<?php

namespace App\Http\Controllers;

use App\Http\Requests\UpdateMeRequest;
use App\Http\Resources\UserTypeResource;
use App\Services\UserService;
use App\Http\Requests\UserRequest;
use App\Http\Resources\UserResource;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\UploadedFile;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Str;

class UserController extends Controller
{
  public function __construct(protected UserService $service) {}

  public function me(): JsonResponse
  {
    $user = $this->service->me();
    return $this->successResponse(payload: new UserResource($user));
  }

  public function index(): JsonResponse
  {
    $items = $this->service->getAll();
    return $this->successResponse(
      payload: UserResource::collection($items),
    );
  }

  public function store(UserRequest $request): JsonResponse
  {
    $item = $this->service->create($request->validated());
    return $this->successResponse(
      payload: new UserResource($item),
      message: __("messages.created"),
      code: 201,
    );
  }

  public function show(int $id): JsonResponse
  {
    $item = $this->service->findById($id);
    return $this->successResponse(payload: new UserResource($item));
  }

  public function update(UserRequest $request, int $id): JsonResponse
  {
    $item = $this->service->update($id, $request->validated());
    return $this->successResponse(
      payload: new UserResource($item),
      message: __("messages.updated"),
    );
  }

  public function destroy(int $id): JsonResponse
  {
      $this->service->delete($id);

      return $this->successResponse(
          message: __('messages.deleted'),
          code: 204,
      );
  }

  public function updateMe(UpdateMeRequest $request): JsonResponse
  {
      $traceId = Str::uuid()->toString();
      Log::withContext(['trace_id' => $traceId]);

      $hasAvatar = $request->hasFile('avatar');
      $avatar    = $request->file('avatar');

      $data       = $request->validated();
      $hasBase64  = ! empty($data['avatar_base64']);

      Log::warning('[avatar-upload] Requisição recebida em updateMe', [
          'user_id'          => auth()->id(),
          'has_avatar'       => $hasAvatar,
          'has_avatar_base64'=> $hasBase64,
          'avatar_base64_len'=> $hasBase64 ? strlen($data['avatar_base64']) : null,
          'avatar_valid'     => $hasAvatar ? $avatar->isValid() : null,
          'avatar_size'      => $hasAvatar ? $avatar->getSize() : null,
          'avatar_mime'      => $hasAvatar ? $avatar->getMimeType() : null,
          'avatar_extension' => $hasAvatar ? $avatar->getClientOriginalExtension() : null,
          'avatar_error'     => $hasAvatar ? $avatar->getError() : null,
          'method'           => $request->method(),
          'content_type'     => $request->header('Content-Type'),
      ]);

      if ($hasBase64) {
          $decoded = $this->decodeBase64ToUploadedFile($data['avatar_base64']);

          Log::warning('[avatar-upload] Avatar base64 decodificado', [
              'decode_ok'   => $decoded !== null,
              'decoded_size'=> $decoded?->getSize(),
              'decoded_mime'=> $decoded?->getClientMimeType(),
          ]);

          if ($decoded) {
              $data['avatar'] = $decoded;
          }
      }

      unset($data['avatar_base64']);

      $user = $this->service->updateMe($data);

      Log::warning('[avatar-upload] updateMe concluído com sucesso', [
          'user_id'         => $user->id,
          'client_id'       => $user->client?->id,
          'profile_media_id'=> $user->client?->profile_media_id,
          'media_path'      => $user->client?->profileMedia?->path,
          'media_url'       => $user->client?->profileMedia?->url,
      ]);

      return $this->successResponse(
          payload: new UserResource($user),
          message: __('messages.updated'),
      );
  }

  private function decodeBase64ToUploadedFile(string $base64): ?UploadedFile
  {
      if (preg_match('/^data:(image\/[a-zA-Z0-9.+-]+);base64,(.+)$/s', $base64, $matches)) {
          $mime    = $matches[1];
          $content = base64_decode($matches[2], true);
      } else {
          $mime    = 'image/jpeg';
          $content = base64_decode($base64, true);
      }

      if ($content === false || $content === '') {
          return null;
      }

      $extension = match ($mime) {
          'image/png'              => 'png',
          'image/webp'             => 'webp',
          'image/jpg', 'image/jpeg' => 'jpg',
          default                  => 'jpg',
      };

      $tmpPath = tempnam(sys_get_temp_dir(), 'avatar_');

      if ($tmpPath === false || file_put_contents($tmpPath, $content) === false) {
          return null;
      }

      return new UploadedFile(
          path: $tmpPath,
          originalName: 'avatar.'.$extension,
          mimeType: $mime,
          test: true,
      );
  }

  public function getUserTypes(): JsonResponse
  {
    $user_types = $this->service->getUserTypes();
    return $this->successResponse(
      payload: new UserTypeResource($user_types),
    );
  }
}