model ConnectedAircraft {
    id                 Int       @id @default(autoincrement())
    userId             String
    publicUser         Json
    lastHeartbeat      DateTime  @default(now())
    stationId          Int
    loginTime          DateTime  @default(now())
    esimatedLogoutTime DateTime?
    logoutTime         DateTime?
    positionLogIds     Int[]     @default([])

    // relations:
    user    User    @relation(fields: [userId], references: [id])
    station Station @relation(fields: [stationId], references: [id])
}