import { OptionsWithUri, } from 'request'; import { IDataObject } from 'n8n-workflow'; import { BINARY_ENCODING, IExecuteFunctions, IExecuteSingleFunctions, ILoadOptionsFunctions, } from 'n8n-core'; import * as _ from 'lodash'; import * as uuid from 'uuid/v4'; interface MessageResponse { chunk: Message[]; } interface Message { content: object; room_id: string; sender: string; type: string; user_id: string; } export async function matrixApiRequest(this: IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions, method: string, resource: string, body: string | object = {}, query: object = {}, headers: {} | undefined = undefined, option: {} = {}): Promise { // tslint:disable-line:no-any let options: OptionsWithUri = { method, headers: headers || { 'Content-Type': 'application/json; charset=utf-8' }, body, qs: query, uri: '', json: true, }; options = Object.assign({}, options, option); if (Object.keys(body).length === 0) { delete options.body; } if (Object.keys(query).length === 0) { delete options.qs; } try { let response: any; // tslint:disable-line:no-any const credentials = this.getCredentials('matrixApi'); if (credentials === undefined) { throw new Error('No credentials got returned!'); } //@ts-ignore options.uri = `${credentials.homeserverUrl}/_matrix/${option.overridePrefix || 'client'}/r0${resource}`; options.headers!.Authorization = `Bearer ${credentials.accessToken}`; //@ts-ignore response = await this.helpers.request(options); // When working with images, the request cannot be JSON (it's raw binary data) // But the output is JSON so we have to parse it manually. //@ts-ignore return options.overridePrefix === 'media' ? JSON.parse(response) : response; } catch (error) { if (error.statusCode === 401) { // Return a clear error throw new Error('Matrix credentials are not valid!'); } if (error.response && error.response.body && error.response.body.error) { // Try to return the error prettier throw new Error(`Matrix error response [${error.statusCode}]: ${error.response.body.error}`); } // If that data does not exist for some reason return the actual error throw error; } } export async function handleMatrixCall(this: IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions, item: IDataObject, index: number, resource: string, operation: string): Promise { // tslint:disable-line:no-any if (resource === 'account') { if (operation === 'me') { return await matrixApiRequest.call(this, 'GET', '/account/whoami'); } } else if (resource === 'room') { if (operation === 'create') { const name = this.getNodeParameter('roomName', index) as string; const preset = this.getNodeParameter('preset', index) as string; const roomAlias = this.getNodeParameter('roomAlias', index) as string; const body: IDataObject = { name, preset, }; if (roomAlias) { body.room_alias_name = roomAlias; } return await matrixApiRequest.call(this, 'POST', `/createRoom`, body); } else if (operation === 'join') { const roomIdOrAlias = this.getNodeParameter('roomIdOrAlias', index) as string; return await matrixApiRequest.call(this, 'POST', `/rooms/${roomIdOrAlias}/join`); } else if (operation === 'leave') { const roomId = this.getNodeParameter('roomId', index) as string; return await matrixApiRequest.call(this, 'POST', `/rooms/${roomId}/leave`); } else if (operation === 'invite') { const roomId = this.getNodeParameter('roomId', index) as string; const userId = this.getNodeParameter('userId', index) as string; const body: IDataObject = { user_id: userId }; return await matrixApiRequest.call(this, 'POST', `/rooms/${roomId}/invite`, body); } else if (operation === 'kick') { const roomId = this.getNodeParameter('roomId', index) as string; const userId = this.getNodeParameter('userId', index) as string; const reason = this.getNodeParameter('reason', index) as string; const body: IDataObject = { user_id: userId, reason, }; return await matrixApiRequest.call(this, 'POST', `/rooms/${roomId}/kick`, body); } } else if (resource === 'message') { if (operation === 'create') { const roomId = this.getNodeParameter('roomId', index) as string; const text = this.getNodeParameter('text', index) as string; const body: IDataObject = { msgtype: 'm.text', body: text, }; const messageId = uuid(); return await matrixApiRequest.call(this, 'PUT', `/rooms/${roomId}/send/m.room.message/${messageId}`, body); } else if (operation === 'getAll') { const roomId = this.getNodeParameter('roomId', index) as string; const returnAll = this.getNodeParameter('returnAll', index) as boolean; const otherOptions = this.getNodeParameter('otherOptions', index) as IDataObject; const returnData: IDataObject[] = []; if (returnAll) { let responseData; let from; do { const qs: IDataObject = { dir: 'b', // Get latest messages first - doesn't return anything if we use f without a previous token. from, }; if (otherOptions.filter) { qs.filter = otherOptions.filter; } responseData = await matrixApiRequest.call(this, 'GET', `/rooms/${roomId}/messages`, {}, qs); returnData.push.apply(returnData, responseData.chunk); from = responseData.end; } while (responseData.chunk.length > 0); } else { const limit = this.getNodeParameter('limit', index) as number; const qs: IDataObject = { dir: 'b', // Get latest messages first - doesn't return anything if we use f without a previous token. limit, }; if (otherOptions.filter) { qs.filter = otherOptions.filter; } const responseData = await matrixApiRequest.call(this, 'GET', `/rooms/${roomId}/messages`, {}, qs); returnData.push.apply(returnData, responseData.chunk); } return returnData; } } else if (resource === 'event') { if (operation === 'get') { const roomId = this.getNodeParameter('roomId', index) as string; const eventId = this.getNodeParameter('eventId', index) as string; return await matrixApiRequest.call(this, 'GET', `/rooms/${roomId}/event/${eventId}`); } } else if (resource === 'media') { if (operation === 'upload') { const roomId = this.getNodeParameter('roomId', index) as string; const mediaType = this.getNodeParameter('mediaType', index) as string; const binaryPropertyName = this.getNodeParameter('binaryPropertyName', index) as string; let body; const qs: IDataObject = {}; const headers: IDataObject = {}; let filename; if (item.binary === undefined //@ts-ignore || item.binary[binaryPropertyName] === undefined) { throw new Error(`No binary data property "${binaryPropertyName}" does not exists on item!`); } //@ts-ignore qs.filename = item.binary[binaryPropertyName].fileName; //@ts-ignore filename = item.binary[binaryPropertyName].fileName; //@ts-ignore body = Buffer.from(item.binary[binaryPropertyName].data, BINARY_ENCODING); //@ts-ignore headers['Content-Type'] = item.binary[binaryPropertyName].mimeType; headers['accept'] = 'application/json,text/*;q=0.99'; const uploadRequestResult = await matrixApiRequest.call(this, 'POST', `/upload`, body, qs, headers, { overridePrefix: 'media', json: false, }); body = { msgtype: `m.${mediaType}`, body: filename, url: uploadRequestResult.content_uri, }; const messageId = uuid(); return await matrixApiRequest.call(this, 'PUT', `/rooms/${roomId}/send/m.room.message/${messageId}`, body); } } else if (resource === 'roomMember') { if (operation === 'getAll') { const roomId = this.getNodeParameter('roomId', index) as string; const filters = this.getNodeParameter('filters', index) as IDataObject; const qs: IDataObject = { membership: filters.membership ? filters.membership : '', not_membership: filters.notMembership ? filters.notMembership : '', }; const roomMembersResponse = await matrixApiRequest.call(this, 'GET', `/rooms/${roomId}/members`, {}, qs); return roomMembersResponse.chunk; } } throw new Error('Not implemented yet'); }