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File Metadata Microservice

curriculum/challenges/english/blocks/back-end-development-and-apis-projects/bd7158d8c443edefaeb5bd0f.md

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--description--

Build a full-stack JavaScript app that is functionally similar to this: <a href="https://file-metadata-microservice.freecodecamp.rocks" target="_blank" rel="noopener noreferrer nofollow">https://file-metadata-microservice.freecodecamp.rocks</a>. Working on this project will involve you writing your code using one of the following methods:

  • Clone <a href="https://github.com/freeCodeCamp/boilerplate-project-filemetadata/" target="_blank" rel="noopener noreferrer nofollow">this GitHub repo</a> and complete your project locally.
  • Use a site builder of your choice to complete the project. Be sure to incorporate all the files from our GitHub repo.

--instructions--

HINT: You can use the multer npm package to handle file uploading.

--hints--

You should provide your own project, not the example URL.

js
  assert(
    !/.*\/file-metadata-microservice\.freecodecamp\.rocks/.test(
      code
    )
  );

You can submit a form that includes a file upload.

js
  const site = await fetch(code);
  const data = await site.text();
  const doc = new DOMParser().parseFromString(data, 'text/html');
  assert(doc.querySelector('input[type="file"]'));

The form file input field has the name attribute set to upfile.

js
  const site = await fetch(code);
  const data = await site.text();
  const doc = new DOMParser().parseFromString(data, 'text/html');
  assert(doc.querySelector('input[name="upfile"]'));

When you submit a file, you receive the file name, type, and size in bytes within the JSON response.

js
  const formData = new FormData();
  const fileData = await fetch(
    'https://cdn.freecodecamp.org/weather-icons/01d.png'
  );
  const file = await fileData.blob();
  formData.append('upfile', file, 'icon');
  const data = await fetch(code + '/api/fileanalyse', {
    method: 'POST',
    body: formData
  });
  const parsed = await data.json();
  assert.property(parsed, 'size');
  assert.equal(parsed.name, 'icon');
  assert.equal(parsed.type, 'image/png');