openaire-library/landingPages/annotation/annotation.service.ts

111 lines
3.2 KiB
TypeScript

import {Injectable} from "@angular/core";
import {HttpClient} from "@angular/common/http";
import {Observable} from "rxjs";
import {EnvProperties} from "../../utils/properties/env-properties";
import {map} from "rxjs/operators";
import {properties} from "../../../../environments/environment";
export interface AnnotationTarget {
id: string;
url: string;
}
export interface Annotation {
text: string;
type: 'semantic' | 'keyword' | 'comment';
targets?: AnnotationTarget[];
targetSize?: number;
}
@Injectable({
providedIn: "root"
})
export class AnnotationService {
api = 'api/';
constructor(private http: HttpClient) {
}
getAllAnnotations(source: string): Observable<Annotation[]> {
let url = properties.b2noteAPIURL + this.api + 'annotations?target-id=' + encodeURIComponent(source);
return this.http.get<Annotation[]>(url).pipe(map((response: any[]) => {
return this.parseAnnotations(response);
}));
}
getAnnotationsTargets(value: string, type: 'semantic' | 'keyword' | 'comment'): Observable<AnnotationTarget[]> {
let url = properties.b2noteAPIURL + this.api + 'annotations?value=' + encodeURIComponent(value);
return this.http.get<AnnotationTarget[]>(url).pipe(map((response: any[]) => {
return this.parseAnnotationTargets(response, type);
}));
}
private parseAnnotations(response: any[]): Annotation[] {
let annotations: Annotation[] = [];
if (response && response.length > 0) {
response.forEach(value => {
if (value.visibility === 'public') {
let body = value.body;
if (body.type === 'TextualBody') {
if (body.purpose === 'tagging') {
annotations.push({
text: body.value,
type: "keyword"
});
} else {
annotations.push({
text: body.value,
type: "comment"
});
}
} else {
let items = body.items;
let text: string = null;
items.forEach(item => {
if (item.type === 'TextualBody') {
text = item.value;
}
});
annotations.push({
text: text,
type: "semantic"
});
}
}
});
}
return annotations;
}
private parseAnnotationTargets(response: any[], type: 'semantic' | 'keyword' | 'comment'): AnnotationTarget[] {
let targets: AnnotationTarget[] = [];
if (response && response.length > 0) {
response.forEach(value => {
if (value.visibility === 'public') {
let body = value.body;
if (body.type === 'TextualBody') {
if (body.purpose === 'tagging' && type === 'keyword') {
targets.push({
id: value.target.id,
url: value.target.source
});
} else if(type === 'comment'){
targets.push({
id: value.target.id,
url: value.target.source
});
}
} else if(type === 'semantic'){
targets.push({
id: value.target.id,
url: value.target.source
});
}
}
});
}
return targets;
}
}