"use client";

import { useState } from "react";
import { useRouter } from "next/navigation";
import Link from "next/link";
import { Eye, EyeOff, Loader2, AlertTriangle } from "lucide-react";
import { Button } from "@/components/ui/button";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
import { Separator } from "@/components/ui/separator";
import { authApi } from "@/lib/api";
import { tokenStore } from "@/lib/auth-store";
import { GoogleLoginButton } from "@/components/auth/google-login-button";

export default function LoginPage() {
  const router = useRouter();
  const [showPassword, setShowPassword] = useState(false);
  const [loading, setLoading] = useState(false);
  const [email, setEmail] = useState("");
  const [password, setPassword] = useState("");
  const [error, setError] = useState("");

  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault();
    setError("");
    setLoading(true);
    try {
      const tokens = await authApi.login(email, password);
      tokenStore.set(tokens.access_token, tokens.refresh_token);
      router.push("/dashboard");
    } catch (err: unknown) {
      setError(err instanceof Error ? err.message : "Login failed");
    } finally {
      setLoading(false);
    }
  };

  return (
    <div className="w-full max-w-sm">
      <div className="text-center mb-8">
        <h1 className="text-2xl font-black text-white mb-2">Welcome back</h1>
        <p className="text-zinc-500 text-sm">Sign in to your ReelsCutter account</p>
      </div>

      <div className="glass-card p-6 space-y-5">
        <GoogleLoginButton
          text="signin_with"
          onSuccess={() => router.push("/dashboard")}
          onError={setError}
        />

        <div className="flex items-center gap-3">
          <Separator className="flex-1 bg-white/8" />
          <span className="text-xs text-zinc-600">or email</span>
          <Separator className="flex-1 bg-white/8" />
        </div>

        <form onSubmit={handleSubmit} className="space-y-4">
          {error && (
            <div className="flex items-center gap-2 text-xs text-red-400 p-3 rounded-lg bg-red-500/10 border border-red-500/20">
              <AlertTriangle className="w-3.5 h-3.5 flex-shrink-0" />
              {error}
            </div>
          )}

          <div className="space-y-1.5">
            <Label className="text-xs text-zinc-400">Email</Label>
            <Input
              type="email"
              placeholder="you@example.com"
              required
              value={email}
              onChange={(e) => setEmail(e.target.value)}
              className="bg-white/5 border-white/10 text-white placeholder:text-zinc-700 focus:border-violet-500/50 h-10"
            />
          </div>

          <div className="space-y-1.5">
            <div className="flex items-center justify-between">
              <Label className="text-xs text-zinc-400">Password</Label>
              <Link
                href="/forgot-password"
                className="text-xs text-violet-400 hover:text-violet-300 transition-colors"
              >
                Forgot password?
              </Link>
            </div>
            <div className="relative">
              <Input
                type={showPassword ? "text" : "password"}
                placeholder="••••••••"
                required
                value={password}
                onChange={(e) => setPassword(e.target.value)}
                className="bg-white/5 border-white/10 text-white placeholder:text-zinc-700 focus:border-violet-500/50 h-10 pr-10"
              />
              <button
                type="button"
                onClick={() => setShowPassword(!showPassword)}
                className="absolute right-3 top-1/2 -translate-y-1/2 text-zinc-500 hover:text-zinc-300"
              >
                {showPassword ? <EyeOff className="w-4 h-4" /> : <Eye className="w-4 h-4" />}
              </button>
            </div>
          </div>

          <Button
            type="submit"
            disabled={loading}
            className="w-full bg-gradient-to-r from-violet-600 to-violet-500 hover:from-violet-500 hover:to-violet-400 text-white border-0 shadow-lg shadow-violet-900/30 h-11"
          >
            {loading ? <Loader2 className="w-4 h-4 animate-spin" /> : "Sign In"}
          </Button>
        </form>
      </div>

      <p className="text-center text-sm text-zinc-500 mt-6">
        Don&apos;t have an account?{" "}
        <Link href="/signup" className="text-violet-400 hover:text-violet-300 transition-colors font-medium">
          Sign up free
        </Link>
      </p>
    </div>
  );
}