Added Sequelize
- added sequelize for database management - added sequelize models under dataaccess/datamodels - removed postgres-only stuffpull/2/head
Trivernis
5 years ago
parent
b671845337
commit
57338355a7
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@ -1,212 +0,0 @@
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/**
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* @author Trivernis
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* @remarks
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*
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* Taken from {@link https://github.com/Trivernis/whooshy}
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*/
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import * as fsx from "fs-extra";
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import {Pool, PoolClient, QueryConfig, QueryResult} from "pg";
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import globals from "./globals";
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const logger = globals.logger;
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export interface IAdvancedQueryConfig extends QueryConfig {
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cache?: boolean;
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}
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/**
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* Transaction class to wrap SQL transactions.
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*/
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export class SqlTransaction {
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/**
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* Constructor.
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* @param client
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*/
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constructor(private client: PoolClient) {
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}
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/**
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* Begins the transaction.
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*/
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public async begin() {
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return await this.client.query("BEGIN");
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}
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/**
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* Commits the transaction
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*/
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public async commit() {
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return await this.client.query("COMMIT");
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}
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/**
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* Rolls back the transaction
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*/
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public async rollback() {
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return await this.client.query("ROLLBACK");
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}
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/**
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* Executes a query inside the transaction.
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* @param query
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*/
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public async query(query: QueryConfig) {
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return await this.client.query(query);
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}
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/**
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* Releases the client back to the pool.
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*/
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public release() {
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this.client.release();
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}
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}
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/**
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* Query helper for easyer fetching of a specific row count.
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*/
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export class QueryHelper {
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private pool: Pool;
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/**
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* Constructor.
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* @param pgPool
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* @param [tableCreationFile]
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* @param [tableUpdateFile]
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*/
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constructor(pgPool: Pool, private tableCreationFile?: string, private tableUpdateFile?: string) {
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this.pool = pgPool;
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}
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/**
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* Async init function
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*/
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public async init() {
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await this.pool.connect();
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await this.createTables();
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await this.updateTableDefinitions();
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}
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/**
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* creates all tables needed if a filepath was given with the constructor
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*/
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public async createTables() {
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if (this.tableCreationFile) {
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logger.info("Creating nonexistent tables...");
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const tableSql = await fsx.readFile(this.tableCreationFile, "utf-8");
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const trans = await this.createTransaction();
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await trans.begin();
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try {
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await trans.query({text: tableSql});
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await trans.commit();
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} catch (err) {
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globals.logger.error(`Error on table creation ${err.message}`);
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globals.logger.debug(err.stack);
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await trans.rollback();
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} finally {
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trans.release();
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}
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}
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}
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/**
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* Updates the definition of the tables if the table update file was passed in the constructor
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*/
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public async updateTableDefinitions() {
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if (this.tableUpdateFile) {
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logger.info("Updating table definitions...");
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const tableSql = await fsx.readFile(this.tableUpdateFile, "utf-8");
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const trans = await this.createTransaction();
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await trans.begin();
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try {
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await trans.query({text: tableSql});
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await trans.commit();
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} catch (err) {
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globals.logger.error(`Error on table update ${err.message}`);
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globals.logger.debug(err.stack);
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await trans.rollback();
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} finally {
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trans.release();
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}
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}
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}
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/**
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* executes the sql query with values and returns all results.
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* @param query
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*/
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public async all(query: IAdvancedQueryConfig): Promise<any[]> {
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const result = await this.query(query);
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return result.rows;
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}
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/**
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* executes the sql query with values and returns the first result.
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* @param query
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*/
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public async first(query: IAdvancedQueryConfig): Promise<any> {
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const result = await this.query(query);
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if (result.rows && result.rows.length > 0) {
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return result.rows[0];
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}
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}
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/**
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* Creates a new Transaction to be uses with error handling.
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*/
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public async createTransaction() {
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const client: PoolClient = await this.pool.connect();
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return new SqlTransaction(client);
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}
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/**
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* Queries the database with error handling.
