@extends('layouts.admin')

@section('title', $document->title)

@section('breadcrumb')
    <li class="breadcrumb-item"><a href="{{ route('admin.documents.index') }}">Dokumen</a></li>
    <li class="breadcrumb-item active">{{ Str::limit($document->title, 40) }}</li>
@endsection

@section('content')
<div class="d-flex align-items-start justify-content-between mb-4">
    <div>
        <h4 class="mb-1 fw-bold">{{ $document->title }}</h4>
        <div class="d-flex gap-2 align-items-center flex-wrap">
            <span class="badge" style="background:{{ $document->category->color }}">{{ $document->category->name }}</span>
            @php
                $statusMap = [
                    'active'     => 'bg-success',
                    'inactive'   => 'bg-secondary',
                    'processing' => 'bg-warning',
                    'failed'     => 'bg-danger',
                ];
            @endphp
            <span class="badge {{ $statusMap[$document->status] ?? 'bg-light text-dark' }}">{{ ucfirst($document->status) }}</span>
            @if($document->effective_date)
                <small class="text-muted">Kuat kuasa: {{ $document->effective_date->format('d/m/Y') }}</small>
            @endif
        </div>
    </div>
    <div class="d-flex gap-2">
        <a href="{{ route('admin.documents.edit', $document) }}" class="btn btn-outline-secondary btn-sm">
            <i class="bi bi-pencil me-1"></i>Edit
        </a>
        @if(auth()->user()->isAdmin())
        <form method="POST" action="{{ route('admin.documents.reindex', $document) }}">
            @csrf
            <button type="submit" class="btn btn-outline-info btn-sm"
                    onclick="return confirm('Adakah anda pasti untuk reindex dokumen ini?')">
                <i class="bi bi-arrow-repeat me-1"></i>Reindex
            </button>
        </form>
        @endif
        <form method="POST" action="{{ route('admin.documents.toggle-status', $document) }}">
            @csrf @method('PATCH')
            <button type="submit" class="btn btn-sm {{ $document->is_active ? 'btn-warning' : 'btn-success' }}">
                @if($document->is_active)
                    <i class="bi bi-pause-circle me-1"></i>Nyahaktif
                @else
                    <i class="bi bi-play-circle me-1"></i>Aktifkan
                @endif
            </button>
        </form>
    </div>
</div>

<div class="row g-4">
    {{-- Info Dokumen --}}
    <div class="col-lg-4">
        <div class="card border-0 shadow-sm mb-3">
            <div class="card-header bg-white border-bottom"><h6 class="mb-0 fw-semibold">Maklumat Dokumen</h6></div>
            <div class="card-body small">
                @if($document->description)
                <p>{{ $document->description }}</p>
                @endif
                <dl class="row mb-0">
                    <dt class="col-5 text-muted">Bahasa</dt>
                    <dd class="col-7">{{ $document->language == 'ms' ? 'Bahasa Melayu' : 'English' }}</dd>
                    @if($document->expiry_date)
                    <dt class="col-5 text-muted">Tarikh Luput</dt>
                    <dd class="col-7">{{ $document->expiry_date->format('d/m/Y') }}</dd>
                    @endif
                    <dt class="col-5 text-muted">Dicipta</dt>
                    <dd class="col-7">{{ $document->created_at->format('d/m/Y H:i') }}</dd>
                </dl>
                @if($document->tags)
                <div class="mt-2">
                    @foreach($document->tags as $tag)
                        <span class="badge bg-light text-dark border me-1">{{ $tag }}</span>
                    @endforeach
                </div>
                @endif
            </div>
        </div>

        {{-- Upload versi baru --}}
        <div class="card border-0 shadow-sm">
            <div class="card-header bg-white border-bottom">
                <h6 class="mb-0 fw-semibold">Upload Versi Baru</h6>
            </div>
            <div class="card-body">
                <form method="POST" action="{{ route('admin.documents.upload-version', $document) }}" enctype="multipart/form-data">
                    @csrf
                    <div class="mb-2">
                        <input type="file" name="file" class="form-control form-control-sm" accept=".pdf" required>
                    </div>
                    <div class="mb-2">
                        <input type="text" name="change_notes" class="form-control form-control-sm"
                               placeholder="Nota perubahan (optional)">
                    </div>
                    <button type="submit" class="btn btn-sm btn-primary w-100">
                        <i class="bi bi-upload me-1"></i>Upload Versi Baru
                    </button>
                </form>
                <small class="text-muted mt-1 d-block">Versi lama tidak akan dipadam.</small>
            </div>
        </div>
    </div>

