From 684d3c954e3577a6488101bf5ee85e36439fd53c Mon Sep 17 00:00:00 2001
From: Martin Kagamino Lehoux <martin@lehoux.net>
Date: Wed, 29 Jul 2026 10:31:36 +0200
Subject: feat: multi-select and bulk-update category from catalog

---
 src/routes/catalog/+page.server.ts | 25 +++++++++-
 src/routes/catalog/+page.svelte    | 97 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 120 insertions(+), 2 deletions(-)

(limited to 'src/routes/catalog')

diff --git a/src/routes/catalog/+page.server.ts b/src/routes/catalog/+page.server.ts
index 69a775a..22464dc 100644
--- a/src/routes/catalog/+page.server.ts
+++ b/src/routes/catalog/+page.server.ts
@@ -1,6 +1,13 @@
 import { fail } from '@sveltejs/kit';
-import { loadAll, toggle } from '$lib/server/services/groceries';
-import { numericId } from '$lib/server/services/validation';
+import {
+	loadAll,
+	toggle,
+	bulkUpdateGroceryCategory,
+} from '$lib/server/services/groceries';
+import {
+	numericId,
+	parseOptionalNumber,
+} from '$lib/server/services/validation';
 import type { EnrichedGrocery } from '$lib/server/services/groceries';
 import type { Category } from '$lib/server/services/types';
 import type { Actions, PageServerLoad } from './$types';
@@ -25,4 +32,18 @@ export const actions: Actions = {
 		}
 		return { success: true };
 	},
+
+	bulkUpdateCategory: async ({ request }) => {
+		const data = await request.formData();
+		const ids = data.getAll('ids').map(numericId);
+		const rawCategoryId = parseOptionalNumber(data.get('category_id'));
+		const categoryId = rawCategoryId === -1 ? null : rawCategoryId;
+
+		if (ids.length === 0) {
+			return fail(400, { error: 'Aucun article sélectionné' });
+		}
+
+		await bulkUpdateGroceryCategory(ids, categoryId);
+		return { success: true, type: 'bulkUpdate' as const };
+	},
 };
diff --git a/src/routes/catalog/+page.svelte b/src/routes/catalog/+page.svelte
index 7d3ebbe..2079d12 100644
--- a/src/routes/catalog/+page.svelte
+++ b/src/routes/catalog/+page.svelte
@@ -1,9 +1,16 @@
 <script lang="ts">
 	import { enhance } from '$app/forms';
+	import { SvelteSet } from 'svelte/reactivity';
 
 	let { data, form } = $props();
 
 	let catalogItems = $derived(data?.items ?? []);
+	let selectedIds = new SvelteSet<number>();
+
+	function toggleId(id: number) {
+		if (selectedIds.has(id)) selectedIds.delete(id);
+		else selectedIds.add(id);
+	}
 
 	function groupByCategory(items: typeof catalogItems) {
 		const groups: Record<string, typeof catalogItems> = {};
@@ -15,7 +22,43 @@
 	}
 </script>
 
+{#if catalogItems.length > 0}
+	<div class="bulk-bar">
+		<form
+			method="POST"
+			action="?/bulkUpdateCategory"
+			use:enhance={() => {
+				return async ({ update }) => {
+					await update({ reset: false });
+					selectedIds.clear();
+				};
+			}}
+		>
+			{#each Array.from(selectedIds) as id (id)}
+				<input type="hidden" name="ids" value={id} />
+			{/each}
+			<select name="category_id" class="form-select">
+				<option value={-1}>Non catégorisé</option>
+				{#each data.categories as cat (cat.id)}
+					<option value={cat.id}>{cat.name}</option>
+				{/each}
+			</select>
+			<button
+				class="btn-primary"
+				type="submit"
+				disabled={selectedIds.size === 0}
+			>
+				Mettre à jour ({selectedIds.size})
+			</button>
+		</form>
+	</div>
+{/if}
+
 <main>
+	{#if form?.error}
+		<p class="error">{form.error}</p>
+	{/if}
+
 	{#if catalogItems.length === 0}
 		<p class="empty">Aucun article</p>
 	{:else}
@@ -25,6 +68,12 @@
 				<ul class="item-list">
 					{#each items as item (item.id)}
 						<li class="item-row item-row--fixed">
+							<input
+								type="checkbox"
+								class="item-check"
+								checked={selectedIds.has(item.id)}
+								onchange={() => toggleId(item.id)}
+							/>
 							<button
 								class="item-btn item-btn--grow"
 								name="id"
@@ -60,12 +109,60 @@
 </main>
 
 <style>
+	.bulk-bar {
+		display: flex;
+		gap: 0.5rem;
+		padding: 0.5rem 1rem;
+		position: sticky;
+		top: var(--nav-height);
+		background: var(--bg);
+		border-bottom: 1px solid var(--border);
+		z-index: 10;
+	}
+
+	.bulk-bar form {
+		display: flex;
+		gap: 0.5rem;
+		align-items: center;
+		width: 100%;
+	}
+
+	.bulk-bar .form-select {
+		flex: 1;
+		min-width: 0;
+	}
+
+	.bulk-bar .btn-primary {
+		padding: 0.75rem 1rem;
+		align-self: center;
+		white-space: nowrap;
+	}
+
+	.bulk-bar .btn-primary:disabled {
+		opacity: 0.5;
+		cursor: not-allowed;
+		transform: none;
+		box-shadow: none;
+	}
+
+	.item-check {
+		width: 1.25rem;
+		height: 1.25rem;
+		accent-color: var(--accent);
+		cursor: pointer;
+		flex-shrink: 0;
+	}
+
 	.checked {
 		text-decoration: line-through;
 		color: var(--text-secondary);
 		font-weight: 400;
 	}
 
+	.error {
+		margin-bottom: 1rem;
+	}
+
 	.empty {
 		margin-top: 1rem;
 		padding: 2rem;
-- 
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