Merge branch 'develop' of Software_Engineering_I/greenvironment-server into master

pull/1/head
Trivernis 5 years ago committed by Gitea
commit d9ff675931

1
.gitignore vendored

@ -5,3 +5,4 @@ npm-debug.log
test/*.log test/*.log
dist dist
.idea .idea
config.yaml

@ -0,0 +1,15 @@
# Changelog
All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
## [Unreleased]
### Added
- Connection to Postgres Database
- Graphql Schema
- default-config file and generation of config file on startup
- DTOs
- Home Route

@ -0,0 +1,12 @@
FROM node:current-alpine
COPY . /home/node/green
WORKDIR /home/node/green
RUN npm install -g gulp
RUN npm install --save-dev
RUN npm rebuild node-sass
RUN gulp
COPY . .
EXPOSE 8080
EXPOSE 5432
CMD ["npm" , "run"]

@ -1 +1,11 @@
greenvironment-server # greenvironment-server
Server of the greenvironment social network.
## Install
You need to install a nodejs runtime to run the greenvironment server.
Then you need to install all requirements. To do so, open a terminal in the
greenvironment project folder and execute "npm i". You can build the project by
executing "gulp" in the terminal. To run the server you need
to execute "node ./dist".

@ -0,0 +1,15 @@
version: "3"
services:
greenvironment:
build:
context: .
dockerfile: ./Dockerfile
user: "node"
working_dir: /home/node/green
environment:
- NODE_ENV=production
volumes:
- ./:/home/node/green
ports:
- "8080:8080"
command: "npm start"

@ -3,7 +3,7 @@ const sass = require('gulp-sass');
const ts = require('gulp-typescript'); const ts = require('gulp-typescript');
const minify = require('gulp-minify'); const minify = require('gulp-minify');
const del = require('delete'); const del = require('delete');
const gulp = require('gulp');
function clearDist(cb) { function clearDist(cb) {
del('dist/*', cb); del('dist/*', cb);
@ -34,7 +34,12 @@ function compileSass() {
.pipe(dest('dist/public/stylesheets')); .pipe(dest('dist/public/stylesheets'));
} }
task('default', series(clearDist, compileTypescript, minifyJs, compileSass)); function moveRemaining() {
return src(['src/**/*', '!src/**/*.ts', '!src/**/*.sass', '!src/**/*.js'])
.pipe(dest('dist'));
}
task('default', series(clearDist, compileTypescript, minifyJs, compileSass, moveRemaining));
task('watch', () => { task('watch', () => {
watch('src/public/stylesheets/sass/**/*.sass', compileSass); watch('src/public/stylesheets/sass/**/*.sass', compileSass);
watch('**/*.js', minifyJs); watch('**/*.js', minifyJs);

7540
package-lock.json generated

File diff suppressed because it is too large Load Diff

@ -0,0 +1,70 @@
{
"name": "greenvironment-server",
"version": "0.1.0",
"description": "Server for greenvironment network",
"main": "./dist/index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"build": "gulp",
"start": "node ./dist/index.js"
},
"repository": {
"type": "git",
"url": "https://git.trivernis.net/Software_Engineering_I/greenvironment-server.git"
},
"keywords": [
"server",
"nodejs",
"express"
],
"author": "SoftEngI",
"license": "ISC",
"devDependencies": {
"@types/compression": "^1.0.1",
"@types/connect-pg-simple": "^4.2.0",
"@types/cookie-parser": "^1.4.2",
"@types/express": "^4.17.1",
"@types/express-graphql": "^0.8.0",
"@types/express-session": "^1.15.14",
"@types/express-socket.io-session": "^1.3.2",
"@types/fs-extra": "^8.0.0",
"@types/graphql": "^14.2.3",
"@types/http-status": "^0.2.30",
"@types/js-yaml": "^3.12.1",
"@types/markdown-it": "0.0.9",
"@types/node": "^12.7.8",
"@types/pg": "^7.11.0",
"@types/socket.io": "^2.1.2",
"@types/winston": "^2.4.4",
"delete": "^1.1.0",
"gulp": "^4.0.2",
"gulp-minify": "^3.1.0",
"gulp-sass": "^4.0.2",
"gulp-typescript": "^5.0.1",
"ts-lint": "^4.5.1",
"tsc": "^1.20150623.0",
"tslint": "^5.19.0",
"typescript": "^3.5.3"
},
"dependencies": {
"compression": "^1.7.4",
"connect-pg-simple": "^6.0.1",
"cookie-parser": "^1.4.4",
"express": "^4.17.1",
"express-graphql": "^0.9.0",
"express-session": "^1.16.2",
"express-socket.io-session": "^1.3.5",
"fs-extra": "^8.1.0",
"g": "^2.0.1",
"graphql": "^14.4.2",
"graphql-import": "^0.7.1",
"http-status": "^1.3.2",
"js-yaml": "^3.13.1",
"markdown-it": "^10.0.0",
"markdown-it-emoji": "^1.4.0",
"pg": "^7.12.1",
"pug": "^2.0.4",
"socket.io": "^2.2.0",
"winston": "^3.2.1"
}
}

@ -0,0 +1,97 @@
import * as compression from "compression";
import connectPgSimple = require("connect-pg-simple");
import * as cookieParser from "cookie-parser";
import * as express from "express";
import * as graphqlHTTP from "express-graphql";
import * as session from "express-session";
import sharedsession = require("express-socket.io-session");
import {buildSchema} from "graphql";
import {importSchema} from "graphql-import";
import * as http from "http";
import * as path from "path";
import * as socketIo from "socket.io";
import {resolver} from "./graphql/resolvers";
import dataaccess, {queryHelper} from "./lib/dataaccess";
import globals from "./lib/globals";
import routes from "./routes";
const logger = globals.logger;
const PgSession = connectPgSimple(session);
class App {
public app: express.Application;
public io: socketIo.Server;
public server: http.Server;
constructor() {
this.app = express();
this.server = new http.Server(this.app);
this.io = socketIo(this.server);
}
/**
* initializes everything that needs to be initialized asynchronous.
*/
public async init() {
await dataaccess.init();
await routes.ioListeners(this.io);
const appSession = session({
cookie: {
maxAge: Number(globals.config.session.cookieMaxAge) || 604800000,
secure: "auto",
},
resave: false,
saveUninitialized: false,
secret: globals.config.session.secret,
store: new PgSession({
pool: dataaccess.pool,
tableName: "user_sessions",
}),
});
this.io.use(sharedsession(appSession, {autoSave: true}));
this.app.set("views", path.join(__dirname, "views"));
this.app.set("view engine", "pug");
this.app.set("trust proxy", 1);
this.app.use(compression());
this.app.use(express.json());
this.app.use(express.urlencoded({extended: false}));
this.app.use(express.static(path.join(__dirname, "public")));
this.app.use(cookieParser());
this.app.use(appSession);
this.app.use((req, res, next) => {
logger.verbose(`${req.method} ${req.url}`);
next();
});
this.app.use(routes.router);
this.app.use("/graphql", graphqlHTTP((request, response) => {
return {
// @ts-ignore all
context: {session: request.session},
graphiql: true,
rootValue: resolver(request, response),
schema: buildSchema(importSchema(path.join(__dirname, "./graphql/schema.graphql"))),
};
}));
}
/**
* Starts the web server.
*/
public start() {
if (globals.config.server.port) {
logger.info(`Starting server...`);
this.app.listen(globals.config.server.port);
logger.info(`Server running on port ${globals.config.server.port}`);
} else {
logger.error("No port specified in the config." +
"Please configure a port in the config.yaml.");
}
}
}
export default App;

@ -0,0 +1,22 @@
# database connection info
database:
host:
port:
user:
password:
database:
# http server configuration
server:
port: 8080
session:
secret: REPLACE WITH SAFE RANDOM GENERATED SECRET
cookieMaxAge: 604800000 # 7 days
markdown:
plugins:
- 'markdown-it-emoji'
logging:
level: info

