feat: add auth

app/(auth)/forgot-password/page.tsx

@@ -0,0 +1,70 @@
+"use client";
+
+import { useState } from "react";
+import { AuthCard, AuthFooterLink } from "@/components/auth/auth-card";
+import { auth, AuthError } from "@/lib/auth";
+import { Button } from "@/components/ui/button";
+import { Input } from "@/components/ui/input";
+import { Label } from "@/components/ui/label";
+
+export default function ForgotPasswordPage() {
+  const [email, setEmail] = useState("");
+  const [submitted, setSubmitted] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  const [submitting, setSubmitting] = useState(false);
+
+  async function onSubmit(e: React.SyntheticEvent) {
+    e.preventDefault();
+    setError(null);
+    setSubmitting(true);
+    try {
+      await auth.forgotPassword(email);
+      setSubmitted(true);
+    } catch (err) {
+      setError(err instanceof AuthError ? err.message : "Something went wrong.");
+    } finally {
+      setSubmitting(false);
+    }
+  }
+
+  if (submitted) {
+    return (
+      <AuthCard
+        title="Check your inbox"
+        description="If an account exists for that email, we've sent a reset link. It will expire in 1 hour."
+        footer={<AuthFooterLink prefix="Back to" href="/login" label="log in" />}
+      >
+        <p className="text-sm text-muted-foreground">
+          Didn&apos;t get an email? Check your spam folder or try again in a minute.
+        </p>
+      </AuthCard>
+    );
+  }
+
+  return (
+    <AuthCard
+      title="Reset your password"
+      description="Enter your email and we'll send you a reset link."
+      footer={<AuthFooterLink prefix="Remembered it?" href="/login" label="Log in" />}
+    >
+      <form onSubmit={onSubmit} className="space-y-6">
+        <div className="space-y-1.5">
+          <Label htmlFor="email">Email</Label>
+          <Input
+            id="email"
+            type="email"
+            autoComplete="email"
+            required
+            value={email}
+            onChange={(e) => setEmail(e.target.value)}
+          />
+        </div>
+        <br />
+        {error ? <p className="text-sm text-destructive">{error}</p> : null}
+        <Button type="submit" disabled={submitting} className="w-full h-11 text-base">
+          {submitting ? "Sending…" : "Send reset link"}
+        </Button>
+      </form>
+    </AuthCard>
+  );
+}

app/(auth)/layout.tsx

@@ -0,0 +1,16 @@
+/**
+ * Shared layout for the auth pages (login, signup, forgot-password,
+ * reset-password). Provides the centered card frame so each page only
+ * has to render its own form.
+ */
+export default function AuthLayout({
+  children,
+}: {
+  children: React.ReactNode;
+}) {
+  return (
+    <main className="flex items-center justify-center px-4 py-12 min-h-[90vh]">
+      <div className="w-full max-w-md">{children}</div>
+    </main>
+  );
+}

