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

import * as vscode from 'vscode';
import * as nls from 'vscode-nls';
import { API as GitAPI, Repository } from './typings/git';
import { getOctokit } from './auth';

const localize = nls.loadMessageBundle();

function sanitizeRepositoryName(value: string): string {
	return value.trim().replace(/[^a-z0-9_.]/ig, '-');
}

function getPick<T extends vscode.QuickPickItem>(quickpick: vscode.QuickPick<T>): Promise<T | undefined> {
	return Promise.race<T | undefined>([
		new Promise<T>(c => quickpick.onDidAccept(() => quickpick.selectedItems.length > 0 && c(quickpick.selectedItems[0]))),
		new Promise<undefined>(c => quickpick.onDidHide(() => c(undefined)))
	]);
}

export async function publishRepository(gitAPI: GitAPI, repository?: Repository): Promise<void> {
	if (!vscode.workspace.workspaceFolders?.length) {
		return;
	}

	let folder: vscode.WorkspaceFolder;

	if (vscode.workspace.workspaceFolders.length === 1) {
		folder = vscode.workspace.workspaceFolders[0];
	} else {
		const picks = vscode.workspace.workspaceFolders.map(folder => ({ label: folder.name, folder }));
		const placeHolder = localize('pick folder', "Pick a folder to publish to GitHub");
		const pick = await vscode.window.showQuickPick(picks, { placeHolder });

		if (!pick) {
			return;
		}

		folder = pick.folder;
	}

	const quickpick = vscode.window.createQuickPick<vscode.QuickPickItem & { repo?: string, auth?: 'https' | 'ssh' }>();
	quickpick.ignoreFocusOut = true;

	quickpick.placeholder = 'Repository Name';
	quickpick.value = folder.name;
	quickpick.show();
	quickpick.busy = true;

	const octokit = await getOctokit();
	const user = await octokit.users.getAuthenticated({});
	const owner = user.data.login;
	quickpick.busy = false;

	let repo: string | undefined;

	const onDidChangeValue = async () => {
		const sanitizedRepo = sanitizeRepositoryName(quickpick.value);

		if (!sanitizedRepo) {
			quickpick.items = [];
		} else {
			quickpick.items = [{ label: `$(repo) Create private repository`, description: `$(github) ${owner}/${sanitizedRepo}`, alwaysShow: true, repo: sanitizedRepo }];
		}
	};

	onDidChangeValue();

	while (true) {
		const listener = quickpick.onDidChangeValue(onDidChangeValue);
		const pick = await getPick(quickpick);
		listener.dispose();

		repo = pick?.repo;

		if (repo) {
			try {
				quickpick.busy = true;
				await octokit.repos.get({ owner, repo: repo });
				quickpick.items = [{ label: `$(error) Repository already exists`, description: `$(github) ${owner}/${repo}`, alwaysShow: true }];
			} catch {
				break;
			} finally {
				quickpick.busy = false;
			}
		}
	}

	quickpick.dispose();

	if (!repo) {
		return;
	}

	const githubRepository = await vscode.window.withProgress({ location: vscode.ProgressLocation.Notification, cancellable: false, title: 'Publish to GitHub' }, async progress => {
		progress.report({ message: 'Creating private repository in GitHub', increment: 25 });

		const res = await octokit.repos.createForAuthenticatedUser({
			name: repo!,
			private: true
		});

		const createdGithubRepository = res.data;

		progress.report({ message: 'Creating first commit', increment: 25 });

		if (!repository) {
			repository = await gitAPI.init(folder.uri) || undefined;

			if (!repository) {
				return;
			}

			await repository.commit('first commit', { all: true });
		}

		progress.report({ message: 'Uploading files', increment: 25 });
		await repository.addRemote('origin', createdGithubRepository.clone_url);
		await repository.push('origin', 'master', true);

		return createdGithubRepository;
	});

	if (!githubRepository) {
		return;
	}

	const openInGitHub = 'Open In GitHub';
	const action = await vscode.window.showInformationMessage(`Successfully published the '${owner}/${repo}' repository on GitHub.`, openInGitHub);

	if (action === openInGitHub) {
		vscode.commands.executeCommand('vscode.open', vscode.Uri.parse(githubRepository.html_url));
	}
}