/**
 * @license
 * Copyright 2016-2020 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.
 */

// Imported here because it's needed for the setup
// of this action
import * as Bluebird from 'bluebird';

import * as dockerUtils from '../utils/docker';
import * as compose from '../utils/compose';
import { dockerignoreHelp, registrySecretsHelp } from '../utils/messages';
import { getBalenaSdk } from '../utils/lazy';

/**
 * Opts must be an object with the following keys:
 *   app: the app this build is for (optional)
 *   arch: the architecture to build for
 *   deviceType: the device type to build for
 *   buildEmulated
 *   buildOpts: arguments to forward to docker build command
 *
 * @param {import('docker-toolbelt')} docker
 * @param {import('../utils/logger')} logger
 * @param {import('../utils/compose-types').ComposeOpts} composeOpts
 * @param {any} opts
 */
const buildProject = function (docker, logger, composeOpts, opts) {
	const { loadProject } = require('../utils/compose_ts');
	return Bluebird.resolve(loadProject(logger, composeOpts))
		.then(function (project) {
			const appType = opts.app?.application_type?.[0];
			if (
				appType != null &&
				project.descriptors.length > 1 &&
				!appType.supports_multicontainer
			) {
				logger.logWarn(
					'Target application does not support multiple containers.\n' +
						'Continuing with build, but you will not be able to deploy.',
				);
			}

			return compose.buildProject(
				docker,
				logger,
				project.path,
				project.name,
				project.composition,
				opts.arch,
				opts.deviceType,
				opts.buildEmulated,
				opts.buildOpts,
				composeOpts.inlineLogs,
				composeOpts.convertEol,
				composeOpts.dockerfilePath,
				composeOpts.nogitignore,
				composeOpts.multiDockerignore,
			);
		})
		.then(function () {
			logger.outputDeferredMessages();
			logger.logSuccess('Build succeeded!');
		})
		.tapCatch(() => {
			logger.logError('Build failed');
		});
};

export const build = {
	signature: 'build [source]',
	description: 'Build a single image or a multicontainer project locally',
	primary: true,
	help: `\
Use this command to build an image or a complete multicontainer project with
the provided docker daemon in your development machine or balena device.
(See also the \`balena push\` command for the option of building images in the
balenaCloud build servers.)

You must provide either an application or a device-type/architecture pair to use
the balena Dockerfile pre-processor (e.g. Dockerfile.template -> Dockerfile).

This command will look into the given source directory (or the current working
directory if one isn't specified) for a docker-compose.yml file, and if found,
each service defined in the compose file will be built. If a compose file isn't
found, it will look for a Dockerfile[.template] file (or alternative Dockerfile
specified with the \`--dockerfile\` option), and if no dockerfile is found, it
will try to generate one.

${registrySecretsHelp}

${dockerignoreHelp}

Examples:

	$ balena build
	$ balena build ./source/
	$ balena build --deviceType raspberrypi3 --arch armv7hf --emulated
	$ balena build --application MyApp ./source/
	$ balena build --docker /var/run/docker.sock   # Linux, Mac
	$ balena build --docker //./pipe/docker_engine # Windows
	$ balena build --dockerHost my.docker.host --dockerPort 2376 --ca ca.pem --key key.pem --cert cert.pem\
`,
	options: dockerUtils.appendOptions(
		compose.appendOptions([
			{
				signature: 'arch',
				parameter: 'arch',
				description: 'The architecture to build for',
				alias: 'A',
			},
			{
				signature: 'deviceType',
				parameter: 'deviceType',
				description: 'The type of device this build is for',
				alias: 'd',
			},
			{
				signature: 'application',
				parameter: 'application',
				description: 'The target balena application this build is for',
				alias: 'a',
			},
		]),
	),
	action(params, options) {
		// compositions with many services trigger misleading warnings
		// @ts-ignore editing property that isn't typed but does exist
		require('events').defaultMaxListeners = 1000;

		const sdk = getBalenaSdk();
		const { ExpectedError } = require('../errors');
		const { checkLoggedIn } = require('../utils/patterns');
		const { validateProjectDirectory } = require('../utils/compose_ts');
		const helpers = require('../utils/helpers');
		const Logger = require('../utils/logger');

		const logger = Logger.getLogger();
		logger.logDebug('Parsing input...');

		// `build` accepts `[source]` as a parameter, but compose expects it
		// as an option. swap them here
		if (options.source == null) {
			options.source = params.source;
		}
		delete params.source;

		const { application, arch, deviceType } = options;

		return Bluebird.try(function () {
			if (
				(application == null && (arch == null || deviceType == null)) ||
				(application != null && (arch != null || deviceType != null))
			) {
				throw new ExpectedError(
					'You must specify either an application or an arch/deviceType pair to build for',
				);
			}
			if (application) {
				return checkLoggedIn();
			}
		})
			.then(() =>
				validateProjectDirectory(sdk, {
					dockerfilePath: options.dockerfile,
					noParentCheck: options['noparent-check'] || false,
					projectPath: options.source || '.',
					registrySecretsPath: options['registry-secrets'],
				}),
			)
			.then(function ({ dockerfilePath, registrySecrets }) {
				options.dockerfile = dockerfilePath;
				options['registry-secrets'] = registrySecrets;

				if (arch != null && deviceType != null) {
					return [undefined, arch, deviceType];
				} else {
					return helpers
						.getAppWithArch(application)
						.then((app) => [app, app.arch, app.device_type]);
				}
			})

			.then(function ([app, resolvedArch, resolvedDeviceType]) {
				return Promise.all([
					dockerUtils.getDocker(options),
					dockerUtils.generateBuildOpts(options),
					compose.generateOpts(options),
				]).then(([docker, buildOpts, composeOpts]) =>
					buildProject(docker, logger, composeOpts, {
						app,
						arch: resolvedArch,
						deviceType: resolvedDeviceType,
						buildEmulated: !!options.emulated,
						buildOpts,
					}),
				);
			});
	},
};