import * as http from 'http';

export const getFileContents: () => Promise<Buffer> = () => new Promise((resolve, reject) => {
  const product = 'assets_swtor_de_de';

  //Generate URL
  const url = `http://cdn-patch.swtor.com/patch/${product}/${product}_-1to0.solidpkg`;
  const path = `/patch/${product}/${product}_-1to0.solidpkg`;
  const fileName = url.substr(url.lastIndexOf('/') + 1);

  const request = http.request({
    family: 4,
    host: 'cdn-patch.swtor.com',
    path,
  }, (response) => {
    console.log(`STATUS: ${response.statusCode}`);
    console.log(`HEADERS: ${JSON.stringify(response.headers)}`);

    const chunkList: Buffer[] = [];
    let totalLength = 0;
    response.on('data', (chunk) => {
      console.log(`BODY: ${chunk.length}`);
      chunkList.push(chunk);
      totalLength += chunk.length;
    });
    response.on('end', () => {
      console.log('No more data in response.');
      const fileContents = Buffer.concat(chunkList, totalLength);
      resolve(fileContents);
    });
  });

  request.on('error', (e) => {
    console.error(`problem with request: ${e.message}`);
    reject(e);
  });
  request.end();
});

getFileContents();