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* @param query - the sql and values to execute
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*/
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private async query(query: IAdvancedQueryConfig): Promise<QueryResult|{rows: any}> {
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try {
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query.text = query.text.replace(/[\r\n]/g, " ");
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globals.logger.silly(`Executing sql '${JSON.stringify(query)}'`);
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if (query.cache) {
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const key = globals.cache.hashKey(JSON.stringify(query));
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const cacheResult = globals.cache.get(key);
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if (cacheResult) {
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return cacheResult;
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} else {
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const result = await this.pool.query(query);
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globals.cache.set(key, result);
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return result;
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}
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} else {
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return await this.pool.query(query);
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}
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} catch (err) {
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logger.debug(`Error on query "${JSON.stringify(query)}".`);
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logger.error(`Sql query failed: ${err}`);
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logger.verbose(err.stack);
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return {
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rows: null,
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};
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}
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}
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}
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/**
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* Returns the parameterized value sql for inserting
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* @param columnCount
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* @param rowCount
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* @param [offset]
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*/
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export function buildSqlParameters(columnCount: number, rowCount: number, offset?: number): string {
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let sql = "";
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for (let i = 0; i < rowCount; i++) {
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sql += "(";
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for (let j = 0; j < columnCount; j++) {
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sql += `$${(i * columnCount) + j + 1 + offset},`;
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}
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sql = sql.replace(/,$/, "") + "),";
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}
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return sql.replace(/,$/, "");
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}
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@ -1,31 +1,38 @@
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import markdown from "../markdown";
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import markdown from "../markdown";
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import {Chatroom} from "./Chatroom";
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import {Chatroom} from "./Chatroom";
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import * as models from "./datamodels/models";
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import {User} from "./User";
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import {User} from "./User";
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export class ChatMessage {
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export class ChatMessage {
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constructor(
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public readonly author: User,
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public id: number;
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public readonly chat: Chatroom,
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public content: string;
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public readonly createdAt: number,
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public createdAt: Date;
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public readonly content: string) {}
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constructor(private message: models.ChatMessage) {
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this.id = message.id;
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this.content = message.content;
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this.createdAt = message.createdAt;
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}
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/**
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* returns the author of the chat message.
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*/
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public async author(): Promise<User> {
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return new User(await this.message.getAuthor());
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}
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/**
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/**
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* The content rendered by markdown-it.
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* Returns the rendered html content of the chat message.
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*/
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*/
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public htmlContent(): string {
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public htmlContent(): string {
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return markdown.renderInline(this.content);
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return markdown.renderInline(this.content);
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}
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}
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/**
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/**
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* Returns resolved and rendered content of the chat message.
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* returns the chatroom for the chatmessage.
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*/
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*/
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public resolvedContent() {
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public async chat(): Promise<Chatroom> {
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return {
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return (await this.message.getChat()).chatroom;
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author: this.author.id,
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chat: this.chat.id,
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content: this.content,
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createdAt: this.createdAt,
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htmlContent: this.htmlContent(),
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};
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}
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}
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}
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}
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/**
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* abstact DataObject class
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*/
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import {EventEmitter} from "events";
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export abstract class DataObject extends EventEmitter {
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protected dataLoaded: boolean = false;
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private loadingData: boolean = false;
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constructor(public id: number, protected row?: any) {
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super();
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this.id = Number(id);
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}
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/**
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* Returns if the object extists by trying to load data.
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*/
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public async exists() {
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await this.loadDataIfNotExists();
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return this.dataLoaded;
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}
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protected abstract loadData(): Promise<void>;
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/**
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* Loads data from the database if data has not been loaded
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*/
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protected async loadDataIfNotExists() {
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if (!this.dataLoaded && !this.loadingData) {
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this.loadingData = true;
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await this.loadData();
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this.loadingData = false;
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this.emit("loaded");
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} else if (this.loadingData) {
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return new Promise((res) => {
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this.on("loaded", () => res());
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});
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}
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}
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}
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import dataaccess from "./index";
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import {User} from "./User";
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/**
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* Represents a request to a user.
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*/
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export class Request {
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constructor(
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public readonly sender: User,
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public readonly receiver: User,
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public readonly type: dataaccess.RequestType) {
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}
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/**
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* Returns the resolved request data.