@ -0,0 +1,227 @@
import {GraphQLError} from "graphql";
import * as status from "http-status";
import dataaccess from "../lib/dataaccess";
import {Chatroom} from "../lib/dataaccess/Chatroom";
import {Post} from "../lib/dataaccess/Post";
import {Profile} from "../lib/dataaccess/Profile";
import {User} from "../lib/dataaccess/User";
import {NotLoggedInGqlError} from "../lib/errors/graphqlErrors";
import globals from "../lib/globals";
import {InternalEvents} from "../lib/InternalEvents";
import {is} from "../lib/regex";
/**
* Returns the resolvers for the graphql api.
* @param req - the request object
* @param res - the response object
*/
export function resolver(req: any, res: any): any {
return {
getSelf() {
if (req.session.userId) {
return new Profile(req.session.userId);
} else {
res.status(status.UNAUTHORIZED);
return new NotLoggedInGqlError();
}
},
async getUser({userId, handle}: { userId: number, handle: string }) {
if (handle) {
return await dataaccess.getUserByHandle(handle);
} else if (userId) {
return new User(userId);
} else {
res.status(status.BAD_REQUEST);
return new GraphQLError("No userId or handle provided.");
}
},
async getPost({postId}: { postId: number }) {
if (postId) {
return await dataaccess.getPost(postId);
} else {
res.status(status.BAD_REQUEST);
return new GraphQLError("No postId given.");
}
},
async getChat({chatId}: { chatId: number }) {
if (chatId) {
return new Chatroom(chatId);
} else {
res.status(status.BAD_REQUEST);
return new GraphQLError("No chatId given.");
}
},
acceptCookies() {
req.session.cookiesAccepted = true;
return true;
},
async login({email, passwordHash}: { email: string, passwordHash: string }) {
if (email && passwordHash) {
try {
const user = await dataaccess.getUserByLogin(email, passwordHash);
req.session.userId = user.id;
return user;
} catch (err) {
globals.logger.warn(err.message);
globals.logger.debug(err.stack);
res.status(status.BAD_REQUEST);
return err.graphqlError || err.message;
}
} else {
res.status(status.BAD_REQUEST);
return new GraphQLError("No email or password given.");
}
},
logout() {
if (req.session.user) {
delete req.session.user;
return true;
} else {
res.status(status.UNAUTHORIZED);
return new NotLoggedInGqlError();
}
},
async register({username, email, passwordHash}: { username: string, email: string, passwordHash: string }) {
if (username && email && passwordHash) {
if (!is.email(email)) {
res.status(status.BAD_REQUEST);
return new GraphQLError(`'${email}' is not a valid email address!`);
}
try {
const user = await dataaccess.registerUser(username, email, passwordHash);
req.session.userId = user.id;
return user;
} catch (err) {
globals.logger.warn(err.message);
globals.logger.debug(err.stack);
res.status(status.BAD_REQUEST);
return err.graphqlError || err.message;
}
} else {
res.status(status.BAD_REQUEST);
return new GraphQLError("No username, email or password given.");
}
},
async vote({postId, type}: { postId: number, type: dataaccess.VoteType }) {
if (postId && type) {
if (req.session.userId) {
return await (new Post(postId)).vote(req.session.userId, type);
} else {
res.status(status.UNAUTHORIZED);
return new NotLoggedInGqlError();
}
} else {
res.status(status.BAD_REQUEST);
return new GraphQLError("No postId or type given.");
}
},
async createPost({content}: { content: string }) {
if (content) {
if (req.session.userId) {
const post = await dataaccess.createPost(content, req.session.userId);
globals.internalEmitter.emit(InternalEvents.GQLPOSTCREATE, post);
return post;
} else {
res.status(status.UNAUTHORIZED);
return new NotLoggedInGqlError();
}
} else {
res.status(status.BAD_REQUEST);
return new GraphQLError("Can't create empty post.");
}
},
async deletePost({postId}: { postId: number }) {
if (postId) {
const post = new Post(postId);
if ((await post.author()).id === req.session.userId) {
return await dataaccess.deletePost(post.id);
} else {
res.status(status.FORBIDDEN);
return new GraphQLError("User is not author of the post.");
}
} else {
return new GraphQLError("No postId given.");
}
},
async createChat({members}: { members: number[] }) {
if (req.session.userId) {
const chatMembers = [req.session.userId];
if (members) {
chatMembers.push(...members);
}
return await dataaccess.createChat(...chatMembers);
} else {
res.status(status.UNAUTHORIZED);
return new NotLoggedInGqlError();
}
},
async sendMessage({chatId, content}: { chatId: number, content: string }) {
if (!req.session.userId) {
res.status(status.UNAUTHORIZED);
return new NotLoggedInGqlError();
}
if (chatId && content) {
try {
const message = await dataaccess.sendChatMessage(req.session.userId, chatId, content);
globals.internalEmitter.emit(InternalEvents.GQLCHATMESSAGE, message);
return message;
} catch (err) {
globals.logger.warn(err.message);
globals.logger.debug(err.stack);
res.status(status.BAD_REQUEST);
return err.graphqlError || err.message;
}
} else {
res.status(status.BAD_REQUEST);
return new GraphQLError("No chatId or content given.");
}
},
async sendRequest({receiver, type}: { receiver: number, type: dataaccess.RequestType }) {
if (!req.session.userId) {
res.status(status.UNAUTHORIZED);
return new NotLoggedInGqlError();
}
if (receiver && type) {
return await dataaccess.createRequest(req.session.userId, receiver, type);
} else {
res.status(status.BAD_REQUEST);
return new GraphQLError("No receiver or type given.");
}
},
async denyRequest({sender, type}: { sender: number, type: dataaccess.RequestType }) {
if (!req.session.userId) {
res.status(status.UNAUTHORIZED);
return new NotLoggedInGqlError();
}
if (sender && type) {
const profile = new Profile(req.session.userId);
await profile.denyRequest(sender, type);
return true;
} else {
res.status(status.BAD_REQUEST);
return new GraphQLError("No sender or type given.");
}
},
async acceptRequest({sender, type}: { sender: number, type: dataaccess.RequestType }) {
if (!req.session.userId) {
res.status(status.UNAUTHORIZED);
return new NotLoggedInGqlError();
}
if (sender && type) {
try {
const profile = new Profile(req.session.userId);
await profile.acceptRequest(sender, type);
return true;
} catch (err) {
globals.logger.warn(err.message);
globals.logger.debug(err.stack);
res.status(status.BAD_REQUEST);
return err.graphqlError || err.message;
}
} else {
res.status(status.BAD_REQUEST);
return new GraphQLError("No sender or type given.");
}
},
};
}

