パスワードハッシュ化, 戻り値をトークンに, login実装

src/services/authService.ts

@@ -1,20 +1,38 @@
 import { Prisma, PrismaClient, User } from "@prisma/client";
 import prisma from "@src/prisma";
+import bcrypt from "bcrypt";
+import { issueTokenByUserId } from "@src/utils/tokenUtils";
 
+async function registUser(email: string, password: string): Promise<String> {
     
-function registUser(email: string, password: string): Promise<String> {
+    const hashedPassword = bcrypt.hashSync(password, 10);
 
     const registUser = prisma.user.create({ // TODO: バリデーション, ハッシュ化, その他
         data: {
             email,
-            password,
+            password: hashedPassword,
             name: email,
         }
     });
 
-    return registUser.then((user) => {
-        return user.id
+    const user = await registUser;
+    return issueTokenByUserId(user.id);
+}
+
+async function loginUser(email: string, password: string): Promise<String | null> {
+    const user = await prisma.user.findUnique({
+        where: {
+            email: email
+        }
     });
+    if(!user) {
+        return null;
+    }
+    if(bcrypt.compareSync(password, user.password)) {
+        return issueTokenByUserId(user.id);
+    } else {
+        return null;
+    }
 }