import { redirect } from "next/navigation";
import { canAccess, getAdminContext, PERMS } from "@/lib/permissions";
import { prisma } from "@/lib/prisma";
import { siteSettings } from "@/lib/services/site-settings";
import {
	DEFAULT_SOUNDTRACK_BASE_URL,
	parseTrackSamples,
} from "@/lib/services/soundtracks";
import { SoundsClient } from "./sounds-client";

export default async function SoundsPage() {
	const { session, permissions } = await getAdminContext();

	if (!canAccess(permissions, PERMS.CATALOG_VIEW, session.user.rank)) {
		redirect("/admin");
	}

	const canEdit = canAccess(permissions, PERMS.CATALOG_EDIT, session.user.rank);

	const [rows, usage, baseUrlSetting] = await Promise.all([
		prisma.soundtracks.findMany({
			orderBy: { id: "asc" },
			select: {
				id: true,
				code: true,
				name: true,
				author: true,
				length: true,
				track: true,
			},
		}),
		prisma.catalogItems.groupBy({
			by: ["songId"],
			where: { songId: { gt: 0 } },
			_count: { _all: true },
		}),
		siteSettings.get("soundtrack_base_url", DEFAULT_SOUNDTRACK_BASE_URL),
	]);

	const usageMap: Record<number, number> = {};
	for (const row of usage) {
		if (row.songId != null) usageMap[row.songId] = row._count._all;
	}

	const soundtracks = rows.map((r) => {
		const samples = parseTrackSamples(r.track);
		return {
			id: r.id,
			code: r.code,
			name: r.name,
			author: r.author,
			length: r.length,
			track: r.track,
			samples,
			kind: (samples.length > 0 ? "composition" : "single") as
				| "composition"
				| "single",
			usedBy: usageMap[r.id] ?? 0,
		};
	});

	// Normalize: ensure trailing slash so ${base}${code}.mp3 yields a valid URL.
	const configuredBaseUrl = baseUrlSetting ?? "/sounds/";
	const baseUrl = configuredBaseUrl.endsWith("/")
		? configuredBaseUrl
		: `${configuredBaseUrl}/`;

	return (
		<div className="space-y-6">
			<div>
				<h1 className="text-3xl font-bold tracking-tight">Song Disks</h1>
				<p className="text-muted-foreground">
					Carica e gestisci i file MP3 dei song disk riprodotti dai jukebox
					in-game. I file sono serviti da <code>{baseUrl}</code> (configurabile
					in{" "}
					<a href="/admin/settings/cms" className="underline">
						Impostazioni &gt; CMS
					</a>
					).
				</p>
			</div>
			<SoundsClient
				soundtracks={soundtracks}
				canEdit={canEdit}
				baseUrl={baseUrl}
			/>
		</div>
	);
}