feat: Filemagedon

Signed-off-by: Avior <git@avior.me>

src/models/Clients/PostgresClient.ts

@@ -0,0 +1,71 @@
+import { wait } from 'libs/AsyncUtils'
+import { getEnv, requireEnv } from 'libs/Env'
+import pg from 'pg'
+import Client from '.'
+const Postgres = pg.Client
+
+// biome-ignore lint/complexity/noStaticOnlyClass: <explanation>
+export default class PostgresClient extends Client {
+	private static instance: PostgresClient = new PostgresClient()
+	private client?: pg.Client | null
+	public override async getVersion(): Promise<number> {
+		try {
+			const res = await this.execute(`SELECT value FROM settings WHERE id = 'db_version'`)
+
+			const value = res[0]?.value
+			if (!value) {
+				return -1
+			}
+			return Number.parseInt(value)
+		} catch (e) {
+			// table does not exists
+			console.log('Settings table does not exists', e)
+			return -1
+		}
+	}
+	public override async setVersion(version: number): Promise<void> {
+		await this.execute(`UPDATE settings SET value = $1 WHERE id = 'db_version';`, [version.toString()])
+	}
+	public override async execute(query: string, params?: Array<unknown> | object, ...options: Array<any>): Promise<Array<Record<string, unknown>>> {
+		if (!this.client || !await this.isReady()) {
+			throw new Error('not connected')
+		}
+		const res = await this.client.query<Record<string, unknown>>(query, params)
+		return res.rows
+	}
+	public override async connect(): Promise<void> {
+		if (this.client) {
+			return
+		}
+		this.client = new Postgres({
+			host: requireEnv('POSTGRES_HOST'),
+			user: requireEnv('POSTGRES_USERNAME'),
+			password: requireEnv('POSTGRES_PASSWORD'),
+			port: parseInt(getEnv('POSTGRES_PORT', '5432')),
+			database: requireEnv('POSTGRES_DATABASE', 'projectmanager'),
+			// debug(connection, query, parameters, paramTypes) {
+			// 		console.log(`${query}, ${parameters}`);
+			// },
+		})
+		.on('end', () => {
+			this.client = null
+		})
+		try {
+			await this.client.connect()
+		} catch (e) {
+			this.client = null
+			console.error(e)
+			throw new Error('Error connecting to Postgres')
+		}
+	}
+	public override async isReady(): Promise<boolean> {
+		return !!this.client
+	}
+
+	/**
+	 * get the connexion to cassandra, it will try until it succedeed
+	 */
+	public static async get() {
+		return PostgresClient.instance
+	}
+}