app/(auth)/login/page.tsx

@@ -0,0 +1,77 @@
+"use client";
+
+import { useState } from "react";
+import { useRouter, useSearchParams } from "next/navigation";
+import { AuthCard, AuthFooterLink } from "@/components/auth/auth-card";
+import { useAuth } from "@/components/auth/auth-provider";
+import { AuthError } from "@/lib/auth";
+import { Button } from "@/components/ui/button";
+import { Input } from "@/components/ui/input";
+import { Label } from "@/components/ui/label";
+
+export default function LoginPage() {
+  const router = useRouter();
+  const params = useSearchParams();
+  const { logIn } = useAuth();
+  const [email, setEmail] = useState("");
+  const [password, setPassword] = useState("");
+  const [error, setError] = useState<string | null>(null);
+  const [submitting, setSubmitting] = useState(false);
+
+  async function onSubmit(e: React.SyntheticEvent) {
+    e.preventDefault();
+    setError(null);
+    setSubmitting(true);
+    try {
+      await logIn(email, password);
+      router.push(params.get("next") ?? "/profile");
+      router.refresh();
+    } catch (err) {
+      setError(err instanceof AuthError ? err.message : "Login failed.");
+      setSubmitting(false);
+    }
+  }
+
+  return (
+    <AuthCard
+      title="Welcome back"
+      description="Log in to access your bookmarks, notes, and collections."
+      footer={
+        <div className="space-y-1">
+          <AuthFooterLink prefix="No account?" href="/signup" label="Create one" />
+          <AuthFooterLink prefix="Forgot your password?" href="/forgot-password" label="Reset it" />
+        </div>
+      }
+    >
+      <form onSubmit={onSubmit} className="space-y-6">
+        <div className="space-y-1.5">
+          <Label htmlFor="email">Email</Label>
+          <Input
+            id="email"
+            type="email"
+            autoComplete="email"
+            required
+            value={email}
+            onChange={(e) => setEmail(e.target.value)}
+          />
+        </div>
+        <div className="space-y-1.5">
+          <Label htmlFor="password">Password</Label>
+          <Input
+            id="password"
+            type="password"
+            autoComplete="current-password"
+            required
+            value={password}
+            onChange={(e) => setPassword(e.target.value)}
+          />
+        </div>
+        <br />
+        {error ? <p className="text-sm text-destructive">{error}</p> : null}
+        <Button type="submit" disabled={submitting} className="w-full h-11 text-base">
+          {submitting ? "Logging in…" : "Log in"}
+        </Button>
+      </form>
+    </AuthCard>
+  );
+}

app/(auth)/reset-password/page.tsx

@@ -0,0 +1,108 @@
+"use client";
+
+import { Suspense, useState } from "react";
+import { useSearchParams, useRouter } from "next/navigation";
+import { AuthCard, AuthFooterLink } from "@/components/auth/auth-card";
+import { auth, AuthError } from "@/lib/auth";
+import { Button } from "@/components/ui/button";
+import { Input } from "@/components/ui/input";
+import { Label } from "@/components/ui/label";
+
+function ResetPasswordForm() {
+  const params = useSearchParams();
+  const router = useRouter();
+  const token = params.get("token") ?? "";
+
+  const [password, setPassword] = useState("");
+  const [confirm, setConfirm] = useState("");
+  const [error, setError] = useState<string | null>(null);
+  const [submitting, setSubmitting] = useState(false);
+  const [done, setDone] = useState(false);
+
+  if (!token) {
+    return (
+      <AuthCard title="Invalid reset link" description="The link is missing a token. Please request a new one.">
+        <AuthFooterLink prefix="Need a new link?" href="/forgot-password" label="Request one" />
+      </AuthCard>
+    );
+  }
+
+  async function onSubmit(e: React.SyntheticEvent) {
+    e.preventDefault();
+    setError(null);
+    if (password !== confirm) {
+      setError("Passwords do not match.");
+      return;
+    }
+    setSubmitting(true);
+    try {
+      await auth.resetPassword(token, password);
+      setDone(true);
+      setTimeout(() => router.push("/login"), 1500);
+    } catch (err) {
+      setError(err instanceof AuthError ? err.message : "Reset failed.");
+    } finally {
+      setSubmitting(false);
+    }
+  }
+
+  if (done) {
+    return (
+      <AuthCard
+        title="Password updated"
+        description="Redirecting you to the login page…"
+      >
+        <AuthFooterLink prefix="Take me there now —" href="/login" label="Log in" />
+      </AuthCard>
+    );
+  }
+
+  return (
+    <AuthCard
+      title="Set a new password"
+      description="Choose a strong password you haven't used before."
+    >
+      <form onSubmit={onSubmit} className="space-y-6">
+        <div className="space-y-1.5">
+          <Label htmlFor="password">New password</Label>
+          <Input
+            id="password"
+            type="password"
+            autoComplete="new-password"
+            minLength={8}
+            required
+            value={password}
+            onChange={(e) => setPassword(e.target.value)}
+          />
+        </div>
+
+        <div className="space-y-1.5">
+          <Label htmlFor="confirm">Confirm password</Label>
+          <Input
+            id="confirm"
+            type="password"
+            autoComplete="new-password"
+            minLength={8}
+            required
+            value={confirm}
+            onChange={(e) => setConfirm(e.target.value)}
+          />
+        </div>
+        <br />
+        {error ? <p className="text-sm text-destructive">{error}</p> : null}
+        <Button type="submit" disabled={submitting} className="w-full h-11 text-base">
+          {submitting ? "Updating…" : "Update password"}
+        </Button>
+      </form>
+    </AuthCard>
+  );
+}
+
+export default function ResetPasswordPage() {
+  // useSearchParams must be inside Suspense for Next.js streaming.
+  return (
+    <Suspense fallback={null}>
+      <ResetPasswordForm />
+    </Suspense>
+  );
+}

