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#10 deleted-last-message preview + #18 delete for me / for everyone

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#10: deleting the last message showed "No messages yet" in the chat list.
The sidebar sent an empty last_body for a deleted (content-cleared) row; now
it sends a last_deleted flag and the row renders "This message was deleted"
(or "You deleted this message"), matching the in-thread placeholder.

#18: added "Delete for me" alongside "Delete for everyone". A new message_hidden
table records a per-user hide; the thread + sidebar (last message, unread) filter
out the requesting user's hidden messages, and the hide is echoed to their other
devices (chat-hidden). "Delete for me" is offered on any message; "Delete for
everyone" stays sender-only.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Sravan
2026-08-11 22:31:17 +05:30
parent 9e80aee1c6
commit e359271157
4 changed files with 47 additions and 5 deletions
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server/repos.js
+6
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@@ -205,6 +205,12 @@ const messages = {
editBody: (id, body) => db.prepare('UPDATE messages SET body=?, edited_at=? WHERE id=?').run(body, now(), id),
// Delete-for-everyone: clear the content but keep the row (renders as a placeholder).
markDeleted: (id) => db.prepare("UPDATE messages SET deleted=1, body='', attachment_id=NULL, poll_id=NULL WHERE id=?").run(id),
// #18 Delete-for-me: hide a message from ONE user's view (the row + everyone else are untouched).
hideForUser: (messageId, userId) => db.prepare('INSERT INTO message_hidden (message_id,user_id,hidden_at) VALUES (?,?,?) ON CONFLICT(message_id,user_id) DO NOTHING').run(messageId, userId, now()),
hiddenForUser: async (userId) => (await db.prepare('SELECT message_id FROM message_hidden WHERE user_id=?').all(userId)).map((r) => r.message_id),
// Last message in a group that THIS user hasn't hidden (so a "delete for me" on the last message
// rolls the sidebar preview back to the previous one, instead of showing what they just removed).
lastInConversationForUser: (conversationId, userId) => db.prepare('SELECT * FROM messages WHERE conversation_id=? AND id NOT IN (SELECT message_id FROM message_hidden WHERE user_id=?) ORDER BY created_at DESC LIMIT 1').get(conversationId, userId),
// Shared media/files in a conversation (group) or DM — newest first.
attachmentsForConversation: (teamId, conversationId) => db.prepare(`SELECT a.id, a.name, a.mime, a.size, m.created_at FROM messages m JOIN attachments a ON a.id=m.attachment_id WHERE m.team_id=? AND m.conversation_id=? AND m.deleted=0 ORDER BY m.created_at DESC`).all(teamId, conversationId),
attachmentsForDm: (teamId, a, b) => db.prepare(`SELECT at.id, at.name, at.mime, at.size, m.created_at FROM messages m JOIN attachments at ON at.id=m.attachment_id WHERE m.team_id=? AND m.conversation_id IS NULL AND ((m.sender_id=? AND m.recipient_id=?) OR (m.sender_id=? AND m.recipient_id=?)) AND m.deleted=0 ORDER BY m.created_at DESC`).all(teamId, a, b, b, a),