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*/
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public resolvedData() {
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return {
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receiverId: this.receiver.id,
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senderId: this.sender.id,
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type: this.type,
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};
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}
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}
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export {
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init as datainit,
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User as SqUser,
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Post as SqPost,
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Chat as SqChat,
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Request as SqRequest,
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PostVotes as SqPostVotes,
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ChatMessage as SqChatMessage,
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ChatMembers as SqChatMembers,
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RequestType as SqRequestType,
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UserFriends as SqUserFriends,
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} from "./models";
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// tslint:disable:object-literal-sort-keys
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import * as sqz from "sequelize";
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import {
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Association,
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BelongsToGetAssociationMixin,
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BelongsToManyAddAssociationMixin,
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BelongsToManyCountAssociationsMixin,
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BelongsToManyCreateAssociationMixin,
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BelongsToManyGetAssociationsMixin,
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BelongsToManyHasAssociationMixin,
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DataTypes,
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HasManyAddAssociationMixin,
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HasManyCountAssociationsMixin,
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HasManyCreateAssociationMixin,
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HasManyGetAssociationsMixin,
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HasManyHasAssociationMixin,
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HasOneGetAssociationMixin,
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Model,
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Sequelize,
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} from "sequelize";
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import * as wrappers from "../wrappers";
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const underscored = true;
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enum VoteType {
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UPVOTE = "UPVOTE",
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DOWNVOTE = "DOWNVOTE",
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}
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export enum RequestType {
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FRIENDREQUEST = "FRIENDREQUEST",
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GROUPINVITE = "GROUPINVITE",
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EVENTINVITE = "EVENTINVITE",
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}
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export class User extends Model {
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public static associations: {
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friends: Association<User, User>;
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posts: Association<User, Post>;
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votes: Association<User, PostVotes>;
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requests: Association<User, Request>;
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};
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public id!: number;
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public username!: string;
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public handle!: string;
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public email!: string;
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public password!: string;
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public rankpoints!: number;
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public readonly createdAt!: Date;
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public readonly updatedAt!: Date;
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public getFriends!: HasManyGetAssociationsMixin<User>;
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public addFriend!: HasManyAddAssociationMixin<User, number>;
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public hasFriend!: HasManyHasAssociationMixin<User, number>;
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public countFriends!: HasManyCountAssociationsMixin;
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public getPosts!: HasManyGetAssociationsMixin<Post>;
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public addPost!: HasManyAddAssociationMixin<Post, number>;
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public hasPost!: HasManyHasAssociationMixin<Post, number>;
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public countPosts!: HasManyCountAssociationsMixin;
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public createPost!: HasManyCreateAssociationMixin<Post>;
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public getReceivedRequests!: HasManyGetAssociationsMixin<Request>;
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public addReceivedRequest!: HasManyAddAssociationMixin<Request, number>;
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public hasReceivedRequest!: HasManyHasAssociationMixin<Request, number>;
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public countReceivedRequests!: HasManyCountAssociationsMixin;
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public createReceivedRequest!: HasManyCreateAssociationMixin<Request>;
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public getSentRequests!: HasManyGetAssociationsMixin<Request>;
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public addSentRequest!: HasManyAddAssociationMixin<Request, number>;
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public hasSentRequest!: HasManyHasAssociationMixin<Request, number>;
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public countSentRequests!: HasManyCountAssociationsMixin;
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public createSentRequest!: HasManyCreateAssociationMixin<Request>;
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public getChats!: BelongsToManyGetAssociationsMixin<Chat>;
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public addChat!: BelongsToManyAddAssociationMixin<Chat, number>;
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public hasChat!: BelongsToManyHasAssociationMixin<Chat, number>;
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||||||
|
public countChats!: BelongsToManyCountAssociationsMixin;
|
||||||
|
public createChat!: BelongsToManyCreateAssociationMixin<Chat>;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Getter for joined at as the date the entry was created.
|
||||||
|
*/
|
||||||
|
public get joinedAt(): Date {
|
||||||
|
// @ts-ignore
|
||||||
|
return this.getDataValue("createdAt");
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Wraps itself into a user
|
||||||
|
*/
|
||||||
|
public get user(): wrappers.User {
|
||||||
|
return new wrappers.User(this);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* returns the username.
