusOK, buf.String())
+	})
+}
+
+type GTagSettings struct {
+	GtagID string `json:"gtagID"`
+}
+
+func GetSettings(app *pocketbase.PocketBase) (*GTagSettings, error) {
+	record, err := app.FindFirstRecordByFilter("settings", "key='gtagID'", nil)
+
+	settings := GTagSettings{}
+	json.Unmarshal([]byte(record.GetString("value")), &settings)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &settings, nil
+}

backend/custom/gtm/gtm.js

@@ -0,0 +1,29 @@
+export class GTM {
+  gtagID = "{{.GtagID}}";
+
+  constructor() {
+    this.insertScript(window, document, 'script', 'dataLayer', this.gtagID);
+    this.insertNoScript();
+  }
+
+
+  insertScript(w, d, s, l, i) {
+    w[l] = w[l] || []; w[l].push({
+      'gtm.start':
+        new Date().getTime(), event: 'gtm.js'
+    }); var f = d.getElementsByTagName(s)[0],
+      j = d.createElement(s), dl = l != 'dataLayer' ? '&l=' + l : ''; j.async = true; j.src =
+        'https://www.googletagmanager.com/gtm.js?id=' + i + dl; f.parentNode.insertBefore(j, f);
+  }
+
+  insertNoScript() {
+    const noscript = document.createElement("noscript");
+    const iframe = document.createElement("iframe");
+    iframe.src = "https://www.googletagmanager.com/ns.html?id=" + this.gtagID;
+    iframe.height = 0;
+    iframe.width = 0;
+    iframe.style = "display:none;visibility:hidden";
+    noscript.appendChild(iframe);
+    document.body.appendChild(noscript);
+  }
+}

backend/custom/gtm/js.go

@@ -0,0 +1,8 @@
+package gtm
+
+import (
+	"embed"
+)
+
+//go:embed gtm.js
+var JS embed.FS