"use client";

import { useState } from "react";
import { useRouter } from "next/navigation";
import { signIn } from "next-auth/react";
import Link from "next/link";
import Image from "next/image";
import { Button } from "@/components/ui/button";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";
import { useToast } from "@/hooks/use-toast";

export default function SignupPage() {
  const router = useRouter();
  const { toast } = useToast();
  const [isLoading, setIsLoading] = useState(false);
  const [formData, setFormData] = useState({
    name: "",
    email: "",
    password: "",
    confirmPassword: "",
    role: "AGENT",
  });

  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault();

    if (formData.password !== formData.confirmPassword) {
      toast({
        title: "Error",
        description: "Passwords do not match",
        variant: "destructive",
      });
      return;
    }

    setIsLoading(true);

    try {
      const response = await fetch("/api/signup", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({
          name: formData.name,
          email: formData.email,
          password: formData.password,
          role: formData.role,
        }),
      });

      if (!response.ok) {
        const data = await response.json();
        throw new Error(data.error || "Failed to sign up");
      }

      toast({
        title: "Success",
        description: "Account created successfully",
      });

      // Auto sign in after signup
      await signIn("credentials", {
        email: formData.email,
        password: formData.password,
        redirect: false,
      });

      router.push("/dashboard");
      router.refresh();
    } catch (error) {
      toast({
        title: "Error",
        description: error instanceof Error ? error.message : "Something went wrong",
        variant: "destructive",
      });
    } finally {
      setIsLoading(false);
    }
  };

  return (
    <div className="min-h-screen flex items-center justify-center bg-gradient-to-br from-blue-50 to-gray-100 p-4">
      <Card className="w-full max-w-md">
        <CardHeader className="space-y-4">
          <div className="flex justify-center">
            <div className="flex items-center gap-3">
              <div className="relative w-14 h-14">
                <Image
                  src="/logo.png"
                  alt="Greco"
                  fill
                  className="object-contain"
                />
              </div>
              <span className="text-3xl font-bold tracking-wide text-blue-900">GRECO</span>
            </div>
          </div>
          <CardTitle className="text-2xl text-center">Create Account</CardTitle>
          <CardDescription className="text-center">
            Sign up to get started with Greco Workflow System
          </CardDescription>
        </CardHeader>
        <CardContent>
          <form onSubmit={handleSubmit} className="space-y-4">
            <div className="space-y-2">
              <Label htmlFor="name">Full Name</Label>
              <Input
                id="name"
                type="text"
                placeholder="John Doe"
                value={formData.name}
                onChange={(e) =>
                  setFormData({ ...formData, name: e.target.value })
                }
                required
              />
            </div>
            <div className="space-y-2">
              <Label htmlFor="email">Email</Label>
              <Input
                id="email"
                type="email"
                placeholder="john@example.com"
                value={formData.email}
                onChange={(e) =>
                  setFormData({ ...formData, email: e.target.value })
                }
                required
              />
            </div>
            <div className="space-y-2">
              <Label htmlFor="role">Role</Label>
              <Select
                value={formData.role}
                onValueChange={(value) =>
                  setFormData({ ...formData, role: value })
                }
              >
                <SelectTrigger>
                  <SelectValue />
                </SelectTrigger>
                <SelectContent>
                  <SelectItem value="AGENT">Agent</SelectItem>
                  <SelectItem value="ADMIN">Admin</SelectItem>
                </SelectContent>
              </Select>
            </div>
            <div className="space-y-2">
              <Label htmlFor="password">Password</Label>
              <Input
                id="password"
                type="password"
                placeholder="••••••••"
                value={formData.password}
                onChange={(e) =>
                  setFormData({ ...formData, password: e.target.value })
                }
                required
              />
            </div>
            <div className="space-y-2">
              <Label htmlFor="confirmPassword">Confirm Password</Label>
              <Input
                id="confirmPassword"
                type="password"
                placeholder="••••••••"
                value={formData.confirmPassword}
                onChange={(e) =>
                  setFormData({ ...formData, confirmPassword: e.target.value })
                }
                required
              />
            </div>
            <Button type="submit" className="w-full" disabled={isLoading}>
              {isLoading ? "Creating account..." : "Sign Up"}
            </Button>
          </form>
          <div className="mt-4 text-center text-sm">
            <span className="text-muted-foreground">Already have an account? </span>
            <Link href="/login" className="text-primary hover:underline">
              Sign in
            </Link>
          </div>
        </CardContent>
      </Card>
    </div>
  );
}