|
||||||
|
*/
|
||||||
|
public get name(): string {
|
||||||
|
return this.getDataValue("username");
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Wraps itself into a profile.
|
||||||
|
*/
|
||||||
|
public get profile(): wrappers.Profile {
|
||||||
|
return new wrappers.Profile(this);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
export class UserFriends extends Model {
|
||||||
|
}
|
||||||
|
|
||||||
|
export class Post extends Model {
|
||||||
|
|
||||||
|
public static associations: {
|
||||||
|
author: Association<Post, User>,
|
||||||
|
votes: Association<Post, PostVotes>,
|
||||||
|
};
|
||||||
|
|
||||||
|
public id!: number;
|
||||||
|
public content!: string;
|
||||||
|
|
||||||
|
public readonly createdAt!: Date;
|
||||||
|
public readonly updatedAt!: Date;
|
||||||
|
|
||||||
|
public getUser!: BelongsToGetAssociationMixin<User>;
|
||||||
|
|
||||||
|
public getVotes!: HasManyGetAssociationsMixin<PostVotes>;
|
||||||
|
public addVote!: HasManyAddAssociationMixin<PostVotes, number>;
|
||||||
|
public hasVote!: HasManyHasAssociationMixin<PostVotes, number>;
|
||||||
|
public countVotes!: HasManyCountAssociationsMixin;
|
||||||
|
public createVote!: HasManyCreateAssociationMixin<PostVotes>;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Wraps itself into a Post instance.
|
||||||
|
*/
|
||||||
|
public get post(): wrappers.Post {
|
||||||
|
return new wrappers.Post(this);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
export class PostVotes extends Model {
|
||||||
|
public voteType: VoteType;
|
||||||
|
}
|
||||||
|
|
||||||
|
export class Request extends Model {
|
||||||
|
public id!: number;
|
||||||
|
public requestType!: RequestType;
|
||||||
|
|
||||||
|
public getSender!: HasOneGetAssociationMixin<User>;
|
||||||
|
public getReceiver!: HasOneGetAssociationMixin<User>;
|
||||||
|
}
|
||||||
|
|
||||||
|
export class Chat extends Model {
|
||||||
|
public static associations: {
|
||||||
|
members: Association<Chat, User>,
|
||||||
|
messages: Association<Chat, ChatMessage>,
|
||||||
|
};
|
||||||
|
|
||||||
|
public id!: number;
|
||||||
|
|
||||||
|
public readonly createdAt!: Date;
|
||||||
|
public readonly updatedAt!: Date;
|
||||||
|
|
||||||
|
public getMembers!: BelongsToManyGetAssociationsMixin<User>;
|
||||||
|
public addMember!: BelongsToManyAddAssociationMixin<User, number>;
|
||||||
|
public hasMember!: BelongsToManyHasAssociationMixin<User, number>;
|
||||||
|
public countMembers!: BelongsToManyCountAssociationsMixin;
|
||||||
|
|
||||||
|
public getMessages!: HasManyGetAssociationsMixin<ChatMessage>;
|
||||||
|
public addMessage!: HasManyAddAssociationMixin<ChatMessage, number>;
|
||||||
|
public hasMessage!: HasManyHasAssociationMixin<ChatMessage, number>;
|
||||||
|
public countMessages!: HasManyCountAssociationsMixin;
|
||||||
|
public createMessage!: HasManyCreateAssociationMixin<ChatMessage>;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* wraps itself into a chatroom.