@ -0,0 +1,236 @@
type Query {
"returns the user object for a given user id or a handle (only one required)"
getUser(userId: ID, handle: String): User
"returns the logged in user"
getSelf: Profile
"returns the post object for a post id"
getPost(postId: ID!): Post
"returns the chat object for a chat id"
getChat(chatId: ID!): ChatRoom
"find a post by the posted date or content"
findPost(first: Int, offset: Int, text: String!, postedDate: String): [Post]
"find a user by user name or handle"
findUser(first: Int, offset: Int, name: String!, handle: String!): [User]
}
type Mutation {
"Accepts the usage of cookies."
acceptCookies: Boolean
"Login of the user. The passwordHash should be a sha512 hash of the password."
login(email: String, passwordHash: String): Profile
"Registers the user."
register(username: String, email: String, passwordHash: String): Profile
"Logout of the user."
logout: Boolean
"Upvote/downvote a Post"
vote(postId: ID!, type: VoteType!): VoteType
"Report the post"
report(postId: ID!): Boolean
"send a request"
sendRequest(receiver: ID!, type: RequestType): Request
"lets you accept a request for a given request id"
acceptRequest(sender: ID!, type: RequestType): Boolean
"lets you deny a request for a given request id"
denyRequest(requestId: ID!): Boolean
"send a message in a Chatroom"
sendMessage(chatId: ID!, content: String!): ChatMessage
"create the post"
createPost(content: String!): Post
"delete the post for a given post id"
deletePost(postId: ID!): Boolean
"Creates a chat between the user (and optional an other user)"
createChat(members: [ID!]): ChatRoom
}
interface UserData {
"url for the Profile picture of the User"
profilePicture: String
"name of the User"
name: String!
"unique identifier name from the User"
handle: String!
"Id of the User"
id: ID!
"the total number of posts the user posted"
numberOfPosts: Int
"returns a given number of posts of a user"
posts(first: Int=10, offset: Int): [Post]
"creation date of the user account"
joinedAt: String!
"all friends of the user"
friends: [User]
}
"represents a single user account"
type User implements UserData{
"url for the Profile picture of the User"
profilePicture: String
"name of the User"
name: String!
"unique identifier name from the User"
handle: String!
"Id of the User"
id: ID!
"the total number of posts the user posted"
numberOfPosts: Int
"returns a given number of posts of a user"
posts(first: Int=10, offset: Int): [Post]
"creation date of the user account"
joinedAt: String!
"all friends of the user"
friends: [User]
}
type Profile implements UserData {
"url for the Profile picture of the User"
profilePicture: String
"name of the User"
name: String!
"returns the chatrooms the user joined."
chats(first: Int=10, offset: Int): [ChatRoom]
"unique identifier name from the User"
handle: String!
"Id of the User"
id: ID!
"the total number of posts the user posted"
numberOfPosts: Int
"returns a given number of posts of a user"
posts(first: Int=10, offset: Int): [Post]
"creation date of the user account"
joinedAt: String!
"all friends of the user"
friends: [User]
"all sent request for groupChats/friends/events"
sentRequests: [Request]
"all received request for groupChats/friends/events"
receivedRequests: [Request]
}
"represents a single user post"
type Post {
"The id of the post."
id: ID!
"the text of the post"
content: String
"the content of the post rendered by markdown-it"
htmlContent: String
"upvotes of the Post"
upvotes: Int!
"downvotes of the Post"
downvotes: Int!
"the user that is the author of the Post"
author: User!
"date the post was created"
createdAt: String!
"the type of vote the user performed on the post"
userVote: VoteType
}
"represents a request of any type"
type Request {
"Id of the user who sended the request"
sender: User!
"Id of the user who received the request"
receiver: User!
"type of the request"
type: RequestType!
}
"represents a chatroom"
type ChatRoom {
"the socket.io namespace for the chatroom"
namespace: String
"the members of the chatroom"
members: [User!]
"return a specfic range of messages posted in the chat"
messages(first: Int = 10, offset: Int, containing: String): [ChatMessage]!
"id of the chat"
id: ID!
}
type ChatMessage {
"The author of the chat message."
author: User!
"The chatroom the message was posted in"
chat: ChatRoom!
"The timestamp when the message was posted (epoch)."
createdAt: String!
"The content of the message."
content: String!
"The content of the message rendered by markdown-it."
htmlContent: String
}
"represents the type of vote performed on a post"
enum VoteType {
UPVOTE
DOWNVOTE
}
"""
represents the type of request that the user has received
Currently on Friend Requests are implemented.
"""
enum RequestType {
FRIENDREQUEST
GROUPINVITE
EVENTINVITE
}

@ -0,0 +1,11 @@
import App from "./app";
/**
* async main function wrapper.
*/
(async () => {
const app = new App();
await app.init();
app.start();
})();

@ -0,0 +1,8 @@
export enum InternalEvents {
CHATCREATE = "chatCreate",
CHATMESSAGE = "chatMessage",
GQLCHATMESSAGE = "graphqlChatMessage",
REQUESTCREATE = "requestCreate",
POSTCREATE = "postCreate",
GQLPOSTCREATE = "graphqlPostCreate",
}

@ -0,0 +1,73 @@
import * as crypto from "crypto";
import {EventEmitter} from "events";
export class MemoryCache extends EventEmitter {
private cacheItems: any = {};
private cacheExpires: any = {};
private expireCheck: NodeJS.Timeout;
/**
* Creates interval function.
* @param ttl
*/
constructor(private ttl: number = 500) {
super();
this.expireCheck = setInterval(() => this.checkExpires(), ttl / 2);
}
/**
* Creates a md5 hash of the given key.
* @param key
*/
public hashKey(key: string): string {
const hash = crypto.createHash("sha1");
const data = hash.update(key, "utf8");
return data.digest("hex");
}
/**
* Sets an entry.
* @param key
* @param value
*/
public set(key: string, value: any) {
this.cacheItems[key] = value;
this.cacheExpires[key] = Date.now() + this.ttl;
this.emit("set", key, value);
}
/**
* Returns the entry stored with the given key.
* @param key
*/
public get(key: string) {
if (this.cacheItems.hasOwnProperty(key)) {
this.emit("hit", key, this.cacheItems[key]);
return this.cacheItems[key];
} else {
this.emit("miss", key);
}
}
/**
* Deletes a cache item.
* @param key
*/
public delete(key: string) {
this.emit("delete", key);
delete this.cacheItems[key];
}
/**
* Checks expires and clears items that are over the expire value.
*/
private checkExpires() {
for (const [key, value] of Object.entries(this.cacheExpires)) {
if (value < Date.now()) {
this.emit("delete", key);
delete this.cacheItems[key];
delete this.cacheExpires[key];
}
}
}
}

@ -0,0 +1,212 @@
/**
* @author Trivernis
* @remarks
*
* Taken from {@link https://github.com/Trivernis/whooshy}
*/
import * as fsx from "fs-extra";
import {Pool, PoolClient, QueryConfig, QueryResult} from "pg";
import globals from "./globals";
const logger = globals.logger;
export interface IAdvancedQueryConfig extends QueryConfig {
cache?: boolean;
}
/**
* Transaction class to wrap SQL transactions.
*/
export class SqlTransaction {
/**
* Constructor.
* @param client
*/
constructor(private client: PoolClient) {
}
/**
* Begins the transaction.
*/
public async begin() {
return await this.client.query("BEGIN");
}
/**
* Commits the transaction
*/
public async commit() {
return await this.client.query("COMMIT");
}
/**
* Rolls back the transaction
*/
public async rollback() {
return await this.client.query("ROLLBACK");
}
/**
* Executes a query inside the transaction.
* @param query
*/
public async query(query: QueryConfig) {
return await this.client.query(query);
}
/**
* Releases the client back to the pool.
*/
public release() {
this.client.release();
}
}
/**
* Query helper for easyer fetching of a specific row count.
*/
export class QueryHelper {
private pool: Pool;
/**
* Constructor.
* @param pgPool
* @param [tableCreationFile]
* @param [tableUpdateFile]
*/
constructor(pgPool: Pool, private tableCreationFile?: string, private tableUpdateFile?: string) {
this.pool = pgPool;
}
/**
* Async init function
*/
public async init() {
await this.pool.connect();
await this.createTables();
await this.updateTableDefinitions();
}
/**
* creates all tables needed if a filepath was given with the constructor
*/
public async createTables() {
if (this.tableCreationFile) {
logger.info("Creating nonexistent tables...");
const tableSql = await fsx.readFile(this.tableCreationFile, "utf-8");
const trans = await this.createTransaction();
await trans.begin();
try {
await trans.query({text: tableSql});
await trans.commit();
} catch (err) {
globals.logger.error(`Error on table creation ${err.message}`);
globals.logger.debug(err.stack);
await trans.rollback();
} finally {
trans.release();
}
}
}
/**
* Updates the definition of the tables if the table update file was passed in the constructor
*/
public async updateTableDefinitions() {
if (this.tableUpdateFile) {
logger.info("Updating table definitions...");
const tableSql = await fsx.readFile(this.tableUpdateFile, "utf-8");
const trans = await this.createTransaction();
await trans.begin();
try {
await trans.query({text: tableSql});
await trans.commit();
} catch (err) {
globals.logger.error(`Error on table update ${err.message}`);
globals.logger.debug(err.stack);
await trans.rollback();
} finally {
trans.release();
}
}
}
/**
* executes the sql query with values and returns all results.
* @param query
*/
public async all(query: IAdvancedQueryConfig): Promise<any[]> {
const result = await this.query(query);
return result.rows;
}
/**
* executes the sql query with values and returns the first result.
* @param query
*/
public async first(query: IAdvancedQueryConfig): Promise<any> {
const result = await this.query(query);
if (result.rows && result.rows.length > 0) {
return result.rows[0];
}
}
/**
* Creates a new Transaction to be uses with error handling.
*/
public async createTransaction() {
const client: PoolClient = await this.pool.connect();
return new SqlTransaction(client);
}
/**
* Queries the database with error handling.
* @param query - the sql and values to execute
*/
private async query(query: IAdvancedQueryConfig): Promise<QueryResult|{rows: any}> {
try {
query.text = query.text.replace(/[\r\n]/g, " ");
globals.logger.silly(`Executing sql '${JSON.stringify(query)}'`);
if (query.cache) {
const key = globals.cache.hashKey(JSON.stringify(query));
const cacheResult = globals.cache.get(key);
if (cacheResult) {
return cacheResult;
} else {
const result = await this.pool.query(query);
globals.cache.set(key, result);
return result;
}
} else {
return await this.pool.query(query);
}
} catch (err) {
logger.debug(`Error on query "${JSON.stringify(query)}".`);
logger.error(`Sql query failed: ${err}`);
logger.verbose(err.stack);
return {
rows: null,
};
}
}
}
/**
* Returns the parameterized value sql for inserting
* @param columnCount
* @param rowCount
* @param [offset]
*/
export function buildSqlParameters(columnCount: number, rowCount: number, offset?: number): string {
let sql = "";
for (let i = 0; i < rowCount; i++) {
sql += "(";
for (let j = 0; j < columnCount; j++) {
sql += `$${(i * columnCount) + j + 1 + offset},`;
}
sql = sql.replace(/,$/, "") + "),";
}
return sql.replace(/,$/, "");
}

