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<!DOCTYPE html>
<html lang="en-US">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>QA Annotation System - Login</title>
    <link rel="stylesheet" href="/static/css/auth.css">
</head>
<body>
    <div class="container">
        <div class="auth-container">
            <div class="auth-header">
                <button class="auth-lang-switch" id="languageSwitchBtn" type="button" title="Switch Language">
                    <span id="currentLanguage">English</span>
                </button>
                <h1 data-i18n="auth.loginTitle">QA Annotation System</h1>
                <div class="tab-buttons">
                    <button class="tab-btn active" data-tab="login" data-i18n="auth.login">Login</button>
                    <button class="tab-btn" data-tab="register" data-i18n="auth.register">Register</button>
                </div>
            </div>

            <!-- 登录表单 -->
            <div class="form-container active" id="login-form">
                <form id="loginForm">
                    <div class="form-group">
                        <label for="login-username" data-i18n="auth.username">Username</label>
                        <input
                            type="text"
                            id="login-username"
                            name="username"
                            required
                            minlength="3"
                            maxlength="50"
                            value="admin"
                            data-i18n-placeholder="auth.usernamePlaceholder"
                            placeholder="Please enter username"
                        >
                    </div>
                    <div class="form-group">
                        <label for="login-password" data-i18n="auth.password">Password</label>
                        <div class="password-field">
                            <input
                                type="password"
                                id="login-password"
                                name="password"
                                required
                                minlength="6"
                                value="123456"
                                data-i18n-placeholder="auth.passwordPlaceholder"
                                placeholder="Please enter password"
                            >
                            <button
                                type="button"
                                class="password-toggle"
                                id="login-password-toggle"
                                data-i18n-aria-label="auth.showPassword"
                                aria-label="Show password"
                                title="Show password"
                            >
                                <svg class="icon-eye" viewBox="0 0 24 24" aria-hidden="true">
                                    <path d="M12 5C7 5 2.73 8.11 1 12c1.73 3.89 6 7 11 7s9.27-3.11 11-7c-1.73-3.89-6-7-11-7zm0 11a4 4 0 1 1 0-8 4 4 0 0 1 0 8z" fill="currentColor"/>
                                </svg>
                                <svg class="icon-eye-off" viewBox="0 0 24 24" aria-hidden="true">
                                    <path d="M12 7a4.5 4.5 0 0 1 4.5 4.5c0 .57-.11 1.12-.31 1.62l2.2 2.2A11.77 11.77 0 0 0 23 12c-1.73-3.89-6-7-11-7-1.45 0-2.84.24-4.12.67l1.97 1.97c.5-.2 1.05-.31 1.62-.31zM2 4.27l2.28 2.28A11.74 11.74 0 0 0 1 12c1.73 3.89 6 7 11 7 1.55 0 3.03-.3 4.38-.84l2.58 2.58L21.73 22 20 20.27 3.27 3 2 4.27zm7.53 7.53-1.77-1.77A2.5 2.5 0 0 0 9.5 12c0 1.38 1.12 2.5 2.5 2.5.47 0 .91-.13 1.29-.35l-1.76-1.76z" fill="currentColor"/>
                                </svg>
                            </button>
                        </div>
                    </div>
                    <div class="form-group">
                        <button type="submit" class="btn btn-primary"><span data-i18n="auth.login">Login</span></button>
                        <p class="demo-hint" data-i18n="auth.demoHint">Demo: Default admin credentials are pre-filled. Click Login to get started.</p>
                    </div>
                    <div class="message" id="login-message"></div>
                </form>
            </div>

