import { ETouchGesture } from '../Browser';
import { BrowserView } from '.';

export interface BrowserViewPopup {
	/**
	 * Blur the popup contents.
	 * @param enabled Is the blur enabled?
	 * @param useBackgroundColor
	 * @param blur
	 */
	AddGlass(enabled: boolean, useBackgroundColor: boolean, blur: boolean): void;

	/**
	 * @returns `true` if you can go backward in history.
	 */
	CanGoBackward(): boolean;

	/**
	 * @returns `true` if you can go forward in history.
	 */
	CanGoForward(): boolean;

	// alert() i assume
	DialogResponse(param0: boolean): void;

	EnableSteamInput(): void;

	/**
	 * Find a string in the page.
	 * @param input The string to find.
	 * @param param1
	 * @param previous `true` for previous match, `false` for next match.
	 */
	FindInPage(input: string, param1: boolean, previous: boolean): void;

	/**
	 * Get the current popup position. Only updates when using {@link SetBounds}!
	 * @returns the window position.
	 */
	GetBounds(): BrowserViewBounds;

	/**
	 * Go back in history.
	 */
	GoBack(): void;

	/**
	 * Go forward in history.
	 */
	GoForward(): void;

	/**
	 * @param command See {@link BrowserViewContextMenu.custom_commands}.
	 */
	HandleContextMenuCommand(command: number, param2: BrowserViewContextMenu): void;

	/**
	 * Load the specified URL.
	 * @param url The URL to go to.
	 */
	LoadURL(url: string): void;

	NotifyUserActivation(): void;

	/**
	 * Paste the current clipboard selection.
	 */
	Paste(): void;

	/**
	 * @returns a boolean indicating whether the operation was successful. Will
	 * always be `false` if there are no listeners created by
	 * {@link BrowserView.RegisterForMessageFromParent}.
	 */
	PostMessage(message: string, args: string): boolean;

	/**
	 * Reload the page.
	 */
	Reload(): void;

	/**
	 * Load the specified URL, but don't save history.
	 * @param url The URL to go to.
	 */
	ReplaceURL(url: string): void;

	/**
	 * Define blocked protocols, like https, etc.
	 * @param protocols The protocols to block, separated by a semicolon.
	 */
	SetBlockedProtocols(protocols: string): void;

	/**
	 * Sets the browser window position.
	 * @param x Browser window X position.
	 * @param y Browser window Y position.
	 * @param width Browser window width.
	 * @param height Browser window height.
	 */
	SetBounds(x: number, y: number, width: number, height: number): void;

	/**
	 * Sets the browser window focus state.
	 * @param value Is the window focused?
	 */
	SetFocus(value: boolean): void;

	SetName(browserName: string): void;

	/**
	 * Registers a callback to be called when a context menu is shown.
	 * @param callback The callback function to be called.
	 */
	SetShowContextMenuCallback(callback: (data: BrowserViewContextMenu) => void): void;

	/**
	 * Registers a callback to be called when a steam:// URL is loaded.
	 */
	SetSteamURLCallback(callback: (url: string) => void): void;

	/**
	 * @todo unconfirmed
	 */
	SetTouchGesturesToCancel(gestures: ETouchGesture[]): void;

	SetVRKeyboardVisibility(value: boolean): void;

	SetVisible(value: boolean): void;

	SetWindowStackingOrder(value: EWindowStackingOrder): void;

	/**
	 * Stop the 'find in page' function.
	 */
	StopFindInPage(): void;

	/**
	 * Stop listening for an event.
	 * @param event The event to stop listening to.
	 * @param callback The callback function to be called.
	 */
	off<K extends keyof BrowserViewEventMap>(event: K, callback: BrowserViewEventMap[K]): void;

	/**
	 * Start listening for an event.
	 * @param event The event to start listening to.
	 * @param callback The callback function to be called.
	 */
	on<K extends keyof BrowserViewEventMap>(event: K, callback: BrowserViewEventMap[K]): void;
}

interface BrowserViewEventMap {
	/**
	 * Fires when an `alert()` dialog appears.
	 */
	'alert-dialog': (message: string) => void;

	/**
	 * Fires when the browser is about to get destroyed.
	 */
	'before-close': () => void;

	/**
	 * Fires when a URL gets blocked.
	 * @todo not SetBlockedProtocols, maybe only steam links
	 */
	'blocked-request': (blockedURL: string) => void;

	/**
	 * Fires when {@link BrowserViewPopup.CanGoBackward} or
	 * {@link BrowserViewPopup.CanGoForward} state changes.
	 */
	'can-go-back-forward-changed': (canGoBackward: boolean, canGoForward: boolean) => void;

	/**
	 * Fires when a `confirm()` dialog appears.
	 */
	'confirm-dialog': (message: string) => void;

