app/templates/login.html

{% extends "base.html" %}

{% block title %}Login - Rating Predictor{% endblock %}

{% block content %}
<div class="flex items-center justify-center min-h-[calc(100vh-200px)]">
    <div class="bg-white dark:bg-slate-800 rounded-2xl shadow-xl p-8 w-full max-w-md fade-in">
        <div class="text-center mb-8">
            <i class="fas fa-sign-in-alt text-5xl text-indigo-600 mb-4"></i>
            <h2 class="text-3xl font-bold text-gray-800 dark:text-gray-100">Đăng Nhập</h2>
            <p class="text-gray-600 dark:text-gray-400 mt-2">Welcome back to Rating Predictor</p>
        </div>
        
        <form id="loginForm" class="space-y-6">
            <div>
                <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
                    <i class="fas fa-user mr-2"></i>Username
                </label>
                <input 
                    type="text" 
                    id="username" 
                    name="username"
                    required
                    class="w-full px-4 py-3 border border-gray-300 dark:border-slate-600 rounded-lg focus:ring-2 focus:ring-indigo-500 focus:border-transparent transition bg-white dark:bg-slate-700 text-gray-900 dark:text-gray-100"
                    placeholder="Enter your username"
                >
            </div>
            
            <div>
                <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
                    <i class="fas fa-lock mr-2"></i>Password
                </label>
                <input 
                    type="password" 
                    id="password" 
                    name="password"
                    required
                    class="w-full px-4 py-3 border border-gray-300 dark:border-slate-600 rounded-lg focus:ring-2 focus:ring-indigo-500 focus:border-transparent transition bg-white dark:bg-slate-700 text-gray-900 dark:text-gray-100"
                    placeholder="Enter your password"
                >
            </div>
            
            <button 
                type="submit"
                id="login-btn"
                class="w-full bg-indigo-600 text-white py-3 rounded-lg hover:bg-indigo-700 transition font-medium shadow-lg hover:shadow-xl"
            >
                <i class="fas fa-sign-in-alt mr-2"></i>Login
            </button>
        </form>
        
        <div class="mt-6 text-center">
            <p class="text-gray-600 dark:text-gray-400">
                Don't have an account? 
                <a href="/register" class="text-indigo-600 hover:text-indigo-800 dark:text-indigo-400 dark:hover:text-indigo-300 font-medium">
                    Register here
                </a>
            </p>
        </div>
    </div>
</div>
{% endblock %}

{% block scripts %}
<script>
    document.getElementById('loginForm').addEventListener('submit', async (e) => {
        e.preventDefault();
        
        const username = document.getElementById('username').value;
        const password = document.getElementById('password').value;
        const loginBtn = document.getElementById('login-btn');
        
        // Show loading state
        loginBtn.disabled = true;
        loginBtn.innerHTML = '<i class="fas fa-spinner fa-spin mr-2"></i>Logging in...';
        
        try {
            // Create form data for OAuth2
            const formData = new URLSearchParams();
            formData.append('username', username);
            formData.append('password', password);
            
            const response = await fetch('/api/auth/login', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/x-www-form-urlencoded',
                },
                body: formData
            });
            
            const data = await response.json();
            
            if (response.ok) {
                // Save token
                localStorage.setItem('access_token', data.access_token);
                localStorage.setItem('username', username);
                
                // Show success toast
                toast.success('Login Successful', 'Welcome back, ' + username + '!');
                
                // Redirect to dashboard
                setTimeout(() => {
                    window.location.href = '/dashboard';
                }, 1000);
            } else {
                // Show error toast
                toast.error('Login Failed', data.detail || 'Invalid credentials. Please try again.');
                loginBtn.disabled = false;
                loginBtn.innerHTML = '<i class="fas fa-sign-in-alt mr-2"></i>Login';
            }
        } catch (error) {
            toast.error('Error', 'An error occurred. Please try again.');
            loginBtn.disabled = false;
            loginBtn.innerHTML = '<i class="fas fa-sign-in-alt mr-2"></i>Login';
        }
    });
</script>
{% endblock %}