PlateRecApp/assets/web/login.html

<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>PlateRecApp - 登录</title>
    <style>
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background: #0f1419;
            color: #e1e8ed;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .login-container {
            width: 100%;
            max-width: 400px;
            padding: 20px;
        }
        .login-card {
            background: #1a2332;
            border-radius: 12px;
            padding: 40px 32px;
            box-shadow: 0 8px 32px rgba(0,0,0,0.4);
            border: 1px solid #2a3a4a;
        }
        .logo {
            text-align: center;
            margin-bottom: 32px;
        }
        .logo h1 {
            font-size: 24px;
            font-weight: 600;
            color: #4fc3f7;
            margin-bottom: 4px;
        }
        .logo p {
            font-size: 13px;
            color: #6b7b8d;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            font-size: 13px;
            color: #8899aa;
            margin-bottom: 6px;
            font-weight: 500;
        }
        .form-group input {
            width: 100%;
            padding: 12px 16px;
            background: #0f1419;
            border: 1px solid #2a3a4a;
            border-radius: 8px;
            color: #e1e8ed;
            font-size: 15px;
            transition: border-color 0.2s, box-shadow 0.2s;
            outline: none;
        }
        .form-group input:focus {
            border-color: #4fc3f7;
            box-shadow: 0 0 0 3px rgba(79,195,247,0.15);
        }
        .form-group input::placeholder {
            color: #4a5568;
        }
        .form-options {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
            font-size: 13px;
        }
        .remember-me {
            display: flex;
            align-items: center;
            gap: 6px;
            cursor: pointer;
            color: #8899aa;
        }
        .remember-me input[type="checkbox"] {
            width: 16px;
            height: 16px;
            accent-color: #4fc3f7;
            cursor: pointer;
        }
        .btn-login {
            width: 100%;
            padding: 12px;
            background: linear-gradient(135deg, #4fc3f7, #0288d1);
            border: none;
            border-radius: 8px;
            color: white;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: opacity 0.2s, transform 0.1s;
        }
        .btn-login:hover { opacity: 0.9; }
        .btn-login:active { transform: scale(0.98); }
        .btn-login:disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }
        .error-msg {
            background: rgba(239,68,68,0.1);
            border: 1px solid rgba(239,68,68,0.3);
            color: #f87171;
            padding: 10px 14px;
            border-radius: 8px;
            font-size: 13px;
            margin-bottom: 16px;
            display: none;
        }
        .error-msg.show { display: block; }
        .rate-limit-msg {
            background: rgba(245,158,11,0.1);
            border: 1px solid rgba(245,158,11,0.3);
            color: #fbbf24;
            padding: 10px 14px;
            border-radius: 8px;
            font-size: 13px;
            margin-bottom: 16px;
            display: none;
        }
        .footer {
            text-align: center;
            margin-top: 24px;
            font-size: 12px;
            color: #4a5568;
        }
        .loading-spinner {
            display: inline-block;
            width: 16px;
            height: 16px;
            border: 2px solid rgba(255,255,255,0.3);
            border-top-color: white;
            border-radius: 50%;
            animation: spin 0.6s linear infinite;
            margin-right: 8px;
            vertical-align: middle;
        }
        @keyframes spin { to { transform: rotate(360deg); } }
    
        @media (max-width: 480px) {
            .login-container { padding: 12px; }
            .login-card { padding: 24px 20px; }
            .logo h1 { font-size: 20px; }
            .form-group input { padding: 10px 12px; font-size: 14px; }
            .btn-login { padding: 10px; font-size: 14px; }
        }
    </style>
</head>
<body>
    <div class="login-container">
        <div class="login-card">
            <div class="logo">
                <h1>🔒 PlateRecApp</h1>
                <p>车牌识别管理系统</p>
            </div>

            <div id="error-msg" class="error-msg"></div>
            <div id="rate-limit-msg" class="rate-limit-msg"></div>

            <form id="login-form" autocomplete="off">
                <div class="form-group">
                    <label for="username">用户名</label>
                    <input type="text" id="username" name="username"
                           placeholder="请输入用户名" required autofocus
                           autocomplete="username">
                </div>
                <div class="form-group">
                    <label for="password">密码</label>
                    <input type="password" id="password" name="password"
                           placeholder="请输入密码" required
                           autocomplete="current-password">
                </div>
                <div class="form-options">
                    <label class="remember-me">
                        <input type="checkbox" id="remember" name="remember">
                        记住登录 (7天)
                    </label>
                </div>
                <button type="submit" class="btn-login" id="btn-login">登 录</button>
            </form>

            <div class="footer">
                PlateRecApp v5.0 | Secure Login
            </div>
        </div>
    </div>

    <script>
        const form = document.getElementById('login-form');
        const btnLogin = document.getElementById('btn-login');
        const errorDiv = document.getElementById('error-msg');
        const rateLimitDiv = document.getElementById('rate-limit-msg');

        // Check if already logged in
        fetch('/api/auth/status')
            .then(r => r.json())
            .then(data => {
                if (data.authenticated) {
                    const redirect = new URLSearchParams(window.location.search).get('redirect') || '/';
                    window.location.href = redirect;
                }
            })
            .catch(() => {});

        form.addEventListener('submit', async (e) => {
            e.preventDefault();
            errorDiv.classList.remove('show');
            rateLimitDiv.classList.remove('show');
            btnLogin.disabled = true;
            btnLogin.innerHTML = '<span class="loading-spinner"></span>登录中...';

            const username = document.getElementById('username').value.trim();
            const password = document.getElementById('password').value;
            const remember = document.getElementById('remember').checked;

            try {
                const resp = await fetch('/api/auth/login', {
                    method: 'POST',
                    headers: { 'Content-Type': 'application/json' },
                    body: JSON.stringify({ username, password, remember })
                });

                const data = await resp.json();

                if (resp.status === 429) {
                    rateLimitDiv.textContent = data.message || '请求过于频繁，请稍后再试';
                    rateLimitDiv.classList.add('show');
                } else if (resp.status === 401) {
                    errorDiv.textContent = data.message || '用户名或密码错误';
                    errorDiv.classList.add('show');
                    document.getElementById('password').value = '';
                    document.getElementById('password').focus();
                } else if (resp.status === 423) {
                    errorDiv.textContent = data.message || '账户已锁定，请稍后再试';
                    errorDiv.classList.add('show');
                } else if (data.success) {
                    const redirect = new URLSearchParams(window.location.search).get('redirect') || '/';
                    window.location.href = redirect;
                    return;
                } else {
                    errorDiv.textContent = data.message || '登录失败';
                    errorDiv.classList.add('show');
                }
            } catch (err) {
                errorDiv.textContent = '网络错误，请重试';
                errorDiv.classList.add('show');
            }

            btnLogin.disabled = false;
            btnLogin.textContent = '登 录';
        });
    </script>
</body>
</html>