// Log in to https://console.tencentcloud.com/cam/capi to check and manage the SecretId and SecretKey of your project.
var COS = require('cos-nodejs-sdk-v5');
var Authorization = COS.getAuthorization({
  SecretId: process.env.SecretId, // User `SecretId`. We recommend that you obtain it from the environment variable. In addition, we recommend that you use a sub-account key and follow the principle of least privilege to reduce risks. For information about how to obtain a sub-account key, visit https://www.tencentcloud.com/document/product/598/37140?from_cn_redirect=1.
  SecretKey: process.env.SecretKey, // User `SecretKey`. We recommend that you obtain it from the environment variable. In addition, we recommend that you use a sub-account key and follow the principle of least privilege to reduce risks. For information about how to obtain a sub-account key, visit https://www.tencentcloud.com/document/product/598/37140?from_cn_redirect=1.
  Method: 'get',
  Key: 'a.jpg',
  Expires: 60,
  Query: {},
  Headers: {},
});

var url = cos.getObjectUrl({
  Bucket: 'examplebucket-1250000000', /* Your bucket name. Required. */
  Region: 'COS_REGION',  /* Bucket region, such as `ap-beijing`. Required. */
  Key: '1.jpg', /* Object key stored in the bucket (required), such as `1.jpg` and `a/b/test.txt`. */
  Sign: false,
});

var url = cos.getObjectUrl({
  Bucket: 'examplebucket-1250000000', /* Your bucket name. Required. */
  Region: 'COS_REGION',  /* Bucket region, such as `ap-beijing`. Required. */
  Key: 'Profile photo.jpg',  /* Object key stored in the bucket (such as `1.jpg` and `a/b/test.txt`). Required. */
});

cos.getObjectUrl(
  {
    Bucket: 'examplebucket-1250000000', /* Your bucket name. Required. */
    Region: 'COS_REGION',  /* Bucket region, such as `ap-beijing`. Required. */
    Key: 'Profile photo.jpg',  /* Object key stored in the bucket (such as `1.jpg` and `a/b/test.txt`). Required. */
    Sign: false,
  },
  function (err, data) {
    console.log(err || data.Url);
  }
);

cos.getObjectUrl(
  {
    Bucket: 'examplebucket-1250000000', /* Your bucket name. Required. */
    Region: 'COS_REGION',  /* Bucket region, such as `ap-beijing`. Required. */
    Key: 'Profile photo.jpg',  /* Object key stored in the bucket (such as `1.jpg` and `a/b/test.txt`). Required. */
    Sign: true,
    Expires: 3600, // Unit: second
  },
  function (err, data) {
    console.log(err || data.Url);
  }
);

var request = require('request');
var fs = require('fs');
cos.getObjectUrl(
  {
    Bucket: 'examplebucket-1250000000', /* Your bucket name. Required. */
    Region: 'COS_REGION',  /* Bucket region, such as `ap-beijing`. Required. */
    Key: 'Profile photo.jpg',  /* Object key stored in the bucket (such as `1.jpg` and `a/b/test.txt`). Required. */
    Sign: true,
  },
  function (err, data) {
    if (err) return console.log(err);
    console.log(data.Url);
    var req = request(data.Url, function (err, response, body) {
      console.log(err || body);
    });
    var writeStream = fs.createWriteStream(__dirname + '/1.jpg');
    req.pipe(writeStream);
  }
);

cos.getObjectUrl(
  {
    Bucket: 'examplebucket-1250000000', /* Your bucket name. Required. */
    Region: 'COS_REGION',  /* Bucket region, such as `ap-beijing`. Required. */
    Key: 'Profile photo.jpg',  /* Object key stored in the bucket (such as `1.jpg` and `a/b/test.txt`). Required. */
    Sign: true,
    /* The HTTP request parameters passed in should be the same as those of the actual request. This can prevent users from tampering with the HTTP request parameters. */
    Query: {
      'imageMogr2/thumbnail/200x/': '',
    },
    /* The HTTP request headers passed in should be included in the actual request. This can prevent users from tampering with the HTTP request headers that are signed here. */
    Headers: {
      host: 'xxx', /* Specified host for access. Error code 403 will be reported for access by a non-specified host. */
    },
  },
  function (err, data) {
    console.log(err || data.Url);
  }
);

var request = require('request');
var fs = require('fs');
cos.getObjectUrl(
  {
    Bucket: 'examplebucket-1250000000', /* Your bucket name. Required. */
    Region: 'COS_REGION',  /* Bucket region, such as `ap-beijing`. Required. */
    Key: 'Profile photo.jpg',  /* Object key stored in the bucket (such as `1.jpg` and `a/b/test.txt`). Required. */
    Method: 'PUT',
    Sign: true,
  },
  function (err, data) {
    if (err) return console.log(err);
    console.log(data.Url);
    var readStream = fs.createReadStream(__dirname + '/1.jpg');
    var req = request(
      {
        method: 'PUT',
        url: data.Url,
      },
      function (err, response, body) {
        console.log(err || body);
      }
    );
    readStream.pipe(req);
  }
);

function(err, data) { ... }