/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the Source EULA. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/

'use strict';

import * as fs from 'fs';
import * as debug from 'debug';
import * as extract from 'extract-zip';
import * as path from 'path';
import { downloadArtifact } from '@electron/get';

const root = path.dirname(path.dirname(__dirname));

const d = debug('explorer-appx-fetcher');

export async function downloadExplorerAppx(outDir: string, quality: string = 'stable', targetArch: string = 'x64'): Promise<void> {
	const fileNamePrefix = quality === 'insider' ? 'code_insiders' : 'code';
	const fileName = `${fileNamePrefix}_explorer_${targetArch}.zip`;

	if (await fs.existsSync(path.resolve(outDir, 'resources.pri'))) {
		return;
	}

	if (!await fs.existsSync(outDir)) {
		await fs.mkdirSync(outDir, { recursive: true });
	}

	d(`downloading ${fileName}`);
	const artifact = await downloadArtifact({
		isGeneric: true,
		version: '3.0.4',
		artifactName: fileName,
		unsafelyDisableChecksums: true,
		mirrorOptions: {
			mirror: 'https://github.com/microsoft/vscode-explorer-command/releases/download/',
			customDir: '3.0.4',
			customFilename: fileName
		}
	});

	d(`unpacking from ${fileName}`);
	await extract(artifact, { dir: fs.realpathSync(outDir) });
}

async function main(outputDir?: string): Promise<void> {
	let arch = process.env['VSCODE_ARCH'];

	if (!outputDir) {
		throw new Error('Required build env not set');
	}

	if (arch === 'ia32') {
		arch = 'x86';
	}

	const product = JSON.parse(fs.readFileSync(path.join(root, 'product.json'), 'utf8'));
	await downloadExplorerAppx(outputDir, (product as any).quality, arch);
}

if (require.main === module) {
	main(process.argv[2]).catch(err => {
		console.error(err);
		process.exit(1);
	});
}
