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

/**
 * Represents functions related to managing installs and installation wizards in Steam.
 */
export interface Installs {
	/**
	 * Cancels the installation wizard if it is open.
	 */
	CancelInstall(): void;

	/**
	 * Continues and starts the installation if the wizard is still open.
	 */
	ContinueInstall(): void;

	/**
	 * Retrieves information from the last opened or currently opened installation wizard.
	 */
	GetInstallManagerInfo(): Promise<InstallMgrInfo>;

	/**
	 * Opens the restore from backup installer wizard for a specific app.
	 * @param appBackupPath The backup path of the app.
	 */
	OpenInstallBackup(appBackupPath: string): void;

	/**
	 * Opens the installation wizard for specified app IDs.
	 * @param appIds An array of app IDs to install.
	 */
	OpenInstallWizard(appIds: number[]): void;

	/**
	 * Opens the uninstall wizard for specified app IDs.
	 * @param appIds An array of app IDs to uninstall.
	 * @param dontPrompt Whether to *not* prompt the user to uninstall.
	 */
	OpenUninstallWizard(appIds: number[], dontPrompt: boolean): void;

	RegisterForShowConfirmUninstall: Unregisterable; // Broken? doesn't seem to work

	/**
	 * Registers a callback function to be called when the "Failed Uninstall" dialog is shown.
	 * @param callback The callback function to be called when the dialog is shown.
	 * @returns an object that can be used to unregister the callback.
	 */
	RegisterForShowFailedUninstall(callback: (appId: number, reason: EAppUpdateError) => void): Unregisterable;

	/**
	 * Registers a callback function to be called when the installation wizard is shown.
	 * @param callback The callback function to be called.
	 * @returns an object that can be used to unregister the callback.
	 */
	RegisterForShowInstallWizard(callback: (data: InstallMgrInfo) => void): Unregisterable;

	RegisterForShowRegisterCDKey: any;

	/**
	 * Sets a list of app identifiers for downloads in the installation wizard.
	 * @param appIds An array of app IDs to set.
	 * @remarks The wizard will not reflect this change immediately, but changing another option will.
	 */
	SetAppList(appIds: number[]): void;

	/**
	 * Sets the options for creating shortcuts in the installation wizard.
	 * @param bDesktopShortcut Whether to create a desktop shortcut.
	 * @param bSystemMenuShortcut Whether to create a system menu shortcut.
	 * @remarks The wizard will not reflect this change immediately, but changing another option will.
	 */
	SetCreateShortcuts(bDesktopShortcut: boolean, bSystemMenuShortcut: boolean): void;

	/**
	 * Sets the install folder for the installation wizard using an install folder index.
	 * @param folderIndex The index of the install folder.
	 * @remarks The wizard will not reflect this change immediately, but changing another option will.
	 */
	SetInstallFolder(folderIndex: number): void;
}

export interface InstallMgrInfo {
	rgAppIDs: InstallInfoApps[];
	eInstallState: EInstallMgrState;
	nDiskSpaceRequired: number;
	nDiskSpaceAvailable: number;
	nCurrentDisk: number;
	nTotalDisks: number;
	bCanChangeInstallFolder: boolean;
	/**
	 * Index of the install folder. -1 if not installed.
	 */
	iInstallFolder: number;
	iUnmountedFolder: number;
	currentAppID: number;
	eAppError: EAppUpdateError;
	errorDetail: string;
	bSystemMenuShortcut: boolean;
	bDesktopShortcut: boolean;
	bIsBackupInstall: boolean;
	// device/hostname
	strPeerContentServer: string;
	bPeerContentServerOnline: boolean;
	bPeerContentServerAvailable: boolean;
}

export interface InstallInfoApps {
	nAppID: number;
	lDiskSpaceRequiredBytes: number;
}

export enum EInstallMgrState {
	None,
	Setup,
	WaitLicense,
	FreeLicense,
	ShowCDKey,
	WaitAppInfo,
	ShowPassword,
	ShowConfig,
	ShowEULAs,
	CreateApps,
	ReadFromMedia,
	ShowChangeMedia,
	WaitLegacyCDKeys,
	ShowSignup,
	Complete,
	Failed,
	Canceled,
}