import Note from '../../models/Note';
import { encryptionService, loadEncryptionMasterKey, msleep, resourceService, setupDatabaseAndSynchronizer, supportDir, switchClient } from '../../testing/test-utils';
import ShareService from './ShareService';
import reducer, { defaultState } from '../../reducer';
import { createStore } from 'redux';
import { NoteEntity } from '../database/types';
import Folder from '../../models/Folder';
import { setEncryptionEnabled, setPpk } from '../synchronizer/syncInfoUtils';
import { generateKeyPair } from '../e2ee/ppk';
import MasterKey from '../../models/MasterKey';
import { MasterKeyEntity } from '../e2ee/types';
import { loadMasterKeysFromSettings, setupAndEnableEncryption, updateMasterPassword } from '../e2ee/utils';
import Logger, { LogLevel } from '../../Logger';
import shim from '../../shim';
import Resource from '../../models/Resource';
import { readFile } from 'fs-extra';
import BaseItem from '../../models/BaseItem';

interface TestShareFolderServiceOptions {
	master_key_id?: string;
}

const testImagePath = `${supportDir}/photo.jpg`;

const testReducer = (state: any = defaultState, action: any) => {
	return reducer(state, action);
};

function mockService(api: any) {
	const service = new ShareService();
	const store = createStore(testReducer as any);
	service.initialize(store, encryptionService(), api);
	return service;
}

describe('ShareService', () => {

	beforeEach(async () => {
		await setupDatabaseAndSynchronizer(1);
		await switchClient(1);
	});

	it('should not change the note user timestamps when sharing or unsharing', async () => {
		let note = await Note.save({});
		const service = mockService({
			exec: (method: string, path = '', _query: Record<string, any> = null, _body: any = null, _headers: any = null, _options: any = null): Promise<any> => {
				if (method === 'GET' && path === 'api/shares') return { items: [] } as any;
				return null;
			},
			personalizedUserContentBaseUrl(_userId: string) {

			},
		});
		await msleep(1);
		await service.shareNote(note.id, false);

		function checkTimestamps(previousNote: NoteEntity, newNote: NoteEntity) {
			// After sharing or unsharing, only the updated_time property should
			// be updated, for sync purposes. All other timestamps shouldn't
			// change.
			expect(previousNote.user_created_time).toBe(newNote.user_created_time);
			expect(previousNote.user_updated_time).toBe(newNote.user_updated_time);
			expect(previousNote.updated_time < newNote.updated_time).toBe(true);
			expect(previousNote.created_time).toBe(newNote.created_time);
		}

		{
			const noteReloaded = await Note.load(note.id);
			checkTimestamps(note, noteReloaded);
			note = noteReloaded;
		}

		await msleep(1);
		await service.unshareNote(note.id);

		{
			const noteReloaded = await Note.load(note.id);
			checkTimestamps(note, noteReloaded);
		}
	});

	function testShareFolderService(extraExecHandlers: Record<string, Function> = {}, options: TestShareFolderServiceOptions = {}) {
		return mockService({
			exec: async (method: string, path: string, query: Record<string, any>, body: any) => {
				if (extraExecHandlers[`${method} ${path}`]) return extraExecHandlers[`${method} ${path}`](query, body);

				if (method === 'GET' && path === 'api/shares') {
					return {
						items: [
							{
								id: 'share_1',
								master_key_id: options.master_key_id,
							},
						],
					};
				}

				if (method === 'POST' && path === 'api/shares') {
					return {
						id: 'share_1',
					};
				}

				throw new Error(`Unhandled: ${method} ${path}`);
			},
		});
	}

	async function testShareFolder(service: ShareService) {
		const folder = await Folder.save({});
		let note = await Note.save({ parent_id: folder.id });
		note = await shim.attachFileToNote(note, testImagePath);
		const resourceId = (await Note.linkedResourceIds(note.body))[0];
		const resource = await Resource.load(resourceId);

		await resourceService().indexNoteResources();

