import { Unregisterable } from './shared';
import { EAppUpdateError } from './App';

/**
 * Represents functions related to Steam Install Folders.
 */
export interface InstallFolder {
	/**
	 * Adds a Steam Library folder to the Steam client.
	 * @param path The path of the Steam Library folder to be added.
	 * @returns the index of the added folder.
	 */
	AddInstallFolder(path: string): Promise<number>;

	/**
	 * Opens the file explorer to browse files in a specific Steam Library folder.
	 * @param folderIndex The index of the folder to be opened.
	 */
	BrowseFilesInFolder(folderIndex: number): void;

	/**
	 * Cancels the current move operation for moving game content.
	 */
	CancelMove(): void;

	/**
	 * Retrieves a list of installed Steam Library folders.
	 * @returns an array of SteamInstallFolder objects.
	 */
	GetInstallFolders(): Promise<SteamInstallFolder[]>;

	/**
	 * Retrieves a list of potential Steam Library folders that can be added.
	 * @returns an array of PotentialInstallFolder objects.
	 */
	GetPotentialFolders(): Promise<PotentialInstallFolder[]>;

	/**
	 * Moves the installation folder for a specific app to another Steam Library folder.
	 * @param appId The ID of the application to be moved.
	 * @param folderIndex The index of the target Steam Library folder.
	 */
	MoveInstallFolderForApp(appId: number, folderIndex: number): void;

	/**
	 * Refreshes the list of installed Steam Library folders.
	 */
	RefreshFolders(): void;

	/**
	 * Registers a callback function to be called when changes occur in Steam Install Folders.
	 * @param callback The callback function to be called.
	 * @returns an object that can be used to unregister the callback.
	 */
	RegisterForInstallFolderChanges(callback: (change: FolderChange) => void): Unregisterable;

	/**
	 * Registers a callback function to be called when moving game content progresses.
	 * @param callback The callback function to be called.
	 * @returns an object that can be used to unregister the callback.
	 */
	RegisterForMoveContentProgress(callback: (progress: MoveContentProgress) => void): Unregisterable;

	/**
	 * Registers a callback function to be called when repairing an install folder is finished.
	 * @param callback The callback function to be called.
	 * @returns an object that can be used to unregister the callback.
	 */
	RegisterForRepairFolderFinished(callback: (change: FolderChange) => void): Unregisterable;

	/**
	 * Removes a Steam Library folder from the Steam client.
	 * @param folderIndex The index of the folder to be removed.
	 */
	RemoveInstallFolder(folderIndex: number): void;

	/**
	 * Repairs an installed Steam Library folder.
	 * @param folderIndex The index of the folder to be repaired.
	 */
	RepairInstallFolder(folderIndex: number): void;

	/**
	 * Sets a specific Steam Library folder as the default install folder.
	 * @param folderIndex The index of the folder to be set as default.
	 */
	SetDefaultInstallFolder(folderIndex: number): void;

	/**
	 * Sets a user-defined label for a specific Steam Library folder.
	 * @param folderIndex The index of the folder to be labeled.
	 * @param label The label to be assigned to the folder.
	 */
	SetFolderLabel(folderIndex: number, label: string): void;
}

/**
 * Represents information about an installation folder.
 */
export interface SteamInstallFolder extends PotentialInstallFolder {
	/** Index of the folder. */
	nFolderIndex: number;
	/** Used space in the folder. */
	strUsedSize: string;
	/** Size of DLC storage used in the folder. */
	strDLCSize: string;
	/** Size of workshop storage used in the folder. */
	strWorkshopSize: string;
	/** Size of staged storage used in the folder. */
	strStagedSize: string;
	/** Indicates if the folder is set as the default installation folder. */
	bIsDefaultFolder: boolean;
	/** Indicates if the folder is currently mounted. */
	bIsMounted: boolean;
	/** List of applications installed in the folder. */
	vecApps: AppInfo[];
}

export interface PotentialInstallFolder {
	/** Path of the folder. */
	strFolderPath: string;
	/** User label for the folder. */
	strUserLabel: string;
	/** Name of the drive where the folder is located. */
	strDriveName: string;
	/** Total capacity of the folder. */
	strCapacity: string;
	/** Available free space in the folder. */
	strFreeSpace: string;
	/** Indicates if the folder is on a fixed drive. */
	bIsFixed: boolean;
}

/**
 * Represents information about an installed application.
 */
export interface AppInfo {
	/** ID of the application. */
	nAppID: number;
	/** Name of the application. */
	strAppName: string;
	/** Sorting information for the application. */
	strSortAs: string;
	/** Last played time in Unix Epoch time format. */
	rtLastPlayed: number;
	/** Size of used storage by the application. */
	strUsedSize: string;
	/** Size of DLC storage used by the application. */
	strDLCSize: string;
	/** Size of workshop storage used by the application. */
	strWorkshopSize: string;
	/** Size of staged storage used by the application. */
	strStagedSize: string;
}

export interface FolderChange {
	folderIndex: number;
}

export interface MoveContentProgress {
	appid: number;
	eError: EAppUpdateError;
	flProgress: number;
	strBytesMoved: string;
	strTotalBytesToMove: string;
	nFilesMoved: number;
}