feat(recipes): add C6 day-picker flow — week plan load + slot actions + DayPicker sheet

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/lib/recipes/RecipeGrid.svelte

@@ -2,13 +2,13 @@
 	import RecipeCard from './RecipeCard.svelte';
 	import type { RecipeSummary } from './types';
 
-	let { recipes }: { recipes: RecipeSummary[] } = $props();
+	let { recipes, onplan }: { recipes: RecipeSummary[]; onplan?: (recipeId: string, recipeName: string) => void } = $props();
 </script>
 
 {#if recipes.length > 0}
 	<div data-testid="recipe-grid" class="grid grid-cols-2 lg:grid-cols-4 gap-[8px] lg:gap-[12px] p-[16px]">
 		{#each recipes as recipe (recipe.id)}
-			<RecipeCard {recipe} compact={true} />
+			<RecipeCard {recipe} compact={true} {onplan} />
 		{/each}
 	</div>
 {:else}

frontend/src/routes/(app)/recipes/+page.server.ts

@@ -1,21 +1,77 @@
-import type { PageServerLoad } from './$types';
+import type { PageServerLoad, Actions } from './$types';
 import { apiClient } from '$lib/server/api';
+import { getWeekStart } from '$lib/planner/week';
 
 export const load: PageServerLoad = async ({ fetch }) => {
 	const api = apiClient(fetch);
-	const { data, error } = await api.GET('/v1/recipes', {});
+	const weekStart = getWeekStart(new Date());
 
-	if (error || !data?.data) {
-		return { recipes: [] };
-	}
+	const [recipesResult, weekPlanResult] = await Promise.all([
+		api.GET('/v1/recipes', {}),
+		api.GET('/v1/week-plans', { params: { query: { weekStart } } })
+	]);
 
-	return {
-		recipes: data.data.map((r) => ({
-			id: r.id!,
-			name: r.name!,
-			cookTimeMin: r.cookTimeMin,
-			effort: r.effort,
-			heroImageUrl: r.heroImageUrl
-		}))
-	};
+	const recipes =
+		recipesResult.error || !recipesResult.data?.data
+			? []
+			: recipesResult.data.data.map((r) => ({
+					id: r.id!,
+					name: r.name!,
+					cookTimeMin: r.cookTimeMin,
+					effort: r.effort,
+					heroImageUrl: r.heroImageUrl
+				}));
+
+	const activePlan =
+		weekPlanResult.error || !weekPlanResult.data?.id ? null : weekPlanResult.data;
+
+	return { recipes, activePlan };
+};
+
+export const actions: Actions = {
+	addSlot: async ({ fetch, request }) => {
+		const formData = await request.formData();
+		const planId = formData.get('planId') as string;
+		const slotDate = formData.get('slotDate') as string;
+		const recipeId = formData.get('recipeId') as string;
+
+		const api = apiClient(fetch);
+		const { data, error } = await api.POST('/v1/week-plans/{id}/slots', {
+			params: { path: { id: planId } },
+			body: { slotDate, recipeId }
+		});
+
+		if (error || !data) return { success: false };
+		return { success: true, slot: data };
+	},
+
+	updateSlot: async ({ fetch, request }) => {
+		const formData = await request.formData();
+		const planId = formData.get('planId') as string;
+		const slotId = formData.get('slotId') as string;
+		const recipeId = formData.get('recipeId') as string;
+
+		const api = apiClient(fetch);
+		const { data, error } = await api.PATCH('/v1/week-plans/{planId}/slots/{slotId}', {
+			params: { path: { planId, slotId } },
+			body: { recipeId }
+		});
+
+		if (error || !data) return { success: false };
+		return { success: true, slot: data };
+	},
+
+	deleteSlot: async ({ fetch, request }) => {
+		const formData = await request.formData();
+		const planId = formData.get('planId') as string;
+		const slotId = formData.get('slotId') as string;
+
+		const api = apiClient(fetch);
+		const { error } = await api.DELETE('/v1/week-plans/{planId}/slots/{slotId}', {
+			params: { path: { planId, slotId } }
+		});
+
+		if (error) return { success: false };
+		return { success: true };
+	}
 };

frontend/src/routes/(app)/recipes/+page.svelte

@@ -1,10 +1,18 @@
 <script lang="ts">
+	import { enhance } from '$app/forms';
+	import { invalidateAll } from '$app/navigation';
+	import { tick } from 'svelte';
 	import FilterChipRow from '$lib/recipes/FilterChipRow.svelte';
 	import RecipeGrid from '$lib/recipes/RecipeGrid.svelte';
 	import type { RecipeSummary } from '$lib/recipes/types';
+	import DayPicker from '$lib/planner/DayPicker.svelte';
+	import BottomSheet from '$lib/components/BottomSheet.svelte';
+	import UndoBar from '$lib/planner/UndoBar.svelte';
 