		const share = await service.shareFolder(folder.id);
		expect(share.id).toBe('share_1');
		expect((await Folder.load(folder.id)).share_id).toBe('share_1');
		expect((await Note.load(note.id)).share_id).toBe('share_1');
		expect((await Resource.load(resource.id)).share_id).toBe('share_1');

		return { share, folder, note, resource };
	}

	it('should share a folder', async () => {
		await testShareFolder(testShareFolderService());
	});

	it('should share a folder - E2EE', async () => {
		const masterKey = await loadEncryptionMasterKey();
		await setupAndEnableEncryption(encryptionService(), masterKey, '111111');
		const ppk = await generateKeyPair(encryptionService(), '111111');
		setPpk(ppk);

		let shareService = testShareFolderService();

		expect(await MasterKey.count()).toBe(1);

		let { folder, note, resource } = await testShareFolder(shareService);
		await Folder.updateAllShareIds(resourceService());

		// The share service should automatically create a new encryption key
		// specifically for that shared folder
		expect(await MasterKey.count()).toBe(2);

		folder = await Folder.load(folder.id);
		note = await Note.load(note.id);
		resource = await Resource.load(resource.id);

		// The key that is not the master key is the folder key
		const folderKey = (await MasterKey.all()).find(mk => mk.id !== masterKey.id);

		// Double-check that it's going to encrypt the folder using the shared
		// key (and not the user's own master key)
		expect(folderKey.id).not.toBe(masterKey.id);
		expect(folder.master_key_id).toBe(folderKey.id);

		await loadMasterKeysFromSettings(encryptionService());

		// Reload the service so that the mocked calls use the newly created key
		shareService = testShareFolderService({}, { master_key_id: folderKey.id });

		BaseItem.shareService_ = shareService;
		Resource.shareService_ = shareService;

		try {
			const serializedNote = await Note.serializeForSync(note);
			expect(serializedNote).toContain(folderKey.id);

			// The resource should be encrypted using the above key (if it is,
			// the key ID will be in the header).
			const result = await Resource.fullPathForSyncUpload(resource);
			const content = await readFile(result.path, 'utf8');
			expect(content).toContain(folderKey.id);
		} finally {
			BaseItem.shareService_ = shareService;
			Resource.shareService_ = null;
		}
	});

	it('should add a recipient', async () => {
		setEncryptionEnabled(true);
		await updateMasterPassword('', '111111');
		const ppk = await generateKeyPair(encryptionService(), '111111');
		setPpk(ppk);
		const recipientPpk = await generateKeyPair(encryptionService(), '222222');
		expect(ppk.id).not.toBe(recipientPpk.id);

		let uploadedEmail = '';
		let uploadedMasterKey: MasterKeyEntity = null;

		const service = testShareFolderService({
			'POST api/shares': (_query: Record<string, any>, body: any) => {
				return {
					id: 'share_1',
					master_key_id: body.master_key_id,
				};
			},
			'GET api/users/toto%40example.com/public_key': async (_query: Record<string, any>, _body: any) => {
				return recipientPpk;
			},
			'POST api/shares/share_1/users': async (_query: Record<string, any>, body: any) => {
				uploadedEmail = body.email;
				uploadedMasterKey = JSON.parse(body.master_key);
			},
		});

		const { share } = await testShareFolder(service);

		await service.addShareRecipient(share.id, share.master_key_id, 'toto@example.com');

		expect(uploadedEmail).toBe('toto@example.com');

		const content = JSON.parse(uploadedMasterKey.content);
		expect(content.ppkId).toBe(recipientPpk.id);
	});

	it('should leave folders that are no longer with the user', async () => {
		// `checkShareConsistency` will emit a warning so we need to silent it
		// in tests.
		const previousLogLevel = Logger.globalLogger.setLevel(LogLevel.Error);

		const service = testShareFolderService({
			'GET api/shares': async (_query: Record<string, any>, _body: any): Promise<any> => {
				return {
					items: [],
					has_more: false,
				};
			},
		});

		const folder = await Folder.save({ share_id: 'nolongershared' });
		await service.checkShareConsistency();
		expect(await Folder.load(folder.id)).toBeFalsy();

		Logger.globalLogger.setLevel(previousLogLevel);
	});


});