@ -0,0 +1,26 @@
/**
* @author Trivernis
* @remarks
*
* Taken from {@link https://github.com/Trivernis/whooshy}
*/
import {Router} from "express";
import {Namespace, Server} from "socket.io";
/**
* Abstract Route class to be implemented by each route.
* This class contains the socket-io Server, router and resolver
* for each route.
*/
abstract class Route {
public router?: Router;
protected io?: Server;
protected ions?: Namespace;
public abstract async init(...params: any): Promise<any>;
public abstract async destroy(...params: any): Promise<any>;
}
export default Route;

@ -0,0 +1,31 @@
import markdown from "../markdown";
import {Chatroom} from "./Chatroom";
import {User} from "./User";
export class ChatMessage {
constructor(
public readonly author: User,
public readonly chat: Chatroom,
public readonly createdAt: number,
public readonly content: string) {}
/**
* The content rendered by markdown-it.
*/
public htmlContent(): string {
return markdown.renderInline(this.content);
}
/**
* Returns resolved and rendered content of the chat message.
*/
public resolvedContent() {
return {
author: this.author.id,
chat: this.chat.id,
content: this.content,
createdAt: this.createdAt,
htmlContent: this.htmlContent(),
};
}
}

@ -0,0 +1,76 @@
import globals from "../globals";
import {ChatMessage} from "./ChatMessage";
import {queryHelper} from "./index";
import {User} from "./User";
export class Chatroom {
public namespace: string;
constructor(public readonly id: number) {
this.id = Number(id);
this.namespace = `/chat/${id}`;
}
/**
* Returns if the chat exists.
*/
public async exists(): Promise<boolean> {
const result = await queryHelper.first({
text: "SELECT id FROM chats WHERE id = $1",
values: [this.id],
});
return !!result.id;
}
/**
* Returns all members of a chatroom.
*/
public async members(): Promise<User[]> {
const result = await queryHelper.all({
cache: true,
text: `SELECT * FROM chat_members
JOIN users ON (chat_members.member = users.id)
WHERE chat_members.chat = $1;`,
values: [this.id],
});
const chatMembers = [];
for (const row of result) {
const user = new User(row.id, row);
chatMembers.push(user);
}
return chatMembers;
}
/**
* Returns messages of the chat
* @param limit - the limit of messages to return
* @param offset - the offset of messages to return
* @param containing - filter by containing
*/
public async messages({first, offset, containing}: {first?: number, offset?: number, containing?: string}) {
const lim = first || 16;
const offs = offset || 0;
const result = await queryHelper.all({
cache: true,
text: "SELECT * FROM chat_messages WHERE chat = $1 ORDER BY created_at DESC LIMIT $2 OFFSET $3",
values: [this.id, lim, offs],
});
const messages = [];
const users: any = {};
for (const row of result) {
if (!users[row.author]) {
const user = new User(row.author);
await user.exists();
users[row.author] = user;
}
messages.push(new ChatMessage(users[row.author], this, row.created_at, row.content));
}
if (containing) {
return messages.filter((x) => x.content.includes(containing));
} else {
return messages;
}
}
}

@ -0,0 +1,40 @@
/**
* abstact DataObject class
*/
import {EventEmitter} from "events";
export abstract class DataObject extends EventEmitter {
protected dataLoaded: boolean = false;
private loadingData: boolean = false;
constructor(public id: number, protected row?: any) {
super();
this.id = Number(id);
}
/**
* Returns if the object extists by trying to load data.
*/
public async exists() {
await this.loadDataIfNotExists();
return this.dataLoaded;
}
protected abstract loadData(): Promise<void>;
/**
* Loads data from the database if data has not been loaded
*/
protected async loadDataIfNotExists() {
if (!this.dataLoaded && !this.loadingData) {
this.loadingData = true;
await this.loadData();
this.loadingData = false;
this.emit("loaded");
} else if (this.loadingData) {
return new Promise((res) => {
this.on("loaded", () => res());
});
}
}
}

@ -0,0 +1,159 @@
import markdown from "../markdown";
import {DataObject} from "./DataObject";
import {queryHelper} from "./index";
import dataaccess from "./index";
import {User} from "./User";
export class Post extends DataObject {
public readonly id: number;
private $createdAt: string;
private $content: string;
private $author: number;
private $type: string;
/**
* Returns the resolved data of the post.
*/
public async resolvedData() {
await this.loadDataIfNotExists();
return {
authorId: this.$author,
content: this.$content,
createdAt: this.$createdAt,
id: this.id,
type: this.$type,
};
}
/**
* Returns the upvotes of a post.
*/
public async upvotes(): Promise<number> {
const result = await queryHelper.first({
cache: true,
text: "SELECT COUNT(*) count FROM votes WHERE item_id = $1 AND vote_type = 'UPVOTE'",
values: [this.id],
});
return result.count;
}
/**
* Returns the downvotes of the post
*/
public async downvotes(): Promise<number> {
const result = await queryHelper.first({
cache: true,
text: "SELECT COUNT(*) count FROM votes WHERE item_id = $1 AND vote_type = 'DOWNVOTE'",
values: [this.id],
});
return result.count;
}
/**
* The content of the post (markdown)
*/
public async content(): Promise<string> {
await this.loadDataIfNotExists();
return this.$content;
}
/**
* the content rendered by markdown-it.
*/
public async htmlContent(): Promise<string> {
await this.loadDataIfNotExists();
return markdown.render(this.$content);
}
/**
* The date the post was created at.
*/
public async createdAt(): Promise<string> {
await this.loadDataIfNotExists();
return this.$createdAt;
}
/**
* The autor of the post.
*/
public async author(): Promise<User> {
await this.loadDataIfNotExists();
return new User(this.$author);
}
/**
* Deletes the post.
*/
public async delete(): Promise<void> {
const query = await queryHelper.first({
text: "DELETE FROM posts WHERE id = $1",
values: [this.id],
});
}
/**
* The type of vote the user performed on the post.
*/
public async userVote(userId: number): Promise<dataaccess.VoteType> {
const result = await queryHelper.first({
cache: true,
text: "SELECT vote_type FROM votes WHERE user_id = $1 AND item_id = $2",
values: [userId, this.id],
});
if (result) {
return result.vote_type;
} else {
return null;
}
}
/**
* Performs a vote on a post.
* @param userId
* @param type
*/
public async vote(userId: number, type: dataaccess.VoteType): Promise<dataaccess.VoteType> {
const uVote = await this.userVote(userId);
if (uVote === type) {
await queryHelper.first({
text: "DELETE FROM votes WHERE item_id = $1 AND user_id = $2",
values: [this.id, userId],
});
} else {
if (uVote) {
await queryHelper.first({
text: "UPDATE votes SET vote_type = $1 WHERE user_id = $2 AND item_id = $3",
values: [type, userId, this.id],
});
} else {
await queryHelper.first({
text: "INSERT INTO votes (user_id, item_id, vote_type) values ($1, $2, $3)",
values: [userId, this.id, type],
});
}
return type;
}
}
/**
* Loads the data from the database if needed.
*/
protected async loadData(): Promise<void> {
let result: any;
if (this.row) {
result = this.row;
} else {
result = await queryHelper.first({
cache: true,
text: "SELECT * FROM posts WHERE posts.id = $1",
values: [this.id],
});
}
if (result) {
this.$author = result.author;
this.$content = result.content;
this.$createdAt = result.created_at;
this.$type = result.type;
this.dataLoaded = true;
}
}
}

