"use client";

import { useState } from "react";
import { useRouter } from "next/navigation";
import { useAuth } from "../auth-context";

export default function LoginPage() {
  const [email, setEmail] = useState("");
  const [password, setPassword] = useState("");
  const [error, setError] = useState("");
  const [isSubmitting, setIsSubmitting] = useState(false);
  const { login } = useAuth();
  const router = useRouter();

  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault();
    setError("");
    setIsSubmitting(true);

    try {
      await login(email, password);
      router.push("/");
    } catch (err) {
      setError(err instanceof Error ? err.message : "Login failed");
    } finally {
      setIsSubmitting(false);
    }
  };

  return (
    <main style={styles.main}>
      <div style={styles.container}>
        <div style={styles.card}>
          <div style={styles.header}>
            <h1 style={styles.title}>Welcome back</h1>
            <p style={styles.subtitle}>Sign in to your account</p>
          </div>

          <form onSubmit={handleSubmit} style={styles.form}>
            {error && <div style={styles.error}>{error}</div>}

            <div style={styles.field}>
              <label htmlFor="email" style={styles.label}>Email</label>
              <input
                id="email"
                type="email"
                value={email}
                onChange={(e) => setEmail(e.target.value)}
                style={styles.input}
                placeholder="you@example.com"
                required
              />
            </div>

            <div style={styles.field}>
              <label htmlFor="password" style={styles.label}>Password</label>
              <input
                id="password"
                type="password"
                value={password}
                onChange={(e) => setPassword(e.target.value)}
                style={styles.input}
                placeholder="••••••••"
                required
              />
            </div>

            <button
              type="submit"
              style={{
                ...styles.button,
                opacity: isSubmitting ? 0.7 : 1,
              }}
              disabled={isSubmitting}
            >
              {isSubmitting ? "Signing in..." : "Sign in"}
            </button>
          </form>

          <p style={styles.footer}>
            Don&apos;t have an account?{" "}
            <a href="/signup" style={styles.link}>
              Sign up
            </a>
          </p>
        </div>
      </div>
    </main>
  );
}

const styles: Record<string, React.CSSProperties> = {
  main: {
    minHeight: "100vh",
    background: "linear-gradient(135deg, #0f0f23 0%, #1a1a3e 50%, #2d1b4e 100%)",
    display: "flex",
    alignItems: "center",
    justifyContent: "center",
    padding: "1rem",
  },
  container: {
    width: "100%",
    maxWidth: "420px",
  },
  card: {
    background: "rgba(255, 255, 255, 0.03)",
    backdropFilter: "blur(10px)",
    border: "1px solid rgba(255, 255, 255, 0.08)",
    borderRadius: "24px",
    padding: "3rem 2.5rem",
    boxShadow: "0 25px 50px -12px rgba(0, 0, 0, 0.5)",
  },
  header: {
    textAlign: "center" as const,
    marginBottom: "2.5rem",
  },
  title: {
    fontFamily: "'Instrument Serif', Georgia, serif",
    fontSize: "2.5rem",
    fontWeight: 400,
    color: "#fff",
    margin: 0,
    letterSpacing: "-0.02em",
  },
  subtitle: {
    fontFamily: "'DM Sans', system-ui, sans-serif",
    color: "rgba(255, 255, 255, 0.5)",
    marginTop: "0.5rem",
    fontSize: "0.95rem",
  },
  form: {
    display: "flex",
    flexDirection: "column" as const,
    gap: "1.5rem",
  },
  field: {
    display: "flex",
    flexDirection: "column" as const,
    gap: "0.5rem",
  },
  label: {
    fontFamily: "'DM Sans', system-ui, sans-serif",
    color: "rgba(255, 255, 255, 0.7)",
    fontSize: "0.875rem",
    fontWeight: 500,
  },
  input: {
    fontFamily: "'DM Sans', system-ui, sans-serif",
    padding: "0.875rem 1rem",
    fontSize: "1rem",
    background: "rgba(255, 255, 255, 0.05)",
    border: "1px solid rgba(255, 255, 255, 0.1)",
    borderRadius: "12px",
    color: "#fff",
    outline: "none",
    transition: "border-color 0.2s, box-shadow 0.2s",
  },
  button: {
    fontFamily: "'DM Sans', system-ui, sans-serif",
    marginTop: "0.5rem",
    padding: "1rem",
    fontSize: "1rem",
    fontWeight: 600,
    background: "linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%)",
    color: "#fff",
    border: "none",
    borderRadius: "12px",
    cursor: "pointer",
    transition: "transform 0.2s, box-shadow 0.2s",
    boxShadow: "0 4px 14px rgba(99, 102, 241, 0.4)",
  },
  error: {
    fontFamily: "'DM Sans', system-ui, sans-serif",
    padding: "0.875rem 1rem",
    background: "rgba(239, 68, 68, 0.1)",
    border: "1px solid rgba(239, 68, 68, 0.3)",
    borderRadius: "12px",
    color: "#fca5a5",
    fontSize: "0.875rem",
    textAlign: "center" as const,
  },
  footer: {
    fontFamily: "'DM Sans', system-ui, sans-serif",
    textAlign: "center" as const,
    marginTop: "2rem",
    color: "rgba(255, 255, 255, 0.5)",
    fontSize: "0.875rem",
  },
  link: {
    color: "#a78bfa",
    textDecoration: "none",
    fontWeight: 500,
  },
};