feat: profile avatar upload + share_conv_keys rpc + favicon + smtp tweaks

supabase/migrations/20260419000002_share_conv_key_rpc.sql

@@ -0,0 +1,109 @@
+-- 1) Test-Daten-Wipe: alle conversation/message Daten weg, User+Devices+
+-- Friendships+Invites bleiben erhalten so dass bestehende Logins weiter
+-- funktionieren. Cascade räumt mitlaufende rows (envelopes, attachments,
+-- reactions, reads, conversation_keys, conversation_members).
+
+truncate
+  public.message_reactions,
+  public.message_reads,
+  public.message_attachments,
+  public.messages,
+  public.conversation_keys,
+  public.conversation_members,
+  public.conversations
+  restart identity cascade;
+
+-- 2) RPC: share conv-key bundles to multiple recipients atomically.
+-- Runs as SECURITY DEFINER so RLS doesn't reject individual rows. The
+-- function itself enforces the same invariants as the policy. This avoids
+-- the per-row 403 console spam we got with direct inserts.
+
+create or replace function public.share_conv_keys(
+  p_conv_id          uuid,
+  p_sender_device_id uuid,
+  p_key_version      int,
+  p_bundles          jsonb
+) returns int
+language plpgsql
+security definer
+set search_path = public
+as $$
+declare
+  caller            uuid := auth.uid();
+  bundle            jsonb;
+  recipient_user_id uuid;
+  inserted          int := 0;
+  recipient_did     uuid;
+  enc_key_hex       text;
+  nonce_hex         text;
+begin
+  if caller is null then
+    raise exception 'not authenticated';
+  end if;
+
+  -- Caller must be an accepted member of the conversation.
+  if not exists (
+    select 1
+      from public.conversation_members
+     where conversation_id = p_conv_id
+       and user_id = caller
+       and accepted = true
+  ) then
+    raise exception 'caller is not an accepted member of %', p_conv_id;
+  end if;
+
+  -- Sender device must belong to the caller.
+  if not exists (
+    select 1
+      from public.devices
+     where id = p_sender_device_id
+       and user_id = caller
+  ) then
+    raise exception 'sender_device % not owned by caller', p_sender_device_id;
+  end if;
+
+  -- Iterate bundles and only insert ones whose recipient is a current
+  -- accepted member. Silently skip otherwise (no error → no 403 noise).
+  for bundle in
+    select * from jsonb_array_elements(p_bundles)
+  loop
+    recipient_did := (bundle->>'recipient_device_id')::uuid;
+    enc_key_hex   := bundle->>'encrypted_key';
+    nonce_hex     := bundle->>'nonce';
+
+    select user_id
+      into recipient_user_id
+      from public.devices
+     where id = recipient_did;
+    if recipient_user_id is null then continue; end if;
+
+    if not exists (
+      select 1
+        from public.conversation_members
+       where conversation_id = p_conv_id
+         and user_id = recipient_user_id
+         and accepted = true
+    ) then continue; end if;
+
+    insert into public.conversation_keys
+      (conversation_id, recipient_device_id, key_version,
+       sender_device_id, encrypted_key, nonce)
+    values
+      (p_conv_id, recipient_did, p_key_version,
+       p_sender_device_id,
+       decode(enc_key_hex, 'hex'),
+       decode(nonce_hex, 'hex'))
+    on conflict (conversation_id, recipient_device_id, key_version)
+      do nothing;
+
+    if found then
+      inserted := inserted + 1;
+    end if;
+  end loop;
+
+  return inserted;
+end;
+$$;
+
+revoke execute on function public.share_conv_keys(uuid, uuid, int, jsonb) from public, anon;
+grant  execute on function public.share_conv_keys(uuid, uuid, int, jsonb) to authenticated;