<script lang="ts">
import './layout.css';
import { page } from '$app/state';
import { onMount, untrack } from 'svelte';
import * as m from '$lib/paraglide/messages.js';
import LanguageSwitcher from '$lib/shared/primitives/LanguageSwitcher.svelte';
import ThemeToggle from '$lib/shared/primitives/ThemeToggle.svelte';
import NotificationBell from '$lib/notification/NotificationBell.svelte';
import AppNav from './AppNav.svelte';
import UserMenu from './UserMenu.svelte';
import ConfirmDialog from '$lib/shared/primitives/ConfirmDialog.svelte';
import { provideConfirmService } from '$lib/shared/services/confirm.svelte';
import { provideNotificationStore } from '$lib/notification/notifications.svelte';
import { bulkSelectionStore } from '$lib/document/bulkSelection.svelte';

let { children, data } = $props();

// Provide the confirmation service to the entire component tree.
// ConfirmDialog below reads it via getConfirmService() and renders the <dialog>.
provideConfirmService();

// Provide the notification store to the tree. NotificationBell (header) and the
// Chronik page read it via getNotificationStore(); the bell drives the SSE
// lifecycle through init()/destroy() on mount.
provideNotificationStore();

// Auto-clear the bulk-selection store when the user leaves the routes that
// surface the BulkSelectionBar. Without this the selection silently follows
// the user to /persons / /admin etc. and reappears as a stale 3-doc count
// when they wander back to /documents — Felix C4 on PR #331.
//
// `bulkSelectionStore.size` is read inside `untrack` so the effect only
// re-fires on route change, not on every checkbox toggle (Felix C3 cycle 3).
$effect(() => {
	const path = page.url.pathname;
	const inBulkContext =
		path === '/documents' ||
		path.startsWith('/documents/') ||
		path === '/enrich' ||
		path.startsWith('/enrich/');
	if (!inBulkContext) {
		untrack(() => {
			if (bulkSelectionStore.size > 0) bulkSelectionStore.clear();
		});
	}
});

const isAdmin = $derived(
	data?.user?.groups?.some((g: { permissions: string[] }) => g.permissions.includes('ADMIN'))
);

const canUpload = $derived(Boolean(data?.user && data.canWrite));

// Set after client-side hydration completes. Used by E2E tests to know the
// page is interactive (event handlers registered) before they interact with it.
let hydrated = $state(false);
onMount(() => {
	hydrated = true;
});

const isAuthPage = $derived(
	['/login', '/register', '/forgot-password', '/reset-password'].some((p) =>
		page.url.pathname.startsWith(p)
	)
);

const userInitials = $derived.by(() => {
	const first = data?.user?.firstName?.[0];
	const last = data?.user?.lastName?.[0];
	if (first && last) return (first + last).toUpperCase();
	return null;
});
</script>

<div class="min-h-screen bg-canvas" data-hydrated={hydrated || undefined}>
	{#if !isAuthPage}
		<header class="sticky top-0 z-50 bg-header">
			<div class="h-1 bg-accent"></div>
			<div class="mx-auto max-w-7xl px-4 sm:px-6 lg:px-8">
				<div class="flex h-16 justify-between">
					<!-- Logo & Nav -->
					<AppNav isAdmin={isAdmin} />

					<!-- Right Side -->
					<div class="flex items-center gap-3">
						{#if canUpload}
							<a
								href="/documents/new"
								aria-label={m.upload_action()}
								class="inline-flex items-center gap-2 rounded-sm border border-white/25 px-3.5 py-1.5 font-sans text-[11px] font-bold tracking-[.12em] text-white uppercase transition-colors hover:bg-white/10"
							>
								<svg
									xmlns="http://www.w3.org/2000/svg"
									width="14"
									height="14"
									viewBox="0 0 24 24"
									fill="none"
									stroke="currentColor"
									stroke-width="2.5"
									stroke-linecap="round"
									stroke-linejoin="round"
									aria-hidden="true"
								>
									<path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4" />
									<polyline points="17 8 12 3 7 8" />
									<line x1="12" y1="3" x2="12" y2="15" />
								</svg>
								<span class="hidden xl:inline">{m.upload_action()}</span>
							</a>
						{/if}
						<!-- Language selector (desktop only — mobile lives in nav drawer) -->
						<div
							class="hidden items-center gap-1 pr-3 lg:flex [&_button]:px-1.5 [&_button]:py-1 [&_button]:text-xs"
						>
							<LanguageSwitcher inverted />
						</div>

						<!-- Theme toggle -->
						<ThemeToggle />

						<!-- Notification bell (authenticated users only) -->
						{#if data?.user}
							<NotificationBell />
						{/if}

						<!-- User menu -->
						<UserMenu userInitials={userInitials} />
					</div>
				</div>
			</div>
		</header>
	{/if}

	<main class={isAuthPage ? '' : 'py-6'}>
		{@render children()}
	</main>

	<!-- Shared confirmation dialog — used by getConfirmService() throughout the app -->
	<ConfirmDialog />
</div>
