import { ProjectListItem } from "@/components/ProjectListItem";
import { type ProjectEntry, projectList, projects } from "@/projects";
import { Link, Route, Routes, useParams } from "react-router-dom";
import { ThemeToggle } from "./components/theme-toggle";

function App() {
	return (
		<Routes>
			<Route path="/" element={<Home />} />
			<Route path="/projects/:slug" element={<ProjectRoute />} />
			<Route path="*" element={<NotFound />} />
		</Routes>
	);
}

export default App;

function Home() {
	const isDevMode = import.meta.env.VITE_PUBLIC_DEV === "1";
	const sortedProjects: ProjectEntry[] = [...projectList].sort(
		(a, b) =>
			parseDate(b.metadata.date).getTime() -
			parseDate(a.metadata.date).getTime(),
	);

	return (
		<div className="min-h-dvh flex flex-col items-center justify-center gap-8 text-2xl px-6 py-10">
			<div className="flex flex-col items-center gap-4">
				<h1 className="picnic text-7xl text-balance">Oliver Bryan</h1>
			</div>
			<div className="w-full max-w-5xl grid grid-cols-1 md:grid-cols-2 gap-4">
				{sortedProjects.map((project) => (
					<ProjectListItem
						key={project.metadata.slug}
						metadata={project.metadata}
						isDevMode={isDevMode}
					/>
				))}
			</div>
			<ThemeToggle />
		</div>
	);
}

function ProjectRoute() {
	const { slug } = useParams();
	if (!slug || !projects[slug]) return <NotFound />;

	const { Component } = projects[slug];
	return <Component />;
}

function NotFound() {
	return (
		<div className="min-h-dvh flex flex-col items-center justify-center gap-4 text-2xl">
			<h1 className="text-4xl text-accent text-balance">Not found</h1>
			<Link className="text-accent underline" to="/">
				Go home
			</Link>
		</div>
	);
}

function parseDate(dateStr: string): Date {
	const lower = dateStr.toLowerCase();

	if (lower.includes("q1")) return new Date("2023-01-01");
	if (lower.includes("q2")) return new Date("2023-04-01");
	if (lower.includes("q3")) return new Date("2023-07-01");
	if (lower.includes("q4")) return new Date("2023-10-01");

	const months: Record<string, number> = {
		january: 0,
		february: 1,
		march: 2,
		april: 3,
		may: 4,
		june: 5,
		july: 6,
		august: 7,
		september: 8,
		october: 9,
		november: 10,
		december: 11,
	};

	for (const [monthName, monthIndex] of Object.entries(months)) {
		if (lower.includes(monthName)) {
			const yearMatch = dateStr.match(/\b(20\d{2})\b/);
			if (yearMatch) {
				return new Date(Number.parseInt(yearMatch[1], 10), monthIndex, 1);
			}
		}
	}

	const yearMatch = dateStr.match(/\b(20\d{2})\b/);
	if (yearMatch) {
		return new Date(Number.parseInt(yearMatch[1], 10), 0, 1);
	}

	return new Date(0);
}