/**
 * @license
 * Copyright 2020 Balena Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

// tslint:disable-next-line:no-var-requires
require('../config-tests'); // required for side effects

import { expect } from 'chai';
import { stripIndent } from 'common-tags';
import mock = require('mock-require');
import { fs } from 'mz';
import * as path from 'path';

import { BalenaAPIMock } from '../balena-api-mock';
import { expectStreamNoCRLF, testDockerBuildStream } from '../docker-build';
import { DockerMock, dockerResponsePath } from '../docker-mock';
import { cleanOutput, runCommand } from '../helpers';
import {
	ExpectedTarStreamFiles,
	ExpectedTarStreamFilesByService,
} from '../projects';

const repoPath = path.normalize(path.join(__dirname, '..', '..'));
const projectsPath = path.join(repoPath, 'tests', 'test-data', 'projects');

const commonResponseLines: { [key: string]: string[] } = {
	'build-POST.json': [
		'[Info] Building for amd64/nuc',
		'[Info] Docker Desktop detected (daemon architecture: "x86_64")',
		'[Info] Docker itself will determine and enable architecture emulation if required,',
		'[Info] without balena-cli intervention and regardless of the --emulated option.',
		'[Success] Build succeeded!',
	],
};

const commonQueryParams = [
	['t', '${tag}'],
	['buildargs', '{}'],
	['labels', ''],
];

const commonComposeQueryParams = [
	['t', '${tag}'],
	[
		'buildargs',
		'{"MY_VAR_1":"This is a variable","MY_VAR_2":"Also a variable"}',
	],
	['labels', ''],
];

describe('balena build', function() {
	let api: BalenaAPIMock;
	let docker: DockerMock;
	const isWindows = process.platform === 'win32';

	this.beforeEach(() => {
		api = new BalenaAPIMock();
		docker = new DockerMock();
		api.expectGetWhoAmI({ optional: true, persist: true });
		api.expectGetMixpanel({ optional: true });
		docker.expectGetPing();
		docker.expectGetVersion();
	});

	this.afterEach(() => {
		// Check all expected api calls have been made and clean up.
		api.done();
		docker.done();
	});

	it('should create the expected tar stream (single container)', async () => {
		const projectPath = path.join(projectsPath, 'no-docker-compose', 'basic');
		const expectedFiles: ExpectedTarStreamFiles = {
			'src/start.sh': { fileSize: 89, type: 'file' },
			'src/windows-crlf.sh': { fileSize: 70, type: 'file' },
			Dockerfile: { fileSize: 88, type: 'file' },
			'Dockerfile-alt': { fileSize: 30, type: 'file' },
		};
		const responseFilename = 'build-POST.json';
		const responseBody = await fs.readFile(
			path.join(dockerResponsePath, responseFilename),
			'utf8',
		);
		const expectedResponseLines = [
			...commonResponseLines[responseFilename],
			`[Info] No "docker-compose.yml" file found at "${projectPath}"`,
			`[Info] Creating default composition with source: "${projectPath}"`,
			'[Build] main Image size: 1.14 MB',
		];
		if (isWindows) {
			expectedResponseLines.push(
				`[Warn] CRLF (Windows) line endings detected in file: ${path.join(
					projectPath,
					'src',
					'windows-crlf.sh',
				)}`,
				'[Warn] Windows-format line endings were detected in some files. Consider using the `--convert-eol` option.',
			);
		}
		docker.expectGetInfo({});
		await testDockerBuildStream({
			commandLine: `build ${projectPath} --deviceType nuc --arch amd64 -G`,
			dockerMock: docker,
			expectedFilesByService: { main: expectedFiles },
			expectedQueryParamsByService: { main: commonQueryParams },
			expectedResponseLines,
			projectPath,
			responseBody,
			responseCode: 200,
			services: ['main'],
		});
	});