@ -0,0 +1,163 @@
import {RequestNotFoundError} from "../errors/RequestNotFoundError";
import {Chatroom} from "./Chatroom";
import dataaccess, {queryHelper} from "./index";
import {User} from "./User";
import {Request} from "./Request";
export class Profile extends User {
/**
* Returns all chatrooms (with pagination).
* Skips the query if the user doesn't exist.
* @param first
* @param offset
*/
public async chats({first, offset}: {first: number, offset?: number}): Promise<Chatroom[]> {
if (!(await this.exists())) {
return [];
}
first = first || 10;
offset = offset || 0;
const result = await queryHelper.all({
text: "SELECT chat FROM chat_members WHERE member = $1 LIMIT $2 OFFSET $3",
values: [this.id, first, offset],
});
if (result) {
return result.map((row) => new Chatroom(row.chat));
} else {
return [];
}
}
/**
* Returns all open requests the user has send.
*/
public async sentRequests() {
const result = await queryHelper.all({
cache: true,
text: "SELECT * FROM requests WHERE sender = $1",
values: [this.id],
});
return this.getRequests(result);
}
/**
* Returns all received requests of the user.
*/
public async receivedRequests() {
const result = await queryHelper.all({
cache: true,
text: "SELECT * FROM requests WHERE receiver = $1",
values: [this.id],
});
return this.getRequests(result);
}
/**
* Sets the greenpoints of a user.
* @param points
*/
public async setGreenpoints(points: number): Promise<number> {
const result = await queryHelper.first({
text: "UPDATE users SET greenpoints = $1 WHERE id = $2 RETURNING greenpoints",
values: [points, this.id],
});
return result.greenpoints;
}
/**
* Sets the email of the user
* @param email
*/
public async setEmail(email: string): Promise<string> {
const result = await queryHelper.first({
text: "UPDATE users SET email = $1 WHERE users.id = $2 RETURNING email",
values: [email, this.id],
});
return result.email;
}
/**
* Updates the handle of the user
*/
public async setHandle(handle: string): Promise<string> {
const result = await queryHelper.first({
text: "UPDATE users SET handle = $1 WHERE id = $2",
values: [handle, this.id],
});
return result.handle;
}
/**
* Sets the username of the user
* @param name
*/
public async setName(name: string): Promise<string> {
const result = await queryHelper.first({
text: "UPDATE users SET name = $1 WHERE id = $2",
values: [name, this.id],
});
return result.name;
}
/**
* Denys a request.
* @param sender
* @param type
*/
public async denyRequest(sender: number, type: dataaccess.RequestType) {
await queryHelper.first({
text: "DELETE FROM requests WHERE receiver = $1 AND sender = $2 AND type = $3",
values: [this.id, sender, type],
});
}
/**
* Accepts a request.
* @param sender
* @param type
*/
public async acceptRequest(sender: number, type: dataaccess.RequestType) {
const exists = await queryHelper.first({
cache: true,
text: "SELECT 1 FROM requests WHERE receiver = $1 AND sender = $2 AND type = $3",
values: [this.id, sender, type],
});
if (exists) {
if (type === dataaccess.RequestType.FRIENDREQUEST) {
await queryHelper.first({
text: "INSERT INTO user_friends (user_id, friend_id) VALUES ($1, $2)",
values: [this.id, sender],
});
}
} else {
throw new RequestNotFoundError(sender, this.id, type);
}
}
/**
* Returns request wrapper for a row database request result.
* @param rows
*/
private getRequests(rows: any) {
const requests = [];
const requestUsers: any = {};
for (const row of rows) {
let sender = requestUsers[row.sender];
if (!sender) {
sender = new User(row.sender);
requestUsers[row.sender] = sender;
}
let receiver = requestUsers[row.receiver];
if (!receiver) {
receiver = new User(row.receiver);
requestUsers[row.receiver] = receiver;
}
requests.push(new Request(sender, receiver, row.type));
}
return requests;
}
}

@ -0,0 +1,24 @@
import dataaccess from "./index";
import {User} from "./User";
/**
* Represents a request to a user.
*/
export class Request {
constructor(
public readonly sender: User,
public readonly receiver: User,
public readonly type: dataaccess.RequestType) {
}
/**
* Returns the resolved request data.
*/
public resolvedData() {
return {
receiverId: this.receiver.id,
senderId: this.sender.id,
type: this.type,
};
}
}

@ -0,0 +1,128 @@
import globals from "../globals";
import {DataObject} from "./DataObject";
import {queryHelper} from "./index";
import {Post} from "./Post";
export class User extends DataObject {
private $name: string;
private $handle: string;
private $email: string;
private $greenpoints: number;
private $joinedAt: string;
private $exists: boolean;
/**
* The name of the user
*/
public async name(): Promise<string> {
await this.loadDataIfNotExists();
return this.$name;
}
/**
* The unique handle of the user.
*/
public async handle(): Promise<string> {
await this.loadDataIfNotExists();
return this.$handle;
}
/**
* The email of the user
*/
public async email(): Promise<string> {
await this.loadDataIfNotExists();
return this.$email;
}
/**
* The number of greenpoints of the user
*/
public async greenpoints(): Promise<number> {
await this.loadDataIfNotExists();
return this.$greenpoints;
}
/**
* Returns the number of posts the user created
*/
public async numberOfPosts(): Promise<number> {
const result = await queryHelper.first({
cache: true,
text: "SELECT COUNT(*) count FROM posts WHERE author = $1",
values: [this.id],
});
return result.count;
}
/**
* The date the user joined the platform
*/
public async joinedAt(): Promise<Date> {
await this.loadDataIfNotExists();
return new Date(this.$joinedAt);
}
/**
* Returns all friends of the user.
*/
public async friends(): Promise<User[]> {
const result = await queryHelper.all({
cache: true,
text: "SELECT * FROM user_friends WHERE user_id = $1 OR friend_id = $1",
values: [this.id],
});
const userFriends = [];
for (const row of result) {
if (row.user_id === this.id) {
userFriends.push(new User(row.friend_id));
} else {
userFriends.push(new User(row.user_id));
}
}
return userFriends;
}
/**
* Returns all posts for a user.
*/
public async posts({first, offset}: {first: number, offset: number}): Promise<Post[]> {
first = first || 10;
offset = offset || 0;
const result = await queryHelper.all({
cache: true,
text: "SELECT * FROM posts WHERE author = $1 ORDER BY created_at DESC LIMIT $2 OFFSET $3",
values: [this.id, first, offset],
});
const posts = [];
for (const row of result) {
posts.push(new Post(row.id, row));
}
return posts;
}
/**
* Fetches the data for the user.
*/
protected async loadData(): Promise<void> {
let result: any;
if (this.row) {
result = this.row;
} else {
result = await queryHelper.first({
cache: true,
text: "SELECT * FROM users WHERE users.id = $1",
values: [this.id],
});
}
if (result) {
this.$name = result.name;
this.$handle = result.handle;
this.$email = result.email;
this.$greenpoints = result.greenpoints;
this.$joinedAt = result.joined_at;
this.dataLoaded = true;
}
}
}

