import path from "node:path";
import type { ProbeData } from "./utils";
import commandExists from "command-exists";

export const coverRegex = process.env.COVER_REGEX || /(C|c)over.(png|jpg)$/;
export const musicRoot = process.env.MUSIC_ROOT || "";
if (musicRoot === "") {
	console.error("Please define the environment variable MUSIC_ROOT");
	process.exit(1);
}

if (!path.isAbsolute(musicRoot)) {
	console.error(`Music root ${musicRoot} is not absolute`);
	process.exit(1);
}

if (!commandExists.sync("ffmpeg")) {
	console.error("Required command ffmpeg not found in PATH");
	process.exit(1);
}
if (!commandExists.sync("ffprobe")) {
	console.error("Required command ffprobe not found in PATH");
	process.exit(1);
}
if (!commandExists.sync("tar")) {
	console.error("Required command tar not found in PATH");
	process.exit(1);
}

export const mediaTypes = ["audio", "video"];
export const allowedTypes = [...mediaTypes, "image"];

export const fileTypeCache = new Map<string, string>();
export const probeCache = new Map<string, ProbeData>();
export const generatedPlaylistIds = new Map<string, string[]>();

export class PathInfo {
	constructor(public mimeType: string) {}
}

export class ServerError {
	constructor(
		public status: number,
		public error: string,
	) {}
}