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import { Platform } from '@ionic/angular';
import { Router, ActivatedRoute } from '@angular/router';
import { DeviceDetectorService } from 'ngx-device-detector';
import { Subject } from 'rxjs';
import { take } from 'rxjs/operators';
/** @internal */
interface OSInfo {
syst: string | null; // win / linux / mac
proc: string | null; // 32 / 64
arch: string | null; // ARM / intel
fext: string | null; // executable files extension
}
/** @internal */
type AvailablePlats = "ios" | "ipad" | "iphone" | "android" | "phablet" | "tablet" | "cordova" | "capacitor" | "electron" | "pwa" | "mobile" | "mobileweb" | "desktop" | "hybrid";
/**
* `platformService` is a service that manages platform detection and configuration.
* It provides methods and properties to determine the type of device and control the display mode,
* as well as emitting events related to configuration changes.
*
* @remarks
* This service is injected at the root level and depends on `DeviceDetectorService`, `Platform`, `Router`, and `ActivatedRoute`.
*/
@Injectable({
providedIn: 'root'
})
export class platformService {
private _platforms: Array <AvailablePlats> = [];
/** Indicates whether the current device is a mobile device. */
public _isMobile = false;
/** Indicates whether the current device is a desktop device. */
public _isDesktop = false;
private _onKioskChanged = new Subject<null> ();
private _onThemeChanged = new Subject<null> ();
/** Observable that emits when kiosk mode changes. */
public OnKioskChanged = this._onKioskChanged.asObservable();
/** Observable that emits when the theme changes. */
public OnThemeChanged = this._onThemeChanged.asObservable();
/**
* Retrieves detailed device information from `DeviceDetectorService`.
*
* @returns An object containing details about the device, such as OS, browser, and device type.
*/
get DeviceInfo(){
return this.detector.getDeviceInfo();
}
private _isready = false;
private _kioskmode = false;
private _bodytheme: 'dark' | 'light' | null = null;
private _bodyzoom = 1;
private _showscroll = false;
/**
* Retrieves the current kiosk mode status.
*
* @returns `true` if the device is in kiosk mode, otherwise `false`.
*/
get _isKiosk(){
return (this.LegacyMobile || this.LegacyTablet) ? false : this._kioskmode;
}
/**
* Sets the kiosk mode and emits an event when the mode changes.
*
* @remarks
* Kiosk mode can only be enabled if the device is not recognized as a mobile or tablet device.
*
* @param value - A boolean indicating whether kiosk mode should be enabled (`true`) or disabled (`false`).
*/
set _isKiosk(value){
Iif (this.LegacyMobile || this.LegacyTablet){
return; // cannot set kiosk when native keyboard is available
}
if (value != this._kioskmode){
this._kioskmode = value;
this._onKioskChanged.next(null);
if (this._kioskmode){
console.info("[KIOSK] using virtual keyboard");
}
else {
console.info("[KIOSK] using phisical keyboard");
}
}
}
/**
* Retrieves the current theme mode.
*
* @returns The current theme mode, either 'dark' or 'light'.
*/
get _theme(): 'dark' | 'light' | null {
if (this._bodytheme == null){
Iif (document.body.classList.contains('dark')){
this._bodytheme = 'dark';
}
}
return this._bodytheme;
}
/**
* Sets the current theme mode to either 'dark' or 'light' and emits a change event.
*
* @param value - The theme mode to set, either 'dark' or 'light'.
*/
set _theme(value: 'dark' | 'light'){
if (value != this._bodytheme){
if (this._bodytheme && document.body.classList.contains(this._bodytheme)){
document.body.classList.remove(this._bodytheme);
}
this._bodytheme = value;
document.body.classList.add(this._bodytheme);
this._onThemeChanged.next(null);
}
}
/**
* Retrieves the current zoom level of the application.
*
* @returns The current zoom level as a numeric value.
*/
get _zoomLevel(){
return this._bodyzoom;
}
/**
* Sets the current zoom level of the application.
*
* @param value - The new zoom level to apply.
*/
set _zoomLevel(value){
if (this._bodyzoom != value){
this._bodyzoom = value;
const _root = document.documentElement;
if (_root){
_root.style.setProperty('--body-scale-width', ((1 / this._bodyzoom) * 100).toString() + '%');
_root.style.setProperty('--body-scale-height', ((1 / this._bodyzoom) * 100).toString() + '%');
_root.style.setProperty('--body-scale-level', this._bodyzoom.toString());
_root.style.setProperty('--body-zoom-level', (this._bodyzoom * 100).toString() + '%');
_root.style.setProperty('--body-zoom-width', '100%');
_root.style.setProperty('--body-zoom-height', ((1 - this._bodyzoom) * 100) + '%');
}
}
}
/**
* Retrieves the visibility status of the scrollbar.
*
* @returns `true` if the scrollbar is visible, otherwise `false`.
