MOBILE-3640 database: Location service improvements on error handling

src/addons/mod/data/fields/latlong/component/addon-mod-data-field-latlong.html

@@ -11,7 +11,7 @@
             <ion-input type="text" [formControlName]="'f_'+field.id+'_1'" maxlength="10"></ion-input>
             <span class="placeholder-icon" item-right>°E</span>
         </div>
-        <div class="addon-data-latlong">
+        <div class="addon-data-latlong" *ngIf="locationServicesEnabled">
             <ion-button (click)="getLocation($event)">
                 <ion-icon name="fas-crosshairs" slot="start"></ion-icon>
                 {{ 'addon.mod_data.mylocation' | translate }}

src/addons/mod/data/fields/latlong/component/latlong.ts

@@ -33,6 +33,7 @@ export class AddonModDataFieldLatlongComponent extends AddonModDataFieldPluginCo
 
     north?: number;
     east?: number;
+    locationServicesEnabled = false;
 
     constructor(
         fb: FormBuilder,
@@ -87,7 +88,7 @@ export class AddonModDataFieldLatlongComponent extends AddonModDataFieldPluginCo
     /**
      * @inheritdoc
      */
-    protected init(): void {
+    protected async init(): Promise<void> {
         if (this.value) {
             this.updateValue(this.value);
         }
@@ -95,6 +96,8 @@ export class AddonModDataFieldLatlongComponent extends AddonModDataFieldPluginCo
         if (this.editMode) {
             this.addControl('f_' + this.field.id + '_0', this.north);
             this.addControl('f_' + this.field.id + '_1', this.east);
+            this.locationServicesEnabled = await CoreGeolocation.canRequest();
+
         } else if (this.searchMode) {
             this.addControl('f_' + this.field.id);
         }
@@ -136,7 +139,7 @@ export class AddonModDataFieldLatlongComponent extends AddonModDataFieldPluginCo
      *
      * @param error Location error.
      */
-    protected showLocationErrorModal(error: CoreAnyError): void {
+    protected showLocationErrorModal(error: CoreAnyError | CoreGeolocationError): void {
         if (error instanceof CoreGeolocationError) {
             CoreDomUtils.showErrorModal(this.getGeolocationErrorMessage(error), true);
 

src/core/services/geolocation.ts

@@ -16,8 +16,9 @@ import { Injectable } from '@angular/core';
 import { Coordinates } from '@ionic-native/geolocation';
 
 import { CoreApp } from '@services/app';
-import { CoreError } from '@classes/errors/error';
+import { CoreAnyError, CoreError } from '@classes/errors/error';
 import { Geolocation, Diagnostic, makeSingleton } from '@singletons';
+import { CoreUtils } from './utils/utils';
 
 @Injectable({ providedIn: 'root' })
 export class CoreGeolocationProvider {
@@ -89,7 +90,6 @@ export class CoreGeolocationProvider {
      */
     protected async doAuthorizeLocation(failOnDeniedOnce: boolean = false): Promise<void> {
         const authorizationStatus = await Diagnostic.getLocationAuthorizationStatus();
-
         switch (authorizationStatus) {
             case Diagnostic.permissionStatus.DENIED_ONCE:
                 if (failOnDeniedOnce) {
@@ -116,9 +116,21 @@ export class CoreGeolocationProvider {
      *
      * @param error Error.
      */
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    protected isCordovaPermissionDeniedError(error?: CoreAnyError | GeolocationPositionError): boolean {
-    protected isCordovaPermissionDeniedError(error?: any): boolean {
+        return !!error &&
-        return error && 'code' in error && 'PERMISSION_DENIED' in error && error.code === error.PERMISSION_DENIED;
+            typeof error == 'object' &&
+            'code' in error &&
+            'PERMISSION_DENIED' in error &&
+            error.code === error.PERMISSION_DENIED;
+    }
+
+    /**
+     * Prechecks if it can request location services.
+     *
+     * @return If location can be requested.
+     */
+    async canRequest(): Promise<boolean> {
+        return CoreUtils.promiseWorks(Diagnostic.getLocationAuthorizationStatus());
     }
 
 }
@@ -141,3 +153,15 @@ export class CoreGeolocationError extends CoreError {
     }
 
 }
+
+/**
+ * Imported interface type from Web api.
+ * https://developer.mozilla.org/en-US/docs/Web/API/GeolocationPositionError
+ */
+interface GeolocationPositionError {
+    code: number;
+    message: string;
+    PERMISSION_DENIED: number; // eslint-disable-line @typescript-eslint/naming-convention
+    POSITION_UNAVAILABLE: number; // eslint-disable-line @typescript-eslint/naming-convention
+    TIMEOUT: number; // eslint-disable-line @typescript-eslint/naming-convention
+};