import { stripIndent } from 'common-tags';
import { child_process, fs } from 'mz';
import { SinonStub, stub, spy, SinonSpy } from 'sinon';

import { expect } from './lib/chai-config';
import * as deviceConfig from '../src/device-config';
import * as fsUtils from '../src/lib/fs-utils';
import * as logger from '../src/logger';
import { Extlinux } from '../src/config/backends/extlinux';
import { ConfigTxt } from '../src/config/backends/config-txt';
import { Odmdata } from '../src/config/backends/odmdata';

import prepare = require('./lib/prepare');

const extlinuxBackend = new Extlinux();
const configTxtBackend = new ConfigTxt();
const odmdataBackend = new Odmdata();

describe('Device Backend Config', () => {
	let logSpy: SinonSpy;

	before(async () => {
		logSpy = spy(logger, 'logSystemMessage');
		await prepare();
	});

	after(() => {
		logSpy.restore();
	});

	afterEach(() => {
		logSpy.resetHistory();
	});

	it('correctly parses a config.txt file', async () => {
		// Will try to parse /test/data/mnt/boot/config.txt
		await expect(
			// @ts-ignore accessing private value
			deviceConfig.getBootConfig(configTxtBackend),
		).to.eventually.deep.equal({
			HOST_CONFIG_dtparam: '"i2c_arm=on","spi=on","audio=on"',
			HOST_CONFIG_enable_uart: '1',
			HOST_CONFIG_disable_splash: '1',
			HOST_CONFIG_avoid_warnings: '1',
			HOST_CONFIG_gpu_mem: '16',
		});

		// Stub readFile to return a config that has initramfs and array variables
		stub(fs, 'readFile').resolves(stripIndent`
			initramfs initramf.gz 0x00800000
			dtparam=i2c=on
			dtparam=audio=on
			dtoverlay=ads7846
			dtoverlay=lirc-rpi,gpio_out_pin=17,gpio_in_pin=13
			foobar=baz
		`);

		await expect(
			// @ts-ignore accessing private value
			deviceConfig.getBootConfig(configTxtBackend),
		).to.eventually.deep.equal({
			HOST_CONFIG_initramfs: 'initramf.gz 0x00800000',
			HOST_CONFIG_dtparam: '"i2c=on","audio=on"',
			HOST_CONFIG_dtoverlay:
				'"ads7846","lirc-rpi,gpio_out_pin=17,gpio_in_pin=13"',
			HOST_CONFIG_foobar: 'baz',
		});

		// Restore stub
		(fs.readFile as SinonStub).restore();
	});

	it('does not allow setting forbidden keys', async () => {
		const current = {
			HOST_CONFIG_initramfs: 'initramf.gz 0x00800000',
			HOST_CONFIG_dtparam: '"i2c=on","audio=on"',
			HOST_CONFIG_dtoverlay:
				'"ads7846","lirc-rpi,gpio_out_pin=17,gpio_in_pin=13"',
			HOST_CONFIG_foobar: 'baz',
		};
		// Create another target with only change being initramfs which is blacklisted
		const target = {
			...current,
			HOST_CONFIG_initramfs: 'initramf.gz 0x00810000',
		};

		expect(() =>
			// @ts-ignore accessing private value
			deviceConfig.bootConfigChangeRequired(configTxtBackend, current, target),
		).to.throw('Attempt to change blacklisted config value initramfs');

		// Check if logs were called
		expect(logSpy).to.be.calledOnce;
		expect(logSpy).to.be.calledWith(
			'Attempt to change blacklisted config value initramfs',
			{
				error: 'Attempt to change blacklisted config value initramfs',
			},
			'Apply boot config error',
		);
	});

	it('does not try to change config.txt if it should not change', async () => {
		const current = {
			HOST_CONFIG_initramfs: 'initramf.gz 0x00800000',
			HOST_CONFIG_dtparam: '"i2c=on","audio=on"',
			HOST_CONFIG_dtoverlay:
				'"ads7846","lirc-rpi,gpio_out_pin=17,gpio_in_pin=13"',
			HOST_CONFIG_foobar: 'baz',
		};
		const target = {
			HOST_CONFIG_initramfs: 'initramf.gz 0x00800000',
			HOST_CONFIG_dtparam: '"i2c=on","audio=on"',
			HOST_CONFIG_dtoverlay:
				'"ads7846","lirc-rpi,gpio_out_pin=17,gpio_in_pin=13"',
			HOST_CONFIG_foobar: 'baz',
		};

