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joplin/ReactNativeClient/lib/services/rest/Api.js
2018-09-27 21:38:16 +02:00

328 lines
9.0 KiB
JavaScript

const { ltrimSlashes } = require('lib/path-utils.js');
const Folder = require('lib/models/Folder');
const Note = require('lib/models/Note');
const Tag = require('lib/models/Tag');
const Setting = require('lib/models/Setting');
const markdownUtils = require('lib/markdownUtils');
const mimeUtils = require('lib/mime-utils.js').mime;
const { Logger } = require('lib/logger.js');
const md5 = require('md5');
const { shim } = require('lib/shim');
const HtmlToMd = require('lib/HtmlToMd');
const { fileExtension, safeFileExtension, safeFilename, filename } = require('lib/path-utils');
class ApiError extends Error {
constructor(message, httpCode = 400) {
super(message);
this.httpCode_ = httpCode;
}
get httpCode() {
return this.httpCode_;
}
}
class ErrorMethodNotAllowed extends ApiError {
constructor(message = 'Method Not Allowed') {
super(message, 405);
}
}
class ErrorNotFound extends ApiError {
constructor(message = 'Not Found') {
super(message, 404);
}
}
class ErrorForbidden extends ApiError {
constructor(message = 'Forbidden') {
super(message, 403);
}
}
class Api {
constructor(token = null) {
this.token_ = token;
this.logger_ = new Logger();
}
get token() {
return this.token_;
}
async route(method, path, query = null, body = null) {
path = ltrimSlashes(path);
if (!path) throw new ErrorNotFound(); // Nothing at the root yet
const pathParts = path.split('/');
const callSuffix = pathParts.splice(0,1)[0];
const callName = 'action_' + callSuffix;
if (!this[callName]) throw new ErrorNotFound();
try {
return this[callName]({
method: method,
query: query ? query : {},
body: body,
params: pathParts,
});
} catch (error) {
if (!error.httpCode) error.httpCode = 500;
throw error;
}
}
setLogger(l) {
this.logger_ = l;
}
logger() {
return this.logger_;
}
fields_(request, defaultFields) {
const query = request.query;
if (!query || !query.fields) return defaultFields;
const fields = query.fields.split(',').map(f => f.trim()).filter(f => !!f);
return fields.length ? fields : defaultFields;
}
checkToken_(request) {
if (!this.token) return;
if (!request.query || !request.query.token) throw new ErrorForbidden('Missing "token" parameter');
if (request.query.token !== this.token) throw new ErrorForbidden('Invalid "token" parameter');
}
async action_ping(request) {
if (request.method === 'GET') {
return 'JoplinClipperServer';
}
throw new ErrorMethodNotAllowed();
}
async action_folders(request) {
if (request.method === 'GET') {
return await Folder.allAsTree({ fields: this.fields_(request, ['id', 'parent_id', 'title']) });
}
throw new ErrorMethodNotAllowed();
}
async action_tags(request) {
if (request.method === 'GET') {
return await Tag.all({ fields: this.fields_(request, ['id', 'title']) })
}
throw new ErrorMethodNotAllowed();
}
async action_notes(request) {
if (request.method === 'GET') {
this.checkToken_(request);
const noteId = request.params.length ? request.params[0] : null;
const parentId = request.query.parent_id ? request.query.parent_id : null;
const fields = this.fields_(request, []); // previews() already returns default fields
const options = {};
if (fields.length) options.fields = fields;
if (noteId) {
return await Note.preview(noteId, options);
} else {
return await Note.previews(parentId, options);
}
}
if (request.method === 'POST') {
const requestId = Date.now();
const requestNote = JSON.parse(request.body);
let note = await this.requestNoteToNote(requestNote);
const imageUrls = markdownUtils.extractImageUrls(note.body);
this.logger().info('Request (' + requestId + '): Downloading images: ' + imageUrls.length);
let result = await this.downloadImages_(imageUrls);
this.logger().info('Request (' + requestId + '): Creating resources from paths: ' + Object.getOwnPropertyNames(result).length);
result = await this.createResourcesFromPaths_(result);
await this.removeTempFiles_(result);
note.body = this.replaceImageUrlsByResources_(note.body, result);
this.logger().info('Request (' + requestId + '): Saving note...');
note = await Note.save(note);
if (requestNote.tags) {
const tagTitles = requestNote.tags.split(',');
await Tag.setNoteTagsByTitles(note.id, tagTitles);
}
if (requestNote.image_data_url) {
note = await this.attachImageFromDataUrl_(note, requestNote.image_data_url, requestNote.crop_rect);
}
this.logger().info('Request (' + requestId + '): Created note ' + note.id);
return note;
}
throw new ErrorMethodNotAllowed();
}
// ========================================================================================================================
// UTILIY FUNCTIONS
// ========================================================================================================================
htmlToMdParser() {
if (this.htmlToMdParser_) return this.htmlToMdParser_;
this.htmlToMdParser_ = new HtmlToMd();
return this.htmlToMdParser_;
}
async requestNoteToNote(requestNote) {
const output = {
title: requestNote.title ? requestNote.title : '',
body: requestNote.body ? requestNote.body : '',
};
if (requestNote.body_html) {
// Parsing will not work if the HTML is not wrapped in a top level tag, which is not guaranteed
// when getting the content from elsewhere. So here wrap it - it won't change anything to the final
// rendering but it makes sure everything will be parsed.
