AWSTemplateFormatVersion: "2010-09-09"
Description: Common resources for application deployed to Lambda
Parameters:
  AppName:
    Type: String
    Description: Name of the application.
    MinLength: "1"
    MaxLength: "100"
Resources:
  CodeBuildTrustRole:
    Description: Creating service role in IAM for AWS CodeBuild
    Type: AWS::IAM::Role
    Properties:
      RoleName: !Sub "${AppName}-codebuild-role"
      AssumeRolePolicyDocument:
        Statement:
        - Effect: Allow
          Principal:
            Service: [codebuild.amazonaws.com]
          Action: sts:AssumeRole
      Path: /
  CodeBuildRolePolicy:
    Type: AWS::IAM::Policy
    DependsOn: CodeBuildTrustRole
    Description: Setting IAM policy for the service role for AWS CodeBuild
    Properties:
      PolicyName: CodeBuildRolePolicy
      PolicyDocument:
        Statement:
        - Effect: Allow
          Action: ["logs:CreateLogGroup", "logs:CreateLogStream", "logs:PutLogEvents"]
          Resource: ["*"]
        - Effect: Allow
          Resource: ["*"]
          Action: ["s3:*"]
        - Effect: Allow
          Resource: ["*"]
          Action: ["kms:GenerateDataKey*", "kms:Encrypt", "kms:Decrypt"]
        - Effect: Allow
          Resource: ["*"]
          Action: ["sns:SendMessage"]
      Roles: [!Ref CodeBuildTrustRole]
  CloudFormationTrustRole:
    Description: Creating service role in IAM for AWS CloudFormation
    Type: AWS::IAM::Role
    Properties:
      RoleName: !Sub "${AppName}-cloudformation-role"
      AssumeRolePolicyDocument:
        Statement:
        - Effect: Allow
          Principal:
            Service: [cloudformation.amazonaws.com]
          Action: sts:AssumeRole
      Path: /
  CloudFormationRolePolicy:
    Type: AWS::IAM::Policy
    DependsOn: CloudFormationTrustRole
    Description: Setting IAM policy for the service role for AWS CloudFormation
    Properties:
      PolicyName: CloudFormationRolePolicy
      PolicyDocument:
        Statement:
        - Action: ["s3:GetObject", "s3:GetObjectVersion", "s3:GetBucketVersioning"]
          Resource: "*"
          Effect: Allow
        - Action: ["s3:PutObject"]
          Resource: ["arn:aws:s3:::codepipeline*"]
          Effect: Allow
        - Action: ["lambda:*"]
          Resource: !Sub "arn:aws:lambda:${AWS::Region}:${AWS::AccountId}:function:*"
          Effect: Allow
        - Action: ["apigateway:*"]
          Resource: !Sub "arn:aws:apigateway:${AWS::Region}::*"
          Effect: Allow
        - Action: ["iam:GetRole", "iam:CreateRole", "iam:DeleteRole"]
          Resource: !Sub "arn:aws:iam::${AWS::AccountId}:role/${AppName}-*"
          Effect: Allow
        - Action: ["iam:AttachRolePolicy", "iam:DetachRolePolicy"]
          Resource: !Sub "arn:aws:iam::${AWS::AccountId}:role/${AppName}-*"
          Effect: Allow
        - Action: ["iam:PassRole"]
          Resource: ["*"]
          Effect: Allow
        - Action: ["cloudformation:CreateChangeSet"]
          Resource: !Sub "arn:aws:cloudformation:${AWS::Region}:aws:transform/Serverless-2016-10-31"
          Effect: Allow
      Roles: [!Ref CloudFormationTrustRole]
  CodePipelineTrustRole:
    Description: Creating service role in IAM for AWS CodePipeline
    Type: AWS::IAM::Role
    Properties:
      RoleName: !Sub "${AppName}-codepipeline-role"
      AssumeRolePolicyDocument:
        Statement:
        - Effect: Allow
          Principal:
            Service: [codepipeline.amazonaws.com]
          Action: sts:AssumeRole
      Path: /
  CodePipelineRolePolicy:
    Type: AWS::IAM::Policy
    DependsOn: CodePipelineTrustRole
    Description: Setting IAM policy for the service role for AWS CodePipeline
    Properties:
      PolicyName: CodePipelineRolePolicy
      PolicyDocument:
        Statement:
        - Action: ["s3:GetObject", "s3:GetObjectVersion", "s3:GetBucketVersioning"]
          Resource: "*"
          Effect: Allow
        - Action: ["s3:PutObject"]
          Resource: ["arn:aws:s3:::codepipeline*"]
          Effect: Allow
        - Action: ["codebuild:StartBuild", "codebuild:BatchGetBuilds"]
          Resource: "*"
          Effect: Allow
        - Action: ["cloudwatch:*", "s3:*", "sns:*", "cloudformation:*", "rds:*", "sqs:*", "iam:PassRole"]
          Resource: "*"
          Effect: Allow
        - Action: ["lambda:InvokeFunction", "lambda:ListFunctions"]
          Resource: "*"
          Effect: Allow
      Roles: [!Ref CodePipelineTrustRole]
Outputs:
  CodePipelineRole:
    Description: "Role for code pipeline"
    Value: !GetAtt CodePipelineTrustRole.Arn
  CloudformationDeployRole:
    Description: "Role for cloudformation to deploy with."
    Value: !GetAtt CloudFormationTrustRole.Arn
  CodeBuildRole:
    Description: "Role for code build to build"
    Value: !GetAtt CodeBuildTrustRole.Arn