@extends('admin.layouts.app')

@section('title', '套餐管理')
@section('page_title', '套餐管理')

@section('content')
@php
    // back 参数用于“返回上一页（保留上下文）”，但 back 本身不应再包含 back（避免无限嵌套导致 URL 膨胀）
    $currentQuery = request()->query();
    unset($currentQuery['back']);
    $selfWithoutBack = '/' . ltrim(request()->path(), '/');
    if (count($currentQuery) > 0) {
        $selfWithoutBack .= '?' . \Illuminate\Support\Arr::query($currentQuery);
    }

    // 用于构建“从套餐页跳转到订阅/订单页后可返回套餐页”的链接
    $makeSubscriptionUrl = function (array $query) use ($selfWithoutBack) {
        $query = $query + ['back' => $selfWithoutBack];

        return '/admin/site-subscriptions?' . \Illuminate\Support\Arr::query($query);
    };

    $makePlatformOrderUrl = function (array $query) use ($selfWithoutBack) {
        $query = $query + ['back' => $selfWithoutBack];

        return '/admin/platform-orders?' . \Illuminate\Support\Arr::query($query);
    };

   // back 安全护栏（全页通用）：
    // - 仅允许站内相对路径（/ 开头）
    // - 拒绝引号/尖括号（由于本页大量 href 采用 `{!! !!}` 原样输出，必须严控注入风险）
    // - 拒绝 nested back=（避免 URL 膨胀/绕过）
    $incomingBack = (string) request()->query('back', '');
    $safeBackForLinks = \App\Support\BackUrl::sanitizeForLinks($incomingBack);
@endphp
<div class="card mb-20">
    <p class="muted muted-tight">这里是总台视角的套餐目录页，用于沉淀平台可售卖的标准能力包。</p>
    <p class="muted">当前阶段先完成套餐主数据可见、可筛与口径收拢，后续再接授权项、售价规则与上下架动作。</p>

    @if($safeBackForLinks !== '')
        <div class="mt-10">
            <a href="{!! $safeBackForLinks !!}" class="muted">← 返回上一页（保留上下文）</a>
        </div>
    @endif
</div>

<div class="card mb-20">
    <h3>快捷筛选</h3>
    <div class="muted mb-10">用于运营快速定位需要处理的套餐集合（口径基于筛选条件组合）。</div>

    @php
        // 快捷筛选：仅保留“上下文”字段（back/keyword），避免把其它筛选条件叠加导致空结果
        $buildQuickFilterUrl = function (array $overrides) use ($safeBackForLinks) {
            return \App\Support\BackUrl::currentPathQuickFilter(['keyword'], $overrides, $safeBackForLinks);
        };

        // “全部”：清空筛选，但保留安全 back（用于返回来源页）
        $allUrl = \App\Support\BackUrl::withBack('/admin/plans', $safeBackForLinks);
    @endphp

    <div>
        <a href="{!! $allUrl !!}" class="muted">全部</a>
        <span class="muted">｜</span>
        <a href="{!! $buildQuickFilterUrl(['status' => 'active']) !!}" class="muted">启用中</a>
        <span class="muted">｜</span>
        <a href="{!! $buildQuickFilterUrl(['status' => 'inactive']) !!}" class="muted">停用</a>
        <span class="muted">｜</span>
        <a href="{!! $buildQuickFilterUrl(['published' => 'published']) !!}" class="muted">已发布</a>
        <span class="muted">｜</span>
        <a href="{!! $buildQuickFilterUrl(['published' => 'unpublished']) !!}" class="muted">未发布</a>
        <span class="muted">｜</span>
        <a href="{!! $buildQuickFilterUrl(['billing_cycle' => 'monthly']) !!}" class="muted">月付</a>
        <span class="muted">｜</span>
        <a href="{!! $buildQuickFilterUrl(['billing_cycle' => 'yearly']) !!}" class="muted">年付</a>
    </div>
</div>

<div class="card mb-20">
    <h3>工具</h3>
    <div class="grid-2">
        <form method="get" action="/admin/plans/export">
            <input type="hidden" name="download" value="1">
            <input type="hidden" name="status" value="{{ $filters['status'] ?? '' }}">
            <input type="hidden" name="published" value="{{ $filters['published'] ?? '' }}">
            <input type="hidden" name="billing_cycle" value="{{ $filters['billing_cycle'] ?? '' }}">
            <input type="hidden" name="keyword" value="{{ $filters['keyword'] ?? '' }}">
            <button class="btn btn-secondary btn-sm" type="submit">导出当前筛选结果（CSV）</button>
        </form>

        <form method="post" action="/admin/plans/seed-defaults" onsubmit="return confirm('仅在当前没有任何套餐时才会初始化。确认执行吗？');" class="actions gap-10">
            @csrf
            <button class="btn btn-sm" type="submit">一键初始化默认套餐（空库）</button>
            <div class="muted muted-xs mt-6">安全护栏：当库中已存在套餐时会自动阻止，避免污染运营数据。</div>
        </form>
    </div>
</div>

<div class="card mb-20">
    <h3>筛选条件</h3>
    <form method="get" action="/admin/plans" class="grid-3">
        @if($safeBackForLinks !== '')
            <input type="hidden" name="back" value="{!! $safeBackForLinks !!}">
        @endif
        <select name="status">
            <option value="">全部状态</option>
            @foreach(($filterOptions['statuses'] ?? []) as $value => $label)
                <option value="{{ $value }}" @selected(($filters['status'] ?? '') === $value)>{{ $label }}</option>
            @endforeach
        </select>
        <select name="published">
            <option value="">全部发布状态</option>
            <option value="published" @selected(($filters['published'] ?? '') === 'published')>已发布</option>
            <option value="unpublished" @selected(($filters['published'] ?? '') === 'unpublished')>未发布</option>
        </select>
        <select name="billing_cycle">
            <option value="">全部计费周期</option>
            @foreach(($filterOptions['billingCycles'] ?? []) as $value => $label)
                <option value="{{ $value }}" @selected(($filters['billing_cycle'] ?? '') === $value)>{{ $label }}</option>
            @endforeach
        </select>
        <input name="keyword" placeholder="搜索套餐名称 / 编码 / 描述" value="{{ $filters['keyword'] ?? '' }}">
        <div>
            <button class="btn btn-sm" type="submit">应用筛选</button>
        </div>
    </form>
</div>