-	let { data }: { data: { recipes: RecipeSummary[] } } = $props();
+	let { data, form = null }: { data: { recipes: RecipeSummary[]; activePlan: any }; form?: any } =
+		$props();
 
+	// ── Search / filter ──────────────────────────────────────────────────────
 	let searchQuery = $state('');
 	let activeFilter = $state('Alle');
 
@@ -22,6 +30,77 @@
 			})
 			.filter((r) => r.name.toLowerCase().includes(searchQuery.toLowerCase()))
 	);
+
+	// ── Today (computed once at module level) ─────────────────────────────────
+	const today = new Date().toISOString().slice(0, 10);
+
+	// ── DayPicker / BottomSheet state ─────────────────────────────────────────
+	let pickerOpen = $state(false);
+	let pickerRecipeId = $state('');
+	let pickerRecipeName = $state('');
+	let pickerPlan = $state<any>(null);
+	let pickerWeekStart = $state('');
+
+	// ── Undo bar state ────────────────────────────────────────────────────────
+	let undoVisible = $state(false);
+	let undoMessage = $state('');
+	let undoPlanId = $state('');
+	let undoSlotId = $state('');
+
+	// ── Hidden form field state ───────────────────────────────────────────────
+	let addPlanId = $state('');
+	let addSlotDate = $state('');
+	let addRecipeId = $state('');
+	let updPlanId = $state('');
+	let updSlotId = $state('');
+	let updRecipeId = $state('');
+
+	// ── Form element refs ─────────────────────────────────────────────────────
+	let addSlotFormEl: HTMLFormElement;
+	let updateSlotFormEl: HTMLFormElement;
+	let deleteSlotFormEl: HTMLFormElement;
+
+	// ── Handlers ──────────────────────────────────────────────────────────────
+	function openDayPicker(recipeId: string, recipeName: string) {
+		if (!data.activePlan) return;
+		pickerRecipeId = recipeId;
+		pickerRecipeName = recipeName;
+		pickerPlan = data.activePlan;
+		pickerWeekStart = data.activePlan.weekStart;
+		pickerOpen = true;
+	}
+
+	async function handleWeekChange(newWeekStart: string) {
+		const res = await fetch(`/recipes?week=${newWeekStart}`);
+		const { plan } = await res.json();
+		pickerPlan = plan;
+		pickerWeekStart = newWeekStart;
+	}
+
+	async function handleDayPickerConfirm({ date, slotId }: { date: string; slotId: string | null }) {
+		pickerOpen = false;
+
+		if (slotId) {
+			// Replace existing slot
+			updPlanId = pickerPlan?.id ?? '';
+			updSlotId = slotId;
+			updRecipeId = pickerRecipeId;
+			await tick();
+			updateSlotFormEl.requestSubmit();
+		} else {
+			// Add to empty slot
+			addPlanId = pickerPlan?.id ?? '';
+			addSlotDate = date;
+			addRecipeId = pickerRecipeId;
+			await tick();
+			addSlotFormEl.requestSubmit();
+		}
+	}
+
+	function handleUndo() {
+		undoVisible = false;
+		deleteSlotFormEl.requestSubmit();
+	}
 </script>
 
 <svelte:head>
@@ -30,18 +109,116 @@
 
 <div class="p-6 space-y-4">
 	<div class="flex items-center justify-between">
-		<h1 class="font-[var(--font-display)] text-[28px] font-medium text-[var(--color-text)]">Rezepte</h1>
-		<a href="/recipes/new" class="font-sans text-[13px] font-medium tracking-[0.04em] rounded-[var(--radius-md)] bg-[var(--green-dark)] px-[24px] py-[12px] text-white">Rezept hinzufügen</a>
+		<h1 class="font-[var(--font-display)] text-[28px] font-medium text-[var(--color-text)]">
+			Rezepte
+		</h1>
+		<a
+			href="/recipes/new"
+			class="font-sans text-[13px] font-medium tracking-[0.04em] rounded-[var(--radius-md)] bg-[var(--green-dark)] px-[24px] py-[12px] text-white"
+		>
+			Rezept hinzufügen
+		</a>
 	</div>
 
