{% extends "base.html" %}
{% block title %}{{ 'admin.title'|t(user.language) }} - {{ 'brand'|t(user.language) }}{% endblock %}
{% block content %}
<div class="section-header">
    <h1>{{ 'admin.title'|t(user.language) }}</h1>
</div>

<div class="tabs" id="tabs">
    <button class="tab {% if active_tab != 'config' %}active{% endif %}" onclick="switchTab('invites')">{{ 'admin.tab_invites'|t(user.language) }}</button>
    <button class="tab {% if active_tab == 'config' %}active{% endif %}" onclick="switchTab('config')">{{ 'admin.tab_config'|t(user.language) }}</button>
</div>

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

<!-- ═══ Tab: Invites ═══ -->
<div id="tab-invites" class="tab-panel" {% if active_tab == 'config' %}style="display:none"{% endif %}>
<div class="form-card" style="margin-bottom:1.5rem">
    <h3 style="margin-bottom:.75rem">{{ 'invites.create'|t(user.language) }}</h3>
    <form method="post" action="/admin/invites/add" style="display:flex;flex-direction:column;gap:.85rem">
        <div>
            <label style="margin-top:0">{{ 'invites.code_label'|t(user.language) }}</label>
            <input type="text" name="code" maxlength="8" placeholder="{{ 'invites.code_ph'|t(user.language) }}" style="text-transform:uppercase">
        </div>
        <div>
            <label style="margin-top:0">{{ 'invites.limit_type'|t(user.language) }}</label>
            <select name="limit_type" id="limit_type" onchange="toggleLimitFields()">
                <option value="unlimited">{{ 'invites.unlimited'|t(user.language) }}</option>
                <option value="uses">{{ 'invites.uses'|t(user.language) }}</option>
                <option value="expires">{{ 'invites.expires'|t(user.language) }}</option>
            </select>
        </div>
        <div id="max_uses_field" style="display:none;align-items:center;gap:.3rem">
            <label style="margin:0;font-size:.8rem;white-space:nowrap">{{ 'invites.times'|t(user.language) }}</label>
            <input type="number" name="max_uses" min="1" value="1" class="aif-input aif-short">
        </div>
        <div id="expires_field" style="display:none;align-items:center;gap:.3rem">
            <label style="margin:0;font-size:.8rem;white-space:nowrap">{{ 'invites.expires'|t(user.language) }}</label>
            <input type="datetime-local" name="expires_at" class="aif-input aif-date">
        </div>
        <div class="form-actions">
            <button type="submit" class="btn btn-primary">{{ 'invites.create_btn'|t(user.language) }}</button>
        </div>
    </form>
</div>

{% 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)">{{ 'invites.creator'|t(user.language) }}: {{ 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">{{ 'invites.used'|t(user.language) }} {{ c.use_count }} / {{ c.max_uses }}</span>
            {% else %}
                <span class="badge">{{ 'invites.used'|t(user.language) }} {{ c.use_count }} / ∞</span>
            {% endif %}
            {% if c.expires_at %}
                <span class="badge">{{ 'invites.expires_at'|t(user.language) }}: {{ c.expires_at|to_local|strftime('%Y-%m-%d %H:%M') }}</span>
            {% else %}
                <span class="badge">{{ 'invites.no_expire'|t(user.language) }}</span>
            {% endif %}
        </div>
        {% if c.registered_users %}
        <div style="font-size:.8rem;color:var(--text-muted)">{{ 'invites.registered_users'|t(user.language) }}: {{ c.registered_users|map(attribute='username')|join(', ') }}</div>
        {% endif %}
        <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 %}>{{ 'invites.unlimited'|t(user.language) }}</option>
                    <option value="uses"{% if c.max_uses is not none %} selected{% endif %}>{{ 'invites.uses'|t(user.language) }}</option>
                    <option value="expires"{% if c.expires_at %} selected{% endif %}>{{ 'invites.expires'|t(user.language) }}</option>
                </select>
            </div>
            <div style="display:{% if c.max_uses is not none %}inline-flex{% else %}none{% endif %};align-items:center;gap:.3rem;align-self:flex-end">
                <label style="margin:0;font-size:.8rem;white-space:nowrap">{{ 'invites.times'|t(user.language) }}</label>
                <input type="number" name="max_uses" value="{{ c.max_uses or 1 }}" min="1" class="aif-input aif-short">
            </div>
            <div style="display:{% if c.expires_at %}inline-flex{% else %}none{% endif %};align-items:center;gap:.3rem;align-self:flex-end">
                <label style="margin:0;font-size:.8rem;white-space:nowrap">{{ 'invites.expires'|t(user.language) }}</label>
                <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 style="display:flex;gap:.4rem;align-self:flex-end">
                <button type="submit" class="btn btn-sm">{{ 'invites.save'|t(user.language) }}</button>
                <button type="button" class="btn btn-danger btn-sm" onclick="if(confirm('{{ 'invites.confirm_delete'|t(user.language) }}'))this.closest('form').nextElementSibling.submit()">{{ 'invites.delete'|t(user.language) }}</button>
            </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>{{ 'invites.empty'|t(user.language) }}</p>
</div>
{% endif %}
</div>

<!-- ═══ Tab: System Config ═══ -->
<div id="tab-config" class="tab-panel" {% if active_tab != 'config' %}style="display:none"{% endif %}>
<div class="form-card">
    <h3 style="margin-bottom:.75rem">{{ 'admin.config_title'|t(user.language) }}</h3>
    <form method="post" action="/admin/config">
        <label>{{ 'admin.copyright_label'|t(user.language) }}</label>
        <textarea name="copyright_text" rows="3" style="width:100%;resize:vertical">{{ config.get('copyright_text', '') }}</textarea>
        <p style="font-size:.8rem;color:var(--text-muted);margin-top:.25rem">{{ 'admin.copyright_hint'|t(user.language) }}</p>
        <div class="form-actions">
            <button type="submit" class="btn btn-primary">{{ 'admin.save_config'|t(user.language) }}</button>
        </div>
    </form>
</div>
</div>

<script>
function switchTab(name) {
    document.querySelectorAll('.tab').forEach(function(t) { t.classList.remove('active'); });
    document.querySelectorAll('.tab-panel').forEach(function(p) { p.style.display = 'none'; });
    event.currentTarget.classList.add('active');
    document.getElementById('tab-' + name).style.display = '';
}
function toggleLimitFields() {
    var t = document.getElementById('limit_type').value;
    document.getElementById('max_uses_field').style.display = t === 'uses' ? 'inline-flex' : 'none';
    document.getElementById('expires_field').style.display = t === 'expires' ? 'inline-flex' : 'none';
}
function toggleEditFields(id, val) {
    var form = document.getElementById('edit-form-' + id);
    var num = form.querySelector('[name="max_uses"]').parentElement;
    var date = form.querySelector('[name="expires_at"]').parentElement;
    num.style.display = val === 'uses' ? 'inline-flex' : 'none';
    date.style.display = val === 'expires' ? 'inline-flex' : 'none';
}
</script>
{% endblock %}