	it('should create the expected tar stream (--emulated)', async () => {
		const projectPath = path.join(projectsPath, 'no-docker-compose', 'basic');
		const transposedDockerfile =
			stripIndent`
			FROM busybox
			COPY [".balena/qemu-execve","/tmp/qemu-execve"]
			COPY ["./src","/usr/src/"]
			RUN ["/tmp/qemu-execve","-execve","/bin/sh","-c","chmod a+x /usr/src/*.sh"]
			CMD ["/usr/src/start.sh"]` + '\n';
		const expectedFiles: ExpectedTarStreamFiles = {
			'src/start.sh': { fileSize: 89, type: 'file' },
			'src/windows-crlf.sh': { fileSize: 70, type: 'file' },
			Dockerfile: {
				fileSize: transposedDockerfile.length,
				type: 'file',
				contents: transposedDockerfile,
			},
			'Dockerfile-alt': { fileSize: 30, type: 'file' },
		};
		const responseFilename = 'build-POST.json';
		const responseBody = await fs.readFile(
			path.join(dockerResponsePath, responseFilename),
			'utf8',
		);
		const expectedResponseLines = [
			`[Info] No "docker-compose.yml" file found at "${projectPath}"`,
			`[Info] Creating default composition with source: "${projectPath}"`,
			'[Info] Building for rpi/raspberry-pi',
			'[Info] Emulation is enabled',
			'[Build] main Image size: 1.14 MB',
			'[Success] Build succeeded!',
		];
		if (isWindows) {
			expectedResponseLines.push(
				`[Warn] CRLF (Windows) line endings detected in file: ${path.join(
					projectPath,
					'src',
					'windows-crlf.sh',
				)}`,
				'[Warn] Windows-format line endings were detected in some files. Consider using the `--convert-eol` option.',
			);
		}
		const arch = 'rpi';
		const deviceType = 'raspberry-pi';
		const fsModPath = 'mz/fs';
		const fsMod = await import(fsModPath);
		const qemuModPath = '../../build/utils/qemu';
		const qemuMod = require(qemuModPath);
		const qemuBinPath = await qemuMod.getQemuPath(arch);
		try {
			mock(fsModPath, {
				...fsMod,
				exists: async (p: string) =>
					p === qemuBinPath ? true : fsMod.exists(p),
			});
			mock(qemuModPath, {
				...qemuMod,
				copyQemu: async () => '',
			});
			mock.reRequire('../../build/utils/qemu');
			docker.expectGetInfo({ OperatingSystem: 'balenaOS 2.44.0+rev1' });
			await testDockerBuildStream({
				commandLine: `build ${projectPath} --emulated --deviceType ${deviceType} --arch ${arch} --nogitignore`,
				dockerMock: docker,
				expectedFilesByService: { main: expectedFiles },
				expectedQueryParamsByService: { main: commonQueryParams },
				expectedResponseLines,
				projectPath,
				responseBody,
				responseCode: 200,
				services: ['main'],
			});
		} finally {
			mock.stop(fsModPath);
			mock.stop(qemuModPath);
		}
	});

	it('should create the expected tar stream (single container, --convert-eol)', async () => {
		const projectPath = path.join(projectsPath, 'no-docker-compose', 'basic');
		const expectedFiles: ExpectedTarStreamFiles = {
			'src/start.sh': { fileSize: 89, type: 'file' },
			'src/windows-crlf.sh': {
				fileSize: isWindows ? 68 : 70,
				testStream: isWindows ? expectStreamNoCRLF : undefined,
				type: 'file',
			},
			Dockerfile: { fileSize: 88, type: 'file' },
			'Dockerfile-alt': { fileSize: 30, type: 'file' },
		};
		const responseFilename = 'build-POST.json';
		const responseBody = await fs.readFile(
			path.join(dockerResponsePath, responseFilename),
			'utf8',
		);
		const expectedResponseLines = [
			...commonResponseLines[responseFilename],
			`[Info] No "docker-compose.yml" file found at "${projectPath}"`,
			`[Info] Creating default composition with source: "${projectPath}"`,
			'[Build] main Image size: 1.14 MB',
		];
		if (isWindows) {
			expectedResponseLines.push(
				`[Info] Converting line endings CRLF -> LF for file: ${path.join(
					projectPath,
					'src',
					'windows-crlf.sh',
				)}`,
			);
		}
		docker.expectGetInfo({});
		await testDockerBuildStream({
			commandLine: `build ${projectPath} --deviceType nuc --arch amd64 --convert-eol`,
			dockerMock: docker,
			expectedFilesByService: { main: expectedFiles },
			expectedQueryParamsByService: { main: commonQueryParams },
			expectedResponseLines,
			projectPath,
			responseBody,
			responseCode: 200,
			services: ['main'],
		});
	});

