"use client";

import { useState } from "react";
import { Button } from "@/components/ui/button";
import { Card, CardContent } from "@/components/ui/card";
import Link from "next/link";
import localFont from "next/font/local";
import { useUser, useClerk } from "@clerk/nextjs";
import * as Clerk from "@clerk/elements/common";
import * as SignIn from "@clerk/elements/sign-in";
import * as SignUp from "@clerk/elements/sign-up";

const makeSans = localFont({
    src: "../../../public/font/makesans.ttf",
})

export default function AuthPage() {
  const { isSignedIn, user } = useUser();
  const { signOut } = useClerk();
  const [showSignIn, setShowSignIn] = useState(false);
  const [showSignUp, setShowSignUp] = useState(false);
  const inputClassName =
    "bg-input/20 dark:bg-input/30 border-input focus-visible:border-ring focus-visible:ring-ring/30 aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive dark:aria-invalid:border-destructive/50 h-7 rounded-md border px-2 py-0.5 text-sm transition-colors file:h-6 file:text-xs/relaxed file:font-medium focus-visible:ring-[2px] aria-invalid:ring-[2px] md:text-xs/relaxed file:text-foreground placeholder:text-muted-foreground w-full min-w-0 outline-none file:inline-flex file:border-0 file:bg-transparent disabled:pointer-events-none disabled:cursor-not-allowed disabled:opacity-50";

  if (showSignIn) {
    return (
      <main>
        <div className="font-mona min-w-screen gap-2 min-h-screen flex flex-col items-center p-2 justify-center">
          <div className="w-full max-w-md">
            <div className="text-center mb-6">
              <Link href="/auth" className="inline-flex items-center text-sm text-muted-foreground hover:text-foreground mb-4">
                ← Back
              </Link>
              <h1 className={makeSans.className + " text-2xl text-primary font-extrabold lowercase"}>
                sign in
              </h1>
            </div>
            <SignIn.Root routing="virtual">
              <Card>
                <CardContent className="p-6 space-y-4">
                  <SignIn.Step name="start" className="space-y-4">
                <Clerk.GlobalError className="text-sm text-destructive" />
                <Clerk.Field name="identifier" className="space-y-1">
                  <Clerk.Label className="text-sm text-muted-foreground">Email</Clerk.Label>
                  <Clerk.Input className={inputClassName} />
                  <Clerk.FieldError className="text-xs text-destructive" />
                </Clerk.Field>
                <SignIn.Action submit asChild>
                  <Button className="w-full">Continue</Button>
                </SignIn.Action>
                <div className="text-center text-xs text-muted-foreground">
                  Don&apos;t have an account?{" "}
                  <button
                    type="button"
                    className="text-primary hover:underline"
                    onClick={() => {
                      setShowSignUp(true);
                      setShowSignIn(false);
                    }}
                  >
                    Create an account
                  </button>
                </div>
                  </SignIn.Step>

                  <SignIn.Step name="verifications" className="space-y-4">
                <Clerk.GlobalError className="text-sm text-destructive" />
                <SignIn.Strategy name="email_code" className="space-y-4">
                  <p className="text-sm text-muted-foreground text-center">
                    Enter the code sent to <SignIn.SafeIdentifier />
                  </p>
                  <Clerk.Field name="code" className="space-y-1">
                    <Clerk.Label className="text-sm text-muted-foreground">Verification code</Clerk.Label>
                    <Clerk.Input className={inputClassName} />
                    <Clerk.FieldError className="text-xs text-destructive" />
                  </Clerk.Field>
                  <SignIn.Action submit asChild>
                    <Button className="w-full">Verify</Button>
                  </SignIn.Action>
                </SignIn.Strategy>

