---
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#  Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except in compliance
#  with the License. A copy of the License is located at
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#      http://www.apache.org/licenses/LICENSE-2.0
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#  or in the 'license' file accompanying this file. This file is distributed on an 'AS IS' BASIS, WITHOUT WARRANTIES
#  OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions
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AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31

Description: CDF Asset Library Service

Parameters:
  PrivateApiGatewayVPCEndpoint:
    Description: VPC endpoint required for private api gateway support
    Type: String

  ApplicationConfigurationOverride:
    Description: This allows you to override any application configuration.  It should consists of a text-based content with a structure and syntax comprising key–value pairs for properties. Any configurations contained in this will override the configurations found and merged from the default .env files.
    Type: String

  Environment:
    Description: Name of environment.  Used to name the created resources.
    Type: String
    MinLength: 1

  VpcId:
    Description: ID of VPC to deploy the Asset Library into
    Type: String
  CDFSecurityGroupId:
    Description: ID of an existing CDF security group to deploy the Asset Library into (required if running full mode, or private API)
    Type: String
  PrivateSubNetIds:
    Description: Comma delimited list of private subnetIds to deploy the Asset Library into
    Type: String
  Mode:
    Description: Run in 'lite' mode which includes device registry only, or 'full' mode which augments the device registry with an additional datastore
    Type: String
    Default: full
    AllowedValues:
      - full
      - lite
    MinLength: 1

  TemplateSnippetS3UriBase:
    Description: |
      S3 uri of directory where template snippets are stored for the account.
    Type: String
    MinLength: 1

  ApiGatewayDefinitionTemplate:
    Description: |
      Name of the API Gateway Cloudformation definition along with the authorization method to use.  Use one of the provided
      templates to implement no auth, private, api key, lambda request, lamdba token, or Cognito auth, or modify one to meet your own
      authentization requirements.  The template must exist within the provided TemplateSnippetS3UriBase location.
    Type: String
    MinLength: 1

  AuthType:
    Description: Authorization type to apply to the API gateway endpoints
    Type: String
    Default: None
    AllowedValues:
      - None
      - Private
      - Cognito
      - LambdaRequest
      - LambdaToken
      - ApiKey
      - IAM
    MinLength: 1

  CognitoUserPoolArn:
    Description: Cognito user pool arn.  Only required if AuthType is set to 'Cognito'.
    Type: String
    Default: 'N/A'

  AuthorizerFunctionArn:
    Description: Lambda authorizer function arn.  Only required if AuthType is set to 'LambdaRequest' or 'LambdaToken'.
    Type: String
    Default: 'N/A'

  # Neptune Parameters
  NeptuneDbInstanceType:
    Description: >
      Neptune DB instance type. The list of available instance types for your region can be found here: 
      https://aws.amazon.com/neptune/pricing/
    Type: String
    AllowedPattern: "^db\\.[tr]\\d+[a-z0-9]*\\.[a-z0-9]*$"
    ConstraintDescription: Must be a valid Neptune instance type.

  CustomResourceVPCLambdaArn:
    Description: Custom resource lambda arn with access to vpc
    Type: String
    MinLength: 1

  EnableApiGatewayAccessLogs:
    Description: Enales API gateway Access Logging, defaults to false if not specified.
    Type: String
    Default: false
    AllowedValues:
      - true
      - false
    MinLength: 1

  NeptuneSnapshotIdentifier:
    Type: String
    Description: Specifies the identifier for an existing DB cluster snapshot to restore. Refer to Neptune documentation on its use.

Conditions:
  DeployFullMode: !Equals [!Ref Mode, 'full']
  UsingVPCForAuth: !Equals [!Ref AuthType, 'Private']

Resources:
  Neptune:
    Condition: DeployFullMode
    Type: AWS::CloudFormation::Stack
    Properties:
      TemplateURL: ./cfn-neptune.yaml
      Parameters:
        Environment: !Ref Environment
        DbInstanceType: !Ref NeptuneDbInstanceType
        PrivateSubNetIds: !Ref PrivateSubNetIds
        CDFSecurityGroupId: !Ref CDFSecurityGroupId
        VpcId: !Ref VpcId
        CustomResourceVPCLambdaArn: !Ref CustomResourceVPCLambdaArn
        SnapshotIdentifier: !Ref NeptuneSnapshotIdentifier
      TimeoutInMinutes: 60

  AssetLibrary:
    Type: AWS::CloudFormation::Stack
    Properties:
      TemplateURL: ./cfn-assetLibrary.yaml
      Parameters:
        ApplicationConfigurationOverride: !Ref ApplicationConfigurationOverride
        PrivateApiGatewayVPCEndpoint:
          !If [UsingVPCForAuth, !Ref PrivateApiGatewayVPCEndpoint, 'N/A']
        Environment: !Ref Environment
        VpcId: !Ref VpcId
        CDFSecurityGroupId: !Ref CDFSecurityGroupId
        PrivateSubNetIds: !Ref PrivateSubNetIds
        Mode: !Ref Mode
        TemplateSnippetS3UriBase: !Ref TemplateSnippetS3UriBase
        ApiGatewayDefinitionTemplate: !Ref ApiGatewayDefinitionTemplate
        CognitoUserPoolArn: !Ref CognitoUserPoolArn
        AuthorizerFunctionArn: !Ref AuthorizerFunctionArn
        AuthType: !Ref AuthType
        NeptuneURL: !If [DeployFullMode, !GetAtt Neptune.Outputs.GremlinEndpoint, '']
        CustomResourceVPCLambdaArn: !Ref CustomResourceVPCLambdaArn
        EnableApiGatewayAccessLogs: !Ref EnableApiGatewayAccessLogs
      TimeoutInMinutes: 60

Outputs:
  RestApiFunctionName:
    Description: Asset library lambda function name
    Value: !GetAtt AssetLibrary.Outputs.RestApiFunctionName
  ApiGatewayUrl:
    Description: URL for application
    Value: !GetAtt AssetLibrary.Outputs.ApiGatewayUrl
  ApiGatewayHost:
    Description: Host for application
    Value: !GetAtt AssetLibrary.Outputs.ApiGatewayHost
  NeptuneURL:
    Description: Neptune Url
    Value: !GetAtt Neptune.Outputs.GremlinEndpoint