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

Description:
  Sample Lex V2 Zip Code Bot using the CloudFormation Custom Resource from an
  Serverless Application Repository (SAR) nested stack

Parameters:
  SarAppArn:
    Description: >-
      ARN of SAR Lex CloudFormation Custom Resource application
    Type: String
    Default: arn:aws:serverlessrepo:us-east-1:777566285978:applications/lex-v2-cfn-cr
  SarAppVersion:
    Description: >-
      Semantic version of SAR Lex CloudFormation Custom Resource application
    Type: String
    Default: 0.3.0

Resources:
  # this deploys the Custom Resource as a nested CloudFormation stack
  LexV2CfnCr:
    Type: AWS::Serverless::Application
    Properties:
      Location:
        ApplicationId: !Ref SarAppArn
        SemanticVersion: !Ref SarAppVersion
      Parameters:
        # Custom Resource Lambda log level
        LogLevel: DEBUG

  LexBot:
    Type: Custom::LexBot
    Properties:
      # this references the Lambda function created by the Custom Resource stack
      ServiceToken: !GetAtt LexV2CfnCr.Outputs.LexV2CfnCrFunctionArn
      botName: !Sub "${AWS::StackName}-ZipCodeUpdate"
      dataPrivacy:
        childDirected: True
      description: Test bot deployed using CloudFormation Custom Resource
      idleSessionTTLInSeconds: 300
      # this references the role created by the Custom Resource stack
      roleArn: !GetAtt LexV2CfnCr.Outputs.LexServiceLinkedRole
      CR.botLocales:
        - localeId: en_US
          nluIntentConfidenceThreshold: 0.40
          voiceSettings:
            voiceId: Salli
          CR.slotTypes:
            - slotTypeName: ZipCodeType
              parentSlotTypeSignature: AMAZON.AlphaNumeric
              valueSelectionSetting:
                resolutionStrategy: OriginalValue
                regexFilter:
                  pattern: '[0-9]{8}'
          CR.intents:
            # The Fallback intent is automatically created by the Lex service
            # This will update the default fallback intent
            - intentName: FallbackIntent
              description: Default fallback intent when no other intent matches
              intentClosingSetting:
                closingResponse:
                  messageGroups:
                    - message:
                        plainTextMessage:
                          value: Sorry I am having trouble understanding.
            - intentName: UpdateZipCode
              sampleUtterances:
                - utterance: i want to change my zip code
                - utterance: i have a new zip code
                - utterance: my new zip code is {ZipCode}
              CR.slots:
                - slotName: ZipCode
                  CR.slotTypeName: ZipCodeType
                  valueElicitationSetting:
                    slotConstraint: Required
                    promptSpecification:
                      messageGroups:
                        - message:
                            plainTextMessage:
                              value: What is your zipcode?
                      maxRetries: 2
                      allowInterrupt: true

  LexBotVersion:
    # Bot versions are deleted by the Bot on Stack Deletions
    DeletionPolicy: Retain
    # Version number changes between updates which cause a CloudFormation
    # delete event since the version number is the physical resource ID.
    # The following policies prevents deletion events
    UpdateReplacePolicy: Retain
    Type: Custom::LexBotVersion
    Properties:
      ServiceToken: !GetAtt LexV2CfnCr.Outputs.LexV2CfnCrFunctionArn
      botId: !Ref LexBot
      CR.botLocaleIds: !GetAtt LexBot.botLocaleIds
      CR.lastUpdatedDateTime: !GetAtt LexBot.lastUpdatedDateTime

  LexBotAlias:
    # Alias is deleted by the Bot on Stack Deletions
    DeletionPolicy: Retain
    Type: Custom::LexBotAlias
    Properties:
      ServiceToken: !GetAtt LexV2CfnCr.Outputs.LexV2CfnCrFunctionArn
      botId: !Ref LexBot
      botAliasName: live
      botVersion: !Ref LexBotVersion
      botAliasLocaleSettings:
        en_US:
          enabled: True

Outputs:
  LexBotId:
    Description: Lex Bot ID
    Value: !Ref LexBot

  LexBotLocaleIds:
    Description: Lex Bot Locale IDs
    Value: !Join [",", !GetAtt LexBot.botLocaleIds]

  LexBotLatestVersion:
    Description: Latest Lex Bot Version ID
    Value: !Ref LexBotVersion

  LexBotAliasId:
    Description: Lex Bot Alias ID
    Value: !Ref LexBotAlias