"use client";

import React, { forwardRef, useState } from "react";
import { BaseComponentProps, User } from "../../types";
import { useAuth } from "../../hooks";
import { Button } from "../ui/Button";

export interface LoginButtonProps extends BaseComponentProps {
  provider: "google" | "kakao" | "naver" | "email";
  variant?: "primary" | "secondary" | "outline";
  size?: "sm" | "md" | "lg";
  disabled?: boolean;
  onSuccess?: (user: User | null) => void;
  onError?: (error: Error) => void;
  callbackUrl?: string;
}

export const LoginButton = forwardRef<HTMLButtonElement, LoginButtonProps>(
  (
    {
      className = "",
      provider,
      variant = "outline",
      size = "md",
      disabled = false,
      onSuccess,
      onError,
      callbackUrl,
      children,
      ...props
    },
    ref
  ) => {
    const { signIn, isLoading } = useAuth();
    const [isSigningIn, setIsSigningIn] = useState(false);

    const handleSignIn = async () => {
      if (isSigningIn || disabled) return;

      setIsSigningIn(true);
      try {
        await signIn(provider, { callbackUrl });
        onSuccess?.(null); // We don't have user data immediately after sign in
      } catch (error) {
        console.error(`Sign in with ${provider} failed:`, error);
        onError?.(error as Error);
      } finally {
        setIsSigningIn(false);
      }
    };

    const getProviderIcon = () => {
      switch (provider) {
        case "google":
          return (
            <svg className="w-5 h-5 mr-2" viewBox="0 0 24 24">
              <path
                fill="#4285F4"
                d="M22.56 12.25c0-.78-.07-1.53-.2-2.25H12v4.26h5.92c-.26 1.37-1.04 2.53-2.21 3.31v2.77h3.57c2.08-1.92 3.28-4.74 3.28-8.09z"
              />
              <path
                fill="#34A853"
                d="M12 23c2.97 0 5.46-.98 7.28-2.66l-3.57-2.77c-.98.66-2.23 1.06-3.71 1.06-2.86 0-5.29-1.93-6.16-4.53H2.18v2.84C3.99 20.53 7.7 23 12 23z"
              />
              <path
                fill="#FBBC05"
                d="M5.84 14.09c-.22-.66-.35-1.36-.35-2.09s.13-1.43.35-2.09V7.07H2.18C1.43 8.55 1 10.22 1 12s.43 3.45 1.18 4.93l2.85-2.22.81-.62z"
              />
              <path
                fill="#EA4335"
                d="M12 5.38c1.62 0 3.06.56 4.21 1.64l3.15-3.15C17.45 2.09 14.97 1 12 1 7.7 1 3.99 3.47 2.18 7.07l3.66 2.84c.87-2.6 3.3-4.53 6.16-4.53z"
              />
            </svg>
          );
        case "kakao":
          return (
            <svg className="w-5 h-5 mr-2" viewBox="0 0 24 24">
              <path
                fill="#FEE500"
                d="M12 3c5.799 0 10.5 3.664 10.5 8.185 0 4.52-4.701 8.184-10.5 8.184a13.5 13.5 0 0 1-1.082-.043l-3.987 2.077c-.35.183-.749-.24-.574-.609l1.575-3.321C5.743 16.695 1.5 12.853 1.5 11.185 1.5 6.664 6.201 3 12 3z"
              />
            </svg>
          );
        case "naver":
          return (
            <svg className="w-5 h-5 mr-2" viewBox="0 0 24 24">
              <path
                fill="#03C75A"
                d="M16.273 12.845 7.376 0H0v24h7.727V11.155L16.624 24H24V0h-7.727v12.845z"
              />
            </svg>
          );
        case "email":
          return (
            <svg
              className="w-5 h-5 mr-2"
              fill="none"
              stroke="currentColor"
              viewBox="0 0 24 24"
            >
              <path
                strokeLinecap="round"
                strokeLinejoin="round"
                strokeWidth={2}
                d="M3 8l7.89 4.26a2 2 0 002.22 0L21 8M5 19h14a2 2 0 002-2V7a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z"
              />
            </svg>
          );
        default:
          return null;
      }
    };

    const getProviderName = () => {
      switch (provider) {
        case "google":
          return "Google";
        case "kakao":
          return "Kakao";
        case "naver":
          return "Naver";
        case "email":
          return "Email";
        default:
          return "Provider";
      }
    };

    return (
      <Button
        ref={ref}
        variant={variant}
        size={size}
        disabled={disabled || isLoading || isSigningIn}
        loading={isSigningIn}
        onClick={handleSignIn}
        className={`justify-center ${className}`}
        {...props}
      >
        {!isSigningIn && getProviderIcon()}
        {children || `Continue with ${getProviderName()}`}
      </Button>
    );
  }
);

LoginButton.displayName = "LoginButton";