<?php
namespace app\common\controller;

use app\common\controller\BaseController;
use app\common\model\UsedCar;
use app\common\model\UsedCarPdfLog;
use app\common\service\OssService;
use app\common\traits\crud\CrudControllerTrait;
use app\common\service\UsedCarService;
use app\common\utils\pdf\service\MpdfDriver;
use support\exception\BusinessException;
use support\Request;

class UsedCarController extends BaseController
{
    use CrudControllerTrait;

    protected $service;

    protected $noNeedLogin = ['downloadPdf'];

    protected $noNeedHeaderData = ['downloadPdf'];

    public function __construct()
    {
        $this->service = new UsedCarService();
    }

    /**
     * 列表页数据格式化
     *
     * @param array $data
     * @return array
     */
     protected function indexFormat($data)
     {
         if (isset($data['created_at']))
             $data['created_at'] = date('Y-m-d H:i:s', $data['created_at']);
         if (isset($data['updated_at']))
             $data['updated_at'] = date('Y-m-d H:i:s', $data['updated_at']);
         if (!empty($data['images'])){
             $images = explode(',', $data['images']);
             $ossService = new OssService();
             $images_pull = [];
             foreach ($images as $image){
                 $images_pull[] = $ossService->generatePrivateUrl($image);
             }
             $data['images_pull'] = $images_pull;

         }
         return $data;
     }

    /**
     * 列表页数据格式化
     *
     * @param array $data
     * @return array
     */
     protected function showFormat($data)
     {
         if (isset($data['created_at']))
             $data['created_at'] = date('Y-m-d H:i:s', $data['created_at']);
         if (isset($data['updated_at']))
             $data['updated_at'] = date('Y-m-d H:i:s', $data['updated_at']);
         if (!empty($data['images'])){
             $images = explode(',', $data['images']);
             $ossService = new OssService();
             $images_pull = [];
             foreach ($images as $image){
                 $images_pull[] = $ossService->generatePrivateUrl($image);
             }
             $data['images_pull'] = $images_pull;

         }else{
             $data['images_pull'] = [];
         }
         if (!empty($data['attachment'])){
             //$attachments = explode(',', $data['attachment']);
             $attachments = json_decode($data['attachment'], true);
             $ossService = new OssService();
             $attachment_pull = [];
             foreach ($attachments as $attachment){
                 $attachment_pull[] = [
                     'name'=>$attachment['name'],
                     'src'=>$ossService->generatePrivateUrl($attachment['src'])
                 ];
             }
             $data['attachment_pull'] = $attachment_pull;

         }else{
             $data['attachment_pull'] = [];
         }

         return $data;
     }

     public function crawlKeyword(Request $request){
         try {
//             $keyword = $request->get('keyword');
             $data = $this->service->crawlKeyword($request);
             return $this->success($data);
         } catch (\Throwable $e) {
             return $this->error($e->getMessage());
         }
     }

    /**
     * 生成pdf
     * @param Request $request
     * @return \support\Response
     */
     public function producePdf(Request $request){
         try {
             $price = $request->get('price');
             if(empty($price)){
                 throw new BusinessException("请输入生成pdf中的价格");
             }
             $raw = $this->service->serviceShow($request);
             $data = $this->transformData($raw, method_exists($this, 'showFormat')
                 ? [$this, 'showFormat']
                 : null);
             $images = [];
             foreach ($data['images_pull'] as $image){
                 $images[] = $this->service->downloadImage($image);
             }
             $data['images'] = $images;

             $attachments = [];
             foreach ($data['attachment_pull'] as $attachment){
                 // 方法1：使用 pathinfo
                 $path = parse_url($attachment['src'], PHP_URL_PATH); // 获取路径部分
                 $extension = pathinfo($path, PATHINFO_EXTENSION); // 获取扩展名

                 if (strtolower($extension) === 'pdf') { //如果是pdf则下载到本地
                     $attachments[] = $this->service->downloadAttachment($attachment['src']);
                 }
             }
             $data['attachment'] = $attachments;
             $data['price'] = $price;

             $pdf = (new MpdfDriver())->exportUsedCarPdf($data);
             UsedCar::where('id', $data['id'])->update(['pdf_src' => $pdf]);

             array_map('unlink', glob(runtime_path('pdf/images/*.jpg')));
             array_map('unlink', glob(runtime_path('pdf/attachment/*.pdf')));

             UsedCarPdfLog::create([
                 'user_id' => $request->user['id'],
                 'used_car_id' => $request->get('id'),
                 'price_snapshot' => $price,
                 'pdf_path' => $pdf,
             ]);
             return $this->success($pdf);
         } catch (\Throwable $e) {
             return $this->error($e->getMessage());
         }
     }

     public function downloadPdf(Request $request){
         $raw = $this->service->serviceShow($request);
         $filePath = runtime_path('pdf') .'/'. $raw['pdf_src'];

         if (!file_exists($filePath)) {
             return response($filePath.'文件不存在', 404);
         }

         return response()->download(
             $filePath,
             $raw['product_name'].'-'.$raw['id'].'.pdf'   // 下载时显示的文件名
         );
     }

    public function getPdf(Request $request)
    {
        try {
            $raw = $this->service->serviceShow($request);
            $filePath = runtime_path('pdf') . '/' . $raw['pdf_src'];

            if (empty($raw['pdf_src']) || !file_exists($filePath)) {
                throw new BusinessException('文件不存在');
            }

            // 确保 public/pdf 存在
            $publicDir = public_path('pdf');
            if (!is_dir($publicDir)) {
                mkdir($publicDir, 0755, true);
            }

            // 拷贝到 public 目录
            $publicFile = $publicDir . '/' . $raw['pdf_src'];
            if (!file_exists($publicFile)) {
                copy($filePath, $publicFile);
            }

            // 返回访问地址
            $baseUrl = 'https://' . request()->header('host');
            $url = $baseUrl . '/pdf/' . $raw['pdf_src'];

            return $this->success([
                'pdf_url' => $url,
                'file_name' => $raw['product_name'] . '-' . $raw['id'] . '.pdf'
            ]);
        } catch (\Throwable $e) {
            return $this->error($e->getMessage());
        }
    }

}