<?php

namespace App\Services;

use Spatie\Browsershot\Browsershot;
use Illuminate\Http\Response;
use Illuminate\Support\Facades\File;

class PdfWrapper
{
    protected Browsershot $pdfGenerator;
    protected string $html;

    public function __construct()
    {
        $this->pdfGenerator = new Browsershot();
    }

    // Load view and render HTML
    public function loadView(string $bladeFile, array $data = []): self
    {
        // Convert image paths to base64
        if (isset($data['imagePaths']) && is_array($data['imagePaths'])) {
            $data['imagesBase64'] = array_map(function($path) {
                return $this->getImageBase64($path);
            }, $data['imagePaths']);
        }

        $this->html = view($bladeFile, $data)->render();
        return $this;
    }

    // Load raw HTML
    public function loadHtml(string $html): self
    {
        $this->html = $html;
        return $this;
    }

    // Load HTML from a URL
    public function loadUrl(string $url): self
    {
        $this->html = file_get_contents(url($url));
        return $this;
    }

    // Generate the PDF using Browsershot
    public function generate(): Browsershot
    {
        return $this->pdfGenerator
            ->html($this->html)
            ->format('A4')
            ->scale(0.7)
            ->fullPage()
            ->setOption('printBackground', true)
            ->showBackground()
            ->waitUntilNetworkIdle();
    }

    // Save the PDF to the server in the public folder
    public function save(string $path): void
    {
        $this->generate()->savePdf($path);
    }

    // Download the PDF with a specified filename
    public function download(string $filename)
    {
        $pdf = $this->generate()->pdf();
        return new Response($pdf, 200, [
            'Content-Type' => 'application/pdf',
            'Content-Disposition' => 'attachment; filename="'.$filename.'"',
            'Content-Length' => strlen($pdf)
        ]);
    }

    // Stream the PDF in the browser
    public function stream(string $filename)
    {
        $pdf = $this->generate()->pdf();
        return new Response($pdf, 200, [
            'Content-Type' => 'application/pdf',
            'Content-Disposition' => 'inline; filename="'.$filename.'"'
        ]);
    }

    // Function to convert image to base64
    protected function getImageBase64($imagePath)
    {
        $path = public_path($imagePath);
        $type = pathinfo($path, PATHINFO_EXTENSION);
        $data = File::get($path);
        $base64 = 'data:image/' . $type . ';base64,' . base64_encode($data);

        return $base64;
    }
}