*/
get _scrollbar(){
return this._showscroll;
}
/**
* Toggles the display of the scroll bar based on the provided value.
*
* @param value - A boolean indicating whether the scroll bar should be shown (`true`) or hidden (`false`).
*/
set _scrollbar(value){
this._showscroll = value;
this._onThemeChanged.next(null);
}
/************************/
/* OS information */
/************************/
private _runningos: OSInfo | null = null;
private get _OS(): OSInfo | null {
const _os: OSInfo = {
syst: null, // win / linux / mac
proc: null, // 32 / 64
arch: null, // ARM / intel
fext: null, // executable files extension
}
const _platform = navigator.platform?.toLowerCase();
const _useragnt = navigator.userAgent.toLowerCase();
// check with useragnt
let _win = _useragnt.includes('win');
let _lin = _useragnt.includes('linux') || _useragnt.includes('x11');
let _mac = _useragnt.includes('mac');
let _arm = _useragnt.includes('arm') || _useragnt.includes('aarch') || _useragnt.includes('apple silicon');;
// complete with platform
_win = _win || _platform.includes('win');
_lin = _lin || _platform.includes('linux') || _platform.includes('x11');
_mac = _mac || _platform.includes('mac');
if (_win){
const _is64 = _useragnt.includes('win64') || _useragnt.includes('wow64');
_os.proc = _is64 ? '64' : '32';
_os.arch = _arm ? 'arm': 'intel';
_os.syst = 'win';
_os.fext = '.exe';
}
if (_lin){
const _is64 = _useragnt.includes('x86_64') || _useragnt.includes('amd64');
_os.proc = _is64 ? '64' : '32';
_os.arch = _arm ? 'arm': 'intel';
_os.syst = 'linux'
_os.fext = '';
}
if (_mac){
_arm = _arm || _useragnt.includes('apple') && navigator.maxTouchPoints > 0;
_os.proc = '64';
_os.arch = _arm ? 'arm': 'intel';
_os.syst = 'mac'
_os.fext = '';
}
if (_os.syst && _os.proc && _os.arch){
return _os;
}
return null;
}
/**
* Returns the Operating System information object.
*
* @returns An object containing system type, processor type, architecture, and file extension for executables
*/
get RunningOS(){
if (!this._runningos){
this._runningos = this._OS;
}
return this._runningos;
}
/************************/
/* Browser information */
/************************/
private _browser: string | null = null;
private get _Browser(){ // https://www.geeksforgeeks.org/how-to-detect-the-user-browser-safari-chrome-ie-firefox-and-opera-using-javascript/
// Get the user-agent string
const userAgentString = navigator.userAgent;
const chromeAgent = userAgentString.includes("Chrome");
const IExplorerAgent = userAgentString.includes("MSIE") || userAgentString.includes("rv:");
const firefoxAgent = userAgentString.includes("Firefox");
const safariAgent = userAgentString.includes("Safari");
const operaAgent = userAgentString.includes("OP");
// the evaluation order is important!
if (operaAgent){
return "Opera";
}
if (chromeAgent){
return "Chrome";
}
if (safariAgent){
return "Safari";
}
if (firefoxAgent){
return "Firefox";
}
if (IExplorerAgent){
return "IE";
}
return null;
}
/**
* Returns the browser type as a string (e.g., "Chrome", "Safari", "Firefox").
*
* @returns The name of the browser or `null` if it could not be determined.
*/
get Browser(){
if (!this._browser){
this._browser = this._Browser;
}
return this._browser;
}
/****************************/
/* VIEW MODE */
/****************************/
private _forcedmode: string | null = null;
private ForceMode(mode: string){
const _mode = mode.toLowerCase();
Iif (_mode == 'desktop'){
this._forcedmode = 'desktop';
}
if (_mode == 'mobile'){
this._forcedmode = 'mobile';
}
}
set _viewMode(value: string){
const _mode = value.toLowerCase();
let _reload = false;
if ((_mode == 'mobile') && !this._ismobile){
_reload = true;
}
Iif ((_mode == 'desktop') && !this._isdesktop){
_reload = true;
}
if (_reload){
this.ForceMode(_mode);
console.info("[FORCE MODE] forcing to '" + _mode + "' and reloading");
this.router.navigate([], {
relativeTo: this.route,
queryParams: {
mode: _mode
},
queryParamsHandling: 'merge', // preserve the existing query params in the route
skipLocationChange: false // update the url params
}).then(() => {
window.location.reload(); // reload the page with current parameters
});
}
}
/****************************/
/* STARTS HERE */
/****************************/
private _angular_add(_platforms: Array <AvailablePlats>){
for(const _platform of _platforms) {
Iif (this.platform.is(_platform)){
this._platforms.push(_platform);
}
}
}
private _detector_add(_platforms: Array <AvailablePlats>){
for(const _platform of _platforms) {
let _available = false;
switch(_platform){
case 'mobile':
_available = this.detector.isMobile();
break;
case 'tablet':
_available = this.detector.isTablet();
break;
case 'desktop':
_available = this.detector.isDesktop();
break;
}
if (_available){
this._platforms.push(_platform);
}
}
}
private _initialize(){
this._platforms = []
console.info("[DEVICE] running on browser: [" + this.Browser + "]")
console.info("[DEVICE] identified platforms ", this.platform.platforms());
const _urlMode = this.route.snapshot.queryParamMap.get("mode");
Iif (_urlMode){ // use url mode
this.ForceMode(_urlMode);
}
this._angular_add(['cordova', 'ios', 'android']);
this._detector_add(['mobile', 'tablet', 'desktop']);
Iif (this._forcedmode){
console.info("[DEVICE] platform forced to ", [ this._forcedmode ]);
}
else {
console.info("[DEVICE] running on platforms ", this._platforms);
}
// retrieve the device mode in the url parameters
this.route.queryParams.pipe(take(1)).subscribe(
params => {
if ('mode' in params){
this.ForceMode(params['mode']);
if (this._forcedmode){
console.info("[DEVICE] platform forced to ", [ this._forcedmode ]);
}
else E{
console.info("[DEVICE] running on platforms ", this._platforms);
}
this._isMobile = this._ismobile;
this._isDesktop = this._isdesktop;
}
});
this._isready = true;
}
/**
* Constructor that initializes the platform service with required dependencies and sets up the platform configurations.
