"use client";

import { useState, useEffect } from "react";
import Link from "next/link";
import { Card, CardHeader, CardContent } from "@/components/ui/Card";
import Button from "@/components/ui/Button";
import Badge from "@/components/ui/Badge";
import PageContainer from "@/components/ui/PageContainer";
import PageHeader from "@/components/ui/PageHeader";
import { useTranslation } from "@/lib/i18n";

export default function TaskTemplatesPage() {
	const { t } = useTranslation();
	const [templates, setTemplates] = useState([]);
	const [loading, setLoading] = useState(true);

	useEffect(() => {
		const fetchTemplates = async () => {
			try {
				const response = await fetch('/api/tasks/templates');
				if (response.ok) {
					const data = await response.json();
					setTemplates(data);
				} else {
					console.error('Failed to fetch templates');
				}
			} catch (error) {
				console.error('Error fetching templates:', error);
			} finally {
				setLoading(false);
			}
		};

		fetchTemplates();
	}, []);

	const getTaskCategoryBadge = (taskCategory) => {
		const colors = {
			design: "bg-blue-100 text-blue-800",
			construction: "bg-green-100 text-green-800"
		};

		return (
			<span className={`inline-flex items-center px-2 py-1 rounded-full text-xs font-medium ${colors[taskCategory] || "bg-gray-100 text-gray-800"}`}>
				{taskCategory === "design" ? "Projektowe" : taskCategory === "construction" ? "Budowlane" : taskCategory}
			</span>
		);
	};

	if (loading) {
		return (
			<PageContainer>
				<PageHeader
					title={t('taskTemplates.title')}
					description={t('taskTemplates.subtitle')}
					actions={[
						<Link href="/tasks/templates/new" key="new-template">
							<Button variant="primary" size="lg">
								<svg
									className="w-5 h-5 mr-2"
									fill="none"
									stroke="currentColor"
									viewBox="0 0 24 24"
								>
									<path
										strokeLinecap="round"
										strokeLinejoin="round"
										strokeWidth={2}
										d="M12 4v16m8-8H4"
									/>
								</svg>
								{t('taskTemplates.newTemplate')}
							</Button>
						</Link>,
						<Link href="/task-sets" key="task-sets">
							<Button variant="secondary" size="lg">
								<svg
									className="w-5 h-5 mr-2"
									fill="none"
									stroke="currentColor"
									viewBox="0 0 24 24"
								>
									<path
										strokeLinecap="round"
										strokeLinejoin="round"
										strokeWidth={2}
										d="M19 11H5m14 0a2 2 0 012 2v6a2 2 0 01-2 2H5a2 2 0 01-2-2v-6a2 2 0 012-2m14 0V9a2 2 0 00-2-2M5 11V9a2 2 0 012-2m0 0V5a2 2 0 012-2h6a2 2 0 012 2v2M7 7h10"
									/>
								</svg>
								Zestawy zadań
							</Button>
						</Link>
					]}
				/>
				<div className="text-center py-12">
					<div className="text-gray-500">{t('common.loading')}</div>
				</div>
			</PageContainer>
		);
	}

	return (
		<PageContainer>
			<PageHeader
				title={t('taskTemplates.title')}
				description={t('taskTemplates.subtitle')}
				actions={[
					<Link href="/tasks/templates/new" key="new-template">
						<Button variant="primary" size="lg">
							<svg
								className="w-5 h-5 mr-2"
								fill="none"
								stroke="currentColor"
								viewBox="0 0 24 24"
							>
								<path
									strokeLinecap="round"
									strokeLinejoin="round"
									strokeWidth={2}
									d="M12 4v16m8-8H4"
								/>
							</svg>
							{t('taskTemplates.newTemplate')}
						</Button>
					</Link>,
					<Link href="/task-sets" key="task-sets">
						<Button variant="secondary" size="lg">
							<svg
								className="w-5 h-5 mr-2"
								fill="none"
								stroke="currentColor"
								viewBox="0 0 24 24"
							>
								<path
									strokeLinecap="round"
									strokeLinejoin="round"
									strokeWidth={2}
									d="M19 11H5m14 0a2 2 0 012 2v6a2 2 0 01-2 2H5a2 2 0 01-2-2v-6a2 2 0 012-2m14 0V9a2 2 0 00-2-2M5 11V9a2 2 0 012-2m0 0V5a2 2 0 012-2h6a2 2 0 012 2v2M7 7h10"
								/>
							</svg>
							Zestawy zadań
						</Button>
					</Link>
				]}
			/>

			{templates.length === 0 ? (
				<Card>
					<CardContent className="text-center py-12">
						<div className="text-gray-400 mb-4">
							<svg
								className="w-16 h-16 mx-auto"
								fill="currentColor"
								viewBox="0 0 20 20"
							>
								<path
									fillRule="evenodd"
									d="M3 4a1 1 0 011-1h12a1 1 0 011 1v2a1 1 0 01-1 1H4a1 1 0 01-1-1V4zm0 4a1 1 0 011-1h12a1 1 0 011 1v2a1 1 0 01-1 1H4a1 1 0 01-1-1V8zm0 4a1 1 0 011-1h12a1 1 0 011 1v2a1 1 0 01-1 1H4a1 1 0 01-1-1v-2z"
									clipRule="evenodd"
								/>
							</svg>
						</div>
						<h3 className="text-lg font-medium text-gray-900 mb-2">
							{t('taskTemplates.noTemplates')}
						</h3>
						<p className="text-gray-500 mb-6">
							{t('taskTemplates.noTemplatesMessage')}
						</p>
						<Link href="/tasks/templates/new">
							<Button variant="primary">{t('taskTemplates.newTemplate')}</Button>
						</Link>
					</CardContent>
				</Card>
			) : (
				<div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
					{templates.map((template) => (
						<Card
							key={template.task_id}
							className="hover:shadow-md transition-shadow"
						>
							<CardContent className="p-6">
								<div className="flex items-start justify-between mb-4">
									<h3 className="text-lg font-semibold text-gray-900 truncate pr-2">
										{template.name}
									</h3>
									<div className="flex flex-col gap-1">
										<Badge variant="primary" size="sm">
											{template.max_wait_days} {t('common.days')}
										</Badge>
										{getTaskCategoryBadge(template.task_category)}
									</div>
								</div>
								{template.description && (
									<p className="text-gray-600 text-sm mb-4 line-clamp-2">
										{template.description}
									</p>
								)}{" "}
								<div className="flex items-center justify-end">
									<Link href={`/tasks/templates/${template.task_id}/edit`}>
										<Button variant="outline" size="sm">
											{t('taskTemplates.editTemplate')}
										</Button>
									</Link>
								</div>
							</CardContent>
						</Card>
					))}{" "}
				</div>
			)}
		</PageContainer>
	);
}