-	<input
-		type="search"
-		placeholder="Suchen…"
-		class="input"
-		bind:value={searchQuery}
-	/>
+	<input type="search" placeholder="Suchen…" class="input" bind:value={searchQuery} />
 
 	<FilterChipRow {activeFilter} onFilter={(f) => (activeFilter = f)} />
 
-	<RecipeGrid recipes={filteredRecipes} />
+	<RecipeGrid
+		recipes={filteredRecipes}
+		onplan={data.activePlan ? openDayPicker : undefined}
+	/>
 </div>
+
+<BottomSheet open={pickerOpen} onclose={() => (pickerOpen = false)} height="55vh">
+	{#if pickerPlan}
+		<DayPicker
+			recipeName={pickerRecipeName}
+			recipeId={pickerRecipeId}
+			planId={pickerPlan?.id ?? ''}
+			weekStart={pickerWeekStart}
+			{today}
+			slots={pickerPlan?.slots ?? []}
+			onconfirm={handleDayPickerConfirm}
+			onweekchange={handleWeekChange}
+		/>
+	{/if}
+</BottomSheet>
+
+<UndoBar
+	visible={undoVisible}
+	message={undoMessage}
+	onundo={handleUndo}
+	ondismiss={() => (undoVisible = false)}
+/>
+
+<!-- Hidden forms for slot mutations -->
+<form
+	bind:this={addSlotFormEl}
+	method="POST"
+	action="?/addSlot"
+	class="hidden"
+	use:enhance={({ formData }) => {
+		formData.set('planId', addPlanId);
+		formData.set('slotDate', addSlotDate);
+		formData.set('recipeId', addRecipeId);
+		return async ({ result, update }) => {
+			if (result.type === 'success') {
+				undoPlanId = addPlanId;
+				undoSlotId = (result.data as any)?.slot?.id ?? '';
+				undoMessage = `${pickerRecipeName} hinzugefügt`;
+				undoVisible = true;
+				await invalidateAll();
+			}
+			await update({ reset: false });
+		};
+	}}
+>
+	<input type="hidden" name="planId" value={addPlanId} />
+	<input type="hidden" name="slotDate" value={addSlotDate} />
+	<input type="hidden" name="recipeId" value={addRecipeId} />
+</form>
+
+<form
+	bind:this={updateSlotFormEl}
+	method="POST"
+	action="?/updateSlot"
+	class="hidden"
+	use:enhance={({ formData }) => {
+		formData.set('planId', updPlanId);
+		formData.set('slotId', updSlotId);
+		formData.set('recipeId', updRecipeId);
+		return async ({ result, update }) => {
+			if (result.type === 'success') {
+				undoPlanId = updPlanId;
+				undoSlotId = (result.data as any)?.slot?.id ?? '';
+				undoMessage = `${pickerRecipeName} hinzugefügt`;
+				undoVisible = true;
+				await invalidateAll();
+			}
+			await update({ reset: false });
+		};
+	}}
+>
+	<input type="hidden" name="planId" value={updPlanId} />
+	<input type="hidden" name="slotId" value={updSlotId} />
+	<input type="hidden" name="recipeId" value={updRecipeId} />
+</form>
+
+<form
+	bind:this={deleteSlotFormEl}
+	method="POST"
+	action="?/deleteSlot"
+	class="hidden"
+	use:enhance={({ formData }) => {
+		formData.set('planId', undoPlanId);
+		formData.set('slotId', undoSlotId);
+		return async ({ update }) => {
+			await invalidateAll();
+			await update({ reset: false });
+		};
+	}}
+>
+	<input type="hidden" name="planId" value={undoPlanId} />
+	<input type="hidden" name="slotId" value={undoSlotId} />
+</form>

