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import { requestRest } from '../../../../framework/src/services/restService';
import { TocTreeNode, TocNodeCollection } from '../models/tocNode';
class HelpService {
private tocNodeCollection: TocTreeNode[] | null = null;
private documents: { [path: string]: string | null } = {};
public async getDocument(path: string): Promise<string | null> {
// check if the result is allready in the cache
if (this.documents[path]) return Promise.resolve(this.documents[path]);
// request the document
const result = await requestRest<string>(`/help/${ path }`.replace(/\/{2,}/i, '/'));
if (result) {
this.documents[path] = result;
}
return this.documents[path] || null;
}
public async getTableOfContents(): Promise<TocTreeNode[] | null> {
// check if the result is allready in the cache
if (this.tocNodeCollection) return Promise.resolve(this.tocNodeCollection);
// request the table of contents
const result = await requestRest<TocNodeCollection>('/help/?meta', undefined, false);
if (result !== false) {
const mapNodesCollection = (col: TocNodeCollection): TocTreeNode[] => {
return Object.keys(col).reduce <TocTreeNode[]>((acc, key) => {
const current = col[key];
acc.push({
label: current.label,
uri: current.versions.current.path,
nodes: current.nodes && mapNodesCollection(current.nodes) || undefined
});
return acc;
}, []);
}
this.tocNodeCollection = result && mapNodesCollection(result);
}
return this.tocNodeCollection || null;
}
}
export const helpService = new HelpService();
export default helpService;
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