Added My Schedule tab in attendance screen

Allow 1 Day, Whole Week and Date Range swapping
2026-03-22 11:52:25 +08:00
parent ba155885c0
commit 049ab2c794
17 changed files with 2515 additions and 305 deletions
@@ -0,0 +1,117 @@
+-- Fix respond_shift_swap:
+--   1. Guard against double-processing (idempotent — return early if already terminal)
+--   2. SECURITY DEFINER to bypass RLS for cross-user duty_schedule ownership checks
+--      (the function still enforces caller identity via auth.uid())
+
+CREATE OR REPLACE FUNCTION public.respond_shift_swap(p_swap_id uuid, p_action text)
+RETURNS void LANGUAGE plpgsql SECURITY DEFINER SET search_path = public AS $$
+DECLARE
+  v_swap RECORD;
+BEGIN
+  SELECT * INTO v_swap FROM public.swap_requests WHERE id = p_swap_id;
+  IF NOT FOUND THEN
+    RAISE EXCEPTION 'swap request not found';
+  END IF;
+
+  IF p_action NOT IN ('accepted','rejected','admin_review') THEN
+    RAISE EXCEPTION 'invalid action';
+  END IF;
+
+  -- Idempotency guard: already in terminal state → nothing more to do.
+  -- This prevents spurious "ownership changed" errors when a stale UI retries
+  -- an acceptance that was already processed on another device or by an admin.
+  IF v_swap.status IN ('accepted', 'rejected') THEN
+    RETURN;
+  END IF;
+
+  IF p_action = 'accepted' THEN
+    -- only recipient or admin/dispatcher can accept
+    IF NOT (
+      v_swap.recipient_id = auth.uid()
+      OR EXISTS (SELECT 1 FROM public.profiles p WHERE p.id = auth.uid() AND p.role IN ('admin','dispatcher'))
+    ) THEN
+      RAISE EXCEPTION 'permission denied';
+    END IF;
+
+    -- ensure both shifts are still owned by the expected users before swapping
+    IF NOT EXISTS (SELECT 1 FROM public.duty_schedules WHERE id = v_swap.shift_id AND user_id = v_swap.requester_id) THEN
+      RAISE EXCEPTION 'requester shift ownership changed, cannot accept swap';
+    END IF;
+    IF v_swap.target_shift_id IS NULL THEN
+      RAISE EXCEPTION 'target shift missing';
+    END IF;
+    IF NOT EXISTS (SELECT 1 FROM public.duty_schedules WHERE id = v_swap.target_shift_id AND user_id = v_swap.recipient_id) THEN
+      RAISE EXCEPTION 'target shift ownership changed, cannot accept swap';
+    END IF;
+
+    -- perform the swap (atomic within function) and stamp swap_request_id
+    UPDATE public.duty_schedules
+    SET user_id = v_swap.recipient_id, swap_request_id = p_swap_id
+    WHERE id = v_swap.shift_id;
+
+    UPDATE public.duty_schedules
+    SET user_id = v_swap.requester_id, swap_request_id = p_swap_id
+    WHERE id = v_swap.target_shift_id;
+
+    UPDATE public.swap_requests
+    SET status = 'accepted', updated_at = now()
+    WHERE id = p_swap_id;
+
+    INSERT INTO public.swap_request_participants(swap_request_id, user_id, role)
+    VALUES (p_swap_id, auth.uid(), 'approver')
+    ON CONFLICT DO NOTHING;
+
+    INSERT INTO public.notifications(user_id, actor_id, type, created_at)
+    VALUES (v_swap.requester_id, auth.uid(), 'swap_update', now());
+
+  ELSIF p_action = 'rejected' THEN
+    -- only recipient or admin/dispatcher can reject
+    IF NOT (
+      v_swap.recipient_id = auth.uid()
+      OR EXISTS (SELECT 1 FROM public.profiles p WHERE p.id = auth.uid() AND p.role IN ('admin','dispatcher'))
+    ) THEN
+      RAISE EXCEPTION 'permission denied';
+    END IF;
+
+    UPDATE public.swap_requests
+    SET status = 'rejected', updated_at = now()
+    WHERE id = p_swap_id;
+
+    INSERT INTO public.swap_request_participants(swap_request_id, user_id, role)
+    VALUES (p_swap_id, auth.uid(), 'approver')
+    ON CONFLICT DO NOTHING;
+
+    INSERT INTO public.notifications(user_id, actor_id, type, created_at)
+    VALUES (v_swap.requester_id, auth.uid(), 'swap_update', now());
+
+  ELSE -- admin_review
+    -- only requester may escalate for admin review
+    IF NOT (v_swap.requester_id = auth.uid()) THEN
+      RAISE EXCEPTION 'permission denied';
+    END IF;
+
+    UPDATE public.swap_requests
+    SET status = 'admin_review', updated_at = now()
+    WHERE id = p_swap_id;
+
+    INSERT INTO public.notifications(user_id, actor_id, type, created_at)
+    VALUES (v_swap.requester_id, auth.uid(), 'swap_update', now());
+  END IF;
+END;
+$$;
+
+-- Re-grant EXECUTE to authenticated users.
+-- SECURITY DEFINER functions drop existing grants on replace, so this must
+-- be explicit.
+GRANT EXECUTE ON FUNCTION public.respond_shift_swap(uuid, text) TO authenticated;
+
+-- Enable full replica identity so UPDATE events include all columns,
+-- and add to the realtime publication so .stream() receives changes.
+-- Without this, the Flutter client never sees status transitions (e.g.
+-- pending → accepted) via Supabase Realtime — only the initial REST fetch.
+ALTER TABLE public.swap_requests REPLICA IDENTITY FULL;
+DO $$ BEGIN
+  ALTER PUBLICATION supabase_realtime ADD TABLE public.swap_requests;
+EXCEPTION WHEN duplicate_object THEN
+  NULL; -- already present
+END $$;