		expect(
			// @ts-ignore accessing private value
			deviceConfig.bootConfigChangeRequired(configTxtBackend, current, target),
		).to.equal(false);
		expect(logSpy).to.not.be.called;
	});

	it('writes the target config.txt', async () => {
		stub(fsUtils, 'writeFileAtomic').resolves();
		stub(child_process, 'exec').resolves();
		const current = {
			HOST_CONFIG_initramfs: 'initramf.gz 0x00800000',
			HOST_CONFIG_dtparam: '"i2c=on","audio=on"',
			HOST_CONFIG_dtoverlay:
				'"ads7846","lirc-rpi,gpio_out_pin=17,gpio_in_pin=13"',
			HOST_CONFIG_foobar: 'baz',
		};
		const target = {
			HOST_CONFIG_initramfs: 'initramf.gz 0x00800000',
			HOST_CONFIG_dtparam: '"i2c=on","audio=off"',
			HOST_CONFIG_dtoverlay: '"lirc-rpi,gpio_out_pin=17,gpio_in_pin=13"',
			HOST_CONFIG_foobar: 'bat',
			HOST_CONFIG_foobaz: 'bar',
		};

		expect(
			// @ts-ignore accessing private value
			deviceConfig.bootConfigChangeRequired(configTxtBackend, current, target),
		).to.equal(true);

		// @ts-ignore accessing private value
		await deviceConfig.setBootConfig(configTxtBackend, target);
		expect(child_process.exec).to.be.calledOnce;
		expect(logSpy).to.be.calledTwice;
		expect(logSpy.getCall(1).args[2]).to.equal('Apply boot config success');
		expect(fsUtils.writeFileAtomic).to.be.calledWith(
			'./test/data/mnt/boot/config.txt',
			stripIndent`
				initramfs initramf.gz 0x00800000
				dtparam=i2c=on
				dtparam=audio=off
				dtoverlay=lirc-rpi,gpio_out_pin=17,gpio_in_pin=13
				foobar=bat
				foobaz=bar
			` + '\n', // add newline because stripIndent trims last newline
		);

		// Restore stubs
		(fsUtils.writeFileAtomic as SinonStub).restore();
		(child_process.exec as SinonStub).restore();
	});

	it('accepts RESIN_ and BALENA_ variables', async () => {
		return expect(
			deviceConfig.formatConfigKeys({
				FOO: 'bar', // should be removed
				BAR: 'baz', // should be removed
				RESIN_SUPERVISOR_LOCAL_MODE: 'false', // any device
				BALENA_SUPERVISOR_OVERRIDE_LOCK: 'false', // any device
				BALENA_SUPERVISOR_POLL_INTERVAL: '100', // any device
				RESIN_HOST_CONFIG_dtparam: 'i2c_arm=on","spi=on","audio=on', // config.txt backend
				RESIN_HOST_CONFIGFS_ssdt: 'spidev1.0', // configfs backend
				BALENA_HOST_EXTLINUX_isolcpus: '1,2,3', // extlinux backend
			}),
		).to.deep.equal({
			SUPERVISOR_LOCAL_MODE: 'false',
			SUPERVISOR_OVERRIDE_LOCK: 'false',
			SUPERVISOR_POLL_INTERVAL: '100',
			HOST_CONFIG_dtparam: 'i2c_arm=on","spi=on","audio=on',
			HOST_CONFIGFS_ssdt: 'spidev1.0',
			HOST_EXTLINUX_isolcpus: '1,2,3',
		});
	});

	it('returns default configuration values', () => {
		const conf = deviceConfig.getDefaults();
		return expect(conf).to.deep.equal({
			HOST_FIREWALL_MODE: 'off',
			HOST_DISCOVERABILITY: 'true',
			SUPERVISOR_VPN_CONTROL: 'true',
			SUPERVISOR_POLL_INTERVAL: '60000',
			SUPERVISOR_LOCAL_MODE: 'false',
			SUPERVISOR_CONNECTIVITY_CHECK: 'true',
			SUPERVISOR_LOG_CONTROL: 'true',
			SUPERVISOR_DELTA: 'false',
			SUPERVISOR_DELTA_REQUEST_TIMEOUT: '30000',
			SUPERVISOR_DELTA_APPLY_TIMEOUT: '0',
			SUPERVISOR_DELTA_RETRY_COUNT: '30',
			SUPERVISOR_DELTA_RETRY_INTERVAL: '10000',
			SUPERVISOR_DELTA_VERSION: '2',
			SUPERVISOR_INSTANT_UPDATE_TRIGGER: 'true',
			SUPERVISOR_OVERRIDE_LOCK: 'false',
			SUPERVISOR_PERSISTENT_LOGGING: 'false',
		});
	});

