Implement scheduled broadcast system for targeted group messaging

[viganogabriele]

Overview

Currently, there is no unified way to broadcast messages to specific groups with scheduling support. We need a complete broadcast system that works both from the dashboard and via Telegram commands.

Note: Dashboard-related sub-issues are tracked in the admin repository.

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Features

1. Group Management (Dashboard)

• Assign a tag number to a group of channels (e.g., tag feat: Telex and build/ci changes #1 = ['channel_A', 'channel_B', 'channel_C'])
• Create, edit, and delete tags via dashboard
• Each tag has:
  • A unique number identifier
  • A name/description
  • A list of associated group IDs

2. Message Creation (Telegram)

• Admin sends /announce command to the bot
• Bot prompts for the tag number of target groups
• Bot prompts for the message content with full formatting support:
  • Text (bold, italic, code, etc.)
  • Images/photos
  • Videos
  • Documents
• Bot prompts for send now or schedule

3. Scheduling System

• Store scheduled announcements in database
• Cron job / scheduler for time-based delivery
• Handle bot restart without losing scheduled jobs

4. Delivery (Bot)

• Send formatted message to all groups in selected tag
• Track delivery status per group
• Generate delivery summary report

5. Dashboard Integration

• View all scheduled announcements
• Modify pending announcements (groups, content, time)
• View delivery reports

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Sub-issues

Telegram (this repo)

• [Broadcast] /announce command (Telegram) #122: /announce command
• [Broadcast] Scheduling system #123: Scheduling system
• [Broadcast] Delivery system #124: Delivery system

Dashboard (admin repo)

• See admin repository

Labels: enhancement

[coderabbitai]

🔗 Related PRs

#70 - feat: save group tag in DB on create [merged]

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