frontend/src/routes/(app)/recipes/+server.ts

@@ -0,0 +1,17 @@
+import { json } from '@sveltejs/kit';
+import type { RequestHandler } from './$types';
+import { apiClient } from '$lib/server/api';
+
+// GET /recipes?week=YYYY-MM-DD — returns week plan for DayPicker week navigation
+export const GET: RequestHandler = async ({ fetch, url }) => {
+	const weekStart = url.searchParams.get('week');
+	if (!weekStart) return json({ plan: null });
+
+	const api = apiClient(fetch);
+	const { data, error } = await api.GET('/v1/week-plans', {
+		params: { query: { weekStart } }
+	});
+
+	if (error || !data?.id) return json({ plan: null });
+	return json({ plan: data });
+};

frontend/src/routes/(app)/recipes/page.server.test.ts

@@ -5,8 +5,15 @@ vi.mock('$env/dynamic/private', () => ({
 }));
 
 const mockGet = vi.fn();
+const mockPost = vi.fn();
+const mockPatch = vi.fn();
+const mockDelete = vi.fn();
 vi.mock('$lib/server/api', () => ({
-	apiClient: () => ({ GET: mockGet })
+	apiClient: () => ({ GET: mockGet, POST: mockPost, PATCH: mockPatch, DELETE: mockDelete })
+}));
+
+vi.mock('$lib/planner/week', () => ({
+	getWeekStart: () => '2026-04-07'
 }));
 
 describe('recipe library page — load', () => {
@@ -24,22 +31,144 @@ describe('recipe library page — load', () => {
 		{ id: 'r2', name: 'Curry', cookTimeMin: 45, effort: 'Medium' }
 	];
 
+	const mockWeekPlan = {
+		id: 'plan-1',
+		weekStart: '2026-04-07',
+		slots: [{ id: 's1', slotDate: '2026-04-07', recipe: { id: 'r1', name: 'Pasta', effort: 'easy' } }]
+	};
+
 	it('fetches recipes from GET /v1/recipes', async () => {
-		mockGet.mockResolvedValue({ data: { data: mockRecipes }, error: undefined });
+		mockGet
+			.mockResolvedValueOnce({ data: { data: mockRecipes }, error: undefined })
+			.mockResolvedValueOnce({ data: mockWeekPlan, error: undefined });
 		await load({ fetch: vi.fn() } as any);
 		expect(mockGet).toHaveBeenCalledWith('/v1/recipes', expect.any(Object));
 	});
 
 	it('returns recipes in data', async () => {
-		mockGet.mockResolvedValue({ data: { data: mockRecipes }, error: undefined });
+		mockGet
+			.mockResolvedValueOnce({ data: { data: mockRecipes }, error: undefined })
+			.mockResolvedValueOnce({ data: mockWeekPlan, error: undefined });
 		const result = await load({ fetch: vi.fn() } as any);
 		expect(result.recipes).toHaveLength(2);
 		expect(result.recipes[0].name).toBe('Spaghetti');
 	});
 
