import CommandService, { CommandRuntime, CommandDeclaration, CommandContext } from '@joplin/lib/services/CommandService';
import InteropService from '@joplin/lib/services/interop/InteropService';
import { FileSystemItem, ImportModuleOutputFormat, ModuleType } from '@joplin/lib/services/interop/types';
import bridge from '../../../services/bridge';
import { WindowControl } from '../utils/useWindowControl';
import { _ } from '@joplin/lib/locale';
import makeDiscourseDebugUrl from '@joplin/lib/makeDiscourseDebugUrl';
import PluginService from '@joplin/lib/services/plugins/PluginService';
import Setting from '@joplin/lib/models/Setting';
import { PackageInfo } from '@joplin/lib/versionInfo';
import shim from '@joplin/lib/shim';
import { ImportModule } from '@joplin/lib/services/interop/Module';
import { isRecoverableError } from '@joplin/lib/import-enex';
import Logger from '@joplin/utils/Logger';
import { Dispatch } from 'redux';
import { MasterKeyEntity } from '@joplin/lib/services/e2ee/types';
import { promptForImportedNoteLockKey } from '@joplin/lib/services/noteLock/noteLockPrompts';
import noteLockPrompts from '../../../utils/noteLockPrompts';
import { ErrorCode } from '@joplin/lib/errors';
const packageInfo: PackageInfo = require('../../../packageInfo.js');

const logger = Logger.create('importFrom');

const makeImportNoteLockKeyHandler = (modalMessage: string, dispatch: Dispatch) => async (backupKey: MasterKeyEntity) => {
	// The password prompts are DOM dialogs and would render behind the import modal overlay.
	void CommandService.instance().execute('hideModalMessage');
	try {
		return await promptForImportedNoteLockKey(backupKey, noteLockPrompts(dispatch));
	} finally {
		void CommandService.instance().execute('showModalMessage', modalMessage);
	}
};

export const declaration: CommandDeclaration = {
	name: 'importFrom',
	label: () => _('Import...'),
};

export interface ImportCommandOptions {
	sourcePath: string|undefined;
	sourceType: FileSystemItem;
	destinationFolderId: string|null;
	importFormat: string;
	outputFormat: ImportModuleOutputFormat;
}

const findImportModule = async (commandOptions: ImportCommandOptions|null, control: WindowControl) => {
	if (commandOptions) {
		const module = InteropService.instance().findModuleByFormat(
			ModuleType.Importer, commandOptions.importFormat, commandOptions.sourceType, commandOptions.outputFormat);
		if (module) {
			return module as ImportModule;
		}
	}

	const importModules = InteropService.instance().modules().filter(module => module.type === ModuleType.Importer) as ImportModule[];
	return await control.showPrompt({
		label: _('Select the type of file to be imported:'),
		value: '',
		suggestions: importModules.map(module => {
			const label = module.fullLabel();
			return {
				key: `${module.type}--${label}`,
				value: module,
				label: module.fullLabel(),
			};
		}),
	});
};

const promptForSourcePath = async (module: ImportModule, sourceType: FileSystemItem|undefined) => {
	if (!sourceType) {
		if (!module.sources.includes(FileSystemItem.Directory)) {
			sourceType = FileSystemItem.File;
		}
		if (!module.sources.includes(FileSystemItem.File)) {
			sourceType = FileSystemItem.Directory;
		}
	}
	if (sourceType === FileSystemItem.File) {
		return await bridge().showOpenDialog({
			filters: [{ name: module.description, extensions: module.fileExtensions }],
		});
	} else if (sourceType === FileSystemItem.Directory) {
		return await bridge().showOpenDialog({
			properties: ['openDirectory', 'createDirectory'],
		});
	} else {
		return await bridge().showOpenDialog({
			properties: ['openDirectory', 'openFile'],
		});
	}
};

export const runtime = (control: WindowControl): CommandRuntime => {
	return {
		// Since this can be run from "go to anything", partialOptions needs to support being null or empty.
		execute: async (context: CommandContext, options: ImportCommandOptions|undefined) => {
			const importModule = await findImportModule(options, control);
			if (!importModule) return null; // E.g. if cancelled

			let sourcePath = options?.sourcePath ?? await promptForSourcePath(importModule, options?.sourceType);
			if (Array.isArray(sourcePath)) {
				sourcePath = sourcePath[0];
			}
			// Handle the case where the directory picker action was cancelled
			if (!sourcePath) return null;

			if (!options) {
				const isDirectory = await shim.fsDriver().isDirectory(sourcePath);
				const importsMultipleNotes = importModule.isNoteArchive || isDirectory;

				const destinationFolderId = importsMultipleNotes ? null : context.state.selectedFolderId;
				const importFormat = importModule.format;
				const outputFormat = importModule.outputFormat;
				options = {
					sourcePath,
					destinationFolderId,
					importFormat,
					outputFormat,
					sourceType: isDirectory ? FileSystemItem.Directory : FileSystemItem.File,
				};
			}

			if (options.importFormat === 'one' && !shim.isWindows()) {
				const response = bridge().showMessageBox(
					_('This notebook contains Windows-specific files. For maximum compatibility, consider importing the notebook from Windows.'),
					{
						type: 'warning',
						buttons: [_('Import anyway'), _('Cancel')],
						defaultId: 0,
						cancelId: 1,
					},
				);
				if (response === 1) return null;
			}

			const modalMessage = _('Importing from "%s" as "%s" format. Please wait...', sourcePath, options.importFormat);
			void CommandService.instance().execute('showModalMessage', modalMessage);

			const errors: (string|Error)[] = [];

			const importOptions = {
				path: sourcePath,
				format: options.importFormat,
				outputFormat: options.outputFormat,
				onProgress: (status: Record<string, unknown>) => {
					const statusStrings: string[] = Object.keys(status).map((key: string) => {
						return `${key}: ${status[key]}`;
					});

					void CommandService.instance().execute('showModalMessage', `${modalMessage}\n\n${statusStrings.join('\n')}`);
				},
				onError: (error: string|Error) => {
					// Recovered errors are logged but not reported, since the
					// notes were imported successfully anyway.
					if (!isRecoverableError(error)) errors.push(error);
					console.warn(error);
				},
				destinationFolderId: options.destinationFolderId,
				onNoteLockKey: makeImportNoteLockKeyHandler(modalMessage, context.dispatch),
			};

			const service = InteropService.instance();
			try {
				const result = await service.import(importOptions);
				// eslint-disable-next-line no-console
				console.info('Import result: ', result);
			} catch (error) {
				if (error.code !== ErrorCode.Cancelled) {
					logger.error(error);
					bridge().showErrorMessageBox(error.message);
				}
			}

			void CommandService.instance().execute('hideModalMessage');

			if (errors.length) {
				const response = bridge().showErrorMessageBox('There were some errors importing the notes - check the console for more details.\n\nPlease consider sending a bug report to the forum!', {
					buttons: [_('Close'), _('Send bug report')],
				});

				context.dispatch({ type: 'NOTE_DEVTOOLS_SET', value: true });

				if (response === 1) {
					const url = makeDiscourseDebugUrl(
						`Error importing notes from format: ${options.importFormat}`,
						`- Input format: ${options.importFormat}\n- Output format: ${options.outputFormat}`,
						errors,
						packageInfo,
						PluginService.instance(),
						Setting.value('plugins.states'),
					);

					void bridge().openExternal(url);
				}
			}
		},
		enabledCondition: '',
	};
};