feat: KitchenStock light UI, Gemma 31B AI, supermarket store filters & 130+ vegan products

2026-07-27 12:25:30 +02:00 · 2026-07-26 20:08:16 +02:00
commit 83fcf6909c
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+-- Migration 00003: Transactional Stock Adjustment RPC (adjust_product_stock with FEFO)
+
+CREATE OR REPLACE FUNCTION public.adjust_product_stock(
+    p_household_id UUID,
+    p_product_id UUID,
+    p_quantity_change NUMERIC,
+    p_reason public.stock_movement_reason,
+    p_batch_id UUID DEFAULT NULL,
+    p_note TEXT DEFAULT NULL
+)
+RETURNS NUMERIC
+LANGUAGE plpgsql
+SECURITY DEFINER
+SET search_path = public
+AS $$
+DECLARE
+    v_user_id UUID;
+    v_total_before NUMERIC := 0.0;
+    v_total_after NUMERIC := 0.0;
+    v_target_batch RECORD;
+    v_remaining_to_deduct NUMERIC;
+    v_deduct_amount NUMERIC;
+BEGIN
+    v_user_id := auth.uid();
+
+    -- 1. Check permissions
+    IF NOT public.has_household_role(p_household_id, ARRAY['MEMBER', 'ADMIN', 'OWNER']::public.household_role[]) THEN
+        RAISE EXCEPTION 'PERMISSION_DENIED: User is not authorized to modify stock in household %', p_household_id;
+    END IF;
+
+    -- 2. Lock product and calculate current total stock
+    PERFORM 1 FROM public.products WHERE id = p_product_id AND household_id = p_household_id FOR UPDATE;
+    
+    SELECT COALESCE(SUM(quantity), 0.0) INTO v_total_before
+    FROM public.inventory_batches
+    WHERE household_id = p_household_id AND product_id = p_product_id;
+
+    -- 3. Check for negative stock
+    IF (v_total_before + p_quantity_change) < 0 THEN
+        RAISE EXCEPTION 'INSUFFICIENT_STOCK: Required quantity reduction exceeds current total stock (%)', v_total_before;
+    END IF;
+
+    -- 4. Apply changes
+    IF p_batch_id IS NOT NULL THEN
+        -- Target specific batch
+        SELECT * INTO v_target_batch
+        FROM public.inventory_batches
+        WHERE id = p_batch_id AND product_id = p_product_id AND household_id = p_household_id
+        FOR UPDATE;
+
+        IF NOT FOUND THEN
+            RAISE EXCEPTION 'BATCH_NOT_FOUND: Specified batch % does not exist', p_batch_id;
+        END IF;
+
+        IF (v_target_batch.quantity + p_quantity_change) < 0 THEN
+            RAISE EXCEPTION 'INSUFFICIENT_BATCH_STOCK: Batch quantity cannot be reduced below 0';
+        END IF;
+
+        UPDATE public.inventory_batches
+        SET quantity = quantity + p_quantity_change,
+            updated_at = NOW()
+        WHERE id = p_batch_id;
+
+    ELSE
+        -- No explicit batch provided
+        IF p_quantity_change > 0 THEN
+            -- Increase stock: Add to default batch (batch without expiration_date or newest) or create new batch
+            SELECT id INTO p_batch_id
+            FROM public.inventory_batches
+            WHERE household_id = p_household_id 
+              AND product_id = p_product_id
+              AND expiration_date IS NULL
+            ORDER BY created_at DESC
+            LIMIT 1;
+
+            IF p_batch_id IS NOT NULL THEN
+                UPDATE public.inventory_batches
+                SET quantity = quantity + p_quantity_change,
+                    updated_at = NOW()
+                WHERE id = p_batch_id;
+            ELSE
+                INSERT INTO public.inventory_batches (household_id, product_id, quantity)
+                VALUES (p_household_id, p_product_id, p_quantity_change)
+                RETURNING id INTO p_batch_id;
+            END IF;
+
+        ELSIF p_quantity_change < 0 THEN
+            -- FEFO Deduction (First Expire, First Out)
+            v_remaining_to_deduct := ABS(p_quantity_change);
+
+            FOR v_target_batch IN
+                SELECT id, quantity
+                FROM public.inventory_batches
+                WHERE household_id = p_household_id
+                  AND product_id = p_product_id
+                  AND quantity > 0
+                ORDER BY 
+                  expiration_date ASC NULLS LAST,
+                  created_at ASC
+                FOR UPDATE
+            LOOP
+                IF v_remaining_to_deduct <= 0 THEN
+                    EXIT;
+                END IF;
+
+                v_deduct_amount := LEAST(v_target_batch.quantity, v_remaining_to_deduct);
+
+                UPDATE public.inventory_batches
+                SET quantity = quantity - v_deduct_amount,
+                    updated_at = NOW()
+                WHERE id = v_target_batch.id;
+
+                v_remaining_to_deduct := v_remaining_to_deduct - v_deduct_amount;
+            END LOOP;
+        END IF;
+    END IF;
+
+    -- 5. Calculate new total stock
+    SELECT COALESCE(SUM(quantity), 0.0) INTO v_total_after
+    FROM public.inventory_batches
+    WHERE household_id = p_household_id AND product_id = p_product_id;
+
+    -- 6. Insert stock_movements record
+    INSERT INTO public.stock_movements (
+        household_id,
+        product_id,
+        batch_id,
+        quantity_before,
+        quantity_change,
+        quantity_after,
+        reason,
+        note,
+        created_by
+    ) VALUES (
+        p_household_id,
+        p_product_id,
+        p_batch_id,
+        v_total_before,
+        p_quantity_change,
+        v_total_after,
+        p_reason,
+        p_note,
+        v_user_id
+    );
+
+    RETURN v_total_after;
+END;
+$$;