@startuml insight_quota_flow
!option handwritten true
skinparam sequenceMessageAlign center
skinparam defaultFontName Helvetica

participant "Billing" as Billing
participant "insight-billing-gateway" as Gateway
participant "DB" as DB
participant "event-server" as EventServer
participant "insight-task-generator" as TaskGenerator
participant "insight-task-processor" as TaskProcessor
participant "vlm-host" as VlmHost

group #E8F2FC Provisioning Flow
    Billing -> Gateway : Notify Quota Updated
    Gateway -> DB : Save/Update Quota Data
    Gateway -> EventServer : Create Subscription
    note over TaskGenerator : Target: insight-task-generator
end

group #FBF6DD Processing Flow
    EventServer -> TaskGenerator : Webhook Event (Trigger)
    TaskGenerator -> DB : Fetch Quota Balance
    DB --> TaskGenerator : Quota Data
    TaskGenerator -> TaskProcessor : Send Task Message
    TaskProcessor -> DB : Verify Current Quota
    DB --> TaskProcessor : Quota Valid
    TaskProcessor -> VlmHost : Call VLM Model
    VlmHost --> TaskProcessor : Model Results
    TaskProcessor -> TaskProcessor : Process Results
    TaskProcessor -> DB : Save InsightEvent
    TaskProcessor -> DB : Consume Quota
    TaskProcessor -> Billing : Notify Quota Usage (NSQ)
end
@enduml