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

// @ts-check

const fs = require('fs');
const path = require('path');

/** @type {string[]} */
const upstreamSpecs = [
	'basename',
	'cat',
	'chmod',
	'chown',
	'clear',
	'cp',
	'curl',
	'cut',
	'date',
	'dd',
	'df',
	'diff',
	'dig',
	'dirname',
	'du',
	'echo',
	'env',
	'export',
	'fdisk',
	'find',
	'fmt',
	'fold',
	'grep',
	'head',
	'htop',
	'id',
	'jq',
	'kill',
	'killall',
	'less',
	'ln',
	'ls',
	'lsblk',
	'lsof',
	'mkdir',
	'more',
	'mount',
	'mv',
	'nl',
	'od',
	'paste',
	'ping',
	'pkill',
	'ps',
	'pwd',
	'readlink',
	'rm',
	'rmdir',
	'rsync',
	'scp',
	'sed',
	'seq',
	'shred',
	'sort',
	'source',
	'split',
	'stat',
	'su',
	'sudo',
	'tac',
	'tail',
	'tar',
	'tee',
	'time',
	'top',
	'touch',
	'tr',
	'traceroute',
	'tree',
	'truncate',
	'uname',
	'uniq',
	'unzip',
	'wc',
	'wget',
	'where',
	'whereis',
	'which',
	'who',
	'xargs',
	'xxd',
	'zip',

	// OS package management
	'apt',
	'brew',

	// Editors
	'nano',
	'vim',

	// Shells
	'ssh',

	// Android
	'adb',

	// Docker
	'docker',
	'docker-compose',

	// Dotnet
	'dotnet',

	// Go
	'go',

	// JavaScript / TypeScript
	'node',
	'nvm',
	'yo',

	// Python
	'python',
	'python3',
	'ruff',

	// Ruby
	'bundle',
	'ruby',
];

const extRoot = path.resolve(path.join(__dirname, '..'));
const replaceStrings = [
	[
		'import { filepaths } from "@fig/autocomplete-generators";',
		'import { filepaths } from \'../../helpers/filepaths\';'
	],
	[
		'import { filepaths, keyValue } from "@fig/autocomplete-generators";',
		'import { filepaths } from \'../../helpers/filepaths\'; import { keyValue } from \'../../helpers/keyvalue\';'
	],
];
const indentSearch = [20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1].map(e => new RegExp('^' + ' '.repeat(e * 2), 'gm'));
const indentReplaceValue = [20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1].map(e => '\t'.repeat(e));

const specSpecificReplaceStrings = new Map([
	['docker', [
		[
			'console.error(error);',
			'console.error(error); return null!;'
		]
	]],
	['dotnet', [
		[
			'.match(argRegex)',
			'.match(argRegex)!'
		], [
			'"https://upload.wikimedia.org/wikipedia/commons/7/7d/Microsoft_.NET_logo.svg";',
			'undefined;',
		]
	]],
	['gh', [
		[
			'const parts = elm.match(/\\S+/g);',
			'const parts = elm.match(/\\S+/g)!;'
		],
		[
			'description: repo.description,',
			'description: repo.description ?? undefined,'
		],
		[
			'icon: "fig://icon?type=git"',
			'icon: "vscode://icon?type=11"'
		]
	]],
	['git', [
		[
			'import { ai } from "@fig/autocomplete-generators";',
			'function ai(...args: any[]): undefined { return undefined; }'
		], [
			'prompt: async ({ executeCommand }) => {',
			'prompt: async ({ executeCommand }: any) => {'
		], [
			'message: async ({ executeCommand }) =>',
			'message: async ({ executeCommand }: any) =>'
		]
	]],
	['yo', [
		[
			'icon: "https://avatars.githubusercontent.com/u/1714870?v=4",',
			'icon: undefined,',
		]
	]],
]);

for (const spec of upstreamSpecs) {
	const source = path.join(extRoot, `third_party/autocomplete/src/${spec}.ts`);
	const destination = path.join(extRoot, `src/completions/upstream/${spec}.ts`);
	fs.copyFileSync(source, destination);

	let content = fs.readFileSync(destination).toString();
	for (const replaceString of replaceStrings) {
		content = content.replaceAll(replaceString[0], replaceString[1]);
	}
	for (let i = 0; i < indentSearch.length; i++) {
		content = content.replaceAll(indentSearch[i], indentReplaceValue[i]);
	}
	const thisSpecReplaceStrings = specSpecificReplaceStrings.get(spec);
	if (thisSpecReplaceStrings) {
		for (const replaceString of thisSpecReplaceStrings) {
			content = content.replaceAll(replaceString[0], replaceString[1]);
		}
	}

	fs.writeFileSync(destination, content);
}

// Generate upstreamSpecs.ts with re-exports
function specToExportName(spec) {
	return spec.replace(/-([a-z])/g, (_, c) => c.toUpperCase());
}

function specToReExport(spec) {
	return `export { default as ${specToExportName(spec)} } from './completions/upstream/${spec}';`;
}

const copyright = `/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/`;

const lines = [
	copyright,
	'',
	'// This file is generated by scripts/update-specs.js',
	...upstreamSpecs.map(specToReExport),
	'',
];
fs.writeFileSync(path.join(extRoot, 'src/upstreamSpecs.ts'), lines.join('\n'));