freeCodeCamp/curriculum/challenges/english/05-back-end-development-and-apis/back-end-development-and-apis-projects/file-metadata-microservice.md

id, title, challengeType, forumTopicId, dashedName

id	title	challengeType	forumTopicId	dashedName
bd7158d8c443edefaeb5bd0f	File Metadata Microservice	4	301506	file-metadata-microservice

--description--

Build a full stack JavaScript app that is functionally similar to this: https://file-metadata-microservice.freecodecamp.rocks/. Working on this project will involve you writing your code using one of the following methods:

• Clone this GitHub repo and complete your project locally.
• Use our Replit starter project to complete your project.
• Use a site builder of your choice to complete the project. Be sure to incorporate all the files from our GitHub repo.

When you are done, make sure a working demo of your project is hosted somewhere public. Then submit the URL to it in the Solution Link field. Optionally, also submit a link to your projects source code in the GitHub Link field.

--instructions--

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

--hints--

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

(getUserInput) => {
  assert(
    !/.*\/file-metadata-microservice\.freecodecamp\.rocks/.test(
      getUserInput('url')
    )
  );
};

You can submit a form that includes a file upload.

async (getUserInput) => {
  const site = await fetch(getUserInput('url'));
  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.

async (getUserInput) => {
  const site = await fetch(getUserInput('url'));
  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.

async (getUserInput) => {
  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(getUserInput('url') + '/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');
};

--solutions--

/**
  Backend challenges don't need solutions, 
  because they would need to be tested against a full working project. 
  Please check our contributing guidelines to learn more.
*/