import MenuUtils from '@joplin/lib/services/commands/MenuUtils';
import ToolbarButtonUtils from '@joplin/lib/services/commands/ToolbarButtonUtils';
import CommandService, { CommandDeclaration, CommandRuntime } from '@joplin/lib/services/CommandService';
import KeymapService from '@joplin/lib/services/KeymapService';

const { asyncTest, setupDatabaseAndSynchronizer, switchClient, expectThrow, expectNotThrow } = require('./test-utils.js');

interface TestCommand {
	declaration: CommandDeclaration,
	runtime: CommandRuntime,
}

function newService():CommandService {
	const service = new CommandService();
	const mockStore = {
		getState: () => {
			return {};
		},
	};
	service.initialize(mockStore, true);
	return service;
}

function createCommand(name:string, options:any):TestCommand {
	const declaration:CommandDeclaration = {
		name: name,
	};

	const runtime:CommandRuntime = {
		execute: options.execute,
	};

	if (options.enabledCondition) runtime.enabledCondition = options.enabledCondition;

	return { declaration, runtime };
}

function registerCommand(service:CommandService, cmd:TestCommand) {
	service.registerDeclaration(cmd.declaration);
	service.registerRuntime(cmd.declaration.name, cmd.runtime);
}

describe('services_CommandService', function() {

	beforeEach(async (done) => {
		KeymapService.destroyInstance();
		KeymapService.instance().initialize();

		await setupDatabaseAndSynchronizer(1);
		await switchClient(1);
		done();
	});

	it('should create toolbar button infos from commands', asyncTest(async () => {
		const service = newService();
		const toolbarButtonUtils = new ToolbarButtonUtils(service);

		const executedCommands:string[] = [];

		registerCommand(service, createCommand('test1', {
			execute: () => {
				executedCommands.push('test1');
			},
		}));

		registerCommand(service, createCommand('test2', {
			execute: () => {
				executedCommands.push('test2');
			},
		}));

		const toolbarInfos = toolbarButtonUtils.commandsToToolbarButtons(['test1', 'test2'], {});

		await toolbarInfos[0].onClick();
		await toolbarInfos[1].onClick();

		expect(executedCommands.join('_')).toBe('test1_test2');
		expect(toolbarInfos[0].enabled).toBe(true);
		expect(toolbarInfos[1].enabled).toBe(true);
	}));

	it('should enable and disable toolbar buttons depending on state', asyncTest(async () => {
		const service = newService();
		const toolbarButtonUtils = new ToolbarButtonUtils(service);

		registerCommand(service, createCommand('test1', {
			execute: () => {},
			enabledCondition: 'oneNoteSelected',
		}));

		registerCommand(service, createCommand('test2', {
			execute: () => {},
			enabledCondition: 'multipleNotesSelected',
		}));

		const toolbarInfos = toolbarButtonUtils.commandsToToolbarButtons(['test1', 'test2'], {
			oneNoteSelected: false,
			multipleNotesSelected: true,
		});

		expect(toolbarInfos[0].enabled).toBe(false);
		expect(toolbarInfos[1].enabled).toBe(true);
	}));

	it('should enable commands by default', asyncTest(async () => {
		const service = newService();

		registerCommand(service, createCommand('test1', {
			execute: () => {},
		}));

		expect(service.isEnabled('test1', {})).toBe(true);
	}));

	it('should return the same toolbarButtons array if nothing has changed', asyncTest(async () => {
		const service = newService();
		const toolbarButtonUtils = new ToolbarButtonUtils(service);

		registerCommand(service, createCommand('test1', {
			execute: () => {},
			enabledCondition: 'cond1',
		}));

		registerCommand(service, createCommand('test2', {
			execute: () => {},
			enabledCondition: 'cond2',
		}));

		const toolbarInfos1 = toolbarButtonUtils.commandsToToolbarButtons(['test1', 'test2'], {
			cond1: true,
			cond2: false,
		});

		const toolbarInfos2 = toolbarButtonUtils.commandsToToolbarButtons(['test1', 'test2'], {
			cond1: true,
			cond2: false,
		});

