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import { NOTEBOOKS_METADATA_FILE_NAME, NOTEBOOKS_STATUS_FILE_NAME } from './constants';
import { INotebookMetadata } from './notebook-metadata';
import { INotebookStatus } from './notebook-status';
export const SORT_OPTIONS = {
RECENTLY_ADDED: 'Recently Added',
RECENTLY_UPDATED: 'Recently Updated',
NAME_ASCENDING: 'Name (A-Z)',
NAME_DESCENDING: 'Name (Z-A)',
} as const;
export type SortValues = (typeof SORT_OPTIONS)[keyof typeof SORT_OPTIONS];
interface INotebooksFilters {
tags: INotebookMetadata['tags'];
searchValue: string;
sort: SortValues;
offset: number;
limit: number;
}
type NotebooksMap = Record<string, INotebookMetadata & { status?: INotebookStatus['status'] }>;
export type NotebookItem = NotebooksMap[string];
class NotebooksService {
private _notebooksMap: NotebooksMap | null = null;
private async _getNotebooksMap(): Promise<NotebooksMap> {
if (!this._notebooksMap) {
const { BASE_URL } = import.meta.env;
const notebooksMetadataMap = (await fetch(`${BASE_URL}${NOTEBOOKS_METADATA_FILE_NAME}`).then((response) =>
response.json()
)) as Record<string, INotebookMetadata>;
const notebooksStatusMap = (await fetch(`${BASE_URL}${NOTEBOOKS_STATUS_FILE_NAME}`).then((response) =>
response.ok ? response.json() : {}
)) as Record<string, INotebookStatus>;
this._notebooksMap = this._getNotebooksMapWithStatuses(notebooksMetadataMap, notebooksStatusMap);
}
return this._notebooksMap;
}
async getNotebooks({
tags,
searchValue,
sort,
offset,
limit,
}: INotebooksFilters): Promise<[INotebookMetadata[], number, number]> {
const notebooks = Object.values(await this._getNotebooksMap());
const filteredNotebooks = notebooks
.filter((notebook) => {
const flatNotebookTags = Object.values(notebook.tags).flat();
const flatSelectedTags = Object.values(tags).flat();
return flatSelectedTags.every((tag) => flatNotebookTags.includes(tag));
})
.filter(({ title }) => title.toLowerCase().includes(searchValue.toLowerCase()));
const sortedPaginatedNotebooks = filteredNotebooks.sort(this._getCompareFn(sort)).slice(offset, offset + limit);
return [sortedPaginatedNotebooks, filteredNotebooks.length, notebooks.length];
}
async getOtherTags(): Promise<string[]> {
const notebooks = Object.values(await this._getNotebooksMap());
return notebooks
.reduce((acc, { tags }) => {
for (const tag of tags.other) {
if (!acc.includes(tag)) {
acc.push(tag);
}
}
return acc;
}, [] as string[])
.sort((a, b) => a.toUpperCase().localeCompare(b.toUpperCase()));
}
private _getCompareFn(sort: SortValues): Parameters<Array<INotebookMetadata>['sort']>[0] {
if (sort === SORT_OPTIONS.RECENTLY_ADDED) {
return (a: INotebookMetadata, b: INotebookMetadata) =>
new Date(b.createdDate).getTime() - new Date(a.createdDate).getTime();
}
if (sort === SORT_OPTIONS.RECENTLY_UPDATED) {
return (a: INotebookMetadata, b: INotebookMetadata) =>
new Date(b.modifiedDate).getTime() - new Date(a.modifiedDate).getTime();
}
if (sort === SORT_OPTIONS.NAME_ASCENDING) {
return (a: INotebookMetadata, b: INotebookMetadata) => a.title.toUpperCase().localeCompare(b.title.toUpperCase());
}
if (sort === SORT_OPTIONS.NAME_DESCENDING) {
return (a: INotebookMetadata, b: INotebookMetadata) => b.title.toUpperCase().localeCompare(a.title.toUpperCase());
}
}
private _getNotebooksMapWithStatuses(
metadataMap: Record<string, INotebookMetadata>,
statusMap: Record<string, INotebookStatus>
): NotebooksMap {
const result = { ...metadataMap } as NotebooksMap;
for (const [notebookPath, { status }] of Object.entries(statusMap)) {
if (!result[notebookPath]) {
console.warn(`Unknown notebook "${notebookPath}" found in status report.`);
continue;
}
if (result[notebookPath].status) {
console.warn(`Status of the notebook "${notebookPath}" already exists and will be overrided.`);
}
result[notebookPath].status = status;
}
return result;
}
}
export const notebooksService = new NotebooksService();
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