@extends('layouts.app')

@section('title', '周次管理（Sprint）')

@section('content')
<div class="container-fluid py-4">

    <div class="d-flex justify-content-between align-items-center mb-4">
        <h4 class="fw-bold mb-0">
            <i class="bi bi-calendar-week me-2 text-primary"></i>周次管理
        </h4>
        <a href="{{ route('sprints.create') }}" class="btn btn-primary btn-sm">
            <i class="bi bi-plus-lg me-1"></i>新增週次
        </a>
    </div>

    @if(session('success'))
        <div class="alert alert-success alert-dismissible fade show">
            {{ session('success') }}
            <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
        </div>
    @endif

    {{-- 篩選 --}}
    <div class="card border-0 shadow-sm mb-4">
        <div class="card-body p-3">
            <form method="GET" class="row g-2 align-items-end">
                <div class="col-auto">
                    <label for="filter-year" class="form-label small fw-medium mb-1">年度</label>
                    <select id="filter-year" name="year" class="form-select form-select-sm" style="width:100px">
                        @foreach($years as $y)
                            <option value="{{ $y }}" {{ $year == $y ? 'selected' : '' }}>{{ $y }}</option>
                        @endforeach
                    </select>
                </div>
                <div class="col-auto">
                    <label for="filter-status" class="form-label small fw-medium mb-1">狀態</label>
                    <select id="filter-status" name="status" class="form-select form-select-sm" style="width:120px">
                        <option value="">全部狀態</option>
                        <option value="planning"  {{ $status === 'planning'  ? 'selected' : '' }}>規劃中</option>
                        <option value="active"    {{ $status === 'active'    ? 'selected' : '' }}>進行中</option>
                        <option value="completed" {{ $status === 'completed' ? 'selected' : '' }}>已完成</option>
                        <option value="cancelled" {{ $status === 'cancelled' ? 'selected' : '' }}>已取消</option>
                    </select>
                </div>
                <div class="col-auto">
                    <button type="submit" class="btn btn-outline-primary btn-sm">
                        <i class="bi bi-funnel me-1"></i>篩選
                    </button>
                    <a href="{{ route('sprints.index') }}" class="btn btn-outline-secondary btn-sm ms-1">重置</a>
                </div>
                <div class="col-auto ms-auto align-self-end">
                    <span class="text-muted small">共 {{ $sprints->total() }} 筆</span>
                </div>
            </form>
        </div>
    </div>

    {{-- 表格 --}}
    @if($sprints->isEmpty())
        <div class="alert alert-info">
            <i class="bi bi-info-circle me-2"></i>{{ $year }} 年度尚無周次記錄。
        </div>
    @else
    <div class="card border-0 shadow-sm">
        <div class="table-responsive">
            <table class="table table-hover align-middle mb-0">
                <thead class="table-light">
                    <tr>
                        <th class="ps-3" style="width:60px">週次</th>
                        <th style="width:80px">名稱</th>
                        <th style="width:90px">狀態</th>
                        <th>期間</th>
                        <th style="width:60px">天數</th>
                        <th>人員需求</th>
                        <th style="width:80px" class="pe-3 text-end">操作</th>
                    </tr>
                </thead>
                <tbody>
                    @foreach($sprints as $sprint)
                    @php
                        $requiredUsers = is_array($sprint->required_users)
                            ? $sprint->required_users
                            : (is_string($sprint->required_users) ? json_decode($sprint->required_users, true) : []);
                        $requiredUsers = $requiredUsers ?? [];
                        $userCount = count($requiredUsers);
                        $totalManDays = collect($requiredUsers)->sum(fn($u) => (float)($u['man_days'] ?? 0));
                    @endphp
                    <tr class="{{ $sprint->status === 'active' ? 'table-primary' : '' }}">
                        <td class="ps-3 fw-medium text-muted small">
                            W{{ $sprint->week }}
                        </td>
                        <td>
                            <a href="{{ route('sprints.show', $sprint) }}"
                               class="fw-bold text-decoration-none text-dark">
                                {{ $sprint->name }}
                            </a>
                        </td>
                        <td>
                            <span class="badge rounded-pill bg-{{ $sprint->status_color }}">
                                {{ $sprint->status_label }}
                            </span>
                            @if($sprint->status === 'active')
                                <div class="text-primary small mt-1">剩 {{ $sprint->days_remaining }} 天</div>
                            @endif
                        </td>
                        <td class="small text-muted">
                            {{ $sprint->start_date->format('Y/m/d') }}
                            <span class="text-secondary mx-1">–</span>
                            {{ $sprint->end_date->format('Y/m/d') }}
                        </td>
                        <td class="small text-center text-muted">{{ $sprint->duration_days }}</td>
                        <td>
                            @if($userCount > 0)
                                <span class="badge bg-light text-dark border me-1">
                                    <i class="bi bi-people me-1"></i>{{ $userCount }} 人
                                </span>
                                <span class="text-muted small">{{ $totalManDays }} 人日</span>
                            @else
                                <span class="text-muted small">—</span>
                            @endif
                        </td>
                        <td class="pe-3 text-end">
                            <div class="btn-group btn-group-sm">
                                <a href="{{ route('sprints.show', $sprint) }}"
                                   class="btn btn-outline-secondary" title="查看">
                                    <i class="bi bi-eye"></i>
                                </a>
                                <a href="{{ route('sprints.edit', $sprint) }}"
                                   class="btn btn-outline-secondary" title="編輯">
                                    <i class="bi bi-pencil"></i>
                                </a>
                                <button type="button" class="btn btn-outline-danger" title="刪除"
                                        onclick="confirmDelete({{ $sprint->id }}, '{{ addslashes($sprint->name) }}')">
                                    <i class="bi bi-trash"></i>
                                </button>
                            </div>
                        </td>
                    </tr>
                    @endforeach
                </tbody>
            </table>
        </div>
    </div>

    <div class="mt-3">{{ $sprints->links() }}</div>
    @endif

    <p class="text-muted small mt-4 mb-0">
        <i class="bi bi-info-circle me-1"></i>
        週次由系統每週日 23:00 自動建立（預建兩週），並自動更新本週狀態為「進行中」、過期週次為「已完成」。
    </p>
</div>

{{-- 刪除確認表單 --}}
<form id="deleteForm" method="POST" style="display:none">
    @csrf @method('DELETE')
</form>

@endsection

@push('scripts')
<script>
function confirmDelete(id, name) {
    if (!confirm('確定刪除周次「' + name + '」？議題將解除關聯。')) return;
    const form = document.getElementById('deleteForm');
    form.action = '/sprints/' + id;
    form.submit();
}
</script>
@endpush