@extends('layouts.admin')

@section('title', 'Chunk Review — ' . Str::limit($document->title, 40))

@section('breadcrumb')
    <li class="breadcrumb-item"><a href="{{ route('admin.documents.index') }}">Dokumen</a></li>
    <li class="breadcrumb-item"><a href="{{ route('admin.documents.show', $document) }}">{{ Str::limit($document->title, 30) }}</a></li>
    <li class="breadcrumb-item active">Chunk Review v{{ $version->version_number }}</li>
@endsection

@section('content')

{{-- Header --}}
<div class="d-flex align-items-start justify-content-between mb-3 flex-wrap gap-2">
    <div>
        <h4 class="mb-0 fw-bold">Chunk Review</h4>
        <p class="text-muted small mb-0">
            {{ $document->title }} &mdash; Versi {{ $version->version_number }}
            @if($version->page_count)
                &middot; {{ $version->page_count }} muka surat
            @endif
        </p>
    </div>
    <a href="{{ route('admin.documents.show', $document) }}" class="btn btn-sm btn-outline-secondary">
        <i class="bi bi-arrow-left me-1"></i>Kembali ke Dokumen
    </a>
</div>

{{-- Flash Messages --}}
@if(session('success'))
    <div class="alert alert-success alert-dismissible fade show py-2" role="alert">
        <i class="bi bi-check-circle me-1"></i>{{ session('success') }}
        <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
    </div>
@endif
@if(session('error'))
    <div class="alert alert-danger alert-dismissible fade show py-2" role="alert">
        <i class="bi bi-exclamation-triangle me-1"></i>{{ session('error') }}
        <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
    </div>
@endif

{{-- Status Summary Pills --}}
<div class="d-flex flex-wrap gap-2 mb-3">
    <a href="{{ route('admin.documents.chunks', ['document' => $document, 'version' => $version]) }}"
       class="btn btn-sm {{ !$statusFilter ? 'btn-dark' : 'btn-outline-dark' }}">
        Semua <span class="badge bg-secondary ms-1">{{ array_sum($statusCounts) }}</span>
    </a>

    @php
        $statusDef = [
            \App\Models\DocumentChunk::STATUS_INDEXED          => ['label' => 'Diindex',       'class' => 'btn-success'],
            \App\Models\DocumentChunk::STATUS_NEEDS_REINDEX    => ['label' => 'Perlu Reindex',  'class' => 'btn-warning'],
            \App\Models\DocumentChunk::STATUS_NEEDS_REVIEW     => ['label' => 'Perlu Semak',    'class' => 'btn-info'],
            \App\Models\DocumentChunk::STATUS_PENDING          => ['label' => 'Menunggu',       'class' => 'btn-light border'],
            \App\Models\DocumentChunk::STATUS_EXCLUDED         => ['label' => 'Dikecualikan',   'class' => 'btn-secondary'],
            \App\Models\DocumentChunk::STATUS_SUPERSEDED       => ['label' => 'Digantikan',     'class' => 'btn-dark'],
            \App\Models\DocumentChunk::STATUS_FAILED_EMBEDDING => ['label' => 'Gagal Embed',    'class' => 'btn-danger'],
        ];
    @endphp

    @foreach($statusDef as $statusKey => $def)
        @if(isset($statusCounts[$statusKey]) && $statusCounts[$statusKey] > 0)
            <a href="{{ route('admin.documents.chunks', ['document' => $document, 'version' => $version, 'status' => $statusKey]) }}"
               class="btn btn-sm {{ $statusFilter === $statusKey ? $def['class'] : 'btn-outline-' . str_replace('btn-', '', $def['class']) }}">
                {{ $def['label'] }}
                <span class="badge bg-white text-dark ms-1">{{ $statusCounts[$statusKey] }}</span>
            </a>
        @endif
    @endforeach
</div>

{{-- Chunk List --}}
@forelse($chunks as $chunk)
<div class="card border-0 shadow-sm mb-2 {{ $chunk->isSuperseded() ? 'opacity-50' : '' }}">
    <div class="card-body py-2 px-3">
        <div class="row align-items-center g-2">

            {{-- Metadata --}}
            <div class="col-12 col-md-7">
                <div class="d-flex align-items-center gap-2 flex-wrap">
                    {{-- Status badge --}}
                    <span class="badge {{ $chunk->getStatusBadgeClass() }}" style="font-size:.7rem">
                        {{ $chunk->getStatusLabel() }}
                    </span>

                    {{-- Chunk number --}}
                    <span class="badge bg-light text-dark border fw-normal" style="font-size:.7rem">
                        #{{ $chunk->chunk_index + 1 }}
                    </span>

                    {{-- Edited badge --}}
                    @if($chunk->is_edited)
                        <span class="badge bg-primary-subtle text-primary border border-primary" style="font-size:.65rem">
                            <i class="bi bi-pencil me-1"></i>Edited
                        </span>
                    @endif

                    {{-- Split badge --}}
                    @if($chunk->parent_chunk_id)
                        <span class="badge bg-warning-subtle text-warning border border-warning" style="font-size:.65rem">
                            <i class="bi bi-scissors me-1"></i>Split
                        </span>
                    @endif

                    @if($chunk->childChunks->count() > 0)
                        <span class="badge bg-dark-subtle text-dark border" style="font-size:.65rem">
                            <i class="bi bi-diagram-2 me-1"></i>{{ $chunk->childChunks->count() }} anak
                        </span>
                    @endif

