feat: добавил поддержку подписки на календарь и экспорт расписания лекций в формате .ics

frontend/src/api/client.ts

@@ -81,3 +81,30 @@ export function extractItems<T>(payload: T[] | { items?: T[] } | undefined): T[]
   if (Array.isArray(payload)) return payload
   return payload?.items ?? []
 }
+
+
+export async function apiRequestBlob(
+  path: string,
+  options: RequestInit & { query?: Record<string, unknown> } = {},
+): Promise<Blob> {
+  const headers = new Headers(options.headers)
+  if (!headers.has('Accept')) headers.set('Accept', 'text/calendar')
+  if (accessToken) headers.set('Authorization', `Bearer ${accessToken}`)
+
+  const response = await fetch(makeUrl(path, options.query), {
+    ...options,
+    headers,
+    credentials: 'include',
+  })
+
+  if (!response.ok) {
+    const body = await parseResponse(response)
+    const message =
+      typeof body === 'object' && body && 'message' in body
+        ? String((body as { message: unknown }).message)
+        : `API request failed with status ${response.status}`
+    throw new ApiError(message, response.status, body)
+  }
+
+  return response.blob()
+}

frontend/src/api/index.ts

@@ -1,4 +1,4 @@
-import { apiRequest, extractItems } from './client'
+import { apiRequest, apiRequestBlob, extractItems } from './client'
 import type {
   AchievementDto,
   AuthResponse,
@@ -19,6 +19,7 @@ import type {
   UpdateReviewPromptRequest,
   UserAchievementDto,
   AdminDashboardStatsDto,
+  CalendarSubscriptionDto,
   CurrentUserDto,
   UserDto,
   UserQuery,
@@ -76,6 +77,11 @@ export const usersApi = {
     )
     return extractItems(payload)
   },
+  downloadMyEnrollmentsIcs: () => apiRequestBlob('/users/me/enrollments.ics'),
+  downloadEnrollmentIcs: (lectureId: string | number) =>
+    apiRequestBlob(`/users/me/enrollments/${lectureId}.ics`),
+  getCalendarSubscription: () =>
+    apiRequest<CalendarSubscriptionDto>('/users/me/enrollments/calendar-subscription'),
   async myAchievements() {
     const payload = await apiRequest<
       PagedResult<UserAchievementDto> | UserAchievementDto[] | AchievementDto[]

frontend/src/api/types.ts

@@ -83,6 +83,10 @@ export interface AdminDashboardStatsDto {
   pendingReviewsCount: number
 }
 
+export interface CalendarSubscriptionDto {
+  feedUrl: string
+}
+
 export interface EnrollmentSlotRuleDto {
   level: number
   slots: number