<script lang="ts">
import { goto } from '$app/navigation';
import { m } from '$lib/paraglide/messages.js';
import { bulkSelectionStore } from '$lib/document/bulkSelection.svelte';

let { canWrite }: { canWrite: boolean } = $props();

const count = $derived(bulkSelectionStore.size);
const visible = $derived(canWrite && count > 0);

function openBulkEdit() {
	goto('/documents/bulk-edit');
}

function clearAll() {
	bulkSelectionStore.clear();
}

// Escape clears the selection — keyboard escape hatch when the user has
// drilled into a 50-row selection and wants to bail without Tab-ing through
// the whole footer (WCAG 2.1.1). Bails when an open dialog, expanded menu,
// or popover is in front so we don't steal Esc from NotificationBell,
// ConfirmDialog, HelpPopover, etc.
function onEscape(e: KeyboardEvent) {
	if (e.key !== 'Escape' || !visible) return;
	if (e.defaultPrevented) return;
	const overlay = document.querySelector(
		'dialog[open], [aria-expanded="true"], [role="menu"]:not([hidden]), [role="dialog"]:not([hidden])'
	);
	if (overlay) return;
	clearAll();
}
</script>

<svelte:window onkeydown={onEscape} />

{#if visible}
	<div
		data-testid="bulk-selection-bar"
		class="fixed right-0 bottom-0 left-0 z-30 flex items-center justify-between gap-3 border-t border-line bg-surface px-4 py-3 pb-[max(0.75rem,env(safe-area-inset-bottom))] shadow-[0_-2px_8px_rgba(0,0,0,0.06)] sm:px-6"
	>
		<div class="flex items-baseline gap-3">
			<span
				class="font-sans text-sm font-medium text-ink"
				data-testid="bulk-selection-count"
				aria-live="polite"
				aria-atomic="true"
			>
				{count === 1 ? m.bulk_edit_n_selected_one() : m.bulk_edit_n_selected_other({ count })}
			</span>
			<span class="hidden font-sans text-xs text-ink-3 sm:inline">
				{m.bulk_edit_clear_hint_keyboard()}
			</span>
		</div>
		<div class="flex items-center gap-2">
			<button
				type="button"
				onclick={clearAll}
				class="inline-flex min-h-[44px] items-center px-4 py-2 font-sans text-sm font-medium text-ink-2 transition-colors hover:text-ink"
				data-testid="bulk-clear-all"
			>
				{m.bulk_edit_clear_selection()}
			</button>
			<button
				type="button"
				onclick={openBulkEdit}
				class="inline-flex min-h-[44px] items-center bg-primary px-5 py-2 font-sans text-xs font-bold tracking-widest text-primary-fg uppercase transition-colors hover:bg-primary/90"
				data-testid="bulk-edit-open"
			>
				{m.bulk_edit_button()}
			</button>
		</div>
	</div>
{/if}
