<script lang="ts">
	import { slide } from 'svelte/transition';
	import { t } from '$lib/i18n';
	import MdiIcon from '$lib/components/MdiIcon.svelte';
	import IconButton from '$lib/components/IconButton.svelte';
	import CrossLink from '$lib/components/CrossLink.svelte';
	import EntitySelect from '$lib/components/EntitySelect.svelte';
	import type { EntityItem } from '$lib/components/EntitySelect.svelte';
	import type { Tracker, NotificationTarget, TrackingConfig, TemplateConfig } from '$lib/types';

	const TARGET_TYPE_ICONS: Record<string, string> = {
		telegram: 'mdiSend', webhook: 'mdiWebhook', email: 'mdiEmailOutline',
		discord: 'mdiChat', slack: 'mdiSlack', ntfy: 'mdiBell', matrix: 'mdiMatrix', broadcast: 'mdiBullhorn',
	};

	interface Props {
		tracker: Tracker;
		trackingConfigs: TrackingConfig[];
		templateConfigs: TemplateConfig[];
		unlinkedTargets: NotificationTarget[];
		newLinkTargetId: number;
		newLinkTrackingConfigId: number;
		newLinkTemplateConfigId: number;
		addingTarget: boolean;
		ttTesting: Record<string, string>;
		configsForTracker: (configs: (TrackingConfig | TemplateConfig)[]) => any[];
		onupdateLink: (tt: any, field: string, value: any) => void;
		onremoveLink: (ttId: number) => void;
		onaddLink: () => void;
		onopenTestMenu: (ttId: number, event: MouseEvent) => void;
		onchangeNewTarget: (value: number) => void;
		onchangeNewTrackingConfig: (value: number) => void;
		onchangeNewTemplateConfig: (value: number) => void;
	}

	let {
		tracker,
		trackingConfigs,
		templateConfigs,
		unlinkedTargets,
		newLinkTargetId,
		newLinkTrackingConfigId,
		newLinkTemplateConfigId,
		addingTarget,
		ttTesting,
		configsForTracker,
		onupdateLink,
		onremoveLink,
		onaddLink,
		onopenTestMenu,
		onchangeNewTarget,
		onchangeNewTrackingConfig,
		onchangeNewTemplateConfig,
	}: Props = $props();

	let expandedTt = $state<number | null>(null);

	function toItems(configs: any[]): EntityItem[] {
		return configsForTracker(configs).map(c => ({
			value: c.id,
			label: c.name,
			icon: c.icon || '',
		}));
	}

	function configName(configs: any[], id: number | null): string {
		if (!id) return '';
		const c = configs.find((x: any) => x.id === id);
		return c?.name || '';
	}

	const trackingConfigItems = $derived(toItems(trackingConfigs));
	const templateConfigItems = $derived(toItems(templateConfigs));
	const linkedTargetIds = $derived(new Set((tracker.tracker_targets || []).map((tt: any) => tt.target_id)));
	const targetItems = $derived<EntityItem[]>(unlinkedTargets.map(tgt => ({
		value: tgt.id,
		label: tgt.name,
		icon: tgt.icon || TARGET_TYPE_ICONS[tgt.type] || 'mdiTarget',
		desc: tgt.type,
		disabled: linkedTargetIds.has(tgt.id),
		disabledHint: linkedTargetIds.has(tgt.id) ? t('notificationTracker.alreadyLinked') : undefined,
	})));
</script>