                <SignIn.Strategy name="password" className="space-y-4">
                  <Clerk.Field name="password" className="space-y-1">
                    <Clerk.Label className="text-sm text-muted-foreground">Password</Clerk.Label>
                    <Clerk.Input className={inputClassName} type="password" />
                    <Clerk.FieldError className="text-xs text-destructive" />
                  </Clerk.Field>
                  <SignIn.Action submit asChild>
                    <Button className="w-full">Continue</Button>
                  </SignIn.Action>
                  <SignIn.Action navigate="forgot-password" asChild>
                    <Button variant="outline" className="w-full">Forgot password?</Button>
                  </SignIn.Action>
                </SignIn.Strategy>
                  </SignIn.Step>

                  <SignIn.Step name="forgot-password" className="space-y-4">
                <Clerk.GlobalError className="text-sm text-destructive" />
                <p className="text-sm text-muted-foreground text-center">
                  We&apos;ll email you a code to reset your password.
                </p>
                <SignIn.SupportedStrategy name="reset_password_email_code" asChild>
                  <Button className="w-full">Send reset code</Button>
                </SignIn.SupportedStrategy>
                <SignIn.Action navigate="start" asChild>
                  <Button variant="outline" className="w-full">Back to sign in</Button>
                </SignIn.Action>
                  </SignIn.Step>

                  <SignIn.Step name="reset-password" className="space-y-4">
                <Clerk.GlobalError className="text-sm text-destructive" />
                <Clerk.Field name="code" className="space-y-1">
                  <Clerk.Label className="text-sm text-muted-foreground">Reset code</Clerk.Label>
                  <Clerk.Input className={inputClassName} />
                  <Clerk.FieldError className="text-xs text-destructive" />
                </Clerk.Field>
                <Clerk.Field name="password" className="space-y-1">
                  <Clerk.Label className="text-sm text-muted-foreground">New password</Clerk.Label>
                  <Clerk.Input className={inputClassName} type="password" />
                  <Clerk.FieldError className="text-xs text-destructive" />
                </Clerk.Field>
                <Clerk.Field name="confirmPassword" className="space-y-1">
                  <Clerk.Label className="text-sm text-muted-foreground">Confirm password</Clerk.Label>
                  <Clerk.Input className={inputClassName} type="password" />
                  <Clerk.FieldError className="text-xs text-destructive" />
                </Clerk.Field>
                <SignIn.Action submit asChild>
                  <Button className="w-full">Reset password</Button>
                </SignIn.Action>
                  </SignIn.Step>
                </CardContent>
              </Card>
            </SignIn.Root>
          </div>
        </div>
      </main>
    );
  }

  if (showSignUp) {
    return (
      <main>
        <div className="font-mona min-w-screen gap-2 min-h-screen flex flex-col items-center p-2 justify-center">
          <div className="w-full max-w-md">
            <div className="text-center mb-6">
              <Link href="/auth" className="inline-flex items-center text-sm text-muted-foreground hover:text-foreground mb-4">
                ← Back
              </Link>
              <h1 className={makeSans.className + " text-2xl text-primary font-extrabold lowercase"}>
                create account
              </h1>
            </div>
            <SignUp.Root routing="virtual">
              <Card>
                <CardContent className="p-6 space-y-4">
                  <SignUp.Step name="start" className="space-y-4">
                <Clerk.GlobalError className="text-sm text-destructive" />
                <Clerk.Field name="emailAddress" className="space-y-1">
                  <Clerk.Label className="text-sm text-muted-foreground">Email</Clerk.Label>
                  <Clerk.Input className={inputClassName} />
                  <Clerk.FieldError className="text-xs text-destructive" />
                </Clerk.Field>
                <Clerk.Field name="password" className="space-y-1">
                  <Clerk.Label className="text-sm text-muted-foreground">Password</Clerk.Label>
                  <Clerk.Input className={inputClassName} type="password" />
                  <Clerk.FieldError className="text-xs text-destructive" />
                </Clerk.Field>
                <SignUp.Captcha />
                <SignUp.Action submit asChild>
                  <Button className="w-full">Create account</Button>
                </SignUp.Action>
                <div className="text-center text-xs text-muted-foreground">
                  Already have an account?{" "}
                  <button
                    type="button"
                    className="text-primary hover:underline"
                    onClick={() => {
                      setShowSignIn(true);
                      setShowSignUp(false);
                    }}
                  >
                    Sign in
                  </button>
                </div>
                  </SignUp.Step>

