resource.service.ts
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///
/// Copyright © 2016-2021 The Thingsboard Authors
///
/// 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 { HttpClient } from '@angular/common/http';
import { PageLink } from '@shared/models/page/page-link';
import { defaultHttpOptionsFromConfig, RequestConfig } from '@core/http/http-utils';
import { Observable } from 'rxjs';
import { PageData } from '@shared/models/page/page-data';
import { Resource, ResourceInfo } from '@shared/models/resource.models';
import { map } from 'rxjs/operators';
@Injectable({
providedIn: 'root'
})
export class ResourceService {
constructor(
private http: HttpClient
) {
}
public getResources(pageLink: PageLink, config?: RequestConfig): Observable<PageData<ResourceInfo>> {
return this.http.get<PageData<ResourceInfo>>(`/api/resource${pageLink.toQuery()}`,
defaultHttpOptionsFromConfig(config));
}
public getResource(resourceId: string, config?: RequestConfig): Observable<Resource> {
return this.http.get<Resource>(`/api/resource/${resourceId}`, defaultHttpOptionsFromConfig(config));
}
public downloadResource(resourceId: string): Observable<any> {
return this.http.get(`/api/resource/${resourceId}/download`, { responseType: 'arraybuffer', observe: 'response' }).pipe(
map((response) => {
const headers = response.headers;
const filename = headers.get('x-filename');
const contentType = headers.get('content-type');
const linkElement = document.createElement('a');
try {
const blob = new Blob([response.body], { type: contentType });
const url = URL.createObjectURL(blob);
linkElement.setAttribute('href', url);
linkElement.setAttribute('download', filename);
const clickEvent = new MouseEvent('click',
{
view: window,
bubbles: true,
cancelable: false
}
);
linkElement.dispatchEvent(clickEvent);
return null;
} catch (e) {
throw e;
}
})
);
}
public saveResource(resource: Resource, config?: RequestConfig): Observable<Resource> {
return this.http.post<Resource>('/api/resource', resource, defaultHttpOptionsFromConfig(config));
}
public deleteResource(resourceId: string, config?: RequestConfig) {
return this.http.delete(`/api/resource/${resourceId}`, defaultHttpOptionsFromConfig(config));
}
}