@ -0,0 +1,258 @@
import {Pool} from "pg";
import {ChatNotFoundError} from "../errors/ChatNotFoundError";
import {EmailAlreadyRegisteredError} from "../errors/EmailAlreadyRegisteredError";
import {UserNotFoundError} from "../errors/UserNotFoundError";
import globals from "../globals";
import {InternalEvents} from "../InternalEvents";
import {QueryHelper} from "../QueryHelper";
import {ChatMessage} from "./ChatMessage";
import {Chatroom} from "./Chatroom";
import {Post} from "./Post";
import {Profile} from "./Profile";
import {Request} from "./Request";
import {User} from "./User";
const config = globals.config;
const tableCreationFile = __dirname + "/../../sql/create-tables.sql";
const tableUpdateFile = __dirname + "/../../sql/update-tables.sql";
const dbClient: Pool = new Pool({
database: config.database.database,
host: config.database.host,
password: config.database.password,
port: config.database.port,
user: config.database.user,
});
export const queryHelper = new QueryHelper(dbClient, tableCreationFile, tableUpdateFile);
/**
* Generates a new handle from the username and a base64 string of the current time.
* @param username
*/
function generateHandle(username: string) {
return `${username}.${Buffer.from(Date.now().toString()).toString("base64")}`;
}
/**
* Namespace with functions to fetch initial data for wrapping.
*/
namespace dataaccess {
export const pool: Pool = dbClient;
/**
* Initializes everything that needs to be initialized asynchronous.
*/
export async function init() {
try {
await queryHelper.init();
} catch (err) {
globals.logger.error(err.message);
globals.logger.debug(err.stack);
}
}
/**
* Returns the user by handle.
* @param userHandle
*/
export async function getUserByHandle(userHandle: string): Promise<User> {
const result = await queryHelper.first({
text: "SELECT * FROM users WHERE users.handle = $1",
values: [userHandle],
});
if (result) {
return new User(result.id, result);
} else {
throw new UserNotFoundError(userHandle);
}
}
/**
* Returns the user by email and password
* @param email
* @param password
*/
export async function getUserByLogin(email: string, password: string): Promise<Profile> {
const result = await queryHelper.first({
text: "SELECT * FROM users WHERE email = $1 AND password = $2",
values: [email, password],
});
if (result) {
return new Profile(result.id, result);
} else {
throw new UserNotFoundError(email);
}
}
/**
* Registers a user with a username and password returning a user
* @param username
* @param email
* @param password
*/
export async function registerUser(username: string, email: string, password: string) {
const existResult = await queryHelper.first({
text: "SELECT email FROM users WHERE email = $1;",
values: [email],
});
if (!existResult || !existResult.email) {
const result = await queryHelper.first({
text: "INSERT INTO users (name, handle, password, email) VALUES ($1, $2, $3, $4) RETURNING *",
values: [username, generateHandle(username), password, email],
});
return new Profile(result.id, result);
} else {
throw new EmailAlreadyRegisteredError(email);
}
}
/**
* Returns a post for a given postId.s
* @param postId
*/
export async function getPost(postId: number): Promise<Post> {
const result = await queryHelper.first({
text: "SELECT * FROM posts WHERE id = $1",
values: [postId],
});
if (result) {
return new Post(result.id, result);
} else {
return null;
}
}
/**
* Creates a post
* @param content
* @param authorId
* @param type
*/
export async function createPost(content: string, authorId: number, type?: string): Promise<Post> {
type = type || "MISC";
const result = await queryHelper.first({
text: "INSERT INTO posts (content, author, type) VALUES ($1, $2, $3) RETURNING *",
values: [content, authorId, type],
});
const post = new Post(result.id, result);
globals.internalEmitter.emit(InternalEvents.POSTCREATE, post);
return post;
}
/**
* Deletes a post
* @param postId
*/
export async function deletePost(postId: number): Promise<boolean> {
const result = await queryHelper.first({
text: "DELETE FROM posts WHERE posts.id = $1",
values: [postId],
});
return true;
}
/**
* Creates a chatroom containing two users
* @param members
*/
export async function createChat(...members: number[]): Promise<Chatroom> {
const idResult = await queryHelper.first({
text: "INSERT INTO chats (id) values (default) RETURNING *;",
});
const id = idResult.id;
const transaction = await queryHelper.createTransaction();
try {
await transaction.begin();
for (const member of members) {
await transaction.query({
name: "chat-member-insert",
text: "INSERT INTO chat_members (chat, member) VALUES ($1, $2);",
values: [id, member],
});
}
await transaction.commit();
} catch (err) {
globals.logger.warn(`Failed to insert chatmember into database: ${err.message}`);
globals.logger.debug(err.stack);
await transaction.rollback();
} finally {
transaction.release();
}
const chat = new Chatroom(id);
globals.internalEmitter.emit(InternalEvents.CHATCREATE, chat);
return chat;
}
/**
* Sends a message into a chat.
* @param authorId
* @param chatId
* @param content
*/
export async function sendChatMessage(authorId: number, chatId: number, content: string) {
const chat = new Chatroom(chatId);
if ((await chat.exists())) {
const result = await queryHelper.first({
text: "INSERT INTO chat_messages (chat, author, content) values ($1, $2, $3) RETURNING *",
values: [chatId, authorId, content],
});
const message = new ChatMessage(new User(result.author), chat, result.created_at, result.content);
globals.internalEmitter.emit(InternalEvents.CHATMESSAGE, message);
return message;
} else {
throw new ChatNotFoundError(chatId);
}
}
/**
* Returns all chats.
*/
export async function getAllChats(): Promise<Chatroom[]> {
const result = await queryHelper.all({
text: "SELECT id FROM chats;",
});
const chats = [];
for (const row of result) {
chats.push(new Chatroom(row.id));
}
return chats;
}
/**
* Sends a request to a user.
* @param sender
* @param receiver
* @param type
*/
export async function createRequest(sender: number, receiver: number, type?: RequestType) {
type = type || RequestType.FRIENDREQUEST;
const result = await queryHelper.first({
text: "INSERT INTO requests (sender, receiver, type) VALUES ($1, $2, $3) RETURNING *",
values: [sender, receiver, type],
});
const request = new Request(new User(result.sender), new User(result.receiver), result.type);
globals.internalEmitter.emit(InternalEvents.REQUESTCREATE, Request);
return request;
}
/**
* Enum representing the types of votes that can be performed on a post.
*/
export enum VoteType {
UPVOTE = "UPVOTE",
DOWNVOTE = "DOWNVOTE",
}
/**
* Enum representing the types of request that can be created.
*/
export enum RequestType {
FRIENDREQUEST = "FRIENDREQUEST",
GROUPINVITE = "GROUPINVITE",
EVENTINVITE = "EVENTINVITE",
}
}
export default dataaccess;

@ -0,0 +1,13 @@
import {GraphQLError} from "graphql";
/**
* Base error class.
*/
export class BaseError extends Error {
public readonly graphqlError: GraphQLError;
constructor(message?: string, friendlyMessage?: string) {
super(message);
this.graphqlError = new GraphQLError(friendlyMessage || message);
}
}

@ -0,0 +1,7 @@
import {BaseError} from "./BaseError";
export class ChatNotFoundError extends BaseError {
constructor(chatId: number) {
super(`Chat with id ${chatId} not found.`);
}
}

@ -0,0 +1,8 @@
import {BaseError} from "./BaseError";
export class EmailAlreadyRegisteredError extends BaseError {
constructor(email: string) {
super(`A user for '${email}' does already exist.`);
}
}

@ -0,0 +1,9 @@
import dataaccess from "../dataaccess";
import {BaseError} from "./BaseError";
export class RequestNotFoundError extends BaseError {
constructor(sender: number, receiver: number, type: dataaccess.RequestType) {
super(`Request with sender '${sender}' and receiver '${receiver}' of type '${type}' not found.`);
}
}

@ -0,0 +1,7 @@
import {BaseError} from "./BaseError";
export class UserNotFoundError extends BaseError {
constructor(username: string) {
super(`User ${username} not found!`);
}
}

