<?php

namespace App\Http\Controllers\System;

use App\Http\Controllers\Controller;
use App\Models\AiVoiceRecording;
use App\Models\Interview\InterviewCategory;
use App\Services\AiVoiceRecordingService;
use App\Services\GoogleCloudService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Str;
use Illuminate\View\View;
use Symfony\Component\HttpFoundation\Response;

class AiVoiceRecordingController extends Controller
{
    public function __construct(
        private readonly AiVoiceRecordingService $service
    ) {}

    /**
     * React 뷰 반환
     */
    public function index(Request $request): View|Response
    {
        if ($request->header('HX-Request')) {
            return response('', 200)->header('HX-Redirect', route('system.ai-voice-recording.index'));
        }

        return view('system.ai-voice-recording.index');
    }

    /**
     * JSON 목록
     */
    public function list(Request $request): JsonResponse
    {
        $params = $request->only(['search', 'status', 'per_page']);
        $recordings = $this->service->getList($params);

        return response()->json([
            'success' => true,
            'data' => $recordings,
        ]);
    }

    /**
     * 카테고리 + 템플릿 목록
     */
    public function categories(): JsonResponse
    {
        $categories = InterviewCategory::with(['templates' => function ($q) {
            $q->where('is_active', true)->orderBy('sort_order');
        }])
            ->where('is_active', true)
            ->orderBy('sort_order')
            ->get(['id', 'name', 'description']);

        return response()->json([
            'success' => true,
            'data' => $categories,
        ]);
    }

    /**
     * 새 녹음 생성
     */
    public function store(Request $request): JsonResponse
    {
        $validated = $request->validate([
            'title' => 'nullable|string|max:200',
            'interview_template_id' => 'nullable|integer|exists:interview_templates,id',
        ]);

        $recording = $this->service->create($validated);

        return response()->json([
            'success' => true,
            'message' => '녹음이 생성되었습니다.',
            'data' => $recording,
        ], 201);
    }

    /**
     * Base64 오디오 업로드 + 처리
     */
    public function processAudio(Request $request, int $id): JsonResponse
    {
        $recording = AiVoiceRecording::find($id);

        if (! $recording) {
            return response()->json([
                'success' => false,
                'message' => '녹음을 찾을 수 없습니다.',
            ], 404);
        }

        $validated = $request->validate([
            'audio' => 'required|string',
            'duration' => 'required|integer|min:1',
        ]);

        $result = $this->service->processAudio(
            $recording,
            $validated['audio'],
            $validated['duration']
        );

        if (! $result['ok']) {
            return response()->json([
                'success' => false,
                'message' => $result['error'] ?? '처리 중 오류가 발생했습니다.',
            ], 500);
        }

        return response()->json([
            'success' => true,
            'message' => '음성 분석이 완료되었습니다.',
            'data' => $result['recording'],
        ]);
    }

    /**
     * 파일 업로드 + 처리
     */
    public function uploadFile(Request $request): JsonResponse
    {
        $validated = $request->validate([
            'audio_file' => 'required|file|mimes:webm,wav,mp3,ogg,m4a,mp4|max:102400',
            'title' => 'nullable|string|max:200',
            'interview_template_id' => 'nullable|integer|exists:interview_templates,id',
        ]);

        $recording = $this->service->create([
            'title' => $validated['title'] ?? '업로드된 음성녹음',
            'interview_template_id' => $validated['interview_template_id'] ?? null,
        ]);

        $result = $this->service->processUploadedFile(
            $recording,
            $request->file('audio_file')
        );

        if (! $result['ok']) {
            return response()->json([
                'success' => false,
                'message' => $result['error'] ?? '처리 중 오류가 발생했습니다.',
            ], 500);
        }

        return response()->json([
            'success' => true,
            'message' => '음성 분석이 완료되었습니다.',
            'data' => $result['recording'],
        ]);
    }

    /**
     * 상세 조회
     */
    public function show(int $id): JsonResponse
    {
        $recording = $this->service->getById($id);

        if (! $recording) {
            return response()->json([
                'success' => false,
                'message' => '녹음을 찾을 수 없습니다.',
            ], 404);
        }

        return response()->json([
            'success' => true,
            'data' => $recording,
        ]);
    }

    /**
     * 삭제
     */
    public function destroy(int $id): JsonResponse
    {
        $recording = AiVoiceRecording::find($id);

        if (! $recording) {
            return response()->json([
                'success' => false,
                'message' => '녹음을 찾을 수 없습니다.',
            ], 404);
        }

        $this->service->delete($recording);

        return response()->json([
            'success' => true,
            'message' => '녹음이 삭제되었습니다.',
        ]);
    }

    /**
     * 처리 상태 폴링용
     */
    public function status(int $id): JsonResponse
    {
        $recording = AiVoiceRecording::find($id);

        if (! $recording) {
            return response()->json([
                'success' => false,
                'message' => '녹음을 찾을 수 없습니다.',
            ], 404);
        }

        return response()->json([
            'success' => true,
            'data' => [
                'id' => $recording->id,
                'status' => $recording->status,
                'status_label' => $recording->status_label,
                'is_completed' => $recording->isCompleted(),
                'is_processing' => $recording->isProcessing(),
                'transcript_text' => $recording->transcript_text,
                'analysis_text' => $recording->analysis_text,
            ],
        ]);
    }

    /**
     * GCS 음성파일 다운로드
     */
    public function download(int $id): Response|JsonResponse
    {
        $recording = AiVoiceRecording::find($id);

        if (! $recording || ! $recording->audio_file_path) {
            return response()->json([
                'success' => false,
                'message' => '파일을 찾을 수 없습니다.',
            ], 404);
        }

        $googleCloudService = app(GoogleCloudService::class);
        $content = $googleCloudService->downloadFromStorage($recording->audio_file_path);

        if (! $content) {
            return response()->json([
                'success' => false,
                'message' => '파일 다운로드에 실패했습니다.',
            ], 500);
        }

        // 파일 확장자 추출
        $extension = pathinfo($recording->audio_file_path, PATHINFO_EXTENSION) ?: 'webm';

        // 파일명 생성 (제목 기반, URL 안전하게)
        $filename = Str::slug($recording->title ?: 'recording').'.'.  $extension;

        return response($content)
            ->header('Content-Type', 'audio/'.$extension)
            ->header('Content-Disposition', 'attachment; filename="'.$filename.'"');
    }
}