                    {{-- Metadata kecil --}}
                    @if($chunk->page_number)
                        <span class="text-muted" style="font-size:.75rem">ms.{{ $chunk->page_number }}</span>
                    @endif

                    @if($chunk->section_heading)
                        <span class="text-muted text-truncate" style="font-size:.75rem;max-width:200px"
                              title="{{ $chunk->section_heading }}">
                            {{ Str::limit($chunk->section_heading, 40) }}
                        </span>
                    @endif
                </div>

                {{-- Preview teks --}}
                <p class="text-muted mb-0 mt-1" style="font-size:.8rem;line-height:1.4">
                    {{ Str::limit($chunk->getEmbeddableText(), 150) }}
                </p>

                {{-- Editor info --}}
                @if($chunk->is_edited && $chunk->editor)
                    <p class="mb-0 mt-1" style="font-size:.7rem;color:#aaa">
                        Diedit oleh {{ $chunk->editor->name }}
                        {{ $chunk->edited_at?->diffForHumans() }}
                    </p>
                @endif
            </div>

            {{-- Actions --}}
            <div class="col-12 col-md-5">
                <div class="d-flex gap-1 flex-wrap justify-content-md-end">

                    {{-- View detail --}}
                    <a href="{{ route('admin.chunks.show', $chunk) }}"
                       class="btn btn-sm btn-outline-primary">
                        <i class="bi bi-eye"></i> Detail
                    </a>

                    @if(!$chunk->isSuperseded())

                        {{-- Split --}}
                        <a href="{{ route('admin.chunks.split', $chunk) }}"
                           class="btn btn-sm btn-outline-warning"
                           title="Split chunk ini">
                            <i class="bi bi-scissors"></i>
                        </a>

                        {{-- Exclude / Include --}}
                        @if($chunk->exclude_from_index)
                            <form method="POST" action="{{ route('admin.chunks.include', $chunk) }}" class="d-inline">
                                @csrf
                                <button type="submit" class="btn btn-sm btn-outline-success"
                                        title="Kembalikan ke indexing"
                                        onclick="return confirm('Kembalikan chunk ini ke indexing?')">
                                    <i class="bi bi-check-circle"></i>
                                </button>
                            </form>
                        @else
                            <form method="POST" action="{{ route('admin.chunks.exclude', $chunk) }}" class="d-inline">
                                @csrf
                                <button type="submit" class="btn btn-sm btn-outline-secondary"
                                        title="Kecualikan dari indexing"
                                        onclick="return confirm('Kecualikan chunk #{{ $chunk->chunk_index + 1 }} dari indexing?')">
                                    <i class="bi bi-slash-circle"></i>
                                </button>
                            </form>
                        @endif

                        {{-- Reindex --}}
                        @if($chunk->isIndexable())
                            <form method="POST" action="{{ route('admin.chunks.reindex', $chunk) }}" class="d-inline">
                                @csrf
                                <button type="submit" class="btn btn-sm btn-outline-info"
                                        title="Trigger reindex"
                                        onclick="return confirm('Reindex chunk #{{ $chunk->chunk_index + 1 }} sekarang?')">
                                    <i class="bi bi-arrow-repeat"></i>
                                </button>
                            </form>
                        @endif

                    @else
                        {{-- Superseded — tunjukkan link ke children --}}
                        @if($chunk->childChunks->count() > 0)
                            <span class="text-muted small">
                                <i class="bi bi-arrow-down-right me-1"></i>
                                {{ $chunk->childChunks->count() }} chunk baharu
                            </span>
                        @endif
                    @endif

                </div>
            </div>

        </div>

        {{-- Child chunks inline (jika chunk ini pernah di-split) --}}
        @if($chunk->childChunks->count() > 0)
            <div class="mt-2 ps-3 border-start border-2 border-warning">
                <p class="text-muted mb-1" style="font-size:.72rem">
                    <i class="bi bi-diagram-2 me-1"></i>Dipecahkan kepada:
                </p>
                @foreach($chunk->childChunks as $child)
                    <div class="d-flex align-items-center gap-2 mb-1">
                        <span class="badge {{ $child->getStatusBadgeClass() }}" style="font-size:.65rem">
                            {{ $child->getStatusLabel() }}
                        </span>
                        <span class="text-muted" style="font-size:.75rem">#{{ $child->chunk_index + 1 }}</span>
                        <span class="text-muted text-truncate" style="font-size:.75rem">
                            {{ Str::limit($child->getEmbeddableText(), 80) }}
                        </span>
                        <a href="{{ route('admin.chunks.show', $child) }}"
                           class="btn btn-sm btn-link p-0 ms-auto" style="font-size:.72rem">
                            Lihat →
                        </a>
                    </div>
                @endforeach
            </div>
        @endif

    </div>
</div>
@empty
    <div class="text-center py-5 text-muted">
        <i class="bi bi-collection display-6 d-block mb-2"></i>
        @if($statusFilter)
            Tiada chunk dengan status "{{ $statusFilter }}".
            <a href="{{ route('admin.documents.chunks', ['document' => $document, 'version' => $version]) }}">
                Lihat semua
            </a>
        @else
            Tiada chunk untuk versi ini.
        @endif
    </div>
@endforelse

{{-- Pagination --}}
@if($chunks->hasPages())
    <div class="mt-3">
        {{ $chunks->links() }}
    </div>
@endif

@endsection