{% extends "base.html" %}
{% block title %}邀请码管理 - 星笺{% endblock %}
{% block content %}
<div class="section-header">
    <h1>邀请码管理</h1>
</div>

{% if success %}
<div class="alert alert-success">{{ success }}</div>
{% endif %}
{% if error %}
<div class="alert alert-error">{{ error }}</div>
{% endif %}

<!-- Add new code -->
<div style="margin-bottom:2rem;padding:1.5rem;background:var(--card-bg);border-radius:var(--radius);border:1px solid var(--border)">
    <h3 style="margin-bottom:1rem;font-size:1rem">创建邀请码</h3>
    <form method="post" action="/admin/invites/add" class="admin-invite-form" style="flex-direction:column;gap:.85rem">
        <div class="aif-row">
            <label class="aif-label">邀请码（留空自动生成）</label>
            <input type="text" name="code" maxlength="8" placeholder="自动生成" class="aif-input" style="text-transform:uppercase">
        </div>
        <div class="aif-row">
            <label class="aif-label">限制类型</label>
            <select name="limit_type" id="limit_type" onchange="toggleLimitFields()" class="aif-select">
                <option value="unlimited">无限制</option>
                <option value="uses">使用次数</option>
                <option value="expires">有效期</option>
            </select>
        </div>
        <div class="aif-row" id="max_uses_field" style="display:none">
            <label class="aif-label">最大使用次数</label>
            <input type="number" name="max_uses" min="1" value="1" class="aif-input">
        </div>
        <div class="aif-row" id="expires_field" style="display:none">
            <label class="aif-label">过期时间</label>
            <input type="datetime-local" name="expires_at" class="aif-input">
        </div>
        <div class="aif-row" style="margin-top:.35rem">
            <button type="submit" class="btn btn-primary" style="width:fit-content">创建</button>
        </div>
    </form>
</div>

<!-- Invite code list -->
{% if codes %}
<div class="postcard-list">
{% for c in codes %}
    <div class="postcard-row" style="flex-direction:column;align-items:stretch;gap:.75rem">
        <div style="display:flex;align-items:center;gap:1rem;flex-wrap:wrap">
            <strong style="font-family:monospace;font-size:1.1rem">{{ c.code }}</strong>
            <span style="font-size:.8rem;color:var(--text-muted)">创建者: {{ c.creator.username if c.creator else '-' }}</span>
            <span style="font-size:.8rem;color:var(--text-muted)">{{ c.created_at|to_local|strftime('%Y-%m-%d %H:%M') }}</span>
            {% if c.max_uses is not none %}
                <span class="badge">已用 {{ c.use_count }} / {{ c.max_uses }}</span>
            {% else %}
                <span class="badge">已用 {{ c.use_count }} / ∞</span>
            {% endif %}
            {% if c.expires_at %}
                <span class="badge">过期: {{ c.expires_at|to_local|strftime('%Y-%m-%d %H:%M') }}</span>
            {% else %}
                <span class="badge">永不过期</span>
            {% endif %}
        </div>
        <form method="post" action="/admin/invites/{{ c.id }}/edit" class="admin-invite-form" id="edit-form-{{ c.id }}">
            <div class="aif-field">
                <select name="limit_type" class="aif-select" onchange="toggleEditFields({{ c.id }}, this.value)">
                    <option value="unlimited"{% if c.max_uses is none and not c.expires_at %} selected{% endif %}>无限制</option>
                    <option value="uses"{% if c.max_uses is not none %} selected{% endif %}>次数限制</option>
                    <option value="expires"{% if c.expires_at %} selected{% endif %}>有效期</option>
                </select>
            </div>
            <div class="aif-field aif-edit-num" style="display:{% if c.max_uses is not none %}flex{% else %}none{% endif %}">
                <input type="number" name="max_uses" value="{{ c.max_uses or 1 }}" min="1" class="aif-input aif-short">
            </div>
            <div class="aif-field aif-edit-date" style="display:{% if c.expires_at %}flex{% else %}none{% endif %}">
                <input type="datetime-local" name="expires_at" value="{{ c.expires_at|to_local|strftime('%Y-%m-%dT%H:%M') if c.expires_at else '' }}" class="aif-input aif-date">
            </div>
            <div class="aif-field aif-btn-wrap">
                <span class="aif-label" style="visibility:hidden">.</span>
                <div style="display:flex;gap:.4rem">
                    <button type="submit" class="btn btn-sm">保存</button>
                    <button type="button" class="btn btn-danger btn-sm" onclick="if(confirm('确定删除？'))this.closest('form').nextElementSibling.submit()">删除</button>
                </div>
            </div>
        </form>
        <form method="post" action="/admin/invites/{{ c.id }}/delete" style="display:none"></form>
    </div>
{% endfor %}
</div>
{% else %}
<div class="empty-state">
    <div class="empty-icon">🔑</div>
    <p>暂无邀请码</p>
</div>
{% endif %}

<script>
function toggleLimitFields() {
    var t = document.getElementById('limit_type').value;
    document.getElementById('max_uses_field').style.display = t === 'uses' ? 'flex' : 'none';
    document.getElementById('expires_field').style.display = t === 'expires' ? 'flex' : 'none';
}
function toggleEditFields(id, val) {
    var form = document.getElementById('edit-form-' + id);
    form.querySelector('.aif-edit-num').style.display = val === 'uses' ? 'flex' : 'none';
    form.querySelector('.aif-edit-date').style.display = val === 'expires' ? 'flex' : 'none';
}
</script>
{% endblock %}