<div class="grid-4 mb-20">
    <div class="card">
        <h3>套餐总数</h3>
        <div class="num-md">{{ $summaryStats['total_plans'] ?? 0 }}</div>
    </div>
    <div class="card">
        <h3>启用中套餐</h3>
        <div class="num-md">{{ $summaryStats['active_plans'] ?? 0 }}</div>
    </div>
    <div class="card">
        <h3>月付套餐</h3>
        <div class="num-md">{{ $summaryStats['monthly_plans'] ?? 0 }}</div>
    </div>
    <div class="card">
        <h3>年付套餐</h3>
        <div class="num-md">{{ $summaryStats['yearly_plans'] ?? 0 }}</div>
    </div>
    <div class="card">
        <h3>关联订阅总量</h3>
        <div class="num-md">{{ $summaryStats['subscriptions_count'] ?? 0 }}</div>
    </div>
    <div class="card">
        <h3>关联平台订单总量</h3>
        <div class="num-md">{{ $summaryStats['platform_orders_count'] ?? 0 }}</div>
    </div>
</div>

<div class="card">
    <div class="flex-between">
        <div>
            <h3>套餐列表</h3>
            <p class="muted muted-xs">后续将从这里进入套餐详情、授权项与订阅联动。</p>
        </div>
        @php
            $createPlanUrl = '/admin/plans/create?' . \Illuminate\Support\Arr::query(['back' => $selfWithoutBack]);
        @endphp
        <a href="{!! $createPlanUrl !!}" class="btn btn-sm">新建套餐</a>
    </div>
    <table>
        <thead>
        <tr>
            <th>ID</th>
            <th>套餐名称</th>
            <th>编码</th>
            <th>计费周期</th>
            <th>售价</th>
            <th>划线价</th>
            <th>状态</th>
            <th>排序</th>
            <th>发布时间</th>
            <th>关联订阅</th>
            <th>关联平台订单</th>
            <th>操作</th>
        </tr>
        </thead>
        <tbody>
        @forelse($plans as $plan)
            <tr>
                <td>{{ $plan->id }}</td>
                <td>
                    <strong>{{ $plan->name }}</strong>
                    <div class="muted muted-xs">{{ $plan->description ?: '暂无说明' }}</div>
                </td>
                <td>{{ $plan->code }}</td>
                <td>{{ $billingCycleLabels[$plan->billing_cycle] ?? $plan->billing_cycle }}</td>
                <td>¥{{ number_format((float) $plan->price, 2) }}</td>
                <td>¥{{ number_format((float) $plan->list_price, 2) }}</td>
                <td>{{ $statusLabels[$plan->status] ?? $plan->status }}</td>
                <td>{{ $plan->sort }}</td>
                <td>{{ optional($plan->published_at)->format('Y-m-d H:i:s') ?: '-' }}</td>
                <td>
                    @php $subCount = (int) ($plan->subscriptions_count ?? 0); @endphp
                    @if($subCount > 0)
                        <a class="link" href="{!! $makeSubscriptionUrl(['plan_id' => $plan->id]) !!}">{{ $subCount }} 个</a>
                    @else
                        <span class="muted">0</span>
                    @endif
                </td>
                <td>
                    @php $orderCount = (int) ($plan->platform_orders_count ?? 0); @endphp
                    @if($orderCount > 0)
                        <a class="link" href="{!! $makePlatformOrderUrl(['plan_id' => $plan->id]) !!}">{{ $orderCount }} 单</a>
                    @else
                        <span class="muted">0</span>
                    @endif
                </td>
                <td>
                    @php
                        $editPlanUrl = '/admin/plans/' . $plan->id . '/edit?' . \Illuminate\Support\Arr::query(['back' => $selfWithoutBack]);
                        $createOrderUrl = '/admin/platform-orders/create?' . \Illuminate\Support\Arr::query([
                            'plan_id' => $plan->id,
                            'order_type' => 'new_purchase',
                            'back' => $selfWithoutBack,
                        ]);
                    @endphp
                    <div class="actions gap-10">
                        <a href="{!! $editPlanUrl !!}" class="btn btn-secondary btn-sm">编辑</a>
                        <a href="{!! $createOrderUrl !!}" class="btn btn-sm">创建订单</a>
                    </div>

                    <form method="post" action="/admin/plans/{{ $plan->id }}/set-status" class="mt-6 actions gap-10">
                        @csrf
                        <select name="status" onchange="this.form.submit()" class="w-140">
                            @foreach(($filterOptions['statuses'] ?? []) as $value => $label)
                                <option value="{{ $value }}" @selected($plan->status === $value)>{{ $label }}</option>
                            @endforeach
                        </select>
                        <noscript><button type="submit" class="btn btn-secondary btn-sm">更新状态</button></noscript>
                    </form>
                </td>
            </tr>
        @empty
            <tr>
                <td colspan="12" class="muted">暂无套餐数据，当前阶段先把套餐主表与总台目录立起来，后续可继续接套餐创建、授权项与订阅关联。</td>
            </tr>
        @endforelse
        </tbody>
    </table>
</div>

<div class="pagination-wrap">{{ $plans->links() }}</div>
@endsection