            <!-- 注册表单 -->
            <div class="form-container" id="register-form">
                <form id="registerForm">
                    <div class="form-group">
                        <label for="register-username" data-i18n="auth.username">Username</label>
                        <input
                            type="text"
                            id="register-username"
                            name="username"
                            required
                            minlength="3"
                            maxlength="50"
                            data-i18n-placeholder="auth.usernamePlaceholderWithHint"
                            placeholder="Please enter username (3-50 characters)"
                        >
                    </div>
                    <div class="form-group">
                        <label for="register-password" data-i18n="auth.password">Password</label>
                        <input
                            type="password"
                            id="register-password"
                            name="password"
                            required
                            minlength="6"
                            data-i18n-placeholder="auth.passwordPlaceholderWithHint"
                            placeholder="Please enter password (at least 6 characters)"
                        >
                    </div>
                    <div class="form-group">
                        <label for="register-fullname" data-i18n="auth.fullnameOptional">Full Name (optional)</label>
                        <input
                            type="text"
                            id="register-fullname"
                            name="full_name"
                            maxlength="100"
                            data-i18n-placeholder="auth.fullnamePlaceholder"
                            placeholder="Please enter full name"
                        >
                    </div>
                    <div class="form-group">
                        <label for="register-organization" data-i18n="auth.organizationOptional">Organization (optional)</label>
                        <select id="register-organization" name="organization">
                            <option value="" data-i18n="auth.selectOrganization">Please select</option>
                            <option value="崖州湾实验室">崖州湾实验室</option>
                            <option value="之江实验室">之江实验室</option>
                        </select>
                    </div>
                    <div class="form-group">
                        <label for="register-team" data-i18n="auth.teamOptional">Team (optional)</label>
                        <input
                            type="text"
                            id="register-team"
                            name="team"
                            maxlength="100"
                            data-i18n-placeholder="auth.teamPlaceholder"
                            placeholder="Please enter team"
                        >
                    </div>
                    <div class="form-group">
                        <label for="register-species" data-i18n="auth.speciesOptional">Species (optional)</label>
                        <input
                            type="text"
                            id="register-species"
                            name="species"
                            maxlength="100"
                            data-i18n-placeholder="auth.speciesPlaceholder"
                            placeholder="Please enter species"
                        >
                    </div>
                    <div class="form-group">
                        <button type="submit" class="btn btn-primary"><span data-i18n="auth.register">Register</span></button>
                    </div>
                    <div class="message" id="register-message"></div>
                </form>
            </div>
        </div>
    </div>
    <script src="https://unpkg.com/i18next@23.7.11/dist/umd/i18next.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/crypto-js@4.2.0/crypto-js.js"></script>
    <script src="/static/js/api.js"></script>
    <script src="/static/js/i18n-helper.js"></script>
    <script src="/static/js/auth.js"></script>

    <!-- i18n 国际化初始化 -->
    <script>
        // 等待所有脚本加载完成后再初始化 i18n
        window.addEventListener('load', async function() {
            if (typeof i18next === 'undefined') {
                console.error('i18next 库未加载');
                return;
            }

            const savedLanguage = localStorage.getItem('appLanguage') || 'en-US';

            try {
                const [zhCN, enUS] = await Promise.all([
                    fetch('/static/locales/zh-CN.json').then(r => r.json()),
                    fetch('/static/locales/en-US.json').then(r => r.json())
                ]);

                await i18next.init({
                    lng: savedLanguage,
                    fallbackLng: 'en-US',
                    debug: false,
                    resources: {
                        'zh-CN': {
                            translation: zhCN.translation
                        },
                        'en-US': {
                            translation: enUS.translation
                        }
                    }
                });

                window.i18next = i18next;
                window.t = function(key, options) {
                    return i18next.t(key, options);
                };

                updatePageLanguage();

                const langBtn = document.getElementById('languageSwitchBtn');
                if (langBtn) {
                    langBtn.addEventListener('click', toggleLanguage);
                }
            } catch (error) {
                console.error('i18next 初始化失败:', error);
            }
        });

        function toggleLanguage() {
            if (!window.i18next) return;

            const currentLang = window.i18next.language;
            const newLang = currentLang === 'zh-CN' ? 'en-US' : 'zh-CN';

            window.i18next.changeLanguage(newLang, () => {
                localStorage.setItem('appLanguage', newLang);
                updatePageLanguage();
            });
        }

        function updatePageLanguage() {
            if (!window.i18next) return;

            const lang = window.i18next.language;
            document.documentElement.lang = lang;

            const langBtn = document.getElementById('currentLanguage');
            if (langBtn) {
                langBtn.textContent = lang === 'zh-CN' ? '中文' : 'English';
            }

            // 更新所有带有 data-i18n 属性的元素
            document.querySelectorAll('[data-i18n]').forEach(element => {
                const key = element.getAttribute('data-i18n');
                const translation = window.i18next.t(key);

                if (element.children.length === 1 && element.children[0].tagName === 'SPAN') {
                    const span = element.children[0];
                    if (span.hasAttribute('data-i18n')) {
                        span.textContent = window.i18next.t(span.getAttribute('data-i18n'));
                    } else {
                        element.textContent = translation;
                    }
                } else {
                    element.textContent = translation;
                }
            });

            // 更新 placeholder
            document.querySelectorAll('[data-i18n-placeholder]').forEach(element => {
                const key = element.getAttribute('data-i18n-placeholder');
                element.placeholder = window.i18next.t(key);
            });

            // 更新 aria-label
            document.querySelectorAll('[data-i18n-aria-label]').forEach(element => {
                const key = element.getAttribute('data-i18n-aria-label');
                element.setAttribute('aria-label', window.i18next.t(key));
                element.setAttribute('title', window.i18next.t(key));
            });

            const loginPassword = document.getElementById('login-password');
            const loginToggle = document.getElementById('login-password-toggle');
            if (loginPassword && loginToggle && loginPassword.type === 'text') {
                const label = window.i18next.t('auth.hidePassword');
                loginToggle.setAttribute('aria-label', label);
                loginToggle.setAttribute('title', label);
            }

            // 更新页面标题
            document.title = window.i18next.t('auth.loginTitle') + ' - ' + window.i18next.t('auth.login');
        }
    </script>
</body>
</html>