MOBILE-2786 desktop: Allow downloading old version in Win and Linux

src/core/login/lang/en.json

@@ -37,6 +37,7 @@
     "invalidvaluemin": "The minimum value is {{$a}}",
     "legacymoodleversion": "You are trying to connect to an unsupported Moodle version. Please, download the Moodle Classic app to access this Moodle site.",
     "legacymoodleversiondesktop": "You are trying to connect to <b>{{$a}}</b>.<br><br>This site is running an outdated unsupported version of Moodle which will not work with this Moodle Desktop App.<br><br>If this is your site please contact your local moodle partner to get assistance to update it.<br><br>See <a href=\"https://moodle.com/contact\">our contact page</a> to submit a request for assistance.",
+    "legacymoodleversiondesktopdownloadold": "<br><br>Alternatively, you can still access this site using an unsupported version of the app that can be downloaded from here.",
     "localmobileunexpectedresponse": "Moodle Mobile Additional Features check returned an unexpected response. You will be authenticated using the standard mobile service.",
     "loggedoutssodescription": "You have to authenticate again. You need to log in to the site in a browser window.",
     "login": "Log in",

src/core/login/providers/helper.ts

@@ -928,6 +928,8 @@ export class CoreLoginHelperProvider {
     protected showLegacyNoticeModal(message: string): void {
         const isAndroid = this.platform.is('android'),
             isIOS = this.platform.is('ios'),
+            isWindows = this.appProvider.isWindows(),
+            isLinux = this.appProvider.isLinux(),
             buttons: any[] = [
                 {
                     text: this.translate.instant('core.ok'),
@@ -935,12 +937,22 @@ export class CoreLoginHelperProvider {
                 }
             ];
 
-        if (isAndroid || isIOS) {
+        if (isAndroid || isIOS || isWindows || isLinux) {
             buttons.push({
                 text: this.translate.instant('core.download'),
                 handler: (): void => {
-                    const link = isAndroid ? 'market://details?id=com.moodle.classic' :
-                            'itms-apps://itunes.apple.com/app/id1403448117';
+                    let link;
+
+                    if (isWindows) {
+                        link = 'https://download.moodle.org/desktop/download.php?platform=windows&version=342';
+                    } else if (isLinux) {
+                        link = 'https://download.moodle.org/desktop/download.php?platform=linux&version=342&arch=' +
+                                (this.appProvider.is64Bits() ? '64' : '32');
+                    } else if (isAndroid) {
+                        link = 'market://details?id=com.moodle.classic';
+                    } else {
+                        link = 'itms-apps://itunes.apple.com/app/id1403448117';
+                    }
 
                     this.utils.openInBrowser(link);
                 }

src/providers/app.ts

@@ -146,6 +146,17 @@ export class CoreAppProvider {
         return this.appCtrl.getRootNavs()[0];
     }
 
+    /**
+     * Checks if the app is running in a 64 bits desktop environment (not browser).
+     *
+     * @return {boolean} Whether the app is running in a 64 bits desktop environment (not browser).
+     */
+    is64Bits(): boolean {
+        const process = (<any> window).process;
+
+        return this.isDesktop() && process.arch == 'x64';
+    }
+
     /**
      * Checks if the app is running in a desktop environment (not browser).
      *

src/providers/sites.ts

@@ -506,8 +506,13 @@ export class CoreSitesProvider {
                     params = {$a: siteUrl};
                 }
 
+                let error = this.translate.instant(errorKey, params);
+                if (this.appProvider.isWindows() || this.appProvider.isLinux()) {
+                    error += this.translate.instant('core.login.legacymoodleversiondesktopdownloadold');
+                }
+
                 return Promise.reject({
-                    error: this.translate.instant(errorKey, params),
+                    error: error,
                     errorcode: 'legacymoodleversion'
                 });
             } else {