	/**
	 * Fires when the browser's favicon changes.
	 */
	'favicon-urls-changed': (faviconURLs: string[]) => void;

	/**
	 * Fires when 'Find in page' gets its results.
	 */
	'find-in-page-results': (results: number, activeResultIndex: number) => void;

	/**
	 * Fires when the page finishes loading.
	 */
	'finished-request': (currentURL: string, previousURL: string) => void;

	/**
	 * Fires when the browser goes focused or vice versa.
	 */
	'focus-changed': (focused: boolean) => void;

	/**
	 * Fires when the browser goes fullscreen or vice versa.
	 */
	'full-screen': (fullscreen: boolean) => void;

	/**
	 * Fires when history changes occur.
	 */
	'history-changed': (history: BrowserViewHistory) => void;

	/**
	 * Fires when the URL fails to load.
	 */
	'load-error': (errorCode: number, errorURL: string, errorDescription: string) => void;

	/**
	 * Fires when a message gets sent with {@link BrowserView.PostMessageToParent}.
	 */
	message: (message: string, args: string, currentURL: string) => void;

	'new-tab': (url: string, param1: boolean) => void;

	/**
	 * Fires when a node gets focused.
	 */
	'node-has-focus': (
		/**
		 * Same as {@link Element.tagName}, but the value is the element's ID when exists.
		 */
		elementIdOrTagName: string,
		/**
		 * Same as {@link Element.tagName}.
		 */
		elementTag: string,
		/**
		 * The `type` attribute of an `<input>` element.
		 */
		inputType: string,
		/**
		 * @todo Localization token that doesn't seem to exist? (#Web_FormSubmit)
		 */
		token: string,
		param4: boolean,
	) => void;

	'page-security': (url: string, pageSecurity: BrowserViewPageSecurity) => void;

	/**
	 * Fires when the page's `<title>` changes.
	 */
	'set-title': (title: string) => void;

	/**
	 * Fires when the page starts loading.
	 */
	'start-loading': (url: string, param1: boolean) => void;

	/**
	 * Fires when the page starts loading.
	 */
	'start-request': (url: string) => void;

	/**
	 * Fires when "Find in page" gets toggled.
	 */
	'toggle-find-in-page': () => void;
}

export interface BrowserViewBounds {
	x: number;
	y: number;
	width: number;
	height: number;
}

export interface BrowserViewContextMenu {
	/**
	 * Mouse X position inside the browser view.
	 */
	coord_x: number;

	/**
	 * Mouse Y position inside the browser view.
	 */
	coord_y: number;

	custom_commands: BrowserViewContextMenuCustomCommand[];

	/**
	 * Bitmask representing edit state. Appears on editable elements like `<input>`, etc.
	 * @see {@link EBrowserViewContextMenuEditFlag}
	 */
	edit_state_flags?: number;

	/**
	 * The misspelled word the cursor is on. Appears on an editable element with text.
	 */
	misspelled_word?: string;

	/**
	 * Browser page URL.
	 * @todo Appears when there is selected text?
	 */
	link_url?: string;

	/**
	 * Browser page URL.
	 */
	page_url: string;

	/**
	 * Selected text. Appears when there is selected text.
	 */
	selection_text?: string;

	/**
	 * Bitmask representing context menu type.
	 * @see {@link EBrowserViewContextMenuTypeFlag}
	 */
	type_flags: number;

	/**
	 * Browser page URL.
	 * @todo Appears when there is selected text?
	 */
	unfiltered_link_url?: string;
}

export interface BrowserViewContextMenuCustomCommand {
	id: number;
	label: string;
}

export enum EBrowserViewContextMenuTypeFlag {
	None,
	Page = 1 << 0,
	Frame = 1 << 1,
	Link = 1 << 2,
	Media = 1 << 3,
	Selection = 1 << 4,
	Editable = 1 << 5,
}

export enum EBrowserViewContextMenuEditFlag {
	None,
	CanUndo = 1 << 0,
	CanRedo = 1 << 1,
	CanCut = 1 << 2,
	CanCopy = 1 << 3,
	CanPaste = 1 << 4,
	CanDelete = 1 << 5,
	CanSelectAll = 1 << 6,
	CanTranslate = 1 << 7,
}

export enum EBrowserViewContextMenuCommand {
	Close = -1,
	OpenDevTools = 26500,
	CloseDevTools,
	InspectElement,
	OpenLinkInNewTab,
}

export enum EWindowStackingOrder {
	Bottom,
	Top,
}

export interface BrowserViewHistory {
	index: number;
	entries: BrowserViewHistoryEntry[];
}

export interface BrowserViewHistoryEntry {
	url: string;
}

export interface BrowserViewPageSecurity {
	bHasCertError: boolean;
	bIsEVCert: boolean;
	bIsSecure: boolean;
	certExpiry: number;
	certName: string;
	issuerName: string;
	nCertBits: number;
}