workspace extends ../common/finance-common-model.dsl {
    name "Offer management system "
    description "Offer management system is responsible for managing offers, changing and updating prices in stores"

    model {

        cronSystem = softwareSystem "Cron" "Cron trigger" {
            tags "Cron" "notOwned"
        }

        schedulingSystem = softwareSystem "Scheduling system" {
            tags "notOwned"
        }

        exchangeRatesExternalSystem = softwareSystem "Exchange rates external system" {
            tags "External"
        }

        externalStoresSystem = softwareSystem "External stores systems" {
            description "AppStore, PlayMarket, etc."
            tags "External"
        }

        !extend offerManagementSystem {

            priceTemplatorDb = container "PriceTemplatorDatabase" {
                description "Stores price templates"
                technology "MySQL"
                tags "Google Cloud Platform - Compute Engine" "Database" "MySQL" 
            }

            priceTemplator = container "PriceTemplator" {
                description "Responsible for managing offer tires to simplify currency exchange and  offer management in stores"
                tags "Google Cloud Platform - Kubernetes Engine"
                technology "Java"

                -> priceTemplatorDb "Stores/reads pricing templates" "SQL"
                user -> this "Get offer local price" "HTTP"
            }

            offerManagerDb = container "OfferManagerDatabase" {
                description "Stores offers and corresponding data (Finance DB)"
                technology "MySQL"
                tags "Google Cloud Platform - Compute Engine" "Database" "MySQL" "FinanceDB"
            }

            offerManagerKV = container "OfferManagerKV" {
                description "Cache offers"
                technology "Aerospike"
                tags "Google Cloud Platform - Compute Engine" "Database" "Aerospike"
            }

            offerManager = container "OfferManager" {
                description "Responsible for managing and updating offers metadata"
                tags "Google Cloud Platform - Kubernetes Engine"
                technology "Java"

                -> vipManagementSystem "Get VIP configs" "HTTP"
                user -> this "Get offer data" "HTTPS"
                -> priceTemplator "Get offer price in local currency" "HTTP" "Future"
                -> offerManagerKV "Cache offers" "Aerospike client" "Cache"
                -> offerManagerDb "Stores/reads offer data" "SQL"
            }

            exchangeRatesKV = container "ExchangeRatesKV" {
                description "Cache exchange rates"
                technology "Aerospike"
                tags "Google Cloud Platform - Compute Engine" "Database" "Aerospike"
            }

            exchangeRates = container "ExchangeRates" {
                description "Responsible for providing exchange rates to backend services"
                tags "Google Cloud Platform - Kubernetes Engine"
                technology "Java"

                -> exchangeRatesExternalSystem "Get rates" "HTTPS"
                -> exchangeRatesKV "Get/cache rates" "Aerospike client" "Cache"
            }

            offerPriceManager = container "OfferPriceManager" {
                description "Responsbile for managing and update offer prices in different currencies including/excluding taxes"
                tags "Google Cloud Platform - Kubernetes Engine"
                technology "Java"

                -> exchangeRates "Get exchange rates" "HTTP"
                -> priceTemplator "Store updated pricing templates for different currencies" "HTTP"
                -> externalStoresSystem "Update offer prices in different currencies" "HTTPS"  
                liveOps -> this "Configure offers" "HTTP"
                cronSystem -> this "Trigger batch offers prices recalculation" "HTTP"
                -> schedulingSystem "Schedule offer update in stores (Due to rate limiting on stores side)" "Kafka" "Kafka"
                schedulingSystem -> this "Trigger offer update in stores" "Kafka" "Kafka"
            }
        }       
    }

    views {

        systemLandscape "SystemLandscape" "Offer management system landscape" {
            include *
            autoLayout
        }

        systemContext offerManagementSystem "offerManagementSystemContext" {
            include *
            autoLayout
        }

        container offerManagementSystem "offerManagementSystem-container-view" {
            include *
            autoLayout
        }  

        dynamic offerManagementSystem "change-offer-prices-flow" {
            autoLayout
            title "Change offer prices flow"
            description "Describes steps to change/recalculate offer prices in different currencys and update them in stores"

            {
                {
                    liveOps -> offerPriceManager
                }
                {
                    cronSystem -> offerPriceManager
                }
            }
            offerPriceManager -> exchangeRates
            exchangeRates -> exchangeRatesKV
            exchangeRates -> exchangeRatesExternalSystem
            offerPriceManager -> priceTemplator
            priceTemplator -> priceTemplatorDb
            offerPriceManager -> schedulingSystem
            schedulingSystem -> offerPriceManager
            offerPriceManager -> externalStoresSystem
        }
    }

}