mtg-online-drafter/docs/development/devlog/2025-12-16-191500_reconnection_and_autopick.md

2025-12-16 - Reconnection and Auto-Pick

Reconnection Logic

• Use localStorage.setItem('active_room_id', roomId) in LobbyManager to persist connection state.
• Upon page load, if a saved room ID exists, attempted to automatically reconnect via rejoin_room socket event.
• Updated socket.on('join_room') and rejoin_room on the server to update the player's socket ID mapping, canceling any pending "disconnect" timers.

Disconnection Handling

• Updated RoomManager to track socketId and isOffline status for each player.
• In index.ts, socket.on('disconnect'):
  • Marks player as offline.
  • Starts a 30-second timer.
  • If timer expires (user did not reconnect):
    • Triggers draftManager.autoPick(roomId, playerId).
    • autoPick selects a random card from the active pack to unblock the draft flow.

Auto-Pick Implementation

• Added autoPick to DraftManager:
  • Checks if player has an active pack.
  • Selects random index.
  • Calls pickCard internally to process the pick (add to pool, pass pack, etc.).