	it('should create the expected tar stream (docker-compose)', async () => {
		const projectPath = path.join(projectsPath, 'docker-compose', 'basic');
		const service1Dockerfile = (
			await fs.readFile(
				path.join(projectPath, 'service1', 'Dockerfile.template'),
				'utf8',
			)
		).replace('%%BALENA_MACHINE_NAME%%', 'nuc');
		const expectedFilesByService: ExpectedTarStreamFilesByService = {
			service1: {
				Dockerfile: {
					contents: service1Dockerfile,
					fileSize: service1Dockerfile.length,
					type: 'file',
				},
				'Dockerfile.template': { fileSize: 144, type: 'file' },
				'file1.sh': { fileSize: 12, type: 'file' },
			},
			service2: {
				'Dockerfile-alt': { fileSize: 40, type: 'file' },
				'file2-crlf.sh': {
					fileSize: isWindows ? 12 : 14,
					testStream: isWindows ? expectStreamNoCRLF : undefined,
					type: 'file',
				},
			},
		};
		const responseFilename = 'build-POST.json';
		const responseBody = await fs.readFile(
			path.join(dockerResponsePath, responseFilename),
			'utf8',
		);
		const expectedQueryParamsByService = {
			service1: [
				['t', '${tag}'],
				[
					'buildargs',
					'{"MY_VAR_1":"This is a variable","MY_VAR_2":"Also a variable","SERVICE1_VAR":"This is a service specific variable"}',
				],
				['labels', ''],
			],
			service2: [...commonComposeQueryParams, ['dockerfile', 'Dockerfile-alt']],
		};
		const expectedResponseLines: string[] = [
			...commonResponseLines[responseFilename],
			`[Build] service1 Image size: 1.14 MB`,
			`[Build] service2 Image size: 1.14 MB`,
		];
		if (isWindows) {
			expectedResponseLines.push(
				`[Info] Converting line endings CRLF -> LF for file: ${path.join(
					projectPath,
					'service2',
					'file2-crlf.sh',
				)}`,
			);
		}
		docker.expectGetInfo({});
		await testDockerBuildStream({
			commandLine: `build ${projectPath} --deviceType nuc --arch amd64 --convert-eol -G`,
			dockerMock: docker,
			expectedFilesByService,
			expectedQueryParamsByService,
			expectedResponseLines,
			projectPath,
			responseBody,
			responseCode: 200,
			services: ['service1', 'service2'],
		});
	});
});

describe('balena build: project validation', function() {
	it('should raise ExpectedError if a Dockerfile cannot be found', async () => {
		const projectPath = path.join(
			projectsPath,
			'docker-compose',
			'basic',
			'service2',
		);
		const expectedErrorLines = [
			'Error: no "Dockerfile[.*]", "docker-compose.yml" or "package.json" file',
			`found in source folder "${projectPath}"`,
		];

		const { out, err } = await runCommand(`build ${projectPath} -a testApp`);
		expect(
			cleanOutput(err).map(line => line.replace(/\s{2,}/g, ' ')),
		).to.include.members(expectedErrorLines);
		expect(out).to.be.empty;
	});
});