---
AWSTemplateFormatVersion: '2010-09-09'
Description: >-
  (WWPS-GLS-WF-GWFCORE-EFS) Creates EFS file system and mount targets to a list of subnets

Parameters:
  VpcId:
    Type: AWS::EC2::VPC::Id
    Description: 'The VPC to create security groups and deploy AWS Batch to. NOTE: Must be the same VPC as the provided subnet IDs.'
  SubnetIds:
    Type: List<AWS::EC2::Subnet::Id>
    Description: 'Subnets you want your batch compute environment to launch in. We recommend private subnets. NOTE: Must be from the VPC provided.'
  NumberOfSubnets:
    Type: Number
    Description: Number of subnets to launch into. Should correspond to the length of Subnet Ids
    MinValue: 1
    MaxValue: 6

Conditions:
  2SubnetCondition: !Or
    - !Equals [!Ref 'NumberOfSubnets', '2']
    - !Condition '3SubnetCondition'
  3SubnetCondition: !Or
    - !Equals [!Ref 'NumberOfSubnets', '3']
    - !Condition '4SubnetCondition'
  4SubnetCondition: !Or
    - !Equals [!Ref 'NumberOfSubnets', '4']
    - !Condition '5SubnetCondition'
  5SubnetCondition: !Or
    - !Equals [!Ref 'NumberOfSubnets', '5']
    - !Condition '6SubnetCondition'
  6SubnetCondition: !Equals [!Ref NumberOfSubnets, '6']

Resources:
  SharedDataFileSystem:
    Type: AWS::EFS::FileSystem
    Properties:
      PerformanceMode: generalPurpose
      Encrypted: true
      FileSystemTags:
      - Key: Name
        Value: SharedDataGenomics

  MountTargetSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      VpcId: !Ref VpcId
      GroupDescription: Security group for mount target
      SecurityGroupIngress:
      - IpProtocol: tcp
        FromPort: 2049
        ToPort: 2049
        CidrIp: 0.0.0.0/0

  MountTargetSubnet1:
    Type: AWS::EFS::MountTarget
    Properties:
      FileSystemId: !Ref SharedDataFileSystem
      SubnetId: !Select [0, !Ref SubnetIds]
      SecurityGroups: 
      - !Ref MountTargetSecurityGroup

  MountTargetSubnet2:
    Type: AWS::EFS::MountTarget
    Condition: 2SubnetCondition
    Properties:
      FileSystemId: !Ref SharedDataFileSystem
      SubnetId: !Select [1, !Ref SubnetIds]
      SecurityGroups: 
      - !Ref MountTargetSecurityGroup

  MountTargetSubnet3:
    Type: AWS::EFS::MountTarget
    Condition: 3SubnetCondition
    Properties:
      FileSystemId: !Ref SharedDataFileSystem
      SubnetId: !Select [2, !Ref SubnetIds]
      SecurityGroups: 
      - !Ref MountTargetSecurityGroup

  MountTargetSubnet4:
    Type: AWS::EFS::MountTarget
    Condition: 4SubnetCondition
    Properties:
      FileSystemId: !Ref SharedDataFileSystem
      SubnetId: !Select [3, !Ref SubnetIds]
      SecurityGroups: 
      - !Ref MountTargetSecurityGroup

  MountTargetSubnet5:
    Type: AWS::EFS::MountTarget
    Condition: 5SubnetCondition
    Properties:
      FileSystemId: !Ref SharedDataFileSystem
      SubnetId: !Select [4, !Ref SubnetIds]
      SecurityGroups: 
      - !Ref MountTargetSecurityGroup

  MountTargetSubnet6:
    Type: AWS::EFS::MountTarget
    Condition: 6SubnetCondition
    Properties:
      FileSystemId: !Ref SharedDataFileSystem
      SubnetId: !Select [5, !Ref SubnetIds]
      SecurityGroups: 
      - !Ref MountTargetSecurityGroup

Outputs:
  EfsId:
    Value: !Ref SharedDataFileSystem
    Description: EFS ID