Add functional code

src/database.ts

@@ -0,0 +1,21 @@
+import { MSG_ID_FILE, DB_NAME } from "./config";
+import * as fs from "fs";
+
+export const LOAD_MSG_ID = (): string => {
+	return fs.readFileSync(`./${MSG_ID_FILE}`, `utf8`)
+};
+
+
+export const WRITE_MSG_ID = (new_id: string) => {
+	return fs.writeFileSync(`./${MSG_ID_FILE}`, new_id)
+};
+
+
+export const LOAD_USED_QUOTES = (): string[] => {
+	return JSON.parse(fs.readFileSync(`./${DB_NAME}`, `utf`));
+};
+
+
+export const WRITE_USED_QUOTES = (data: string[]) => {
+	fs.writeFileSync(`${DB_NAME}`, JSON.stringify(data));
+}