*
* @param detector - Device detector service for detecting device-specific information.
* @param platform - Ionic platform service for managing platform-specific features.
* @param router - Angular router for navigation.
* @param route - Activated route for accessing route-specific information.
*/
constructor(private detector: DeviceDetectorService, private platform: Platform, private router: Router, private route: ActivatedRoute) {
this.platform.ready().then(() => {
this._initialize();
this._isMobile = this._ismobile;
this._isDesktop = this._isdesktop;
});
}
/****************************************/
/* Wrap the platform used methods */
/****************************************/
/**
* Returns the platform ready status
*
* @returns True when the platform is ready
*/
get IsReady(){
return this._isready;
}
/**
* Wraps the platform resize event.
*
* @returns An observable that emits whenever the platform resize event occurs.
*/
get resize(){
return this.platform.resize;
}
/**
* Resolves when the platform is ready.
*
* @returns A promise that resolves when the platform setup is complete.
*/
ready(){
return this.platform.ready();
}
/**
* Returns an array of detected platform types.
*
* @returns An array containing the available platform types.
*/
platforms(){
return this._platforms;
}
/**
* Determines whether the current platform matches the specified type.
*
* @param _platform - The platform type to check (e.g., "ios", "android", "desktop").
* @returns `true` if the specified platform is detected; otherwise, `false`.
*/
is(_platform: AvailablePlats) {
const _retval = (this._platforms.includes(_platform));
if (!_retval){
// specific android check
if (_platform == 'android'){
if (window.navigator.userAgent.toLowerCase().includes('android')) {
return true;
}
}
// specific ios check
if (_platform == 'ios'){
if (/iPad|iPhone|iPod/.test(window.navigator.userAgent)) {
return true;
}
}
}
return _retval;
}
/****************************************/
/* Query large devices / mobile devices */
/****************************************/
private get _mobileOS(){
const _test: Array<'ios' | 'android'> = ['ios', 'android'];
for (const _os of _test){
if (this.platform.is(_os) || this.is(_os)){
return true;
}
}
return false;
}
private get _ismobile(){ // true if is mobile (not tablet)
if (this._forcedmode){
return (this._forcedmode == 'mobile');
}
return this.LegacyMobile;
}
private get _isdesktop(){
if (this._forcedmode){
return (this._forcedmode == 'desktop');
}
return !this._ismobile
}
/**
* Determines if the current device should be considered as a legacy mobile device.
*
* @returns `true` if the device is a legacy mobile device; otherwise, `false`.
*/
get LegacyMobile(){
Iif (!this._isready){
console.error("[PLATFORM] not ready!")
return false;
}
if (this.platform.is('tablet')){
return this.platform.is('iphone'); // iphones may identify themselves as tablet devices
}
else {
return this.platform.is('mobile') && this._mobileOS;
}
}
/**
* Determines if the current device should be considered as a legacy tablet device.
*
* @returns `true` if the device is a legacy tablet device; otherwise, `false`.
*/
get LegacyTablet(){
Iif (!this._isready){
console.error("[PLATFORM] not ready!")
return false;
}
return !this.LegacyMobile && !this.platform.is('desktop') && this.platform.is('tablet') && this._mobileOS;
}
/**
* Determines if the current device should be considered as a legacy desktop device.
*
* @returns `true` if the device is a legacy desktop device; otherwise, `false`.
*/
get LegacyDesktop(){
Iif (!this._isready){
console.error("[PLATFORM] not ready!")
return false;
}
return !this.LegacyMobile;
}
}
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