#4 implemented postgres events

src/service/db/index.ts

@@ -1,6 +1,6 @@
 import { VkEvent } from "../vk/types";
-import { StoredEvent, StoredLike } from "./types";
 import { Like } from "./postgres/entities/Like";
+import { Event } from "./postgres/entities/Event";
 
 export interface Storage {
   getEvent(
@@ -8,17 +8,13 @@ export interface Storage {
     id: number,
     groupId: number,
     channel: string
-  ): Promise<StoredEvent>;
+  ): Promise<Event>;
 
-  createEvent(event: Partial<StoredEvent>): Promise<StoredEvent>;
+  createEvent(event: Partial<Event>): Promise<Event>;
 
-  createOrUpdateLike(like: Partial<StoredLike>): Promise<Like>;
+  createOrUpdateLike(like: Partial<Like>): Promise<Like>;
 
-  getLikesFor(channel: string, messageId: number): Promise<StoredLike[]>;
+  getLikesFor(channel: string, messageId: number): Promise<Like[]>;
 
-  getLikeBy(
-    channel: string,
-    messageId: number,
-    author: number
-  ): Promise<StoredLike>;
+  getLikeBy(channel: string, messageId: number, author: number): Promise<Like>;
 }

src/service/db/postgres/index.ts

@@ -1,15 +1,19 @@
 import { Storage } from "../index";
 import { VkEvent } from "../../vk/types";
-import { StoredEvent } from "../types";
 import { PostgresConfig } from "./types";
-import { Connection, createConnection } from "typeorm";
+import { Connection, createConnection, Repository } from "typeorm";
 import logger from "../../logger";
 import path from "path";
+import { Like } from "./entities/Like";
+import { Event } from "./entities/Event";
 
 const entities = [path.join(__dirname, "./entities/*")];
 
 export class PostgresDB implements Storage {
   private connection: Connection;
+  private events: Repository<Event>;
+  private likes: Repository<Like>;
+
   constructor(private config: PostgresConfig) {}
 
   connect = async () => {
@@ -23,6 +27,9 @@ export class PostgresDB implements Storage {
 
     await this.connection.synchronize();
 
+    this.events = this.connection.getRepository(Event);
+    this.likes = this.connection.getRepository(Like);
+
     logger.info(`db connected to ${this.config.uri}`);
   };
 
@@ -32,28 +39,50 @@ export class PostgresDB implements Storage {
     groupId: number,
     channel: string
   ) => {
-    return {
-      type,
-      id,
-      groupId,
-      channel,
-      tgMessageId: 0,
-      createdAt: new Date(),
-      updatedAt: new Date(),
-    };
+    return await this.events.findOne({ type, id, groupId, channel });
   };
 
-  createEvent = async (event: StoredEvent) => event;
+  createEvent = async (event) => {
+    const result = this.events.create({
+      ...event,
+    });
 
-  getLikesFor = async (channel: string, messageId: number) => [];
+    return result[0];
+  };
 
-  getLikeBy = async (channel: string, messageId: number, author: number) => ({
-    id: 0,
+  getLikesFor = async (channel, messageId) => {
+    return await this.likes.find({
+      where: { channel, messageId },
+    });
+  };
+
+  getLikeBy = async (channel, messageId, author) => {
+    return this.likes.findOne({
       channel,
       messageId,
       author,
-    text: "",
-    createdAt: new Date(),
-    updatedAt: new Date(),
     });
+  };
+
+  createOrUpdateLike = async ({
+    channel,
+    author,
+    text,
+    messageId,
+  }: Partial<Like>) => {
+    const like = await this.likes.findOne({ channel, author, messageId });
+
+    if (like) {
+      like.text = text;
+      return await this.likes.save(like);
+    } else {
+      const created = await this.likes.create({
+        channel,
+        author,
+        text,
+        messageId,
+      });
+      return created[0];
+    }
+  };
 }

src/service/db/types.ts

@@ -1,21 +0,0 @@
-import { VkEvent } from "../vk/types";
-
-export interface StoredEvent {
-  type: VkEvent;
-  id: number;
-  groupId: number;
-  channel: string;
-  tgMessageId: number;
-  createdAt: Date;
-  updatedAt: Date;
-}
-
-export interface StoredLike {
-  id: number;
-  messageId: number;
-  channel: string;
-  text: string;
-  author: number;
-  createdAt: Date;
-  updatedAt: Date;
-}