signup and loginbasics

apps/web/pages/api/auth/[...nextauth].ts

@@ -1,11 +1,70 @@
 import NextAuth from "next-auth";
 import GitHubProvider from "next-auth/providers/github";
+import CredentialsProvider from "next-auth/providers/credentials";
+import { ErrorCode } from "@documenso/lib/auth";
+import prisma from "@documenso/prisma";
+import { verifyPassword } from "@documenso/lib/auth";
 
 export default NextAuth({
   providers: [
-    GitHubProvider({
-      clientId: "df804870b0d11b0779cf",
-      clientSecret: "7ef4bbc0957e48e4e6e59c5b5879b3d75d90acc5",
+    CredentialsProvider({
+      id: "crediantials",
+      name: "Documenso.com Login",
+      type: "credentials",
+      credentials: {
+        email: {
+          label: "Email Address",
+          type: "email",
+          placeholder: "john.doe@example.com",
+        },
+        password: {
+          label: "Password",
+          type: "password",
+          placeholder:
+            "Select a password. Here is some inspiration: https://xkcd.com/936/",
+        },
+      },
+      async authorize(credentials: any) {
+        if (!credentials) {
+          console.error("Credential missing in authorize()");
+          throw new Error(ErrorCode.InternalServerError);
+        }
+
+        const user = await prisma.user.findUnique({
+          where: {
+            email: credentials.email.toLowerCase(),
+          },
+          select: {
+            id: true,
+            email: true,
+            password: true,
+            name: true,
+          },
+        });
+
+        if (!user) {
+          throw new Error(ErrorCode.UserNotFound);
+        }
+
+        if (!user.password) {
+          throw new Error(ErrorCode.UserMissingPassword);
+        }
+
+        const isCorrectPassword = await verifyPassword(
+          credentials.password,
+          user.password
+        );
+
+        if (!isCorrectPassword) {
+          throw new Error(ErrorCode.IncorrectPassword);
+        }
+
+        return {
+          id: user.id.toString(),
+          email: user.email,
+          name: user.name,
+        };
+      },
     }),
   ],
 });