template.yml

Resources:
  SQSQueue:
    Type: "AWS::SQS::Queue"
    Properties:
      QueueName: STAGE_NAME-QUEUE_NAME

  ProxyApi:
    Type: AWS::ApiGateway::RestApi
    Properties:
      Name: STAGE_NAME-QUEUE_NAME-ApiGateway

  APIGatewayResource:
    Type: AWS::ApiGateway::Resource
    Properties:
      ParentId:
        Fn::GetAtt:
          - "ProxyApi"
          - "RootResourceId"
      PathPart: "API_ENDPOINT"
      RestApiId:
        Ref: ProxyApi

  SQSAPIMethod:
    Type: AWS::ApiGateway::Method
    DependsOn: SQSQueue
    Properties:
      RestApiId:
        Ref: ProxyApi
      ResourceId:
        Ref: APIGatewayResource
      HttpMethod: "POST"
      MethodResponses:
        -
          StatusCode: "200"
          ResponseParameters:
            "method.response.header.Access-Control-Allow-Origin": true
      AuthorizationType: "NONE"
      Integration:
        Type: AWS
        Credentials: !Sub "${APIGatewaySQSIAM.Arn}"
        RequestParameters:
          "integration.request.header.Content-Type": "'application/x-www-form-urlencoded'"
        IntegrationHttpMethod: POST
        RequestTemplates:
          "application/json": "Action=SendMessage&MessageBody=$input.body"
        PassthroughBehavior: Never
        IntegrationResponses:
          -
            StatusCode: "200"
            ResponseParameters:
              "method.response.header.Access-Control-Allow-Origin": "'*'"
            ResponseTemplates:
              "application/json": ""
        Uri: !Sub arn:aws:apigateway:us-east-1:sqs:path/${AWS::AccountId}/${SQSQueue.QueueName}

  APIGatewayDeployment: 
    Type: AWS::ApiGateway::Deployment
    DependsOn: SQSAPIMethod
    Properties: 
      RestApiId: !Sub "${ProxyApi}"
      StageName: STAGE_NAME

  APIGatewaySQSIAM:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
          - Effect: Allow
            Principal:
              Service:
                - apigateway.amazonaws.com
            Action: sts:AssumeRole
      Policies:
        - 
          PolicyName: STAGE_NAME-QUEUE_NAME-policy
          PolicyDocument:
            Version: '2012-10-17'
            Statement:
              - Effect: Allow
                Resource: "*"
                Action:
                  - logs:CreateLogGroup
                  - logs:CreateLogStream
                  - logs:PutLogEvents
              - Effect: Allow
                Resource:
                  - !Sub "${SQSQueue.Arn}"
                Action:
                  - "sqs:SendMessage"

Outputs:
  ApiGwUrl:
    Value: !Sub "https://${ProxyApi}.execute-api.${AWS::Region}.amazonaws.com/STAGE_NAME/API_ENDPOINT"