                  <SignUp.Step name="verifications" className="space-y-4">
                <Clerk.GlobalError className="text-sm text-destructive" />
                <SignUp.Strategy name="email_code" className="space-y-4">
                  <p className="text-sm text-muted-foreground text-center">
                    Enter the code sent to your email.
                  </p>
                  <Clerk.Field name="code" className="space-y-1">
                    <Clerk.Label className="text-sm text-muted-foreground">Verification code</Clerk.Label>
                    <Clerk.Input className={inputClassName} />
                    <Clerk.FieldError className="text-xs text-destructive" />
                  </Clerk.Field>
                  <SignUp.Action submit asChild>
                    <Button className="w-full">Verify email</Button>
                  </SignUp.Action>
                </SignUp.Strategy>
                  </SignUp.Step>

                  <SignUp.Step name="continue" className="space-y-4">
                <Clerk.GlobalError className="text-sm text-destructive" />
                <p className="text-sm text-muted-foreground text-center">
                  Finish setting up your account.
                </p>
                <Clerk.Field name="username" className="space-y-1">
                  <Clerk.Label className="text-sm text-muted-foreground">Username</Clerk.Label>
                  <Clerk.Input className={inputClassName} />
                  <Clerk.FieldError className="text-xs text-destructive" />
                </Clerk.Field>
                <Clerk.Field name="firstName" className="space-y-1">
                  <Clerk.Label className="text-sm text-muted-foreground">First name</Clerk.Label>
                  <Clerk.Input className={inputClassName} />
                  <Clerk.FieldError className="text-xs text-destructive" />
                </Clerk.Field>
                <Clerk.Field name="lastName" className="space-y-1">
                  <Clerk.Label className="text-sm text-muted-foreground">Last name</Clerk.Label>
                  <Clerk.Input className={inputClassName} />
                  <Clerk.FieldError className="text-xs text-destructive" />
                </Clerk.Field>
                <SignUp.Action submit asChild>
                  <Button className="w-full">Continue</Button>
                </SignUp.Action>
                  </SignUp.Step>
                </CardContent>
              </Card>
            </SignUp.Root>
          </div>
        </div>
      </main>
    );
  }

  return (
    <main>
      <div className="font-mona min-w-screen gap-2 min-h-screen flex flex-col items-center p-2 justify-center">
        <span className="text-muted-foreground font-medium">Account for</span>
        <h1 className={makeSans.className + " text-2xl text-primary font-extrabold lowercase"}>
          FRG Network
        </h1>
        <p className="text-muted-foreground mb-8">Create your FRG account to access all features</p>
        
        {isSignedIn ? (
          <div className="w-full max-w-md space-y-6">
            <Card>
              <CardContent className="p-6">
                <h2 className="text-lg font-medium mb-4 lowercase">welcome back</h2>
                <p className="text-sm text-muted-foreground mb-4">
                  Welcome back, <span className="font-medium">{user?.firstName || user?.emailAddresses[0]?.emailAddress}</span>!
                </p>
                <div className="space-y-3">
                  <Button variant="outline" onClick={() => signOut()} className="w-full">
                    Sign out
                  </Button>
                </div>
              </CardContent>
            </Card>
          </div>
        ) : (
          <div className="w-full max-w-md space-y-6">
            <Card>
              <CardContent className="p-6">
                <h2 className="text-lg font-medium mb-4 lowercase">get started</h2>
                <div className="space-y-3">
                  <Button onClick={() => setShowSignIn(true)} className="w-full">
                    Sign in
                  </Button>
                  <Button variant="outline" onClick={() => setShowSignUp(true)} className="w-full">
                    Create account
                  </Button>
                </div>
              </CardContent>
            </Card>

            <Link href="/" className="text-primary hover:underline">Looking for server access?</Link>
          </div>
        )}
      </div>
    </main>
  );
}