{% extends "base.html" %}

{% block title %}Register - Chatty{% endblock %}

{% block content %}
<div class="auth-container">
    <div class="auth-form-wrapper">
        <form method="POST" class="auth-form" id="registerForm" novalidate>
            {% if config.WTF_CSRF_ENABLED %}
            <input type="hidden" name="csrf_token" value="{{ csrf_token() }}"/>
            {% endif %}
            <h2>Create Account</h2>
            
            <div class="form-group">
                <label for="email">Email Address</label>
                <input 
                    type="email" 
                    id="email" 
                    name="email" 
                    required 
                    autocomplete="email"
                    value="{{ request.form.email or '' }}"
                    placeholder="Enter your email"
                >
                <div class="form-error" id="emailError"></div>
            </div>
            
            <div class="form-group">
                <label for="password">Password</label>
                <input 
                    type="password" 
                    id="password" 
                    name="password" 
                    required 
                    autocomplete="new-password"
                    placeholder="Enter your password (min 8 characters)"
                >
                <div class="form-error" id="passwordError"></div>
            </div>
            
            <div class="form-group">
                <label for="confirmPassword">Confirm Password</label>
                <input 
                    type="password" 
                    id="confirmPassword" 
                    name="confirm_password" 
                    required 
                    autocomplete="new-password"
                    placeholder="Confirm your password"
                >
                <div class="form-error" id="confirmPasswordError"></div>
            </div>
            
            <button type="submit" class="auth-button" id="registerButton">
                <span id="registerButtonText">Create Account</span>
                <div class="spinner" id="registerSpinner" style="display: none;"></div>
            </button>
            
            <div class="auth-links">
                <p>Already have an account? <a href="{{ url_for('login') }}">Login here</a></p>
            </div>
        </form>
    </div>
</div>
{% endblock %}

{% block scripts %}
<script>
document.addEventListener('DOMContentLoaded', function() {
    const form = document.getElementById('registerForm');
    const emailInput = document.getElementById('email');
    const passwordInput = document.getElementById('password');
    const confirmPasswordInput = document.getElementById('confirmPassword');
    const registerButton = document.getElementById('registerButton');
    const registerButtonText = document.getElementById('registerButtonText');
    const registerSpinner = document.getElementById('registerSpinner');
    
    // Email validation
    function validateEmail(email) {
        const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
        return emailRegex.test(email);
    }
    
    // Password validation
    function validatePassword(password) {
        return password.length >= 8;
    }
    
    // Show error message
    function showError(inputId, message) {
        const errorElement = document.getElementById(inputId + 'Error');
        errorElement.textContent = message;
        errorElement.classList.add('show');
        document.getElementById(inputId).style.borderColor = '#ef4444';
    }
    
    // Clear error message
    function clearError(inputId) {
        const errorElement = document.getElementById(inputId + 'Error');
        errorElement.textContent = '';
        errorElement.classList.remove('show');
        document.getElementById(inputId).style.borderColor = 'black';
    }
    
    // Real-time email validation
    emailInput.addEventListener('blur', function() {
        const email = this.value.trim();
        if (email && !validateEmail(email)) {
            showError('email', 'Please enter a valid email address');
        } else {
            clearError('email');
        }
    });
    
    emailInput.addEventListener('input', function() {
        if (this.style.borderColor === 'rgb(239, 68, 68)') {
            clearError('email');
        }
    });
    
    // Real-time password validation
    passwordInput.addEventListener('blur', function() {
        const password = this.value;
        if (password && !validatePassword(password)) {
            showError('password', 'Password must be at least 8 characters long');
        } else {
            clearError('password');
            // Re-validate confirm password if it has a value
            if (confirmPasswordInput.value) {
                validatePasswordMatch();
            }
        }
    });
    
    passwordInput.addEventListener('input', function() {
        if (this.style.borderColor === 'rgb(239, 68, 68)') {
            clearError('password');
        }
        // Re-validate confirm password if it has a value
        if (confirmPasswordInput.value) {
            validatePasswordMatch();
        }
    });
    
    // Password matching validation
    function validatePasswordMatch() {
        const password = passwordInput.value;
        const confirmPassword = confirmPasswordInput.value;
        
        if (confirmPassword && password !== confirmPassword) {
            showError('confirmPassword', 'Passwords do not match');
            return false;
        } else {
            clearError('confirmPassword');
            return true;
        }
    }
    
    confirmPasswordInput.addEventListener('blur', validatePasswordMatch);
    confirmPasswordInput.addEventListener('input', function() {
        if (this.style.borderColor === 'rgb(239, 68, 68)') {
            validatePasswordMatch();
        }
    });
    
    // Form submission
    form.addEventListener('submit', function(e) {
        e.preventDefault();
        
        // Clear previous errors
        clearError('email');
        clearError('password');
        clearError('confirmPassword');
        
        const email = emailInput.value.trim();
        const password = passwordInput.value;
        const confirmPassword = confirmPasswordInput.value;
        
        let hasErrors = false;
        
        // Validate email
        if (!email) {
            showError('email', 'Email is required');
            hasErrors = true;
        } else if (!validateEmail(email)) {
            showError('email', 'Please enter a valid email address');
            hasErrors = true;
        }
        
        // Validate password
        if (!password) {
            showError('password', 'Password is required');
            hasErrors = true;
        } else if (!validatePassword(password)) {
            showError('password', 'Password must be at least 8 characters long');
            hasErrors = true;
        }
        
        // Validate confirm password
        if (!confirmPassword) {
            showError('confirmPassword', 'Please confirm your password');
            hasErrors = true;
        } else if (password !== confirmPassword) {
            showError('confirmPassword', 'Passwords do not match');
            hasErrors = true;
        }
        
        if (hasErrors) {
            return;
        }
        
        // Show loading state
        registerButton.disabled = true;
        registerButtonText.style.display = 'none';
        registerSpinner.style.display = 'inline-block';
        
        // Submit form
        this.submit();
    });
    
    // Focus first input
    emailInput.focus();
    
    // Handle browser back button to reset form state
    window.addEventListener('pageshow', function(event) {
        if (event.persisted) {
            registerButton.disabled = false;
            registerButtonText.style.display = 'inline';
            registerSpinner.style.display = 'none';
        }
    });
});
</script>
{% endblock %}