KalBot/app/page.js

'use client';
import { useState, useRef } from 'react';

// TODO: We should use this Kalshi green accent (#28CC95) all over the code.

export default function LoginPage() {
    const[email, setEmail] = useState('');
    const [password, setPassword] = useState('');
    const[captcha, setCaptcha] = useState('');
    const [error, setError] = useState('');
    const[success, setSuccess] = useState('');
    const captchaImgRef = useRef(null);

    const refreshCaptcha = () => {
        if (captchaImgRef.current) {
            captchaImgRef.current.src = `/api/captcha?${new Date().getTime()}`;
        }
    };

    const handleLogin = async (e) => {
        e.preventDefault();
        setError('');
        setSuccess('');

        const res = await fetch('/api/login', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({ email, password, captcha })
        });

        const data = await res.json();
        if (!res.ok) {
            setError(data.error);
            refreshCaptcha();
            setCaptcha('');
        } else {
            setSuccess(data.message);
        }
    };

    return (
        <div className="min-h-screen flex items-center justify-center bg-gray-50 text-gray-900 font-sans">
            <div className="bg-white p-8 rounded-lg shadow-xl w-full max-w-md border border-gray-100">
                <h1 className="text-2xl font-bold mb-6 text-center text-[#28CC95]">Kalbot Access</h1>
                
                {error && <div className="bg-red-50 border border-red-200 text-red-600 p-3 rounded mb-4 text-sm">{error}</div>}
                {success && <div className="bg-green-50 border border-green-200 text-green-600 p-3 rounded mb-4 text-sm">{success}</div>}

                <form onSubmit={handleLogin} className="space-y-4">
                    <div>
                        <label className="block text-sm font-medium text-gray-700 mb-1">Email</label>
                        <input 
                            type="email" 
                            required
                            className="w-full bg-white border border-gray-300 rounded px-3 py-2 focus:outline-none focus:border-[#28CC95] focus:ring-1 focus:ring-[#28CC95] transition-shadow"
                            value={email}
                            onChange={(e) => setEmail(e.target.value)}
                        />
                    </div>
                    <div>
                        <label className="block text-sm font-medium text-gray-700 mb-1">Password</label>
                        <input 
                            type="password" 
                            required
                            className="w-full bg-white border border-gray-300 rounded px-3 py-2 focus:outline-none focus:border-[#28CC95] focus:ring-1 focus:ring-[#28CC95] transition-shadow"
                            value={password}
                            onChange={(e) => setPassword(e.target.value)}
                        />
                    </div>
                    
                    <div>
                        <label className="block text-sm font-medium text-gray-700 mb-1">Captcha Verification</label>
                        <div className="flex items-center space-x-3 mb-2">
                            <img 
                                ref={captchaImgRef} 
                                src="/api/captcha" 
                                alt="captcha" 
                                className="h-12 rounded cursor-pointer border border-gray-300"
                                onClick={refreshCaptcha}
                                title="Click to refresh"
                            />
                            <button type="button" onClick={refreshCaptcha} className="text-sm font-medium text-[#28CC95] hover:opacity-80 transition-opacity">
                                Refresh
                            </button>
                        </div>
                        <input 
                            type="text" 
                            required
                            placeholder="Enter the text above"
                            className="w-full bg-white border border-gray-300 rounded px-3 py-2 focus:outline-none focus:border-[#28CC95] focus:ring-1 focus:ring-[#28CC95] transition-shadow"
                            value={captcha}
                            onChange={(e) => setCaptcha(e.target.value)}
                        />
                    </div>

                    <button 
                        type="submit" 
                        className="w-full bg-[#28CC95] hover:brightness-95 text-white font-bold py-2 px-4 rounded transition-all mt-6 shadow-sm"
                    >
                        Login
                    </button>
                </form>
            </div>
        </div>
    );
}