	describe('Extlinux files', () => {
		it('should correctly write to extlinux.conf files', async () => {
			stub(fsUtils, 'writeFileAtomic').resolves();
			stub(child_process, 'exec').resolves();

			const current = {};
			const target = {
				HOST_EXTLINUX_isolcpus: '2',
				HOST_EXTLINUX_fdt: '/boot/mycustomdtb.dtb',
			};

			expect(
				// @ts-ignore accessing private value
				deviceConfig.bootConfigChangeRequired(extlinuxBackend, current, target),
			).to.equal(true);

			// @ts-ignore accessing private value
			await deviceConfig.setBootConfig(extlinuxBackend, target);
			expect(child_process.exec).to.be.calledOnce;
			expect(logSpy).to.be.calledTwice;
			expect(logSpy.getCall(1).args[2]).to.equal('Apply boot config success');
			expect(fsUtils.writeFileAtomic).to.be.calledWith(
				'./test/data/mnt/boot/extlinux/extlinux.conf',
				stripIndent`
					DEFAULT primary
					TIMEOUT 30
					MENU TITLE Boot Options
					LABEL primary
					MENU LABEL primary Image
					LINUX /Image
					APPEND \${cbootargs} \${resin_kernel_root} ro rootwait isolcpus=2
					FDT /boot/mycustomdtb.dtb
				` + '\n', // add newline because stripIndent trims last newline
			);

			// Restore stubs
			(fsUtils.writeFileAtomic as SinonStub).restore();
			(child_process.exec as SinonStub).restore();
		});
	});

	describe('Balena fin', () => {
		it('should always add the balena-fin dtoverlay', () => {
			expect(deviceConfig.ensureRequiredOverlay('fincm3', {})).to.deep.equal({
				dtoverlay: ['balena-fin'],
			});

			expect(
				deviceConfig.ensureRequiredOverlay('fincm3', {
					test: '123',
					test2: ['123'],
					test3: ['123', '234'],
				}),
			).to.deep.equal({
				test: '123',
				test2: ['123'],
				test3: ['123', '234'],
				dtoverlay: ['balena-fin'],
			});
			expect(
				deviceConfig.ensureRequiredOverlay('fincm3', {
					dtoverlay: 'test',
				}),
			).to.deep.equal({ dtoverlay: ['test', 'balena-fin'] });
			expect(
				deviceConfig.ensureRequiredOverlay('fincm3', {
					dtoverlay: ['test'],
				}),
			).to.deep.equal({ dtoverlay: ['test', 'balena-fin'] });
		});

		it('should not cause a config change when the cloud does not specify the balena-fin overlay', () => {
			expect(
				deviceConfig.bootConfigChangeRequired(
					configTxtBackend,
					{ HOST_CONFIG_dtoverlay: '"test","balena-fin"' },
					{ HOST_CONFIG_dtoverlay: '"test"' },
					'fincm3',
				),
			).to.equal(false);

			expect(
				deviceConfig.bootConfigChangeRequired(
					configTxtBackend,
					{ HOST_CONFIG_dtoverlay: '"test","balena-fin"' },
					{ HOST_CONFIG_dtoverlay: 'test' },
					'fincm3',
				),
			).to.equal(false);

			expect(
				deviceConfig.bootConfigChangeRequired(
					configTxtBackend,
					{ HOST_CONFIG_dtoverlay: '"test","test2","balena-fin"' },
					{ HOST_CONFIG_dtoverlay: '"test","test2"' },
					'fincm3',
				),
			).to.equal(false);
		});
	});

	describe('ODMDATA', () => {
		it('requires change when target is different', () => {
			expect(
				deviceConfig.bootConfigChangeRequired(
					odmdataBackend,
					{ HOST_ODMDATA_configuration: '2' },
					{ HOST_ODMDATA_configuration: '5' },
					'jetson-tx2',
				),
			).to.equal(true);
		});
		it('requires change when no target is set', () => {
			expect(
				deviceConfig.bootConfigChangeRequired(
					odmdataBackend,
					{ HOST_ODMDATA_configuration: '2' },
					{},
					'jetson-tx2',
				),
			).to.equal(false);
		});
	});

