Notification Templates Admin

This document explains how notification templates work and how to manage them in the admin panel.

Runtime delivery (quick overview)

• Bell + message badges: The SPA uses a unified endpoint (GET /api/notifications/unified, auth:sanctum + verified) for counts, plus Echo/Reverb for real-time updates.
• Bell list loading: The bell notification list is loaded when the user visits the /notifications page (counts are maintained elsewhere).
• Real-time events: The per-user private channel (App.Models.User.{id}) broadcasts NotificationCreated (new bell item) and NotificationRead (read state sync across tabs/devices). Messaging updates use MessageSent.
• Chat digests: Unread messages are batched and sent via email every 15 minutes (configurable via scheduler) to reduce email fatigue.
• Unread message count: unread_message_count represents total unread messages across chats (not "unread chats"). The legacy GET /api/msg/unread-count endpoint is kept for compatibility but aligns with this naming.
• Device push: Web push notifications are handled separately; see docs/push-notifications.md.
• Telegram: Users can link their Telegram account to receive notifications via bot; see Telegram Notifications below.
• Notification actions: Bell notifications can include actionable buttons (e.g., approve/unapprove) that execute server-side actions directly from the notification list.

Overview

Notifications support multiple channels (Email, In-App/Bell, and Telegram) and localized templates. Defaults live in the repo as files; admins can create DB overrides per type/channel/locale. The system resolves templates with locale fallbacks (user -> Accept-Language -> app default -> en).

• Types registry: backend/config/notification_templates.php
• DB model: backend/app/Models/NotificationTemplate.php
• Services: NotificationLocaleResolver, NotificationTemplateResolver, NotificationTemplateRenderer
• In-app defaults: backend/resources/templates/notifications/bell/{locale}/{slug}.md
• Email defaults: Blade views at emails.notifications.{locale}.{slug} (legacy emails.notifications.{slug})

Admin Panel

Path: Admin → Notifications → Templates

• List view

  • Shows type, channel, locale, engine, status, version, updated at
  • Filters: channel, locale, type (slug labels)
  • Empty state: Explains that file defaults are in use; “Create override” CTA

• Create/Edit

  • Type (event trigger): Select populated from registry, filtered by selected channel
  • Channel: Email or In-App
  • Locale: defaults to app default
  • Engine: Blade/Markdown/Text
  • Subject (optional, email only)
  • Body (required)
  • Available variables: Lists variables from the registry entry
  • Prefill from defaults: Selecting type/channel/locale preloads body/engine from the file defaults

• Actions

  • Preview: Renders current draft
    • Email: HTML preview
    • In-App: pre-wrapped plain text preview
  • Compare with Default: Side-by-side DB vs file default for subject/body
  • Reset to Default: Deletes override so file default applies again
  • Send Test Email: Sends rendered email to the logged-in admin (email channel)

How resolution works

1. DB override (active) for type/channel/locale
2. File default for type/channel using locale fallback chain
3. Final safety fallback logs a warning

Seeding

A small seeder adds two inactive in-app overrides so the list isn’t empty on fresh setups:

• backend/database/seeders/NotificationTemplateSeeder.php
• Registered in DatabaseSeeder
• Uses enum values from App\\Enums\\NotificationType

Run it:

php backend/artisan db:seed --class=NotificationTemplateSeeder --force

Telegram Notifications

Users can link their Telegram account to receive notification messages from a bot configured by an admin.

Admin setup

1. Create a Telegram bot via @BotFather and obtain the bot token.
2. In the admin panel go to Settings (System group) and fill in Telegram Bot Token and Telegram Bot Username (without the @).
3. Register the webhook so Telegram forwards messages to your app:

curl "https://api.telegram.org/bot<TOKEN>/setWebhook?url=<APP_URL>/api/webhooks/telegram"

The webhook endpoint (POST /api/webhooks/telegram) is public (no auth) and handles incoming /start commands from users.

User linking flow

1. User opens Settings > Notifications and clicks Connect Telegram.
2. The frontend calls POST /api/telegram/link-token which generates a short-lived token (30 min) and returns a t.me deep link: https://t.me/<bot>?start=<token>.
3. The link opens in a new tab. When the user sends /start <token> to the bot, the webhook:
   • Validates the token and expiry.
   • Stores the Telegram chat_id on the user record.
   • Sends a confirmation message back via the bot.
4. The frontend polls GET /api/telegram/status every 3 seconds (up to 5 minutes) to detect the connection.
5. Once connected, the user sees a Disconnect button which calls DELETE /api/telegram/disconnect.

If a user sends /start without a token, the bot replies with a guidance message directing them to the app's notification settings page.

Mini App sign-in flow

• Telegram Mini App users authenticate via POST /api/auth/telegram/miniapp using Telegram.WebApp.initData.
• This flow is for account authentication/registration; notification delivery still uses bot chat linking (/start <token>) and telegram_chat_id.
• Existing users can continue linking/unlinking Telegram from Settings > Notifications without changing this behavior.
• Web push (device notifications) may be unavailable in Telegram Mini App webviews; the settings UI shows a Telegram-specific hint and recommends Telegram channel notifications in that context.

Per-type preferences

Each notification type has a telegram_enabled toggle alongside email_enabled and in_app_enabled. The NotificationService checks this preference before dispatching via TelegramNotificationChannel.

Key files

Purpose	Path
Channel implementation	app/Services/Notifications/TelegramNotificationChannel.php
Webhook handler	app/Http/Controllers/Telegram/TelegramWebhookController.php
Status / link / disconnect	app/Http/Controllers/Telegram/Get*.php, Generate*.php, Disconnect*.php
Migration	database/migrations/2026_02_16_000000_add_telegram_support.php
Frontend card	frontend/src/components/notifications/TelegramNotificationsCard.tsx
Admin settings	app/Filament/Pages/SystemSettings.php (Telegram section)

Database fields

users table: telegram_chat_id, telegram_link_token, telegram_link_token_expires_atnotification_preferences table: telegram_enabled (boolean, default false)

Notes & Next Steps

• Diff highlighting in Compare (currently plaintext side-by-side)
• Send Test: choose target user + sample payloads
• CLI: notifications:sync-templates to validate and diff DB vs file defaults
• Tests: unit (resolver/renderer/locale), feature (admin CRUD + preview/compare/reset/send-test), integration (override precedence and metadata)