MOBILE-3523 login: Move login checks and modals to providers

src/core/login/pages/site/site.ts

@@ -335,7 +335,7 @@ export class CoreLoginSitePage {
      * @return Promise resolved after logging in.
      */
     protected async login(response: CoreSiteCheckResponse, foundSite?: CoreLoginSiteInfoExtended): Promise<void> {
-        return this.sitesProvider.checkRequiredMinimumVersion(response.config).then(() => {
+        return this.sitesProvider.checkApplication(response).then(() => {
 
             this.domUtils.triggerFormSubmittedEvent(this.formElement, true);
 

src/core/login/providers/helper.ts

@@ -14,7 +14,7 @@
 
 import { Injectable } from '@angular/core';
 import { Location } from '@angular/common';
-import { AlertController, NavController, NavOptions } from 'ionic-angular';
+import { NavController, NavOptions } from 'ionic-angular';
 import { TranslateService } from '@ngx-translate/core';
 import { CoreApp, CoreStoreConfig } from '@providers/app';
 import { CoreConfigProvider } from '@providers/config';
@@ -101,7 +101,6 @@ export class CoreLoginHelperProvider {
             private initDelegate: CoreInitDelegate,
             private sitePluginsProvider: CoreSitePluginsProvider,
             private location: Location,
-            private alertCtrl: AlertController,
             private courseProvider: CoreCourseProvider
             ) {
         this.logger = logger.getInstance('CoreLoginHelper');
@@ -1235,7 +1234,7 @@ export class CoreLoginHelperProvider {
     protected showWorkplaceNoticeModal(message: string): void {
         const link = CoreApp.instance.getAppStoreUrl({android: 'com.moodle.workplace', ios: 'id1470929705' });
 
-        this.showDownloadAppNoticeModal(message, link);
+        this.domUtils.showDownloadAppNoticeModal(message, link);
     }
 
     /**
@@ -1251,45 +1250,7 @@ export class CoreLoginHelperProvider {
 
         const link = CoreApp.instance.getAppStoreUrl(storesConfig);
 
-        this.showDownloadAppNoticeModal(message, link);
+        this.domUtils.showDownloadAppNoticeModal(message, link);
-    }
-
-    /**
-     * Show a modal warning the user that he should use a different app.
-     *
-     * @param message The warning message.
-     * @param link Link to the app to download if any.
-     */
-    protected showDownloadAppNoticeModal(message: string, link?: string): void {
-        const buttons: any[] = [
-                {
-                    text: this.translate.instant('core.ok'),
-                    role: 'cancel'
-                }
-            ];
-
-        if (link) {
-            buttons.push({
-                text: this.translate.instant('core.download'),
-                handler: (): void => {
-                    this.utils.openInBrowser(link);
-                }
-            });
-        }
-
-        const alert = this.alertCtrl.create({
-                message: message,
-                buttons: buttons
-            });
-
-        alert.present().then(() => {
-            const isDevice = CoreApp.instance.isAndroid() || CoreApp.instance.isIOS();
-            if (!isDevice) {
-                // Treat all anchors so they don't override the app.
-                const alertMessageEl: HTMLElement = alert.pageRef().nativeElement.querySelector('.alert-message');
-                this.domUtils.treatAnchors(alertMessageEl);
-            }
-        });
     }
 
     /**

src/providers/sites.ts

@@ -1023,6 +1023,15 @@ export class CoreSitesProvider {
         return this.appDB.insertRecord(CoreSitesProvider.SITES_TABLE, entry);
     }
 
+    /**
+     * Check the app for a site and show a download dialogs if necessary.
+     *
+     * @param response Data obtained during site check.
+     */
+    async checkApplication(response: CoreSiteCheckResponse): Promise<void> {
+        await this.checkRequiredMinimumVersion(response.config);
+    }
+
     /**
      * Check the required minimum version of the app for a site and shows a download dialog.
      *

src/providers/utils/dom.ts

@@ -1402,6 +1402,42 @@ export class CoreDomUtilsProvider {
         return loader;
     }
 
+    /**
+     * Show a modal warning the user that he should use a different app.
+     *
+     * @param message The warning message.
+     * @param link Link to the app to download if any.
+     */
+    showDownloadAppNoticeModal(message: string, link?: string): void {
+        const buttons: any[] = [{
+            text: this.translate.instant('core.ok'),
+            role: 'cancel'
+        }];
+
+        if (link) {
+            buttons.push({
+                text: this.translate.instant('core.download'),
+                handler: (): void => {
+                    this.openInBrowser(link);
+                }
+            });
+        }
+
+        const alert = this.alertCtrl.create({
+            message: message,
+            buttons: buttons
+        });
+
+        alert.present().then(() => {
+            const isDevice = CoreApp.instance.isAndroid() || CoreApp.instance.isIOS();
+            if (!isDevice) {
+                // Treat all anchors so they don't override the app.
+                const alertMessageEl: HTMLElement = alert.pageRef().nativeElement.querySelector('.alert-message');
+                this.treatAnchors(alertMessageEl);
+            }
+        });
+    }
+
     /**
      * Show a prompt modal to input some data.
      *
@@ -1559,17 +1595,7 @@ export class CoreDomUtilsProvider {
                     event.preventDefault();
                     event.stopPropagation();
 
-                    // We cannot use CoreDomUtilsProvider.openInBrowser due to circular dependencies.
+                    this.openInBrowser(href);
-                    if (CoreApp.instance.isDesktop()) {
-                        // It's a desktop app, use Electron shell library to open the browser.
-                        const shell = require('electron').shell;
-                        if (!shell.openExternal(href)) {
-                            // Open browser failed, open a new window in the app.
-                            window.open(href, '_system');
-                        }
-                    } else {
-                        window.open(href, '_system');
-                    }
                 }
             });
         });
@@ -1680,6 +1706,21 @@ export class CoreDomUtilsProvider {
             online: !!online,
         }, siteId);
     }
+
+    // We cannot use CoreUtilsProvider.openInBrowser due to circular dependencies.
+    protected openInBrowser(url: string): void {
+        if (CoreApp.instance.isDesktop()) {
+            // It's a desktop app, use Electron shell library to open the browser.
+            const shell = require('electron').shell;
+            if (!shell.openExternal(url)) {
+                // Open browser failed, open a new window in the app.
+                window.open(url, '_system');
+            }
+        } else {
+            window.open(url, '_system');
+        }
+    }
+
 }
 
 export class CoreDomUtils extends makeSingleton(CoreDomUtilsProvider) {}