output.body = await this.htmlToMdParser().parse('<div>' + requestNote.body_html + '</div>', {
baseUrl: requestNote.base_url ? requestNote.base_url : '',
});
}
if (requestNote.parent_id) {
output.parent_id = requestNote.parent_id;
} else {
const folder = await Folder.defaultFolder();
if (!folder) throw new Error('Cannot find folder for note');
output.parent_id = folder.id;
}
if (requestNote.source_url) output.source_url = requestNote.source_url;
if (requestNote.author) output.author = requestNote.author;
return output;
}
// Note must have been saved first
async attachImageFromDataUrl_(note, imageDataUrl, cropRect) {
const tempDir = Setting.value('tempDir');
const mime = mimeUtils.fromDataUrl(imageDataUrl);
let ext = mimeUtils.toFileExtension(mime) || '';
if (ext) ext = '.' + ext;
const tempFilePath = tempDir + '/' + md5(Math.random() + '_' + Date.now()) + ext;
const imageConvOptions = {};
if (cropRect) imageConvOptions.cropRect = cropRect;
await shim.imageFromDataUrl(imageDataUrl, tempFilePath, imageConvOptions);
return await shim.attachFileToNote(note, tempFilePath);
}
async downloadImage_(url) {
const tempDir = Setting.value('tempDir');
const isDataUrl = url && url.toLowerCase().indexOf('data:') === 0;
const name = isDataUrl ? md5(Math.random() + '_' + Date.now()) : filename(url);
let fileExt = isDataUrl ? mimeUtils.toFileExtension(mimeUtils.fromDataUrl(url)) : safeFileExtension(fileExtension(url).toLowerCase());
if (fileExt) fileExt = '.' + fileExt;
let imagePath = tempDir + '/' + safeFilename(name) + fileExt;
if (await shim.fsDriver().exists(imagePath)) imagePath = tempDir + '/' + safeFilename(name) + '_' + md5(Math.random() + '_' + Date.now()).substr(0,10) + fileExt;
try {
if (isDataUrl) {
await shim.imageFromDataUrl(url, imagePath);
} else {
await shim.fetchBlob(url, { path: imagePath });
}
return imagePath;
} catch (error) {
this.logger().warn('Cannot download image at ' + url, error);
return '';
}
}
async downloadImages_(urls) {
const PromisePool = require('es6-promise-pool')
const output = {};
let urlIndex = 0;
const promiseProducer = () => {
if (urlIndex >= urls.length) return null;
const url = urls[urlIndex++];
return new Promise(async (resolve, reject) => {
const imagePath = await this.downloadImage_(url);
if (imagePath) output[url] = { path: imagePath };
resolve();
});
}
const concurrency = 3
const pool = new PromisePool(promiseProducer, concurrency)
await pool.start()
return output;
}
async createResourcesFromPaths_(urls) {
for (let url in urls) {
if (!urls.hasOwnProperty(url)) continue;
const urlInfo = urls[url];
try {
const resource = await shim.createResourceFromPath(urlInfo.path);
urlInfo.resource = resource;
} catch (error) {
this.logger().warn('Cannot create resource for ' + url, error);
}
}
return urls;
}
async removeTempFiles_(urls) {
for (let url in urls) {
if (!urls.hasOwnProperty(url)) continue;
const urlInfo = urls[url];
try {
await shim.fsDriver().remove(urlInfo.path);
} catch (error) {
this.logger().warn('Cannot remove ' + urlInfo.path, error);
}
}
}
replaceImageUrlsByResources_(md, urls) {
let output = md.replace(/(!\[.*?\]\()([^\s\)]+)(.*?\))/g, (match, before, imageUrl, after) => {
const urlInfo = urls[imageUrl];
if (!urlInfo || !urlInfo.resource) return before + imageUrl + after;
const resourceUrl = Resource.internalUrl(urlInfo.resource);
return before + resourceUrl + after;
});
return output;
}
}
module.exports = Api;