workspace extends ../common/model/styles.dsl {
    name "Multiregion/multizone"
    description "Multiregion/multizone C4 model"

    !identifiers hierarchical
    model {

        user = person "User"

        regionalKafka = softwareSystem "Regional Kafka" {
            this -> this "Replication" "Kafka" "Replication"
        }

        tango = softwareSystem "Tango" {
            mobileApp = container "Mobile App"
        }

        domain = softwareSystem "Domain" {
            persistentStorage = container "Persistent storage" {
                tags "persistentStorage"
                technology "Aerospike/MySQL/ScyllaDb"
                this -> this "Replication" "SQL" "Replication"
            }

            cache = container "Cache" {
                tags "cache"
                technology "Redis"
            }

            domainKafka = container "Domain Kafka" {
                tags "Kafka"
            }

            internalServices = container "Internal services" {
                tags "Internal"
                -> cache "Cache data"
                -> persistentStorage "Store persistent data"
                -> domainKafka "Consumers/Produces"
                -> regionalKafka "Consumers/Produces"
            }

            api = container "API" {
                tags "API"
                -> internalServices "Handle API calls/events"
                user -> this "Uses"
            }
            
        }


        production = deploymentEnvironment "Multiregion" {
            multiRegionGroup = deploymentGroup "Multiregion group"
            domainAGroup = deploymentGroup "Domain A group"
            domainBGroup = deploymentGroup "Domain B group"
            regionAGroup = deploymentGroup "Region A group"
            regionBGroup = deploymentGroup "Region B group"

            multiRegionInfrastructure = deploymentNode "Multiregion infrastructure" {
                apiGateway = infrastructureNode "Multiregion API Gateway"
            }

            mobileDevice = deploymentNode "Customer's mobile device" "" "iOS or Android" {
                app = containerInstance tango.mobileApp
            }
            
            regionA = deploymentNode "Region A" {

                infra = deploymentNode "Region infrastructure" {
                    apiGateway = infrastructureNode "Region API Gateway"
                    kafka = softwareSystemInstance regionalKafka regionAGroup,multiRegionGroup
                }

                domainA = deploymentNode "Domain A" {
                    apiGateway = infrastructureNode "Domain API Gateway" regionAGroup
                    api = containerInstance domain.api regionAGroup
                    internal = deploymentNode "Internal area" {
                        containerInstance domain.domainKafka regionAGroup
                        services = containerInstance domain.internalServices regionAGroup
                        containerInstance domain.cache regionAGroup
                        containerInstance domain.persistentStorage  domainAGroup 
                    }
                    apiGateway -> api 
                }

                domainB = deploymentNode "Domain B" {
                    apiGateway = infrastructureNode "Domain API Gateway" regionAGroup
                    api = containerInstance domain.api regionAGroup
                    internal = deploymentNode "Internal area" {
                        containerInstance domain.domainKafka regionAGroup
                        services = containerInstance domain.internalServices regionAGroup
                        containerInstance domain.cache regionAGroup
                        containerInstance domain.persistentStorage domainBGroup
                    }
                    apiGateway -> api 
                }

                infra.apiGateway -> domainA.apiGateway 
                infra.apiGateway -> domainB.apiGateway
            }  

            regionB = deploymentNode "Region B" {

                infra = deploymentNode "Region infrastructure" {
                    apiGateway = infrastructureNode "Region API Gateway"
                    kafka = softwareSystemInstance regionalKafka regionBGroup,multiRegionGroup
                }

                domainA = deploymentNode "Domain A" {
                    apiGateway = infrastructureNode "Domain API Gateway" regionBGroup
                    api = containerInstance domain.api regionBGroup
                    deploymentNode "Internal area" {
                        containerInstance domain.domainKafka regionBGroup
                        internal = containerInstance domain.internalServices regionBGroup
                        containerInstance domain.cache regionBGroup
                        containerInstance domain.persistentStorage  domainAGroup 
                    }
                    apiGateway -> api 
                }

                domainB = deploymentNode "Domain B" {
                    apiGateway = infrastructureNode "Domain API  Gateway" regionBGroup
                    api = containerInstance domain.api regionBGroup
                    deploymentNode "Internal area" {
                        containerInstance domain.domainKafka regionBGroup "Kafka"
                        internal = containerInstance domain.internalServices regionBGroup
                        containerInstance domain.cache regionBGroup
                        containerInstance domain.persistentStorage domainBGroup
                    }
                    apiGateway -> api 
                }

                infra.apiGateway -> domainA.apiGateway 
                infra.apiGateway -> domainB.apiGateway
            }  

            mobileDevice.app -> multiRegionInfrastructure.apiGateway 
            multiRegionInfrastructure.apiGateway -> regionA.infra.apiGateway 
            multiRegionInfrastructure.apiGateway -> regionB.infra.apiGateway 

        }
        
    }

    views {

        systemLandscape "SystemLandscape" "Multiregion" {
            include *
            autoLayout
        }



        deployment * production {
            include *
            autolayout
        }

    }

}