	// describe('ConfigFS', () => {
	// 	const upboardConfig = new DeviceConfig();
	// 	let upboardConfigBackend: ConfigBackend | null;

	// 	before(async () => {
	// 		stub(child_process, 'exec').resolves();
	// 		stub(fs, 'exists').resolves(true);
	// 		stub(fs, 'mkdir').resolves();
	// 		stub(fs, 'readdir').resolves([]);
	// 		stub(fsUtils, 'writeFileAtomic').resolves();

	// 		stub(fs, 'readFile').callsFake(file => {
	// 			if (file === 'test/data/mnt/boot/configfs.json') {
	// 				return Promise.resolve(
	// 					JSON.stringify({
	// 						ssdt: ['spidev1,1'],
	// 					}),
	// 				);
	// 			}
	// 			return Promise.resolve('');
	// 		});

	// 		stub(config, 'get').callsFake(key => {
	// 			return Promise.try(() => {
	// 				if (key === 'deviceType') {
	// 					return 'up-board';
	// 				}
	// 				throw new Error('Unknown fake config key');
	// 			});
	// 		});

	// 		// @ts-ignore accessing private value
	// 		upboardConfigBackend = await upboardConfig.getConfigBackend();
	// 		expect(upboardConfigBackend).is.not.null;
	// 		expect((child_process.exec as SinonSpy).callCount).to.equal(
	// 			3,
	// 			'exec not called enough times',
	// 		);
	// 	});

	// 	after(() => {
	// 		(child_process.exec as SinonStub).restore();
	// 		(fs.exists as SinonStub).restore();
	// 		(fs.mkdir as SinonStub).restore();
	// 		(fs.readdir as SinonStub).restore();
	// 		(fs.readFile as SinonStub).restore();
	// 		(fsUtils.writeFileAtomic as SinonStub).restore();
	// 		(config.get as SinonStub).restore();
	// 	});

	// 	it('should correctly load the configfs.json file', () => {
	// 		expect(child_process.exec).to.be.calledWith('modprobe acpi_configfs');
	// 		expect(child_process.exec).to.be.calledWith(
	// 			'cat test/data/boot/acpi-tables/spidev1,1.aml > test/data/sys/kernel/config/acpi/table/spidev1,1/aml',
	// 		);
	// 		expect((fs.exists as SinonSpy).callCount).to.equal(2);
	// 		expect((fs.readFile as SinonSpy).callCount).to.equal(4);
	// 	});

	// 	it('should correctly write the configfs.json file', async () => {
	// 		const current = {};
	// 		const target = {
	// 			HOST_CONFIGFS_ssdt: 'spidev1,1',
	// 		};

	// 		(child_process.exec as SinonSpy).resetHistory();
	// 		(fs.exists as SinonSpy).resetHistory();
	// 		(fs.mkdir as SinonSpy).resetHistory();
	// 		(fs.readdir as SinonSpy).resetHistory();
	// 		(fs.readFile as SinonSpy).resetHistory();

	// 		// @ts-ignore accessing private value
	// 		upboardConfig.bootConfigChangeRequired(upboardConfigBackend, current, target);
	// 		// @ts-ignore accessing private value
	// 		await upboardConfig.setBootConfig(upboardConfigBackend, target);

	// 		expect(child_process.exec).to.be.calledOnce;
	// 		expect(fsUtils.writeFileAtomic).to.be.calledWith(
	// 			'test/data/mnt/boot/configfs.json',
	// 			JSON.stringify({
	// 				ssdt: ['spidev1,1'],
	// 			}),
	// 		);
	// 		expect(logSpy).to.be.calledTwice;
	// 		expect(logSpy.getCall(1).args[2]).to.equal('Apply boot config success');
	// 	});
	// });

	// // This will require stubbing device.reboot, gosuper.post, config.get/set
	// it('applies the target state');
});