<div class="mt-3 border-t border-[var(--color-border)] pt-3 space-y-1" in:slide>
	{#if (tracker.tracker_targets || []).length === 0}
		<p class="text-xs text-[var(--color-muted-foreground)]">{t('notificationTracker.noLinkedTargets')}</p>
	{:else}
		{#each tracker.tracker_targets as tt (tt.id)}
			{@const isExpanded = expandedTt === tt.id}
			<div class="rounded-md bg-[var(--color-muted)]/30 overflow-hidden">
				<!-- Header row — always visible -->
				<div class="flex items-center justify-between text-sm px-2.5 py-1.5">
					<div class="flex items-center gap-2 min-w-0">
						<span style="color: var(--color-primary);"><MdiIcon name={tt.target_icon || TARGET_TYPE_ICONS[tt.target_type ?? ''] || 'mdiTarget'} size={16} /></span>
						<button type="button" class="flex items-center gap-1 hover:text-[var(--color-primary)] transition-colors cursor-pointer"
							onclick={() => expandedTt = isExpanded ? null : tt.id}>
							<span class="font-medium truncate">{tt.target_name || `Target #${tt.target_id}`}</span>
							<MdiIcon name={isExpanded ? 'mdiChevronUp' : 'mdiChevronDown'} size={14} />
						</button>
						<span class="text-xs px-1.5 py-0.5 rounded bg-[var(--color-muted)] text-[var(--color-muted-foreground)]">{tt.target_type}</span>
						{#if !tt.enabled}
							<span class="text-xs px-1.5 py-0.5 rounded bg-[var(--color-warning-bg)] text-[var(--color-warning-fg)]">{t('notificationTracker.paused')}</span>
						{/if}
						<!-- Show overridden config badges when collapsed -->
						{#if !isExpanded}
							{#if tt.tracking_config_id}
								<CrossLink href="/tracking-configs" icon="mdiCog" label={configName(trackingConfigs, tt.tracking_config_id)} entityId={tt.tracking_config_id} />
							{/if}
							{#if tt.template_config_id}
								<CrossLink href="/template-configs" icon="mdiFileDocumentEdit" label={configName(templateConfigs, tt.template_config_id)} entityId={tt.template_config_id} />
							{/if}
						{/if}
					</div>
					<div class="flex items-center gap-1">
						<IconButton icon="mdiDotsVertical" size={14} title={t('common.test')}
							onclick={(e: MouseEvent) => onopenTestMenu(tt.id, e)}
							disabled={Object.keys(ttTesting).some(k => k.startsWith(`${tt.id}_`) && ttTesting[k])} />
						<IconButton icon={tt.enabled ? 'mdiPause' : 'mdiPlay'} size={14}
							title={tt.enabled ? t('notificationTracker.pause') : t('notificationTracker.resume')}
							onclick={() => onupdateLink(tt, 'enabled', !tt.enabled)} />
						<IconButton icon="mdiClose" size={14} title={t('common.delete')}
							onclick={() => onremoveLink(tt.id)} variant="danger" />
					</div>
				</div>

				<!-- Expanded config selectors -->
				{#if isExpanded}
					<div class="px-2.5 pb-2.5" in:slide={{ duration: 150 }}>
						<div class="grid grid-cols-2 gap-2">
							<div>
								<label class="block text-xs text-[var(--color-muted-foreground)] mb-1">{t('trackingConfig.title')}</label>
								<EntitySelect items={trackingConfigItems} value={tt.tracking_config_id}
									placeholder={t('common.noneDefault')} size="sm" allowNone noneLabel={t('common.noneDefault')}
									onselect={(v) => onupdateLink(tt, 'tracking_config_id', Number(v) || null)} />
							</div>
							<div>
								<label class="block text-xs text-[var(--color-muted-foreground)] mb-1">{t('templateConfig.title')}</label>
								<EntitySelect items={templateConfigItems} value={tt.template_config_id}
									placeholder={t('common.noneDefault')} size="sm" allowNone noneLabel={t('common.noneDefault')}
									onselect={(v) => onupdateLink(tt, 'template_config_id', Number(v) || null)} />
							</div>
						</div>
					</div>
				{/if}
			</div>
		{/each}
	{/if}

	<!-- Add target -->
	{#if unlinkedTargets.length > 0}
		<div class="mt-1">
			<EntitySelect items={targetItems} value={null}
				placeholder={"+ " + t('notificationTracker.addTarget')} size="sm"
				onselect={(v) => { onchangeNewTarget(Number(v) || 0); setTimeout(onaddLink, 0); }} />
		</div>
	{/if}
</div>