-	it('returns empty array when API fails', async () => {
-		mockGet.mockResolvedValue({ data: undefined, error: { status: 500 } });
+	it('returns empty array when recipes API fails', async () => {
+		mockGet
+			.mockResolvedValueOnce({ data: undefined, error: { status: 500 } })
+			.mockResolvedValueOnce({ data: mockWeekPlan, error: undefined });
 		const result = await load({ fetch: vi.fn() } as any);
 		expect(result.recipes).toEqual([]);
 	});
+
+	it('fetches active week plan from GET /v1/week-plans', async () => {
+		mockGet
+			.mockResolvedValueOnce({ data: { data: mockRecipes }, error: undefined })
+			.mockResolvedValueOnce({ data: mockWeekPlan, error: undefined });
+		await load({ fetch: vi.fn() } as any);
+		expect(mockGet).toHaveBeenCalledWith('/v1/week-plans', expect.any(Object));
+	});
+
+	it('returns activePlan with id and slots in data', async () => {
+		mockGet
+			.mockResolvedValueOnce({ data: { data: mockRecipes }, error: undefined })
+			.mockResolvedValueOnce({ data: mockWeekPlan, error: undefined });
+		const result = await load({ fetch: vi.fn() } as any);
+		expect(result.activePlan.id).toBe('plan-1');
+		expect(result.activePlan.slots).toHaveLength(1);
+	});
+
+	it('returns null activePlan when week plan API fails', async () => {
+		mockGet
+			.mockResolvedValueOnce({ data: { data: mockRecipes }, error: undefined })
+			.mockResolvedValueOnce({ data: undefined, error: { status: 404 } });
+		const result = await load({ fetch: vi.fn() } as any);
+		expect(result.activePlan).toBeNull();
+	});
+});
+
+describe('recipe library page — actions', () => {
+	let actions: any;
+
+	beforeEach(async () => {
+		mockGet.mockReset();
+		mockPost.mockReset();
+		mockPatch.mockReset();
+		mockDelete.mockReset();
+		vi.resetModules();
+		const mod = await import('./+page.server');
+		actions = mod.actions;
+	});
+
+	it('addSlot calls POST /v1/week-plans/{id}/slots and returns success', async () => {
+		const formData = new FormData();
+		formData.set('planId', 'plan-1');
+		formData.set('slotDate', '2026-04-01');
+		formData.set('recipeId', 'r1');
+		mockPost.mockResolvedValue({ data: { id: 's1' }, error: undefined });
+		const result = await actions.addSlot({
+			fetch: vi.fn(),
+			request: { formData: async () => formData }
+		} as any);
+		expect(mockPost).toHaveBeenCalledWith(
+			'/v1/week-plans/{id}/slots',
+			expect.objectContaining({
+				params: { path: { id: 'plan-1' } },
+				body: { slotDate: '2026-04-01', recipeId: 'r1' }
+			})
+		);
+		expect(result.success).toBe(true);
+	});
+
+	it('addSlot returns error when API fails', async () => {
+		const formData = new FormData();
+		formData.set('planId', 'plan-1');
+		formData.set('slotDate', '2026-04-01');
+		formData.set('recipeId', 'r1');
+		mockPost.mockResolvedValue({ data: undefined, error: { status: 500 } });
+		const result = await actions.addSlot({
+			fetch: vi.fn(),
+			request: { formData: async () => formData }
+		} as any);
+		expect(result.success).toBe(false);
+	});
+
+	it('updateSlot calls PATCH /v1/week-plans/{planId}/slots/{slotId} and returns success', async () => {
+		const formData = new FormData();
+		formData.set('planId', 'plan-1');
+		formData.set('slotId', 's1');
+		formData.set('recipeId', 'r1');
+		mockPatch.mockResolvedValue({ data: { id: 's1' }, error: undefined });
+		const result = await actions.updateSlot({
+			fetch: vi.fn(),
+			request: { formData: async () => formData }
+		} as any);
+		expect(mockPatch).toHaveBeenCalledWith(
+			'/v1/week-plans/{planId}/slots/{slotId}',
+			expect.objectContaining({
+				params: { path: { planId: 'plan-1', slotId: 's1' } },
+				body: { recipeId: 'r1' }
+			})
+		);
+		expect(result.success).toBe(true);
+	});
+
+	it('deleteSlot calls DELETE /v1/week-plans/{planId}/slots/{slotId} and returns success', async () => {
+		const formData = new FormData();
+		formData.set('planId', 'plan-1');
+		formData.set('slotId', 's1');
+		mockDelete.mockResolvedValue({ error: undefined });
+		const result = await actions.deleteSlot({
+			fetch: vi.fn(),
+			request: { formData: async () => formData }
+		} as any);
+		expect(mockDelete).toHaveBeenCalledWith(
+			'/v1/week-plans/{planId}/slots/{slotId}',
+			expect.objectContaining({
+				params: { path: { planId: 'plan-1', slotId: 's1' } }
+			})
+		);
+		expect(result.success).toBe(true);
+	});
 });

frontend/src/routes/(app)/recipes/page.test.ts

@@ -8,7 +8,8 @@ const mockData = {
 		{ id: 'r1', name: 'Spaghetti Bolognese', cookTimeMin: 30, effort: 'Easy' },
 		{ id: 'r2', name: 'Chicken Curry', cookTimeMin: 45, effort: 'Medium' },
 		{ id: 'r3', name: 'Gemüsesuppe', cookTimeMin: 20, effort: 'Easy' }
-	]
+	],
+	activePlan: null
 };
 
 describe('recipe library page', () => {
@@ -68,7 +69,7 @@ describe('recipe library page', () => {
 	});
 
 	it('renders empty state page when no recipes at all', () => {
-		render(Page, { props: { data: { recipes: [] } } });
+		render(Page, { props: { data: { recipes: [], activePlan: null } } });
 		expect(screen.getByText(/keine rezepte/i)).toBeInTheDocument();
 	});