{% extends "base.html" %}

{% block title %}用户注册{% endblock %}

{% block content %}
<div class="row justify-content-center mt-5">
    <div class="col-md-6 col-lg-5">
        <div class="card border-0 shadow-sm">
            <div class="card-header bg-light">
                <h4 class="card-title mb-0">
                    <i class="fas fa-user-plus text-primary me-2"></i>用户注册
                </h4>
            </div>
            <div class="card-body">
                <form method="POST" action="{{ url_for('register') }}" id="registerForm">
                    <div class="mb-3">
                        <label for="username" class="form-label">
                            <i class="fas fa-user me-1 text-muted"></i>用户名
                        </label>
                        <input type="text" class="form-control" id="username" name="username" required
                               pattern="[a-zA-Z0-9_]{4,20}"
                               title="4-20位字母、数字或下划线">
                        <small class="form-text text-muted">4-20位字母、数字或下划线</small>
                    </div>

                    <div class="mb-3">
                        <label for="password" class="form-label">
                            <i class="fas fa-lock me-1 text-muted"></i>密码
                        </label>
                        <input type="password" class="form-control" id="password" name="password" required
                               minlength="{{ config.PASSWORD_POLICY.min_length }}"
                               pattern="{% if config.PASSWORD_POLICY.require_uppercase %}(?=.*[A-Z]){% endif %}
                                      {% if config.PASSWORD_POLICY.require_lowercase %}(?=.*[a-z]){% endif %}
                                      {% if config.PASSWORD_POLICY.require_digits %}(?=.*\d]){% endif %}
                                      {% if config.PASSWORD_POLICY.require_special_chars %}(?=.*[!@#$%^&*]){% endif %}.*"
                               title="{% if config.PASSWORD_POLICY.require_uppercase %}必须包含大写字母{% endif %}
                                     {% if config.PASSWORD_POLICY.require_lowercase %}必须包含小写字母{% endif %}
                                     {% if config.PASSWORD_POLICY.require_digits %}必须包含数字{% endif %}
                                     {% if config.PASSWORD_POLICY.require_special_chars %}必须包含特殊字符{% endif %}">
                        <small class="form-text text-muted">
                            密码要求：至少{{ config.PASSWORD_POLICY.min_length }}位
                            {% if config.PASSWORD_POLICY.require_uppercase %}，包含大写字母{% endif %}
                            {% if config.PASSWORD_POLICY.require_lowercase %}，包含小写字母{% endif %}
                            {% if config.PASSWORD_POLICY.require_digits %}，包含数字{% endif %}
                            {% if config.PASSWORD_POLICY.require_special_chars %}，包含特殊字符(!@#$%^&*){% endif %}
                        </small>
                    </div>

                    <div class="mb-3">
                        <label for="confirm_password" class="form-label">
                            <i class="fas fa-lock me-1 text-muted"></i>确认密码
                        </label>
                        <input type="password" class="form-control" id="confirm_password"
                               name="confirm_password" required
                               oninput="checkPasswordMatch()">
                        <small id="passwordMatchError" class="text-danger d-none">两次输入的密码不一致</small>
                    </div>

                    {% if config.EMAIL_VERIFICATION_REQUIRED %}
                    <div class="mb-3">
                        <label for="email" class="form-label">
                            <i class="fas fa-envelope me-1 text-muted"></i>邮箱
                        </label>
                        <input type="email" class="form-control" id="email" name="email" required
                               placeholder="example@domain.com">
                        <small class="form-text text-muted">用于接收验证邮件</small>
                    </div>
                    {% else %}
                    <div class="mb-3">
                        <label for="email" class="form-label">
                            <i class="fas fa-envelope me-1 text-muted"></i>邮箱（可选）
                        </label>
                        <input type="email" class="form-control" id="email" name="email"
                               placeholder="example@domain.com">
                    </div>
                    {% endif %}

                    <div class="mb-4">
                        <label for="captcha" class="form-label">
                            <i class="fas fa-shield-alt me-1 text-muted"></i>验证码
                        </label>
                        <div class="input-group">
                            <input type="text" class="form-control" id="captcha" name="captcha" required
                                   placeholder="请输入验证码">
                            <img src="{{ url_for('captcha') }}" id="captcha-image"
                                 class="img-thumbnail bg-light"
                                 style="cursor: pointer; width: 100px; height: 38px;"
                                 onclick="refreshCaptcha()"
                                 title="点击刷新验证码">
                        </div>
                    </div>

                    <div class="d-grid gap-2">
                        <button type="submit" class="btn btn-primary">
                            <i class="fas fa-user-plus me-1"></i> 注册
                        </button>
                        <a href="{{ url_for('login') }}" class="btn btn-link text-decoration-none">
                            已有账号？去登录
                        </a>
                    </div>
                </form>
            </div>
        </div>
    </div>
</div>

<script>
function refreshCaptcha() {
    document.getElementById('captcha-image').src = "{{ url_for('captcha') }}?" + Date.now();
}

function checkPasswordMatch() {
    const password = document.getElementById('password');
    const confirmPassword = document.getElementById('confirm_password');
    const errorElement = document.getElementById('passwordMatchError');

    if (password.value !== confirmPassword.value) {
        errorElement.classList.remove('d-none');
        confirmPassword.setCustomValidity("密码不匹配");
    } else {
        errorElement.classList.add('d-none');
        confirmPassword.setCustomValidity("");
    }
}

// 实时验证密码复杂度
document.getElementById('password').addEventListener('input', function() {
    const password = this.value;
    const policy = {
        minLength: {{ config.PASSWORD_POLICY.min_length }},
        requireUpper: {{ config.PASSWORD_POLICY.require_uppercase|lower }},
        requireLower: {{ config.PASSWORD_POLICY.require_lowercase|lower }},
        requireDigit: {{ config.PASSWORD_POLICY.require_digits|lower }},
        requireSpecial: {{ config.PASSWORD_POLICY.require_special_chars|lower }}
    };

    // 可以在这里添加更复杂的实时验证逻辑
});
</script>
{% endblock %}