app/(auth)/signup/page.tsx

@@ -0,0 +1,89 @@
+"use client";
+
+import { useState } from "react";
+import { useRouter } from "next/navigation";
+import { AuthCard, AuthFooterLink } from "@/components/auth/auth-card";
+import { useAuth } from "@/components/auth/auth-provider";
+import { AuthError } from "@/lib/auth";
+import { Button } from "@/components/ui/button";
+import { Input } from "@/components/ui/input";
+import { Label } from "@/components/ui/label";
+
+export default function SignUpPage() {
+  const router = useRouter();
+  const { signUp } = useAuth();
+  const [name, setName] = useState("");
+  const [email, setEmail] = useState("");
+  const [password, setPassword] = useState("");
+  const [error, setError] = useState<string | null>(null);
+  const [submitting, setSubmitting] = useState(false);
+
+  async function onSubmit(e: React.SyntheticEvent) {
+    e.preventDefault();
+    setError(null);
+    setSubmitting(true);
+    try {
+      await signUp(email, password, name);
+      router.push("/profile");
+      router.refresh();
+    } catch (err) {
+      setError(err instanceof AuthError ? err.message : "Sign-up failed.");
+      setSubmitting(false);
+    }
+  }
+
+  return (
+    <AuthCard
+      title="Create your account"
+      description="Save bookmarks, build collections, and follow Śrīla Prabhupāda's words across devices."
+      footer={
+        <AuthFooterLink prefix="Already registered?" href="/login" label="Log in" />
+      }
+    >
+      <form onSubmit={onSubmit} className="space-y-6">
+        <div className="space-y-1.5">
+          <Label htmlFor="name">Name</Label>
+          <Input
+            id="name"
+            type="text"
+            autoComplete="name"
+            required
+            value={name}
+            onChange={(e) => setName(e.target.value)}
+          />
+        </div>
+
+        <div className="space-y-1.5">
+          <Label htmlFor="email">Email</Label>
+          <Input
+            id="email"
+            type="email"
+            autoComplete="email"
+            required
+            value={email}
+            onChange={(e) => setEmail(e.target.value)}
+          />
+        </div>
+
+        <div className="space-y-1.5">
+          <Label htmlFor="password">Password</Label>
+          <Input
+            id="password"
+            type="password"
+            autoComplete="new-password"
+            minLength={8}
+            required
+            value={password}
+            onChange={(e) => setPassword(e.target.value)}
+          />
+          <p className="text-xs text-muted-foreground">At least 8 characters.</p>
+        </div>
+        <br />
+        {error ? <p className="text-sm text-destructive">{error}</p> : null}
+        <Button type="submit" disabled={submitting} className="w-full h-11 text-base">
+          {submitting ? "Creating account…" : "Sign up"}
+        </Button>
+      </form>
+    </AuthCard>
+  );
+}