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@ -1,6 +1,9 @@
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import {Pool} from "pg";
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import {Pool} from "pg";
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import {ChatNotFoundError} from "../errors/ChatNotFoundError";
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import {UserNotFoundError} from "../errors/UserNotFoundError";
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import globals from "../globals";
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import globals from "../globals";
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import {QueryHelper} from "../QueryHelper";
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import {QueryHelper} from "../QueryHelper";
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import {ChatMessage} from "./ChatMessage";
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import {Chatroom} from "./Chatroom";
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import {Chatroom} from "./Chatroom";
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import {Post} from "./Post";
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import {Post} from "./Post";
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import {Profile} from "./Profile";
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import {Profile} from "./Profile";
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@ -27,6 +30,9 @@ function generateHandle(username: string) {
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return `${username}.${Buffer.from(Date.now().toString()).toString("base64")}`;
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return `${username}.${Buffer.from(Date.now().toString()).toString("base64")}`;
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}
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}
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/**
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* Namespace with functions to fetch initial data for wrapping.
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*/
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namespace dataaccess {
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namespace dataaccess {
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export const pool: Pool = dbClient;
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export const pool: Pool = dbClient;
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@ -39,24 +45,20 @@ namespace dataaccess {
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await queryHelper.createTables();
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await queryHelper.createTables();
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}
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}
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/**
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* Returns the user by id
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* @param userId
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*/
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export function getUser(userId: number) {
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return new User(userId);
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}
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/**
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/**
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* Returns the user by handle.
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* Returns the user by handle.
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* @param userHandle
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* @param userHandle
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*/
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*/
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export async function getUserByHandle(userHandle: string) {
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export async function getUserByHandle(userHandle: string): Promise<User> {
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const result = await queryHelper.first({
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const result = await queryHelper.first({
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text: "SELECT * FROM users WHERE users.handle = $1",
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text: "SELECT * FROM users WHERE users.handle = $1",
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values: [userHandle],
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values: [userHandle],
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});
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});
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if (result) {
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return new User(result.id, result);
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return new User(result.id, result);
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} else {
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throw new UserNotFoundError(userHandle);
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}
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}
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}
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/**
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/**
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@ -72,7 +74,7 @@ namespace dataaccess {
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if (result) {
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if (result) {
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return new Profile(result.id, result);
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return new Profile(result.id, result);
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} else {
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} else {
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return null;
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throw new UserNotFoundError(email);
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}
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}
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}
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}
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@ -94,7 +96,7 @@ namespace dataaccess {
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* Returns a post for a given postId.s
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* Returns a post for a given postId.s
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* @param postId
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* @param postId
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*/
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*/
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export async function getPost(postId: number) {
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export async function getPost(postId: number): Promise<Post> {
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const result = await queryHelper.first({
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const result = await queryHelper.first({
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text: "SELECT * FROM posts WHERE id = $1",
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text: "SELECT * FROM posts WHERE id = $1",
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values: [postId],
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values: [postId],
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@ -112,7 +114,7 @@ namespace dataaccess {
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* @param authorId
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* @param authorId
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* @param type
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* @param type
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*/
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*/
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export async function createPost(content: string, authorId: number, type?: string) {
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export async function createPost(content: string, authorId: number, type?: string): Promise<Post> {
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const result = await queryHelper.first({
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const result = await queryHelper.first({
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text: "INSERT INTO posts (content, author, type) VALUES ($1, $2, $3) RETURNING *",
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text: "INSERT INTO posts (content, author, type) VALUES ($1, $2, $3) RETURNING *",
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values: [content, authorId, type],
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values: [content, authorId, type],
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@ -124,7 +126,7 @@ namespace dataaccess {
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* Deletes a post
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* Deletes a post
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* @param postId
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* @param postId
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*/
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*/
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export async function deletePost(postId: number) {
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export async function deletePost(postId: number): Promise<boolean> {
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const result = await queryHelper.first({
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const result = await queryHelper.first({
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text: "DELETE FROM posts WHERE posts.id = $1",
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text: "DELETE FROM posts WHERE posts.id = $1",
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values: [postId],
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values: [postId],
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@ -136,7 +138,7 @@ namespace dataaccess {
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* Creates a chatroom containing two users
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* Creates a chatroom containing two users
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* @param members
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* @param members
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*/
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*/
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export async function createChat(...members: number[]) {
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export async function createChat(...members: number[]): Promise<Chatroom> {
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const idResult = await queryHelper.first({
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const idResult = await queryHelper.first({
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text: "INSERT INTO chats (id) values (nextval('chats_id_seq'::regclass)) RETURNING *;",
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text: "INSERT INTO chats (id) values (nextval('chats_id_seq'::regclass)) RETURNING *;",
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});
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});
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@ -161,6 +163,25 @@ namespace dataaccess {
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return new Chatroom(id);
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return new Chatroom(id);
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}
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}
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/**
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* Sends a message into a chat.
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* @param authorId
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* @param chatId
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* @param content
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*/
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export async function sendChatMessage(authorId: number, chatId: number, content: string) {
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const chat = new Chatroom(chatId);
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if ((await chat.exists())) {
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const result = await queryHelper.first({
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text: "INSERT INTO chat_messages (chat, author, content, created_at) values ($1, $2, $3) RETURNING *",
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values: [chatId, authorId, content],
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});
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return new ChatMessage(new User(result.author), chat, result.timestamp, result.content);
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} else {
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throw new ChatNotFoundError(chatId);
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}
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}
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/**
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/**
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* Enum representing the types of votes that can be performed on a post.
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* Enum representing the types of votes that can be performed on a post.
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*/
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*/
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Trivernis
5 years ago