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index.ts
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index.ts
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import { Window, windowManager } from "node-window-manager";
import EventEmitter from "node:events";
import { exiftool, Tags } from "exiftool-vendored";
import path from "node:path";
import { LinuxResult, openWindowsSync, activeWindowSync } from "get-windows";
type LinuxResultExtra = LinuxResult & {
getExif(): Promise<Tags> | undefined;
lastFocusAt?: number;
createdAt?: number;
};
declare module "node-window-manager" {
interface Window {
getExif(): Promise<Tags> | undefined;
lastFocusAt?: number;
createdAt?: number;
}
}
declare module "exiftool-vendored" {
interface Tags {
FileDescription: String | undefined;
}
}
Window.prototype.getExif = function () {
return exiftool.read(this.path);
};
interface WindowDetails {
createdAt: number;
lastFocusAt: number;
path: string;
}
interface Events {
change: (window?: Window) => void;
}
interface LinuxEvents {
change: (window?: LinuxResultExtra) => void;
}
export class ProcessListener extends EventEmitter {
executableFilenames: Set<string>;
windowDetails = new Map<string, WindowDetails>();
lastActiveWindowCache: Window | undefined;
public on<K extends keyof Events>(e: K, listener: Events[K]): this {
return super.on(e, listener);
}
public emit<K extends keyof Events>(
event: K,
...args: Parameters<Events[K]>
): boolean {
return super.emit(event, ...args);
}
constructor(executableFilenames: string[]) {
super();
this.executableFilenames = new Set(executableFilenames);
setTimeout(() => {
this.loop();
});
setInterval(this.loop.bind(this), 5000);
}
addExecutable(filename: string) {
this.executableFilenames.add(filename);
this.loop();
}
removeExecutable(filename: string) {
this.executableFilenames.delete(filename);
this.loop();
}
updateExecutableFilenames(executableFilenames: string[]) {
this.executableFilenames = new Set(executableFilenames);
this.loop();
}
lastActiveWindow() {
const windows = windowManager.getWindows();
return [...this.windowDetails.values()]
.filter((details) => {
const filename = path.basename(details.path);
return this.executableFilenames.has(filename);
})
.sort((a, b) => {
return b.lastFocusAt - a.lastFocusAt;
})
.map((details) => {
const window = windows.find((w) => w.path === details.path)!;
if (!window) return undefined;
window.createdAt = details.createdAt;
window.lastFocusAt = details.lastFocusAt;
return window;
})[0] as Window | undefined;
}
loop() {
const activeWindow = windowManager.getActiveWindow();
const windows = windowManager.getWindows();
// add new details
for (let i = 0; i < windows.length; i++) {
const window = windows[i];
this.updateWindowDetails(window);
}
// remove closed window details
this.windowDetails.forEach((details, path) => {
if (!windows.find((w) => w.path === path)) {
this.windowDetails.delete(path);
}
});
if (this.lastActiveWindow()?.path !== activeWindow?.path) {
this.updateWindowDetails(activeWindow, true);
}
const newLastActiveWindow = this.lastActiveWindow();
if (newLastActiveWindow?.path !== this.lastActiveWindowCache?.path) {
this.lastActiveWindowCache = newLastActiveWindow;
this.emit("change", newLastActiveWindow);
}
}
private updateWindowDetails(window: Window, forceUpdateFocusAt?: boolean) {
const obj = {
...(this.windowDetails.get(window.path) || {
path: window.path,
createdAt: Date.now(),
}),
} as WindowDetails;
(forceUpdateFocusAt || !obj.lastFocusAt) && (obj.lastFocusAt = Date.now());
this.windowDetails.set(window.path, obj);
}
}
export class ProcessListenerLinux extends EventEmitter {
executableFilenames: Set<string>;
windowDetails = new Map<string, WindowDetails>();
lastActiveWindowCache: LinuxResultExtra | undefined;
public on<K extends keyof LinuxEvents>(e: K, listener: LinuxEvents[K]): this {
return super.on(e, listener);
}
public emit<K extends keyof LinuxEvents>(
event: K,
...args: Parameters<LinuxEvents[K]>
): boolean {
return super.emit(event, ...args);
}
constructor(executableFilenames: string[]) {
super();
this.executableFilenames = new Set(executableFilenames);
setTimeout(() => {
this.loop();
});
setInterval(this.loop.bind(this), 5000);
}
addExecutable(filename: string) {
this.executableFilenames.add(filename);
this.loop();
}
removeExecutable(filename: string) {
this.executableFilenames.delete(filename);
this.loop();
}
updateExecutableFilenames(executableFilenames: string[]) {
this.executableFilenames = new Set(executableFilenames);
this.loop();
}
lastActiveWindow() {
const windows = openWindowsSync();
if (!windows) return undefined;
return [...this.windowDetails.values()]
.filter((details) => {
const filename = path.basename(details.path);
return this.executableFilenames.has(filename);
})
.sort((a, b) => {
return b.lastFocusAt - a.lastFocusAt;
})
.map((details) => {
const window = windows.find(
(w) => w.owner.path === details.path
)! as LinuxResultExtra;
if (!window) return undefined;
window.createdAt = details.createdAt;
window.lastFocusAt = details.lastFocusAt;
return window;
})[0] as LinuxResultExtra | undefined;
}
loop() {
const activeWindow = activeWindowSync() as LinuxResultExtra;
const windows = openWindowsSync() as LinuxResultExtra[];
if (!windows) return;
// add new details
for (let i = 0; i < windows.length; i++) {
const window = windows[i] as LinuxResultExtra;
this.updateWindowDetails(window);
}
// remove closed window details
this.windowDetails.forEach((details, path) => {
if (!windows.find((w) => w.owner.path === path)) {
this.windowDetails.delete(path);
}
});
if (this.lastActiveWindow()?.owner.path !== activeWindow?.owner.path) {
this.updateWindowDetails(activeWindow, true);
}
const newLastActiveWindow = this.lastActiveWindow();
if (
newLastActiveWindow?.owner.path !== this.lastActiveWindowCache?.owner.path
) {
this.lastActiveWindowCache = newLastActiveWindow;
this.emit("change", newLastActiveWindow);
}
}
private updateWindowDetails(
window: LinuxResultExtra,
forceUpdateFocusAt?: boolean
) {
const obj = {
...(this.windowDetails.get(window.owner.path) || {
path: window.owner.path,
createdAt: Date.now(),
}),
} as WindowDetails;
(forceUpdateFocusAt || !obj.lastFocusAt) && (obj.lastFocusAt = Date.now());
this.windowDetails.set(window.owner.path, obj);
}
}
export function getWindows() {
const filteredFolder = ["Windows"];
const arr: Window[] = [];
const windowArr = windowManager.getWindows();
for (let index = 0; index < windowArr.length; index++) {
const window = windowArr[index];
if (arr.findIndex((w) => w.path === window.path) + 1) continue;
const path = window.path.substring(3);
if (filteredFolder.find((f) => path.startsWith(f))) continue;
if (!window.getTitle()?.trim()) continue;
if (!window.isWindow()) continue;
arr.push(window);
}
return arr;
}
export function getLinuxWindows() {
const windows = openWindowsSync();
if (!windows) return [];
return windows;
}