public string GetInstanceProfileOrDefault()

in src/Amazon.Common.DotNetCli.Tools/Commands/BaseCommand.cs [586:654]
58 lines of code
8 McCabe index (conditional complexity)

        public string GetInstanceProfileOrDefault(string propertyValue, CommandOption option, bool required, string newRoleName)
        {
            var value = GetStringValueOrDefault(propertyValue, option, false);
            if (!string.IsNullOrEmpty(value))
            {
                value = RoleHelper.ExpandInstanceProfile(this.IAMClient, value);
                return value;
            }
            else if (required && !this.DisableInteractive)
            {
                var existingProfiles = RoleHelper.FindExistingInstanceProfilesAsync(this.IAMClient, 20).Result;
                var selections = new List<string>();
                foreach (var profile in existingProfiles)
                    selections.Add(profile.InstanceProfileName);

                selections.Add("*** Create new Instance Profile ***");
                var chosenIndex = PromptForValue(option, selections);

                if(chosenIndex < selections.Count - 1)
                {
                    var arn = existingProfiles[chosenIndex].Arn;
                    _cachedRequestedValues[option] = arn;
                    return arn;
                }
                else
                {
                    var promptInfo = new RoleHelper.PromptRoleInfo
                    {
                        KnownManagedPolicyDescription = Constants.COMMON_KNOWN_MANAGED_POLICY_DESCRIPTIONS
                    };
                    var managedPolices = RoleHelper.FindManagedPoliciesAsync(this.IAMClient, promptInfo, 20).Result;
                    var profileSelection = new List<string>();
                    foreach (var profile in managedPolices)
                        profileSelection.Add(profile.PolicyName);

                    chosenIndex = PromptForValue("Select managed policy to assign to new instance profile: ", profileSelection);

                    var uniqueRoleName = RoleHelper.GenerateUniqueIAMRoleName(this.IAMClient, newRoleName);

                    this.Logger?.WriteLine("Creating role {0}", uniqueRoleName);
                    RoleHelper.CreateRole(this.IAMClient, uniqueRoleName, Constants.EC2_ASSUME_ROLE_POLICY, managedPolices[chosenIndex].Arn);

                    this.Logger?.WriteLine("Creating instance profile {0}", uniqueRoleName);
                    var response = this.IAMClient.CreateInstanceProfileAsync(new IdentityManagement.Model.CreateInstanceProfileRequest
                    {
                        InstanceProfileName = uniqueRoleName
                    }).Result;

                    this.Logger?.WriteLine("Assigning role to instance profile");
                    this.IAMClient.AddRoleToInstanceProfileAsync(new IdentityManagement.Model.AddRoleToInstanceProfileRequest
                    {
                        InstanceProfileName = uniqueRoleName,
                        RoleName = uniqueRoleName
                    }).Wait();

                    var arn = response.InstanceProfile.Arn;
                    _cachedRequestedValues[option] = arn;
                    return arn;
                }
            }

            if (required)
            {
                throw new ToolsException($"Missing required parameter: {option.Switch}", ToolsException.CommonErrorCode.MissingRequiredParameter);
            }

            return null;

        }