AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31

Parameters:
  NonProdAccount:
    Description: AWS AccountNumber for the Non Prod Account
    Type: Number

Resources:
  MilagesApi:
    Type: AWS::Serverless::Api
    Properties:
      StageName: Prod
      DefinitionBody:
        swagger: "2.0"
        info:
          version: "1.0"
          title: "sam-loyalty"
        paths:
          /airmiles/{bookingid}:
            get:
              responses: {}
              x-amazon-apigateway-integration:
                uri: !Sub "arn:aws:apigateway:${AWS::Region}:lambda:path/2015-03-31/functions/${GetAirmileFunction.Arn}/invocations"
                passthroughBehavior: "when_no_match"
                httpMethod: "POST"
                type: "aws_proxy" 
            options:
              consumes:
              - "application/json"
              produces:
              - "application/json"
              parameters:
              - name: "bookingid"
                in: "path"
                required: true
                type: "string"
              responses:
                "200":
                  description: "200 response"
                  headers:
                    Access-Control-Allow-Origin:
                      type: "string"
                    Access-Control-Allow-Methods:
                      type: "string"
                    Access-Control-Allow-Headers:
                      type: "string"
              x-amazon-apigateway-integration:
                responses:
                  default:
                    statusCode: "200"
                    responseParameters:
                      method.response.header.Access-Control-Allow-Methods: "'GET,OPTIONS'"
                      method.response.header.Access-Control-Allow-Headers: "'Content-Type,X-Amz-Date,Authorization,X-Api-Key,X-Amz-Security-Token'"
                      method.response.header.Access-Control-Allow-Origin: "'*'"
                requestTemplates:
                  application/json: "{\"statusCode\": 200}"
                passthroughBehavior: "when_no_match"
                type: "mock"

  CustomLookup:
    Type: Custom::Lookup
    Properties:
      ServiceToken: !ImportValue custom-lookup-exports
      loglevel: info

  LambdaResourcePolicy:
    Type: AWS::Lambda::Permission
    Properties:
      FunctionName: !GetAtt PostAirmileFunction.Arn
      Principal: sns.amazonaws.com
      Action: lambda:InvokeFunction
      SourceArn : !GetAtt CustomLookup.booking-lambda-BookingTopicArn

  PostAirmileFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: post-airmiles-lambda.handler
      Runtime: python3.6
      Policies: AmazonDynamoDBFullAccess
      Events:
        SubmitBooking:
          Type: SNS
          Properties:
            Topic:
              !GetAtt CustomLookup.booking-lambda-BookingTopicArn
      Environment:
        Variables: 
          TABLE_NAME: !Ref AirmileDBTable

  GetAirmileFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: get-airmiles-lambda.handler
      Runtime: python3.6
      Policies: AmazonDynamoDBFullAccess
      Environment:
        Variables: 
          TABLE_NAME: !Ref AirmileDBTable
      Events:
        Api:
          Type: Api
          Properties:
            RestApiId: !Ref MilagesApi
            Path: /airmiles/{bookingid}
            Method: get

  AirmileDBTable:
     Type: AWS::DynamoDB::Table
     Properties: 
      AttributeDefinitions: 
        - 
          AttributeName: "booking_number"
          AttributeType: "S"
      KeySchema: 
        - AttributeName: "booking_number"
          KeyType: HASH
      ProvisionedThroughput: 
         ReadCapacityUnits: 5
         WriteCapacityUnits: 5

Outputs:
    AirmileAPI:
        Description: Airmile API Endpoint
        Value: !Sub 'https://${MilagesApi}.execute-api.${AWS::Region}.amazonaws.com'
        Export:
            Name: AirmileAPI