import yargs, { Choices } from 'yargs';
import { args, AvailableMuxer, groups } from './module.args';
import { LanguageItem } from './module.langsData';
import { DownloadInfo } from '../@types/messageHandler';
import { HLSCallback } from './hls-download';
import leven from 'leven';
import { console } from './log';
import { CrunchyVideoPlayStreams, CrunchyAudioPlayStreams } from '../@types/enums';
import pj from '../package.json';

let argvC: {
	[x: string]: unknown;
	ccTag: string;
	defaultAudio: LanguageItem;
	defaultSub: LanguageItem;
	ffmpegOptions: string[];
	mkvmergeOptions: string[];
	force: 'Y' | 'y' | 'N' | 'n' | 'C' | 'c';
	skipUpdate: boolean;
	videoTitle: string;
	override: string[];
	fsRetryTime: number;
	forceMuxer: AvailableMuxer | undefined;
	username: string | undefined;
	password: string | undefined;
	token: string | undefined;
	silentAuth: boolean;
	skipSubMux: boolean;
	downloadArchive: boolean;
	addArchive: boolean;
	but: boolean;
	auth: boolean | undefined;
	dlFonts: boolean | undefined;
	search: string | undefined;
	'search-type': string;
	page: number | undefined;
	locale: string;
	new: boolean | undefined;
	'movie-listing': string | undefined;
	'show-raw': string | undefined;
	'season-raw': string | undefined;
	series: string | undefined;
	s: string | undefined;
	srz: string | undefined;
	e: string | undefined;
	extid: string | undefined;
	q: number;
	x: number;
	// kstream: number;
	cstream: keyof typeof CrunchyVideoPlayStreams;
	vstream: keyof typeof CrunchyVideoPlayStreams;
	astream: keyof typeof CrunchyAudioPlayStreams;
	tsd: boolean | undefined;
	partsize: number;
	hslang: string;
	dlsubs: string[];
	novids: boolean | undefined;
	noaudio: boolean | undefined;
	nosubs: boolean | undefined;
	dubLang: string[];
	all: boolean;
	fontSize: number;
	combineLines: boolean;
	allDubs: boolean;
	timeout: number;
	waittime: number;
	simul: boolean;
	mp4: boolean;
	skipmux: boolean | undefined;
	fileName: string;
	numbers: number;
	nosess: string;
	debug: boolean | undefined;
	raw: boolean;
	rawoutput: string;
	nocleanup: boolean;
	help: boolean | undefined;
	service: 'crunchy' | 'hidive' | 'adn';
	update: boolean;
	fontName: string | undefined;
	_: (string | number)[];
	$0: string;
	dlVideoOnce: boolean;
	chapters: boolean;
	// crapi: 'android' | 'web';
	removeBumpers: boolean;
	originalFontSize: boolean;
	keepAllVideos: boolean;
	syncTiming: boolean;
	callbackMaker?: (data: DownloadInfo) => HLSCallback;
	// Subtitle Fix Options
	srtAssFix: boolean;
	layoutResFix: boolean;
	scaledBorderAndShadowFix: boolean;
	scaledBorderAndShadow: 'yes' | 'no';
	originalScriptFix: boolean;
};

export type ArgvType = typeof argvC;

const appArgv = (
	cfg: {
		[key: string]: unknown;
	},
	isGUI = false
) => {
	if (argvC) return argvC;
	yargs(process.argv.slice(2));
	const argv = getArgv(cfg, isGUI).parseSync();
	argvC = argv;
	return argv;
};

const overrideArguments = (cfg: { [key: string]: unknown }, override: Partial<typeof argvC>, isGUI = false) => {
	const argv = getArgv(cfg, isGUI)
		.middleware((ar) => {
			for (const key of Object.keys(override)) {
				ar[key] = override[key];
			}
		})
		.parseSync();
	argvC = argv;
};

export { appArgv, overrideArguments };

const getArgv = (cfg: { [key: string]: unknown }, isGUI: boolean) => {
	const parseDefault = <T = unknown>(key: string, _default: T): T => {
		if (Object.prototype.hasOwnProperty.call(cfg, key)) {
			return cfg[key] as T;
		} else return _default;
	};
	const argv = yargs
		.parserConfiguration({
			'duplicate-arguments-array': false,
			'camel-case-expansion': false
		})
		.wrap(yargs.terminalWidth())
		.usage('Usage: $0 [options]')
		.version(pj.version)
		.help(true);
	//.strictOptions()
	const data = args.map((a) => {
		return {
			...a,
			demandOption: !isGUI && a.demandOption,
			group: groups[a.group],
			default: typeof a.default === 'object' && !Array.isArray(a.default) ? parseDefault((a.default as any).name || a.name, (a.default as any).default) : a.default
		};
	});
	for (const item of data)
		argv.option(item.name, {
			...item,
			coerce: (value) => {
				if (item.transformer) {
					return item.transformer(value);
				} else {
					return value;
				}
			},
			choices: item.name === 'service' && isGUI ? undefined : (item.choices as unknown as Choices)
		});

	// Custom logic for suggesting corrections for misspelled options
	argv.middleware((argv: Record<string, any>) => {
		// List of valid options
		const validOptions = [...args.map((a) => a.name), ...(args.map((a) => a.alias).filter((alias) => alias !== undefined) as string[])];
		const unknownOptions = Object.keys(argv).filter((key) => !validOptions.includes(key) && key !== '_' && key !== '$0'); // Filter out known options

		const suggestedOptions: Record<string, boolean> = {};
		unknownOptions.forEach((actualOption) => {
			const closestOption = validOptions.find((option) => {
				const levenVal = leven(option, actualOption);
				return levenVal <= 2 && levenVal > 0;
			});

			if (closestOption && !suggestedOptions[closestOption]) {
				suggestedOptions[closestOption] = true;
				console.info(`Unknown option ${actualOption}, did you mean ${closestOption}?`);
			} else if (!suggestedOptions[actualOption]) {
				suggestedOptions[actualOption] = true;
				console.info(`Unknown option ${actualOption}`);
			}
		});
	});
	return argv as unknown as yargs.Argv<typeof argvC>;
};