    {{-- Senarai Versi --}}
    <div class="col-lg-8">
        <div class="card border-0 shadow-sm mb-3">
            <div class="card-header bg-white border-bottom">
                <h6 class="mb-0 fw-semibold">Sejarah Versi</h6>
            </div>
            <div class="table-responsive">
                <table class="table table-sm table-hover align-middle mb-0">
                    <thead class="table-light">
                        <tr>
                            <th class="ps-3">Versi</th>
                            <th>Fail</th>
                            <th>Status</th>
                            <th>Diupload</th>
                            <th class="text-end pe-3">Tindakan</th>
                        </tr>
                    </thead>
                    <tbody>
                        @foreach($document->versions->sortByDesc('version_number') as $version)
                        <tr class="{{ $version->is_current ? 'table-primary' : '' }}">
                            <td class="ps-3">
                                <span class="badge bg-light text-dark border">v{{ $version->version_number }}</span>
                                @if($version->is_current)
                                    <span class="badge bg-success-subtle text-success border border-success ms-1">Semasa</span>
                                @endif
                            </td>
                            <td>
                                <div class="small">{{ $version->original_filename }}</div>
                                <small class="text-muted">{{ $version->file_size_formatted }}</small>
                                @if($version->page_count)
                                    <small class="text-muted"> · {{ $version->page_count }} ms.</small>
                                @endif
                            </td>
                            <td>
                                @php
                                    $ps = [
                                        'indexed'            => ['bg-success', 'Selesai'],
                                        'processing'         => ['bg-warning', 'Diproses'],
                                        'embedding'          => ['bg-warning', 'Embedding'],
                                        'extraction_failed'  => ['bg-danger', 'Gagal Extract'],
                                        'failed'             => ['bg-danger', 'Gagal'],
                                        'pending'            => ['bg-secondary', 'Menunggu'],
                                    ];
                                    $pInfo = $ps[$version->processing_status] ?? ['bg-light text-dark', $version->processing_status];
                                @endphp
                                <span class="badge {{ $pInfo[0] }}">{{ $pInfo[1] }}</span>
                                @if($version->hasFailed() && $version->processing_error)
                                    <br><small class="text-danger d-block" style="max-width:200px"
                                               title="{{ $version->processing_error }}">
                                        {{ Str::limit($version->processing_error, 50) }}
                                    </small>
                                @endif
                            </td>
                            <td>
                                <small>{{ $version->created_at->format('d/m/Y') }}</small>
                                @if($version->uploader)
                                    <br><small class="text-muted">{{ $version->uploader->name }}</small>
                                @endif
                            </td>
                            <td class="text-end pe-3">
                                @if($version->processing_status === 'indexed')
                                    <a href="{{ route('admin.documents.chunks', [$document, $version]) }}"
                                       class="btn btn-sm btn-outline-secondary"
                                       title="Lihat Chunk">
                                        <i class="bi bi-list-ul"></i>
                                    </a>
                                @endif
                                <a href="{{ route('admin.documents.download', [$document, $version]) }}"
                                   class="btn btn-sm btn-outline-primary" title="Muat Turun">
                                    <i class="bi bi-download"></i>
                                </a>
                            </td>
                        </tr>
                        @endforeach
                    </tbody>
                </table>
            </div>
        </div>

        {{-- Preview Chunks (versi semasa) --}}
        @if($document->currentVersion && $document->currentVersion->processing_status === 'indexed')
        <div class="card border-0 shadow-sm">
            <div class="card-header bg-white border-bottom d-flex align-items-center justify-content-between">
                <h6 class="mb-0 fw-semibold">Chunk Terkini ({{ $document->currentVersion->chunks->count() }} preview)</h6>
                <a href="{{ route('admin.documents.chunks', [$document, $document->currentVersion]) }}"
                   class="btn btn-sm btn-link p-0 text-muted">Lihat semua</a>
            </div>
            <div class="list-group list-group-flush">
                @foreach($document->currentVersion->chunks->take(5) as $chunk)
                <div class="list-group-item py-2 px-3">
                    <div class="d-flex align-items-center gap-2 mb-1">
                        <span class="badge bg-light text-dark border" style="font-size:.65rem">
                            Chunk #{{ $chunk->chunk_index + 1 }}
                        </span>
                        @if($chunk->page_number)
                            <span class="badge bg-light text-dark border" style="font-size:.65rem">
                                ms. {{ $chunk->page_number }}
                            </span>
                        @endif
                        @if($chunk->section_heading)
                            <span class="text-muted small text-truncate">{{ $chunk->section_heading }}</span>
                        @endif
                        <span class="badge {{ $chunk->is_embedded ? 'bg-success-subtle text-success' : 'bg-warning-subtle text-warning' }} ms-auto" style="font-size:.65rem">
                            {{ $chunk->is_embedded ? 'Embedded' : 'Belum Embed' }}
                        </span>
                    </div>
                    <p class="mb-0 small text-muted" style="white-space:pre-wrap">{{ Str::limit($chunk->content, 200) }}</p>
                </div>
                @endforeach
            </div>
        </div>
        @endif
    </div>
</div>
@endsection