		expect(toolbarInfos1).toBe(toolbarInfos2);
		expect(toolbarInfos1[0] === toolbarInfos2[0]).toBe(true);
		expect(toolbarInfos1[1] === toolbarInfos2[1]).toBe(true);

		const toolbarInfos3 =  toolbarButtonUtils.commandsToToolbarButtons(['test1', 'test2'], {
			cond1: true,
			cond2: true,
		});

		expect(toolbarInfos2 === toolbarInfos3).toBe(false);
		expect(toolbarInfos2[0] === toolbarInfos3[0]).toBe(true);
		expect(toolbarInfos2[1] === toolbarInfos3[1]).toBe(false);

		{
			expect(toolbarButtonUtils.commandsToToolbarButtons(['test1', '-', 'test2'], {
				cond1: true,
				cond2: false,
			})).toBe(toolbarButtonUtils.commandsToToolbarButtons(['test1', '-', 'test2'], {
				cond1: true,
				cond2: false,
			}));
		}
	}));

	it('should create menu items from commands', asyncTest(async () => {
		const service = newService();
		const utils = new MenuUtils(service);

		registerCommand(service, createCommand('test1', {
			execute: () => {},
		}));

		registerCommand(service, createCommand('test2', {
			execute: () => {},
		}));

		const clickedCommands:string[] = [];

		const onClick = (commandName:string) => {
			clickedCommands.push(commandName);
		};

		const menuItems = utils.commandsToMenuItems(['test1', 'test2'], onClick);

		menuItems.test1.click();
		menuItems.test2.click();

		expect(clickedCommands.join('_')).toBe('test1_test2');

		// Also check that the same commands always return strictly the same menu
		expect(utils.commandsToMenuItems(['test1', 'test2'], onClick)).toBe(utils.commandsToMenuItems(['test1', 'test2'], onClick));
	}));

	it('should give menu item props from state', asyncTest(async () => {
		const service = newService();
		const utils = new MenuUtils(service);

		registerCommand(service, createCommand('test1', {
			execute: () => {},
			enabledCondition: 'cond1',
		}));

		registerCommand(service, createCommand('test2', {
			execute: () => {},
			enabledCondition: 'cond2',
		}));

		{
			const menuItemProps = utils.commandsToMenuItemProps(['test1', 'test2'], {
				cond1: true,
				cond2: false,
			});

			expect(menuItemProps.test1.enabled).toBe(true);
			expect(menuItemProps.test2.enabled).toBe(false);
		}

		{
			const menuItemProps = utils.commandsToMenuItemProps(['test1', 'test2'], {
				cond1: true,
				cond2: true,
			});

			expect(menuItemProps.test1.enabled).toBe(true);
			expect(menuItemProps.test2.enabled).toBe(true);
		}

		expect(utils.commandsToMenuItemProps(['test1', 'test2'], { cond1: true, cond2: true }))
			.toBe(utils.commandsToMenuItemProps(['test1', 'test2'], { cond1: true, cond2: true }));
	}));

	it('should create stateful menu items', asyncTest(async () => {
		const service = newService();
		const utils = new MenuUtils(service);

		let propValue = null;

		registerCommand(service, createCommand('test1', {
			execute: (_context:any, greeting:string) => {
				propValue = greeting;
			},
		}));

		const menuItem = utils.commandToStatefulMenuItem('test1', 'hello');
		menuItem.click();

		expect(propValue).toBe('hello');
	}));

	it('should throw an error for invalid when clause keys in dev mode', asyncTest(async () => {
		const service = newService();

		registerCommand(service, createCommand('test1', {
			execute: () => {},
			enabledCondition: 'cond1 && cond2',
		}));

		await expectThrow(async () => service.isEnabled('test1', {}));
		await expectThrow(async () => service.isEnabled('test1', { cond1: true }));
		await expectNotThrow(async () => service.isEnabled('test1', { cond1: true, cond2: true }));
		await expectNotThrow(async () => service.isEnabled('test1', { cond1: true, cond2: false }));
	}));


});