|
||||||
|
*/
|
||||||
|
public get chatroom(): wrappers.Chatroom {
|
||||||
|
return new wrappers.Chatroom(this);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
export class ChatMembers extends Model {
|
||||||
|
}
|
||||||
|
|
||||||
|
export class ChatMessage extends Model {
|
||||||
|
public id: number;
|
||||||
|
public content!: string;
|
||||||
|
public readonly createdAt!: Date;
|
||||||
|
public readonly updatedAt!: Date;
|
||||||
|
|
||||||
|
public getAuthor!: BelongsToGetAssociationMixin<User>;
|
||||||
|
public getChat!: BelongsToGetAssociationMixin<Chat>;
|
||||||
|
|
||||||
|
public get message(): wrappers.ChatMessage {
|
||||||
|
return new wrappers.ChatMessage(this);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
export function init(sequelize: Sequelize) {
|
||||||
|
User.init({
|
||||||
|
username: {
|
||||||
|
allowNull: false,
|
||||||
|
type: sqz.STRING(128),
|
||||||
|
},
|
||||||
|
handle: {
|
||||||
|
allowNull: false,
|
||||||
|
type: sqz.STRING(128),
|
||||||
|
unique: true,
|
||||||
|
},
|
||||||
|
email: {
|
||||||
|
allowNull: false,
|
||||||
|
type: sqz.STRING(128),
|
||||||
|
unique: true,
|
||||||
|
},
|
||||||
|
password: {
|
||||||
|
allowNull: false,
|
||||||
|
type: sqz.STRING(128),
|
||||||
|
},
|
||||||
|
rankpoints: {
|
||||||
|
allowNull: false,
|
||||||
|
type: DataTypes.INTEGER,
|
||||||
|
defaultValue: 0,
|
||||||
|
},
|
||||||
|
}, {sequelize, underscored});
|
||||||
|
|
||||||
|
UserFriends.init({}, {sequelize, underscored});
|
||||||
|
|
||||||
|
Post.init({
|
||||||
|
content: DataTypes.TEXT,
|
||||||
|
}, {sequelize, underscored});
|
||||||
|
|
||||||
|
PostVotes.init({
|
||||||
|
voteType: {
|
||||||
|
type: DataTypes.ENUM,
|
||||||
|
values: ["UPVOTE", "DOWNVOTE"],
|
||||||
|
},
|
||||||
|
}, {sequelize, underscored});
|
||||||
|
|
||||||
|
Request.init({
|
||||||
|
requestType: {
|
||||||
|
type: DataTypes.ENUM,
|
||||||
|
values: ["FRIENDREQUEST", "GROUPINVITE", "EVENTINVITE"],
|
||||||
|
},
|
||||||
|
}, {sequelize, underscored});
|
||||||
|
|
||||||
|
Chat.init({}, {sequelize, underscored});
|
||||||
|
|
||||||
|
ChatMembers.init({}, {sequelize, underscored});
|
||||||
|
|
||||||
|
ChatMessage.init({
|
||||||
|
content: {
|
||||||
|
type: DataTypes.TEXT,
|
||||||
|
allowNull: false,
|
||||||
|
},
|
||||||
|
}, {sequelize, underscored});
|
||||||
|
|
||||||
|
User.belongsToMany(User, {through: UserFriends, as: "friends"});
|
||||||
|
Post.belongsTo(User, {foreignKey: "userId"});
|
||||||
|
User.hasMany(Post, {as: "posts", foreignKey: "userId"});
|
||||||
|
Post.belongsToMany(User, {through: PostVotes, as: "votes"});
|
||||||
|
User.belongsToMany(Post, {through: PostVotes, as: "votes"});
|
||||||
|
User.hasMany(Request, {as: "sentRequests"});
|
||||||
|
User.hasMany(Request, {as: "receivedRequests"});
|
||||||
|
User.belongsToMany(Chat, {through: ChatMembers});
|
||||||
|
Chat.belongsToMany(User, {through: ChatMembers, as: "members"});
|
||||||
|
Chat.hasMany(ChatMessage, {as: "messages"});
|
||||||
|
ChatMessage.belongsTo(Chat);
|
||||||
|
ChatMessage.belongsTo(User, {as: "author", foreignKey: "userId"});
|
||||||
|
User.hasMany(ChatMessage, {foreignKey: "userId"});
|
||||||
|
}
|
||||||
|
|
||||||
@ -0,0 +1,5 @@
|
|||||||
|
export {User} from "./User";
|
||||||
|
export {Chatroom} from "./Chatroom";
|
||||||
|
export {Post} from "./Post";
|
||||||
|
export {Profile} from "./Profile";
|
||||||
|
export {ChatMessage} from "./ChatMessage";
|
||||||
Loading…
Reference in New Issue