---
AWSTemplateFormatVersion: '2010-09-09'
Description: 'Continuous Delivery pipeline for static website'
Parameters:
  GitHubOwner:
    Description: 'The owner of the GitHub repository.'
    Type: String
  GitHubOAuthToken:
    Description: 'The OAuthToken of the GitHub user.'
    Type: String
  GitHubRepo:
    Description: 'The GitHub repository.'
    Type: String
  VPC:
    Description: 'The VPC Id to launch the EC2 instance in.'
    Type: AWS::EC2::VPC::Id
  Subnet:
    Description: 'The Subnet Id to launch the EC2 instance in.'
    Type: AWS::EC2::Subnet::Id
Mappings:
  RegionMap:
    'ap-south-1':
      AMI: 'ami-cacbbea5'
    'eu-west-1':
      AMI: 'ami-d41d58a7'
    'ap-northeast-2':
      AMI: 'ami-a04297ce'
    'ap-northeast-1':
      AMI: 'ami-1a15c77b'
    'sa-east-1':
      AMI: 'ami-b777e4db'
    'ap-southeast-1':
      AMI: 'ami-7243e611'
    'ap-southeast-2':
      AMI: 'ami-55d4e436'
    'eu-central-1':
      AMI: 'ami-0044b96f'
    'us-east-1':
      AMI: 'ami-c481fad3'
    'us-east-2':
      AMI: 'ami-71ca9114'
    'us-west-1':
      AMI: 'ami-de347abe'
    'us-west-2':
      AMI: 'ami-b04e92d0'
Resources:
  ArtifactStore:
    Type: "AWS::S3::Bucket"
    Properties: 
      VersioningConfiguration:
        Status: Enabled
  CodePipelineIAMRole:
    Type: 'AWS::IAM::Role'
    Properties:
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
        - Effect: Allow
          Principal:
            Service:
            - 'codepipeline.amazonaws.com'
          Action:
          - 'sts:AssumeRole'
      Path: '/'
      Policies:
      - PolicyName: logs
        PolicyDocument:
          Version: '2012-10-17'
          Statement:
          - Action:
            - s3:GetObject
            - s3:GetObjectVersion
            - s3:GetBucketVersioning
            Resource: "*"
            Effect: Allow
          - Action:
            - s3:PutObject
            Resource:
            - arn:aws:s3:::codepipeline*
            - arn:aws:s3:::elasticbeanstalk*
            Effect: Allow
          - Action:
            - codecommit:CancelUploadArchive
            - codecommit:GetBranch
            - codecommit:GetCommit
            - codecommit:GetUploadArchiveStatus
            - codecommit:UploadArchive
            Resource: "*"
            Effect: Allow
          - Action:
            - codedeploy:CreateDeployment
            - codedeploy:GetApplicationRevision
            - codedeploy:GetDeployment
            - codedeploy:GetDeploymentConfig
            - codedeploy:RegisterApplicationRevision
            Resource: "*"
            Effect: Allow
          - Action:
            - elasticbeanstalk:*
            - ec2:*
            - elasticloadbalancing:*
            - autoscaling:*
            - cloudwatch:*
            - s3:*
            - sns:*
            - cloudformation:*
            - rds:*
            - sqs:*
            - ecs:*
            - iam:PassRole
            Resource: "*"
            Effect: Allow
          - Action:
            - lambda:InvokeFunction
            - lambda:ListFunctions
            Resource: "*"
            Effect: Allow
          - Action:
            - opsworks:CreateDeployment
            - opsworks:DescribeApps
            - opsworks:DescribeCommands
            - opsworks:DescribeDeployments
            - opsworks:DescribeInstances
            - opsworks:DescribeStacks
            - opsworks:UpdateApp
            - opsworks:UpdateStack
            Resource: "*"
            Effect: Allow
  CodePipeline:
    DependsOn:
      - EC2Instance
    Type: "AWS::CodePipeline::Pipeline"
    Properties:
      ArtifactStore:
        Location: !Ref ArtifactStore
        Type: S3
      RoleArn: !Sub '${CodePipelineIAMRole.Arn}'
      Stages:
        - Name: Source
          Actions: 
          - Name: Source
            ActionTypeId:
              Category: Source 
              Owner: ThirdParty 
              Version: 1 
              Provider: GitHub
            OutputArtifacts:
            - Name: staticwebsite
            Configuration:
              Owner: !Ref GitHubOwner
              Repo: !Ref GitHubRepo
              Branch: master
              OAuthToken: !Ref GitHubOAuthToken
        - Name: Deploy
          Actions:
          - Name: Deploy
            ActionTypeId:
              Category: Deploy 
              Owner: AWS 
              Version: 1 
              Provider: CodeDeploy
            InputArtifacts:
            - Name: staticwebsite
            Configuration:
              ApplicationName: !Ref Application
              DeploymentGroupName: !Ref DeploymentGroup
        - Name: Test
          Actions:
          - Name: Test
            ActionTypeId:
              Category: Invoke 
              Owner: AWS 
              Version: 1 
              Provider: Lambda
            Configuration:
              FunctionName: !Ref TestLambda
              UserParameters: !Sub 'http://${EC2Instance.PublicDnsName}'
  CodeDeployIAMRole:
    Type: 'AWS::IAM::Role'
    Properties:
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
        - Effect: Allow
          Principal:
            Service:
            - 'codedeploy.amazonaws.com'
          Action:
          - 'sts:AssumeRole'
      Path: '/'
      ManagedPolicyArns:
      - 'arn:aws:iam::aws:policy/service-role/AWSCodeDeployRole'
  Application:
    Type: "AWS::CodeDeploy::Application"
  DeploymentGroup:
    Type: "AWS::CodeDeploy::DeploymentGroup"
    Properties:
      ApplicationName: !Ref Application
      Ec2TagFilters:
        - Key: DeploymentGroup
          Type: KEY_AND_VALUE
          Value: !Ref AWS::StackName
      ServiceRoleArn: !Sub '${CodeDeployIAMRole.Arn}'
  SecurityGroup:
    Type: 'AWS::EC2::SecurityGroup'
    Properties:
      GroupDescription: 'static website'
      VpcId: !Ref VPC
      SecurityGroupIngress:
      - FromPort: 80
        ToPort: 80
        IpProtocol: tcp
        CidrIp: '0.0.0.0/0'
  EC2InstanceProfile:
    Type: 'AWS::IAM::InstanceProfile'
    Properties:
      Path: '/'
      Roles:
      - !Ref EC2InstanceIAMRole
  EC2InstanceIAMRole:
    Type: 'AWS::IAM::Role'
    Properties:
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
        - Effect: Allow
          Principal:
            Service:
            - 'ec2.amazonaws.com'
          Action:
          - 'sts:AssumeRole'
      Path: '/'
      ManagedPolicyArns:
      - 'arn:aws:iam::aws:policy/service-role/AmazonEC2RoleforAWSCodeDeploy'
  EC2Instance:
    Type: 'AWS::EC2::Instance'
    Properties:
      IamInstanceProfile: !Ref EC2InstanceProfile
      ImageId: !FindInMap [RegionMap, !Ref 'AWS::Region', AMI]
      InstanceType: 't2.micro'
      SecurityGroupIds:
      - !Ref SecurityGroup
      UserData:
        'Fn::Base64': !Sub |
          #!/bin/bash -x
          yum update -y && yum install -y ruby wget && wget https://aws-codedeploy-us-east-1.s3.amazonaws.com/latest/install && chmod +x ./install && ./install auto && service codedeploy-agent start
          /opt/aws/bin/cfn-signal -e $? --region ${AWS::Region} --stack ${AWS::StackName} --resource EC2Instance
      SubnetId: !Ref Subnet
      Tags:
      - Key: DeploymentGroup
        Value: !Ref AWS::StackName
      - Key: Name
        Value: !Ref AWS::StackName
    CreationPolicy:
      ResourceSignal:
        Count: 1
        Timeout: PT10M
  LambdaIAMRole:
    Type: 'AWS::IAM::Role'
    Properties:
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
        - Effect: Allow
          Principal:
            Service:
            - 'lambda.amazonaws.com'
          Action:
          - 'sts:AssumeRole'
      Path: '/'
      ManagedPolicyArns:
      - 'arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole'
      Policies:
      - PolicyName: codepipeline
        PolicyDocument:
          Version: '2012-10-17'
          Statement:
          - Action:
            - codepipeline:PutJobFailureResult
            - codepipeline:PutJobSuccessResult
            Resource: "*"
            Effect: Allow
  TestLambda:
    Type: "AWS::Lambda::Function"
    Properties: 
      Code:
        S3Bucket: 'codepipeline-codedeploy-example-lambda'
        S3Key: 'v2.zip'
      FunctionName: 'codepipeline_http_test'
      Handler: 'index.handler'
      MemorySize: 128
      Role: !Sub '${LambdaIAMRole.Arn}'
      Runtime: 'nodejs4.3'
      Timeout: 30
Outputs:
  URL:
    Description: 'The URL pointing to the static website.'
    Value: !Sub 'http://${EC2Instance.PublicDnsName}'