Swap Accept, Reject and Escalate

supabase/migrations/20260219120000_swap_requests_snapshot.sql

@@ -0,0 +1,51 @@
+-- Add shift snapshot columns to swap_requests and update request_shift_swap RPC
+
+ALTER TABLE public.swap_requests
+  ADD COLUMN IF NOT EXISTS shift_type text;
+
+ALTER TABLE public.swap_requests
+  ADD COLUMN IF NOT EXISTS shift_start_time timestamptz;
+
+ALTER TABLE public.swap_requests
+  ADD COLUMN IF NOT EXISTS reliever_ids uuid[] DEFAULT '{}'::uuid[];
+
+-- Update the request_shift_swap RPC so inserted swap_requests include a snapshot
+-- of the referenced duty schedule (so UI can render shift info even after ownership changes)
+CREATE OR REPLACE FUNCTION public.request_shift_swap(p_shift_id uuid, p_recipient_id uuid)
+RETURNS uuid LANGUAGE plpgsql AS $$
+DECLARE
+  v_shift_record RECORD;
+  v_recipient RECORD;
+  v_new_id uuid;
+BEGIN
+  -- shift must exist and be owned by caller
+  SELECT * INTO v_shift_record FROM public.duty_schedules WHERE id = p_shift_id;
+  IF NOT FOUND THEN
+    RAISE EXCEPTION 'shift not found';
+  END IF;
+  IF v_shift_record.user_id <> auth.uid() THEN
+    RAISE EXCEPTION 'permission denied: only shift owner may request swap';
+  END IF;
+
+  -- recipient must exist and be it_staff
+  SELECT id, role INTO v_recipient FROM public.profiles WHERE id = p_recipient_id;
+  IF NOT FOUND THEN
+    RAISE EXCEPTION 'recipient not found';
+  END IF;
+  IF v_recipient.role <> 'it_staff' THEN
+    RAISE EXCEPTION 'recipient must be it_staff';
+  END IF;
+
+  INSERT INTO public.swap_requests(
+      requester_id, recipient_id, shift_id, status, created_at, updated_at,
+      shift_type, shift_start_time, reliever_ids
+  )
+  VALUES (
+    auth.uid(), p_recipient_id, p_shift_id, 'pending', now(), now(),
+    v_shift_record.shift_type, v_shift_record.start_time, v_shift_record.reliever_ids
+  )
+  RETURNING id INTO v_new_id;
+
+  RETURN v_new_id;
+END;
+$$;