module.exports = function(client) {
  /* section: serviceCheck
     *comment: |
     *  post an update to a service check
     *params:
     *  check: the check name (e.g. "app.ok")
     *  hostName: the name of the host submitting the check
     *  status: one of `dogapi.OK`, `dogapi.WARNING`, `dogapi.CRITICAL` or `dogapi.UNKNOWN`
     *  parameters: |
     *    optional, an object containing any of the following
     *    * timestamp: POSIX timestamp for when the check happened
     *    * message: string message to accompany the check
     *    * tags: an array of "tag:value"'s associated with the check
     *  callback: function(err, res)
     *example: |
     *  ```javascript
     *   const dogapi = require("dogapi");
     *   const options = {
     *     api_key: "api_key",
     *     app_key: "app_key"
     *   };
     *   dogapi.initialize(options);
     *   const check = "app.ok";
     *   const hostName = "some.machine";
     *   dogapi.serviceCheck.check(
     *     check, hostName, dogapi.WARNING, function(err, res){
     *       console.dir(res);
     *   });
     *  ```
     */
  function check(checkName, hostName, status, parameters, callback) {
    if (arguments.length < 5 && typeof arguments[3] === 'function') {
      callback = parameters;
      parameters = {};
    }

    if (typeof parameters !== 'object') {
      parameters = {};
    }

    parameters.check = checkName;
    parameters.host_name = hostName;
    parameters.status = status;

    const params = {
      body: parameters
    };
    client.request('POST', '/check_run', params, callback);
  }

  return {
    check,
    getUsage() {
      return [
        '  dogapi servicecheck check <check> <host> <status> [--time <timestamp>] [--message <message>] [--tags <tags>]'
      ];
    },
    getHelp() {
      return [
        'Service Check:',
        '  Subcommands:',
        '    check <check> <host> <status>  add a new service check for <check> and <host> at level <status> (0=OK, 1=WARNING, 2=CRITICAL, 3=UNKNOWN)',
        '',
        '  Options:',
        '    --time <timestamp>             the POSIX timestamp to use for the check',
        '    --message <message>            an optional message to accompany the check',
        '    --tags <tags>                  a comma separated list of "tag:value"\'s for the check'
      ];
    },
    handleCli(subcommand, args, callback) {
      if (args._.length > 6) {
        const parameters = {};
        if (args.time) {
          parameters.time = parseInt(args.time);
        }
        if (args.message) {
          parameters.message = args.message;
        }
        if (args.tags) {
          parameters.tags = args.tags.split(',');
        }
        check(args._[4], args._[5], parseInt(args._[6]), parameters, callback);
      } else {
        return callback('not enough arguments try `dogapi servicecheck --help` for help', false);
      }
    }
  };
};