{
  "Conditions": {
    "UseSpotInstances": {
      "Fn::Not": [
        {
          "Fn::Equals": [
            {
              "Ref": "SpotPrice"
            },
            "0"
          ]
        }
      ]
    }
  },
  "Outputs": {
    "URL": {
      "Value": {
        "Fn::Join": [
          ".",
          [
            {
              "Ref": "AWS::StackName"
            },
            {
              "Ref": "HostedZoneName"
            }
          ]
        ]
      }
    }
  },
  "Parameters": {
    "HostedZoneName": {
      "Default": "terria.io.",
      "Type": "String"
    },
    "ImageId": {
      "Type": "String"
    },
    "InstanceType": {
      "Type": "String"
    },
    "KeyName": {
      "Type": "String"
    },
    "MaxSize": {
      "Type": "Number",
      "Default": "2"
    },
    "MinSize": {
      "Type": "Number",
      "Default": "1"
    },
    "RootVolumeSize": {
      "Default": "8",
      "Type": "Number"
    },
    "SpotPrice": {
      "Default": "0",
      "Type": "Number"
    },
    "StartupGracePeriod": {
      "Default": "600",
      "Type": "Number"
    },
    "UserDataBase64": {
        "Type": "String"
    },
    "WebServerPort": {
      "Default": "80",
      "Type": "Number"
    }
  },
  "Resources": {
    "AutoScalingGroup": {
      "Properties": {
        "AvailabilityZones": {
          "Fn::GetAZs": ""
        },
        "DesiredCapacity": {
          "Ref": "MinSize"
        },
        "HealthCheckGracePeriod": {
          "Ref": "StartupGracePeriod"
        },
        "HealthCheckType": "ELB",
        "LaunchConfigurationName": {
          "Ref": "LaunchConfiguration"
        },
        "LoadBalancerNames": [
          {
            "Ref": "ElasticLoadBalancer"
          }
        ],
        "MaxSize": {
          "Ref": "MaxSize"
        },
        "MinSize": {
          "Ref": "MinSize"
        },
        "Tags": [
          {
            "Key": "Stack",
            "PropagateAtLaunch": true,
            "Value": {
              "Ref": "AWS::StackName"
            }
          }
        ]
      },
      "Type": "AWS::AutoScaling::AutoScalingGroup",
      "UpdatePolicy": {
        "AutoScalingRollingUpdate": {
          "MaxBatchSize": "1",
          "MinInstancesInService": {
            "Fn::If": [
              "UseSpotInstances",
              0,
              1
            ]
          },
          "PauseTime": "PT0M5S"
        }
      }
    },
    "ElasticLoadBalancer": {
      "Properties": {
        "AvailabilityZones": {
          "Fn::GetAZs": ""
        },
        "ConnectionDrainingPolicy": {
          "Enabled": "true",
          "Timeout": "300"
        },
        "CrossZone": "true",
        "HealthCheck": {
          "HealthyThreshold": "2",
          "Interval": "30",
          "Target": {
            "Fn::Join": [
              "",
              [
                "HTTP:",
                {
                  "Ref": "WebServerPort"
                },
                "/ping"
              ]
            ]
          },
          "Timeout": "10",
          "UnhealthyThreshold": "5"
        },
        "Listeners": [
          {
            "InstancePort": {
              "Ref": "WebServerPort"
            },
            "LoadBalancerPort": "80",
            "Protocol": "HTTP"
          },
          {
            "InstancePort": "80",
            "LoadBalancerPort": "443",
            "Protocol": "HTTPS",
            "SSLCertificateId": "arn:aws:iam::278900443360:server-certificate/terra.io-20151208"
          }
        ]
      },
      "Type": "AWS::ElasticLoadBalancing::LoadBalancer"
    },
    "LaunchConfiguration": {
      "Properties": {
        "BlockDeviceMappings": [
          {
            "DeviceName": "/dev/sda1",
            "Ebs": {
              "VolumeSize": {
                "Ref": "RootVolumeSize"
              },
              "VolumeType": "gp2"
            }
          },
          {
            "DeviceName": "/dev/sdb",
            "VirtualName": "ephemeral0"
          },
          {
            "DeviceName": "/dev/sdc",
            "VirtualName": "ephemeral1"
          },
          {
            "DeviceName": "/dev/sdd",
            "VirtualName": "ephemeral2"
          },
