Nashorn script to validate a GitHub profile: check whether name, email, company and a custom avatar have been set.

validate-github-profile.js

#!/usr/bin/jjs
if (arguments.length < 1) {
	print("Usage: validate-github-profile.js user ...");
	exit();
}

var github_oauth = JSON.parse(readFully("./github-oauth.json"));
var user_pass = "${github_oauth.user}:${github_oauth.token}";
var github_api_url = "https://${user_pass}@api.github.com";

function stringify(json) {
  return JSON.stringify(json, null, '  ');
}

function gh_curl(cmd, endpoint) {
  return curl(cmd, "${github_api_url}${endpoint}");
}

function curl(cmd, url) {
  return $EXEC("curl -sb -H \"Accept: application/json\" -X ${cmd} '${url}'");
}

var user = arguments[0];
print("Going to validate GitHub user @${user}...");

var endpoint = "/users/${user}";
var result = gh_curl("GET", "${endpoint}");
var json = JSON.parse(result);

var avatar_url = json.avatar_url;
var avatar_default = "https://identicons.github.com/${user}.png";

// download avatars for comparison
$EXEC("wget -O avatar_custom ${avatar_url}");
$EXEC("wget -O avatar_default ${avatar_default}");

// compare avatars
var comparison_result = $EXEC("sh -c '[ \"$( compare -metric rmse avatar_custom avatar_default null: 2>&1 )\" = \"0 (0)\" ] && echo -n \"Default avatar\" || echo -n \"Custom avatar\"'");

var user_properties = {"name":json.name,"Avatar":comparison_result,"email":json.email,"company":json.company};
print(stringify(user_properties));

// delete downloaded avatars
$EXEC("rm avatar_custom avatar_default");