@ -0,0 +1,9 @@
import {GraphQLError} from "graphql";
import {BaseError} from "./BaseError";
export class NotLoggedInGqlError extends GraphQLError {
constructor() {
super("Not logged in");
}
}

@ -0,0 +1,52 @@
/**
* @author Trivernis
* @remarks
*
* Partly taken from {@link https://github.com/Trivernis/whooshy}
*/
import {EventEmitter} from "events";
import * as fsx from "fs-extra";
import * as yaml from "js-yaml";
import * as winston from "winston";
import {MemoryCache} from "./MemoryCache";
const configPath = "config.yaml";
const defaultConfig = __dirname + "/../default-config.yaml";
// ensure that the config exists by copying the default config.
if (!(fsx.pathExistsSync(configPath))) {
fsx.copySync(defaultConfig, configPath);
} else {
const conf = yaml.safeLoad(fsx.readFileSync(configPath, "utf-8"));
const defConf = yaml.safeLoad(fsx.readFileSync(defaultConfig, "utf-8"));
fsx.writeFileSync(configPath, yaml.safeDump(Object.assign(defConf, conf)));
}
/**
* Defines global variables to be used.
*/
namespace globals {
export const config = yaml.safeLoad(fsx.readFileSync("config.yaml", "utf-8"));
export const cache = new MemoryCache(1200);
export const logger = winston.createLogger({
transports: [
new winston.transports.Console({
format: winston.format.combine(
winston.format.timestamp(),
winston.format.colorize(),
winston.format.printf(({ level, message, timestamp }) => {
return `${timestamp} ${level}: ${message}`;
}),
),
level: config.logging.level,
}),
],
});
export const internalEmitter = new EventEmitter();
cache.on("set", (key) => logger.debug(`Caching '${key}'.`));
cache.on("miss", (key) => logger.debug(`Cache miss for '${key}'`));
cache.on("hit", (key) => logger.debug(`Cache hit for '${key}'`));
}
export default globals;

@ -0,0 +1,36 @@
import * as MarkdownIt from "markdown-it/lib";
import globals from "./globals";
namespace markdown {
const md = new MarkdownIt();
for (const pluginName of globals.config.markdown.plugins) {
try {
const plugin = require(pluginName);
if (plugin) {
md.use(plugin);
}
} catch (err) {
globals.logger.warn(`Markdown-it plugin '${pluginName}' not found!`);
}
}
/**
* Renders the markdown string inline (without blocks).
* @param markdownString
*/
export function renderInline(markdownString: string) {
return md.renderInline(markdownString);
}
/**
* Renders the markdown string.
* @param markdownString
*/
export function render(markdownString: string) {
return md.render(markdownString);
}
}
export default markdown;

@ -0,0 +1,11 @@
export namespace is {
const emailRegex = /\S+?@\S+?(\.\S+?)?\.\w{2,3}(.\w{2-3})?/g;
/**
* Tests if a string is a valid email.
* @param testString
*/
export function email(testString: string) {
return emailRegex.test(testString);
}
}

@ -0,0 +1,5 @@
@mixin gridPosition($rowStart, $rowEnd, $columnStart, $columnEnd)
grid-row-start: $rowStart
grid-row-end: $rowEnd
grid-column-start: $columnStart
grid-column-end: $columnEnd

@ -0,0 +1,108 @@
@import "vars"
@import "mixins"
body
font-family: Arial, serif
button
border: 2px solid $cPrimary
margin-top: 0.125em
padding: 0.125em
background-color: $cPrimary
color: $cPrimarySurface
font-weight: bold
transition-duration: 0.25s
button:hover
background-color: lighten($cPrimary, 10%)
cursor: pointer
button:active
background-color: darken($cPrimary, 5%)
box-shadow: inset 0.25em 0.25em 0.1em rgba(0, 0, 0, 0.25)
.stylebar
@include gridPosition(1, 2, 1, 4)
display: grid
grid-template: 100% /25% 50% 25%
background-color: $cPrimary
color: $cPrimarySurface
h1
@include gridPosition(1, 2, 1, 2)
text-align: center
margin: auto
#content
grid-template: 7.5% 92.5% / 25% 50% 25%
display: grid
width: 100%
height: 100%
#friendscontainer
@include gridPosition(2, 3, 1, 2)
background-color: $cPrimaryBackground
#input-login
margin-top: 1em
@include gridPosition(2,3,2,3)
grid-template: 7.5% 7.5% 7.5% 7.5% 72%/ 100%
display: grid
background-color: $cPrimaryBackground
input
margin: 0.25em
.loginButton
margin: 0.25em
#input-register
margin-top: 1em
@include gridPosition(2,3,2,3)
grid-template: 7.5% 7.5% 7.5% 7.5% 7.5% 7.5% 58%/ 100%
display: grid
background-color: $cPrimaryBackground
input
margin: 0.25em
.registerButton
margin: 0.25em
#feedcontainer
@include gridPosition(2, 3, 2, 3)
background-color: $cSecondaryBackground
.postinput
margin: 0.5em
input
width: 100%
border-radius: 0.25em
border: 1px solid $cPrimary
padding: 0.125em
height: 2em
button.submitbutton
border-radius: 0.25em
height: 2em
.feeditem
background-color: $cPrimaryBackground
min-height: 2em
margin: 0.5em
padding: 0.25em
border-radius: 0.25em
.itemhead
align-items: flex-start
.title, .handle, .date
margin: 0.125em
.title
font-weight: bold
.handle, .date
color: $cInactiveText
.handle a
text-decoration: none
color: $cInactiveText
font-style: normal
.handle a:hover
text-decoration: underline

@ -0,0 +1,5 @@
$cPrimaryBackground: #fff
$cSecondaryBackground: #ddd
$cInactiveText: #555
$cPrimary: #0d6b14
$cPrimarySurface: #fff

@ -0,0 +1,101 @@
import {Router} from "express";
import {Namespace, Server} from "socket.io";
import dataaccess from "../lib/dataaccess";
import {ChatMessage} from "../lib/dataaccess/ChatMessage";
import {Chatroom} from "../lib/dataaccess/Chatroom";
import {Post} from "../lib/dataaccess/Post";
import {Request} from "../lib/dataaccess/Request";
import globals from "../lib/globals";
import {InternalEvents} from "../lib/InternalEvents";
import Route from "../lib/Route";
/**
* list of chatroom socket namespaces.
*/
const chatRooms: Namespace[] = [];
/**
* Class for the home route.
*/
class HomeRoute extends Route {
/**
* Constructor, creates new router.
*/
constructor() {
super();
this.router = Router();
}
/**
* Asynchronous init for socket.io.
* @param io - the io instance
*/
public async init(io: Server) {
this.io = io;
io.on("connection", (socket) => {
socket.on("postCreate", async (content) => {
if (socket.handshake.session.userId) {
const post = await dataaccess.createPost(content, socket.handshake.session.userId);
io.emit("post", await post.resolvedData());
} else {
socket.emit("error", "Not logged in!");
}
});
globals.internalEmitter.on(InternalEvents.REQUESTCREATE, (request: Request) => {
if (request.receiver.id === socket.handshake.session.userId) {
socket.emit("request", request.resolvedData());
}
});
globals.internalEmitter.on(InternalEvents.GQLPOSTCREATE, async (post: Post) => {
socket.emit("post", await post.resolvedData());
});
});
const chats = await dataaccess.getAllChats();
for (const chat of chats) {
chatRooms[chat.id] = this.getChatSocketNamespace(chat.id);
}
globals.internalEmitter.on(InternalEvents.CHATCREATE, (chat: Chatroom) => {
chatRooms[chat.id] = this.getChatSocketNamespace(chat.id);
});
}
/**
* Destroys the instance by dereferencing the router and resolver.
*/
public async destroy(): Promise<void> {
this.router = null;
}
/**
* Returns the namespace socket for a chat socket.
* @param chatId
*/
private getChatSocketNamespace(chatId: number) {
if (chatRooms[chatId]) {
return chatRooms[chatId];
}
const chatNs = this.io.of(`/chat/${chatId}`);
chatNs.on("connection", (socket) => {
socket.on("chatMessage", async (content) => {
if (socket.handshake.session.userId) {
const userId = socket.handshake.session.userId;
const message = await dataaccess.sendChatMessage(userId, chatId, content);
socket.broadcast.emit("chatMessage", message.resolvedContent());
socket.emit("chatMessageSent", message.resolvedContent());
} else {
socket.emit("error", "Not logged in!");
}
});
globals.internalEmitter.on(InternalEvents.GQLCHATMESSAGE, (message: ChatMessage) => {
if (message.chat.id === chatId) {
socket.emit("chatMessage", message.resolvedContent());
}
});
});
return chatNs;
}
}
export default HomeRoute;

