feat(auth): add sign up and sign in functions with credentials

src/app/actions/auth.ts

@@ -0,0 +1,26 @@
+"use server";
+
+import bcrypt from "bcrypt";
+import prisma from "@/lib/prisma";
+import { signIn } from "@/lib/auth";
+import { authSchema } from "@/lib/zod";
+import { redirect } from "next/navigation";
+
+export async function signInWithCredentials(formData: { email: string; password: string }) {
+  await signIn("credentials", formData);
+}
+
+export async function signUpWithCredentials(formData: { email: string; password: string }) {
+  const validatedData = await authSchema.parseAsync(formData);
+  const saltRounds = 10;
+  const pwHash = await bcrypt.hash(validatedData.password, saltRounds);
+
+  await prisma.user.create({
+    data: {
+      email: validatedData.email,
+      password: pwHash,
+    },
+  });
+
+  redirect("/sign-in");
+}