          {
            "DeviceName": "/dev/sde",
            "VirtualName": "ephemeral3"
          }
        ],
        "IamInstanceProfile": {
          "Ref": "S3InstanceProfile"
        },
        "ImageId": {
          "Ref": "ImageId"
        },
        "InstanceMonitoring": "false",
        "InstanceType": {
          "Ref": "InstanceType"
        },
        "KeyName": {
          "Ref": "KeyName"
        },
        "SecurityGroups": [
          {
            "Ref": "SecurityGroup"
          }
        ],
        "SpotPrice": {
          "Fn::If": [
            "UseSpotInstances",
            {
              "Ref": "SpotPrice"
            },
            {
              "Ref": "AWS::NoValue"
            }
          ]
        },
        "UserData": {
            "Ref": "UserDataBase64"
        }
      },
      "Type": "AWS::AutoScaling::LaunchConfiguration"
    },
    "RecordSetGroup": {
      "Properties": {
        "HostedZoneName": {
          "Ref": "HostedZoneName"
        },
        "RecordSets": [
          {
            "AliasTarget": {
              "DNSName": {
                "Fn::GetAtt": [
                  "ElasticLoadBalancer",
                  "CanonicalHostedZoneName"
                ]
              },
              "HostedZoneId": {
                "Fn::GetAtt": [
                  "ElasticLoadBalancer",
                  "CanonicalHostedZoneNameID"
                ]
              }
            },
            "Name": {
              "Fn::Join": [
                ".",
                [
                  {
                    "Ref": "AWS::StackName"
                  },
                  {
                    "Ref": "HostedZoneName"
                  }
                ]
              ]
            },
            "Type": "A"
          }
        ]
      },
      "Type": "AWS::Route53::RecordSetGroup"
    },
    "S3InstanceProfile": {
      "Properties": {
        "Path": "/",
        "Roles": [
          {
            "Ref": "S3Role"
          }
        ]
      },
      "Type": "AWS::IAM::InstanceProfile"
    },
    "S3Role": {
      "Properties": {
        "AssumeRolePolicyDocument": {
          "Statement": [
            {
              "Action": [
                "sts:AssumeRole"
              ],
              "Effect": "Allow",
              "Principal": {
                "Service": [
                  "ec2.amazonaws.com"
                ]
              }
            }
          ]
        },
        "Path": "/",
        "Policies": [
          {
            "PolicyDocument": {
              "Statement": [
                {
                  "Action": [
                    "s3:Get*",
                    "s3:List*"
                  ],
                  "Effect": "Allow",
                  "Resource": "*"
                },
                {
                  "Action": [
                    "s3:GetObject",
                    "s3:PutObject"
                  ],
                  "Effect": "Allow",
                  "Resource": [
                    "arn:aws:s3:::terriamap-sharing",
                    "arn:aws:s3:::terriamap-sharing/*"
                  ]
                }
              ]
            },
            "PolicyName": "S3Read"
          }
        ]
      },
      "Type": "AWS::IAM::Role"
    },
    "SecurityGroup": {
      "Properties": {
        "GroupDescription": "SecurityGroup",
        "SecurityGroupIngress": [
          {
            "CidrIp": "0.0.0.0/0",
            "FromPort": "22",
            "IpProtocol": "tcp",
            "ToPort": "22"
          },
          {
            "FromPort": {
              "Ref": "WebServerPort"
            },
            "IpProtocol": "tcp",
            "SourceSecurityGroupName": {
              "Fn::GetAtt": [
                "ElasticLoadBalancer",
                "SourceSecurityGroup.GroupName"
              ]
            },
            "SourceSecurityGroupOwnerId": {
              "Fn::GetAtt": [
                "ElasticLoadBalancer",
                "SourceSecurityGroup.OwnerAlias"
              ]
            },
            "ToPort": {
              "Ref": "WebServerPort"
            }
          }
        ]
      },
      "Type": "AWS::EC2::SecurityGroup"
    }
  }
}