adds email notifications

db/util/email_templates.go

@@ -0,0 +1,67 @@
+package util
+
+import (
+	"bytes"
+	"errors"
+	t "html/template"
+
+	"github.com/pocketbase/pocketbase/tools/template"
+)
+
+type EmailData struct {
+	AppUrl        string
+	RecipientName string
+	Content       t.HTML
+	Link          string
+	FollowerName  string
+}
+
+var notificationTemplates = map[NotificationType]string{
+	TrailCreate:  "{{.Author}} has created a new trail: {{.trail}}.",
+	TrailShare:   "{{.Author}} has shared a trail with you: {{.trail}}.",
+	ListCreate:   "{{.Author}} has created a new list: {{.list}}.",
+	ListShare:    "{{.Author}} has shared a list with you: {{.list}}.",
+	NewFollower:  "Good news! You have a new follower: {{.Author}}.",
+	TrailComment: "{{.Author}} commented on your trail '{{.trail}}': '{{.comment}}'.",
+}
+
+func GenerateHTML(appUrl string, recipientName string, authorName string, notificationType NotificationType, metadata map[string]string) (string, error) {
+	registry := template.NewRegistry()
+
+	// Get custom content template for the notification type
+	customTemplate, exists := notificationTemplates[notificationType]
+	if !exists {
+		return "", errors.New("unknown notification type")
+	}
+
+	// Create content template with dynamic data
+	contentTmpl, err := t.New("content").Parse(customTemplate)
+	if err != nil {
+		return "", err
+	}
+
+	// Render the custom content with data
+	metadata["Author"] = authorName
+	var contentBuffer bytes.Buffer
+	err = contentTmpl.Execute(&contentBuffer, metadata)
+	if err != nil {
+		return "", err
+	}
+
+	// Assemble the final email with boilerplate and custom content
+	content := EmailData{
+		AppUrl:        appUrl,
+		RecipientName: recipientName,
+		Content:       t.HTML(contentBuffer.String()),
+	}
+
+	html, err := registry.LoadFiles(
+		"templates/mail/notification.html",
+	).Render(content)
+
+	if err != nil {
+		return "", err
+	}
+
+	return html, nil
+}