@ -0,0 +1,34 @@
/**
* @author Trivernis
* @remarks
*
* Taken from {@link https://github.com/Trivernis/whooshy}
*/
import {Router} from "express";
import {Server} from "socket.io";
import HomeRoute from "./home";
const homeRoute = new HomeRoute();
/**
* Namespace to manage the routes of the server.
* Allows easier assignments of graphql endpoints, socket.io connections and routers when
* used with {@link Route}.
*/
namespace routes {
export const router = Router();
router.use("/", homeRoute.router);
/**
* Assigns the io listeners or namespaces to the routes
* @param io
*/
export const ioListeners = async (io: Server) => {
await homeRoute.init(io);
};
}
export default routes;

@ -0,0 +1,137 @@
--create functions
DO $$BEGIN
IF NOT EXISTS(SELECT 1 from pg_proc WHERE proname = 'function_exists') THEN
CREATE FUNCTION function_exists(text) RETURNS boolean LANGUAGE plpgsql AS $BODY$
BEGIN
RETURN EXISTS(SELECT 1 from pg_proc WHERE proname = $1);
END $BODY$;
END IF;
IF NOT function_exists('type_exists') THEN
CREATE FUNCTION type_exists(text) RETURNS boolean LANGUAGE plpgsql AS $BODY$
BEGIN
RETURN EXISTS (SELECT 1 FROM pg_type WHERE typname = $1);
END $BODY$;
END IF;
END$$;
--create types
DO $$ BEGIN
IF NOT type_exists('votetype') THEN
CREATE TYPE votetype AS enum ('DOWNVOTE', 'UPVOTE');
END IF;
IF NOT type_exists('posttype') THEN
CREATE TYPE posttype AS enum ('MISC', 'ACTION', 'IMAGE', 'TEXT');
END IF;
IF NOT type_exists('requesttype') THEN
CREATE TYPE requesttype AS enum ('FRIENDREQUEST');
END IF;
END$$;
-- create functions relying on types
DO $$ BEGIN
IF NOT function_exists('cast_to_votetype') THEN
CREATE FUNCTION cast_to_votetype(text) RETURNS votetype LANGUAGE plpgsql AS $BODY$
BEGIN
RETURN CASE WHEN $1::votetype IS NULL THEN 'UPVOTE' ELSE $1::votetype END;
END $BODY$;
END IF;
IF NOT function_exists('cast_to_posttype') THEN
CREATE FUNCTION cast_to_posttype(text) RETURNS posttype LANGUAGE plpgsql AS $BODY$
BEGIN
RETURN CASE WHEN $1::posttype IS NULL THEN 'MISC' ELSE $1::posttype END;
END $BODY$;
END IF;
END$$;
-- create tables
DO $$ BEGIN
CREATE TABLE IF NOT EXISTS "user_sessions" (
"sid" varchar NOT NULL,
"sess" json NOT NULL,
"expire" timestamp(6) NOT NULL,
PRIMARY KEY ("sid") NOT DEFERRABLE INITIALLY IMMEDIATE
) WITH (OIDS=FALSE);
CREATE TABLE IF NOT EXISTS users (
id SERIAL PRIMARY KEY,
name varchar(128) NOT NULL,
handle varchar(128) UNIQUE NOT NULL,
password varchar(1024) NOT NULL,
email varchar(128) UNIQUE NOT NULL,
greenpoints INTEGER DEFAULT 0,
joined_at TIMESTAMP DEFAULT now()
);
CREATE TABLE IF NOT EXISTS posts (
id BIGSERIAL PRIMARY KEY,
upvotes INTEGER DEFAULT 0,
downvotes INTEGER DEFAULT 0,
created_at TIMESTAMP DEFAULT now(),
content text,
author SERIAL REFERENCES users (id) ON DELETE CASCADE,
type posttype NOT NULL DEFAULT 'MISC'
);
CREATE TABLE IF NOT EXISTS votes (
user_id SERIAL REFERENCES users (id) ON DELETE CASCADE,
item_id BIGSERIAL REFERENCES posts (id) ON DELETE CASCADE,
vote_type votetype DEFAULT 'DOWNVOTE',
PRIMARY KEY (user_id, item_id)
);
CREATE TABLE IF NOT EXISTS events (
id BIGSERIAL PRIMARY KEY,
time TIMESTAMP,
owner SERIAL REFERENCES users (id)
);
CREATE TABLE IF NOT EXISTS event_members (
event BIGSERIAL REFERENCES events (id),
member SERIAL REFERENCES users (id),
PRIMARY KEY (event, member)
);
CREATE TABLE IF NOT EXISTS chats (
id BIGSERIAL PRIMARY KEY
);
CREATE TABLE IF NOT EXISTS chat_messages (
chat BIGSERIAL REFERENCES chats (id) ON DELETE CASCADE,
author SERIAL REFERENCES users (id) ON DELETE SET NULL,
content VARCHAR(1024) NOT NULL,
created_at TIMESTAMP DEFAULT now(),
PRIMARY KEY (chat, author, created_at)
);
CREATE TABLE IF NOT EXISTS chat_members (
chat BIGSERIAL REFERENCES chats (id) ON DELETE CASCADE,
member SERIAL REFERENCES users (id) ON DELETE CASCADE,
PRIMARY KEY (chat, member)
);
CREATE TABLE IF NOT EXISTS user_friends (
user_id SERIAL REFERENCES users (id) ON DELETE CASCADE,
friend_id SERIAL REFERENCES users (id) ON DELETE CASCADE,
PRIMARY KEY (user_id, friend_id)
);
CREATE TABLE IF NOT EXISTS requests (
sender SERIAL REFERENCES users (id) ON DELETE CASCADE,
receiver SERIAL REFERENCES users (id) ON DELETE CASCADE,
type requesttype DEFAULT 'FRIENDREQUEST',
PRIMARY KEY (sender, receiver, type)
);
END $$;

@ -0,0 +1,19 @@
DO $$ BEGIN
ALTER TABLE IF EXISTS votes
ADD COLUMN IF NOT EXISTS vote_type votetype DEFAULT 'UPVOTE',
ALTER COLUMN vote_type TYPE votetype USING cast_to_votetype(vote_type::text),
ALTER COLUMN vote_type DROP DEFAULT,
ALTER COLUMN vote_type SET DEFAULT 'UPVOTE';
ALTER TABLE IF EXISTS posts
ALTER COLUMN type TYPE posttype USING cast_to_posttype(type::text),
ALTER COLUMN type DROP DEFAULT,
ALTER COLUMN type SET DEFAULT 'MISC',
DROP COLUMN IF EXISTS upvotes,
DROP COLUMN IF EXISTS downvotes;
ALTER TABLE requests
ADD COLUMN IF NOT EXISTS type requesttype DEFAULT 'FRIENDREQUEST';
END $$;

@ -0,0 +1,31 @@
{
"extends": "tslint:recommended",
"rulesDirectory": [],
"rules": {
"max-line-length": {
"options": [120]
},
"new-parens": true,
"no-arg": true,
"no-bitwise": true,
"no-conditional-assignment": true,
"no-consecutive-blank-lines": false,
"cyclomatic-complexity": true,
"brace-style": "1tbs",
"semicolon": true,
"indent": [true, "spaces", 4],
"no-shadowed-variable": true,
"no-console": {
"severity": "warning",
"options": ["debug", "info", "log", "time", "timeEnd", "trace"]
},
"no-namespace": false,
"no-internal-module": false,
"max-classes-per-file": false
},
"jsRules": {
"max-line-length": {
"options": [120]
}
}
}
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