Parameters:
  CorsOrigin:
    Default: ''
    Type: String
    Description: (Optional) Cross-origin resource sharing (CORS) Origin. You can specify a single origin, all "*" or leave empty and no CORS will be applied.
    MaxLength: 250
  TableName:
    AllowedPattern: ^[A-Za-z_]+$
    ConstraintDescription: Required. Can be characters and underscore only. No numbers or special characters allowed.
    Description: (Required) The name of the new DynamoDB table you want to create and save to. Minimum 3 characters
    MaxLength: 50
    Default: yourTableName
    MinLength: 3
    Type: String
AWSTemplateFormatVersion: '2010-09-09'
Outputs:
  DynamoDBTableArn:
    Description: The ARN of your DynamoDB Table
    Value:
      Fn::GetAtt:
      - DynamoDBTable
      - Arn
  ApiUrl:
    Description: The URL of the API Gateway to which you send a PUT request with edited data to update an item in your DynamoDB Table. Don't forget to change the some-id to an id in your database.
    Value:
      Fn::Sub: https://${UpdateApi}.execute-api.${AWS::Region}.amazonaws.com/prod/${TableName}/some-id
  DynamoDBTableStreamArn:
    Description: The ARN of your DynamoDB Table Stream
    Value:
      Fn::GetAtt:
      - DynamoDBTable
      - StreamArn
Conditions:
  IsCorsDefined:
    Fn::Not:
    - Fn::Equals:
      - Ref: CorsOrigin
      - ''
Transform: AWS::Serverless-2016-10-31
Resources:
  UpdateApi:
    Type: AWS::Serverless::Api
    Properties:
      DefinitionBody:
        info:
          title:
            Ref: AWS::StackName
        paths:
          /{items}/{id}:
            put:
              x-amazon-apigateway-integration:
                httpMethod: POST
                type: aws_proxy
                uri:
                  Fn::Sub: arn:aws:apigateway:${AWS::Region}:lambda:path/2015-03-31/functions/${UpdateLambda.Arn}/invocations
              responses: {}
              parameters:
              - required: true
                type: string
                name: items
                in: path
              - required: true
                type: string
                name: id
                in: path
        swagger: 2.0
      StageName: prod
  DynamoDBTable:
    Type: AWS::DynamoDB::Table
    Properties:
      KeySchema:
      - KeyType: HASH
        AttributeName:
          Fn::Sub: ${TableName}Id
      StreamSpecification:
        StreamViewType: NEW_IMAGE
      TableName:
        Ref: TableName
      AttributeDefinitions:
      - AttributeName:
          Fn::Sub: ${TableName}Id
        AttributeType: S
      ProvisionedThroughput:
        WriteCapacityUnits: 1
        ReadCapacityUnits: 1
  UpdateLambda:
    Type: AWS::Serverless::Function
    Properties:
      Environment:
        Variables:
          IS_CORS: IsCorsDefined
          TABLE_NAME:
            Ref: TableName
          PRIMARY_KEY:
            Fn::Sub: ${TableName}Id
          CORS_ORIGIN:
            Ref: CorsOrigin
      Handler: index.handler
      Policies:
      - Statement:
        - Action:
          - dynamodb:GetItem
          - dynamodb:DeleteItem
          - dynamodb:PutItem
          - dynamodb:Scan
          - dynamodb:Query
          - dynamodb:UpdateItem
          - dynamodb:BatchWriteItem
          - dynamodb:BatchGetItem
          Resource:
            Fn::Sub:
            - arn:${AWS::Partition}:dynamodb:${AWS::Region}:${AWS::AccountId}:table/${tableName}
            - tableName:
                Ref: TableName
          Effect: Allow
      CodeUri:
        Bucket: <%REPO_BUCKET%>
        Key: 70d2c77a-a692-40b1-8c78-4eb25649afcf
      Runtime: nodejs10.x
      Events:
        Api:
          Type: Api
          Properties:
            Path: /{items}/{id}
            RestApiId:
              Ref: UpdateApi
            Method: PUT