AWSTemplateFormatVersion: '2010-09-09'
Description: Defend Together ECS Infrastructure
Parameters:
  #------------------------
  # Deployment Information
  #------------------------
  environment:
    Type: String
    Description: Name of the environment to use in naming.
    Default: production
  release:
    Type: String
    Description: Name of the release name of the stack version to use.
    Default: production
    AllowedValues: ['develop', 'stage', 'production']
    ConstraintDescription: "Must be a possible release version."
  VpcId:
    Description: ID of the VPC
    Type: AWS::EC2::VPC::Id
  DockerTag:
    Description: Tag in DockerHub to deploy
    Type: String
    Default: "latest"
  
  #-----------------
  # Load Balancing 
  #-----------------
  PublicSubnets:
    Description: The public subnets for the ALB to run in. (Space seperated)
    Type: String

  #-----
  # DNS
  #-----
  Domain:
    Type: String
    Description: The domain to create the endpoint on (Must have an existing hosted zone ex. `example.com`) Leave blank to skip DNS.
    Default: ""
  SubDomain:
    Type: String
    Description: The subdomain to be used by dt. (ex. `dt.example.com`)
    Default: dt

  #------------
  # CloudWatch
  #------------
  LogGroup:
    Type: String
    Description: The AWS CloudWatch log group to output logs to.
    Default: "/ecs/dt"

Conditions:
  CreateDns: !Not [!Equals [!Ref Domain, ""]]

Resources:

  #-----
  # DNS
  #-----
  DnsRecords:
    Condition: CreateDns
    Type: AWS::CloudFormation::Stack
    Properties:
      TemplateURL: !Sub 'https://s3.${AWS::Region}.amazonaws.com/sumu-stacks/dt/${release}/cloudformation/dt/dns.yaml'
      Parameters:
        environment: !Ref environment
        Domain: !Ref Domain
        SubDomain: !Ref SubDomain
        DtDNS: !GetAtt LoadBalancing.Outputs.NlbDnsName

  #-----
  # IAM
  #-----
  IAM:
    Type: AWS::CloudFormation::Stack
    Properties:
      TemplateURL: !Sub 'https://s3.${AWS::Region}.amazonaws.com/sumu-stacks/dt/${release}/cloudformation/dt/iam.yaml'
      Parameters:
        environment: !Ref environment

  #--------
  # Lambda
  #--------
  LambdaFunctions:
    Type: AWS::CloudFormation::Stack
    Properties:
      TemplateURL: !Sub 'https://s3.${AWS::Region}.amazonaws.com/sumu-stacks/dt/${release}/cloudformation/dt/lambdas.yaml'
      Parameters:
        environment: !Ref environment
        release: !Ref release
        TaskManagerRole: !GetAtt IAM.Outputs.DefaultRole
        VpcId: !Ref VpcId
        SubnetIds: !Join [",", !Split [" ", !Ref PublicSubnets]]

  #------------
  # CloudWatch
  #------------
  CloudWatchRules:
    Type: AWS::CloudFormation::Stack
    Properties:
      TemplateURL: !Sub 'https://s3.${AWS::Region}.amazonaws.com/sumu-stacks/dt/${release}/cloudformation/dt/cloudwatch.yaml'
      Parameters:
        environment: !Ref environment
        Cluster: !GetAtt EcsCluster.Outputs.Cluster
        LambdaArn: !GetAtt LambdaFunctions.Outputs.TaskListManager

  #---------
  # Caching
  #---------
  RedisCache:
    Type: AWS::CloudFormation::Stack
    Properties:
      TemplateURL: !Sub 'https://s3.${AWS::Region}.amazonaws.com/sumu-stacks/dt/${release}/cloudformation/redis/top.yaml'
      Parameters:
        Environment: !Ref environment
        VpcId: !Ref VpcId
        SubnetIds: !Join [",", !Split [" ", !Ref PublicSubnets]]
        Project: "DT"

  #-----------------
  # Load Balancing 
  #-----------------
  LoadBalancing:
    Type: AWS::CloudFormation::Stack
    Properties:
      TemplateURL: !Sub 'https://s3.${AWS::Region}.amazonaws.com/sumu-stacks/dt/${release}/cloudformation/dt/load_balancing.yaml'
      Parameters:
        environment: !Ref environment
        release: !Ref release
        VpcId: !Ref VpcId
        PublicSubnets: !Join [",", !Split [" ", !Ref PublicSubnets]]

  EcsCluster:
    Type: AWS::CloudFormation::Stack
    Properties:
      TemplateURL: !Sub 'https://s3.${AWS::Region}.amazonaws.com/sumu-stacks/dt/${release}/cloudformation/cluster/top.yaml'
      Parameters:
        Environment: !Ref environment
        VpcId: !Ref VpcId
        SubnetIds: !Join [",", !Split [" ", !Ref PublicSubnets]]
        Project: "DT"

  #----------------------
  # ECS Tasks & Services
  #----------------------

  # Game Server
  TaskDefinition:
    Type: AWS::CloudFormation::Stack
    Properties:
      TemplateURL: !Sub 'https://s3.${AWS::Region}.amazonaws.com/sumu-stacks/dt/${release}/cloudformation/dt/server_task.yaml'
      Parameters:
        environment: !Ref environment
        LogGroupName: !Ref LogGroup
        DockerTag: !Ref DockerTag


  EcsService:
    DependsOn: LoadBalancing
    Type: AWS::ECS::Service
    Properties:
      Cluster: !GetAtt EcsCluster.Outputs.Cluster
      DesiredCount: 1
      TaskDefinition: !GetAtt TaskDefinition.Outputs.TaskArn

  # Auth Server
  AuthTaskDefinition:
    Type: AWS::CloudFormation::Stack
    Properties:
      TemplateURL: !Sub 'https://s3.${AWS::Region}.amazonaws.com/sumu-stacks/dt/${release}/cloudformation/dt/auth_task.yaml'
      Parameters:
        environment: !Ref environment
        LogGroupName: !Ref LogGroup
        DockerTag: !Ref DockerTag
        RedisHostname: !GetAtt RedisCache.Outputs.Endpoint
  
  AuthService:
    Type: AWS::ECS::Service
    Properties:
      Cluster: !GetAtt EcsCluster.Outputs.Cluster
      DesiredCount: 1
      TaskDefinition: !GetAtt AuthTaskDefinition.Outputs.TaskArn