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// (C) Copyright 2015 Moodle Pty Ltd.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
import { Injectable } from '@angular/core';
import { makeSingleton } from '@singletons/core.singletons';
import { CoreLogger } from '@singletons/logger';
/**
* Data stored for a redirect to another page/site.
*/
export type CoreRedirectData = {
/**
* ID of the site to load.
*/
siteId?: string;
/**
* Name of the page to redirect to.
*/
page?: string;
/**
* Params to pass to the page.
*/
params?: any;
/**
* Timestamp when this redirect was last modified.
*/
timemodified?: number;
};
/**
* Factory to provide some global functionalities, like access to the global app database.
* @description
* Each service or component should be responsible of creating their own database tables. Example:
*
* constructor(appProvider: CoreAppProvider) {
* this.appDB = appProvider.getDB();
* this.appDB.createTableFromSchema(this.tableSchema);
* }
*/
@Injectable()
export class CoreAppProvider {
protected logger: CoreLogger;
constructor() {
this.logger = CoreLogger.getInstance('CoreAppProvider');
}
/**
* Retrieve redirect data.
*
* @return Object with siteid, state, params and timemodified.
*/
getRedirect(): CoreRedirectData {
if (localStorage && localStorage.getItem) {
try {
const data: CoreRedirectData = {
siteId: localStorage.getItem('CoreRedirectSiteId'),
page: localStorage.getItem('CoreRedirectState'),
params: localStorage.getItem('CoreRedirectParams'),
timemodified: parseInt(localStorage.getItem('CoreRedirectTime'), 10)
};
if (data.params) {
data.params = JSON.parse(data.params);
}
return data;
} catch (ex) {
this.logger.error('Error loading redirect data:', ex);
}
}
return {};
}
/**
* Store redirect params.
*
* @param siteId Site ID.
* @param page Page to go.
* @param params Page params.
*/
storeRedirect(siteId: string, page: string, params: any): void {
if (localStorage && localStorage.setItem) {
try {
localStorage.setItem('CoreRedirectSiteId', siteId);
localStorage.setItem('CoreRedirectState', page);
localStorage.setItem('CoreRedirectParams', JSON.stringify(params));
localStorage.setItem('CoreRedirectTime', String(Date.now()));
} catch (ex) {
// Ignore errors.
}
}
}
}
export class CoreApp extends makeSingleton(CoreAppProvider) {}