function validateLength()

in app/scripts/modules/google/validation/applicationName.validator.js [21:79]
49 lines of code
17 McCabe index (conditional complexity)

    function validateLength(name, warnings, errors) {
      // GCE resource names must comply with https://www.ietf.org/rfc/rfc1035.txt
      // [a-z]([-a-z0-9]*[a-z0-9])?
      let maxResourceNameLength = 63;

      // e.g. $appName-$stack-$detail-tp-1451531076528 and $appName-$stack-$detail-hc-1451531076528
      let loadBalancerNameSuffixLength = 17;
      let maxLengthForLoadBalancers = maxResourceNameLength - loadBalancerNameSuffixLength;

      // e.g. $appName-$stack-$detail-v000-abcd
      let instanceNameSuffixLength = 10;
      let maxLengthForServerGroups = maxResourceNameLength - instanceNameSuffixLength;

      if (name.length > maxResourceNameLength) {
        errors.push('The maximum length for an application in Google is 63 characters.');
        return;
      }

      if (name.length > maxLengthForLoadBalancers - 12) {
        if (name.length > maxLengthForLoadBalancers) {
          warnings.push(`You will not be able to create a Google load balancer for this application if the
            application's name is longer than ${maxLengthForLoadBalancers} characters (currently: ${name.length}
          characters).`);
        } else if (name.length >= maxLengthForLoadBalancers - 2) {
          warnings.push('With separators ("-"), you will not be able to include a stack and detail field for ' +
            'Google load balancers.');
        } else {
          let remaining = maxLengthForLoadBalancers - 2 - name.length;
          warnings.push(`If you plan to include a stack or detail field for Google load balancers, you will only
            have ~${remaining} characters to do so.`);
        }
      }

      if (name.length > maxLengthForServerGroups - 12) {
        if (name.length > maxLengthForServerGroups) {
          warnings.push(`You will not be able to create a Google server group for this application if the
            application's name is longer than ${maxLengthForServerGroups} characters (currently: ${name.length}
            characters).`);
        } else if (name.length >= maxLengthForServerGroups - 2) {
          warnings.push('With separators ("-"), you will not be able to include a stack and detail field for ' +
            'Google server groups.');
        } else {
          let remaining = maxLengthForServerGroups - 2 - name.length;
          warnings.push(`If you plan to include a stack or detail field for Google server groups, you will only
            have ~${remaining} characters to do so.`);
        }
      }

      if (name.length > maxResourceNameLength - 12) {
        if (name.length >= maxResourceNameLength - 2) {
          warnings.push('With separators ("-"), you will not be able to include a stack and detail field for ' +
            'Google security groups.');
        } else {
          let remaining = maxResourceNameLength - 2 - name.length;
          warnings.push(`If you plan to include a stack or detail field for Google security groups, you will only
            have ~${remaining} characters to do so.`);
        }
      }
    }