added users and groups

src/services/group.js

@@ -0,0 +1,34 @@
+import db from '../db.js';
+import status from '../utils/status.js';
+
+class GroupService {
+    async create(name, creatorId) {
+        let res = await db.query("INSERT INTO groups (name, admin_id) VALUES ($1, $2) RETURNING ID", [name, creatorId]).catch (e => {
+            if (e.code == 23505) { // already exists
+                return status.duplicate;
+            }
+        })
+
+        return res.rows[0];
+    }
+
+    async getById(id) {
+        let res = (await db.query("SELECT * FROM groups WHERE id = $1", [id]))
+        if (res.rowCount == 0) return status.not_found;
+        return res.rows[0];
+    }
+
+    async getAdminId(id) {
+        return (await db.query("SELECT admin_id FROM groups WHERE ID = $1", [id])).rows[0].admin_id
+    }
+
+    async updatePassword(id, password) {
+        return (await db.query("UPDATE groups SET password = $1 WHERE id = $2", [password, id]));
+    }
+
+    async getPassword(id) {
+        return (await db.query("SELECT password FROM groups WHERE id = $1", [id])).rows[0].password;
+    }
+};
+
+export default new GroupService();

src/services/user.js

@@ -0,0 +1,36 @@
+import db from '../db.js'
+import statuses from '../utils/status.js';
+import bcrypt from 'bcrypt';
+
+class UserService {
+    async create (username, password) {
+        await db.query("INSERT INTO users (username, password) VALUES ($1, $2)", [username, bcrypt.hashSync(password, 12)]).catch (e => {
+            if (e.code == 23505) { // already exists
+                return statuses.duplicate
+            }
+        })
+        return statuses.ok
+    }
+
+    async getByUsername(username) {
+        let user = (await db.query("SELECT * FROM Users WHERE username = $1", [username])).rows
+        if (user == undefined) return statuses.not_found
+        return (user[0]);
+    }
+
+    async getAll() {
+        return (await db.query("SELECT * FROM Users")).rows;
+    }
+
+    async isInGroup(userId, groupId) {
+        return (await db.query("SELECT * FROM Users WHERE ID = $1 AND $2 = ANY(groups)", [userId, groupId])).rowCount > 0;
+    }
+
+    async joinGroup(userId, groupId) {
+        if (await (this.isInGroup(userId, groupId))) return statuses.duplicate;
+        await db.query("UPDATE Users SET groups = array_append(groups, $1::integer) WHERE ID = $2", [groupId, userId]);
+        return statuses.ok;
+    }
+}
+
+export default new UserService();