Regarding Pdf Preview

To implement a PDF preview in Angular, you can use the pdf.js library. Here’s a basic example of how you can do it:

1. Install pdf.js: You can add it to your project using npm:

npm install pdfjs-dist

1. Import pdf.js in your component:

import * as PDFJS from 'pdfjs-dist';

1. Fetch the PDF from the API and display it:

Assuming you have a function getPdfUrl() that returns the URL of the PDF from your API, you can use the following code to fetch the PDF and display it:

let loadingTask = PDFJS.getDocument(this.getPdfUrl());

loadingTask.promise.then(pdf => {
  console.log('PDF loaded');
  
  // Fetch the first page
  let pageNumber = 1;
  pdf.getPage(pageNumber).then(page => {
    console.log('Page loaded');
    
    let scale = 1.5;
    let viewport = page.getViewport({scale: scale});

    // Prepare canvas using PDF page dimensions
    let canvas = document.getElementById('the-canvas');
    let context = canvas.getContext('2d');
    canvas.height = viewport.height;
    canvas.width = viewport.width;

    // Render PDF page into canvas context
    let renderContext = {
      canvasContext: context,
      viewport: viewport
    };
    let renderTask = page.render(renderContext);
    renderTask.promise.then(() => {
      console.log('Page rendered');
    });
  });
}, function (reason) {
  // PDF loading error
  console.error(reason);
});

In this example, replace 'the-canvas' with the id of your canvas element. This code will fetch the PDF from the API, load it, and render the first page to a canvas element.

Thanks