<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Models\Category;
use App\Models\ChatFeedback;
use App\Models\ChatLog;
use App\Models\KnowledgeItem;
use App\Services\KnowledgeBase\AuditService;
use App\Services\KnowledgeBase\IngestionService;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;

class ChatFeedbackController extends Controller
{
    public function __construct(
        private readonly AuditService $auditService,
        private readonly IngestionService $ingestionService,
    ) {}

    /**
     * Senarai log chat dengan filter dan status feedback.
     */
    public function index(Request $request): View
    {
        $query = ChatLog::with(['session', 'category', 'feedback'])
            ->latest();

        if ($request->filled('has_answer')) {
            $query->where('has_answer', (bool) $request->has_answer);
        }

        if ($request->filled('is_flagged')) {
            $query->where('is_flagged', true);
        }

        if ($request->filled('category_id')) {
            $query->where('category_id', $request->category_id);
        }

        if ($request->filled('rating')) {
            $query->whereHas('feedback', fn($q) => $q->where('rating', $request->rating));
        }

        $logs       = $query->paginate(20)->withQueryString();
        $categories = Category::active()->ordered()->get();

        return view('admin.chat-feedback.index', compact('logs', 'categories'));
    }

    /**
     * Semak satu log chat dengan butiran penuh.
     */
    public function show(ChatLog $chatLog): View
    {
        $chatLog->load(['session', 'category', 'feedback.convertedFaq']);

        return view('admin.chat-feedback.show', compact('chatLog'));
    }

    /**
     * Convert soalan yang tidak dijawab dengan baik kepada FAQ rasmi.
     */
    public function convertToFaq(Request $request, ChatLog $chatLog): RedirectResponse
    {
        $validated = $request->validate([
            'category_id' => ['required', 'exists:categories,id'],
            'title'       => ['required', 'string', 'max:500'],
            'content'     => ['required', 'string', 'max:10000'],
        ]);

        $knowledgeItem = KnowledgeItem::create([
            'category_id' => $validated['category_id'],
            'item_type'   => KnowledgeItem::TYPE_FAQ,
            'title'       => $validated['title'],
            'content'     => $validated['content'],
            'is_active'   => true,
            'is_public'   => true,
            'created_by'  => auth()->id(),
            'updated_by'  => auth()->id(),
        ]);

        // Kemaskini feedback jika ada
        if ($feedback = $chatLog->feedback) {
            $feedback->update([
                'converted_to_faq' => true,
                'converted_faq_id' => $knowledgeItem->id,
                'reviewed_by'      => auth()->id(),
                'reviewed_at'      => now(),
            ]);
        }

        // Flag log chat sebagai dah diselesaikan
        $chatLog->update(['is_flagged' => false]);

        $this->auditService->faqConvertedFromFeedback($feedback, $knowledgeItem);

        // Embed knowledge item baru
        \App\Jobs\ReindexKnowledgeItemJob::dispatch($knowledgeItem->id);

        return redirect()
            ->route('admin.knowledge-items.show', $knowledgeItem)
            ->with('success', "FAQ baru '{$knowledgeItem->title}' berjaya dicipta dari log chat.");
    }

    /**
     * Toggle flag pada log chat untuk tanda perlu semakan.
     */
    public function toggleFlag(ChatLog $chatLog): RedirectResponse
    {
        $chatLog->update(['is_flagged' => !$chatLog->is_flagged]);

        return back()->with('success', $chatLog->is_flagged ? 'Log ditanda untuk semakan.' : 'Flag dibuang.');
    }
}