@startuml

!theme crt-amber

class App {
    Located in: App.xaml -> App.xaml.cs
    --
    --
    ..Startup..
    // constructor
    App(): app
    CreateFileFolder(): String
    InitializeLogger(): String
    ParseMinLogLevel(String): LoggerConfiguration 

    ..Launched..
    // entrypoint
    OnLaunch()

    // internal method
    CreateServices(): IServiceProvider
    // run migrations
    Updatedatabase(IServiceProvider): void
}

note left of App: Entrypoint

class GlobalWrapper {
    Singleton
    Saves global application state.
    Basically a mix of a ton of
    stuff with no particular order. 
    Less of a wrapper, and more of util
    --attributes--
    ..status info..
    + LoginStatus: LoginStatusEnum
    + FileFolder: String

    ..server connection..
    + ClientTcpThread: ClientTcpThread
    --operations--
    ..File Handling / DB Interaction..
    + AddPictureToDb(Guid, Guid, String): foto

    ..server connection..
    + ConectToServer(): void
    + ReconnectToServer(int): void

    ..callbacks..
    + DownloadCallback(DownloadCallbackArgs): void
    + PictureGeneratedCallback(ImageGenerationCallbackArgs): void
}


class Config {
    Reads/Writes data using ConfigValue.Name as key
    Reading undefined key returns ConfigValue.Default.
    --
    config values
    ..
}

class ConfigValues {
    Represents an identifier 
    for a config value
    also containing the default value.
    Values are READONLY STATIC
    --
    LOG_LEVEL
    LOG_RETAIN_DAYS

    FILE_FOLDER
    LOG_FOLDER
    ASSETS_FOLDER
    ...
}

 ConfigValues "data" -- "accessor" Config:  > Reads values

class DBManager {
    Singleton
    Saves information (paths, ...)
    of databases
    --
    --
    setClientErrorParams(String)
    setClientParams(String)
}

class CleanLocalStorageManager {
    Singleton
    Cleans local data if it
    exceeds value in the config
    --
    --
    // called from App
    CleanStorage(): void
    // computes file sizes
    IsThresholdExceeded(DirectoryInfo): bool

}

DBManager .. App: initializes <
CleanLocalStorageManager .. App: triggers at startup <
App . Config: reads / writes <
App .. GlobalWrapper: sets fileFolder, connectToServer <


@enduml