fix(downloads): resume interrupted Xtream VOD transfers (#1329)

* fix(downloads): resume interrupted Xtream VOD transfers

* fix(downloads): validate partials before resuming

* fix(downloads): propagate headers to episode transfers

libs/ui/components/src/lib/season-container/episode-download.util.ts

@@ -1,5 +1,6 @@
 import {
     DownloadMetadataSnapshot,
+    XTREAM_CLIENT_USER_AGENT,
     XtreamSerieEpisode,
     XtreamSerieEpisodeInfo,
 } from '@iptvnator/shared/interfaces';
@@ -19,6 +20,9 @@ export interface XtreamEpisodeDownloadContext {
     serverUrl?: string;
     username?: string;
     password?: string;
+    userAgent?: string;
+    referrer?: string;
+    origin?: string;
 }
 
 /** Provider-neutral metadata already loaded by the detail host. */
@@ -34,6 +38,11 @@ export interface XtreamEpisodeDownloadRequest {
     seriesXtreamId: number;
     seasonNumber: number;
     episodeNumber: number;
+    headers: {
+        userAgent: string;
+        referer?: string;
+        origin?: string;
+    };
     metadataSnapshot?: DownloadMetadataSnapshot;
 }
 
@@ -150,6 +159,11 @@ export function buildXtreamEpisodeDownloadRequest(options: {
         seriesXtreamId: seriesId,
         seasonNumber,
         episodeNumber,
+        headers: {
+            userAgent: context.userAgent?.trim() || XTREAM_CLIENT_USER_AGENT,
+            referer: context.referrer,
+            origin: context.origin,
+        },
         ...(options.metadataContext
             ? {
                   metadataSnapshot: buildMetadataSnapshot(

libs/ui/components/src/lib/season-container/episode-utils.spec.ts

@@ -1,4 +1,7 @@
-import { XtreamSerieEpisode } from '@iptvnator/shared/interfaces';
+import {
+    XTREAM_CLIENT_USER_AGENT,
+    XtreamSerieEpisode,
+} from '@iptvnator/shared/interfaces';
 import {
     buildXtreamEpisodeDownloadRequest,
     getEpisodeDownloadId,
@@ -76,6 +79,35 @@ describe('episode-download.util', () => {
             seriesXtreamId: 900,
             seasonNumber: 2,
             episodeNumber: 3,
+            headers: {
+                userAgent: XTREAM_CLIENT_USER_AGENT,
+                referer: undefined,
+                origin: undefined,
+            },
+        });
+    });
+
+    it('forwards playlist request headers for the first episode transfer', () => {
+        const request = buildXtreamEpisodeDownloadRequest({
+            episode: episode({ id: '55' }),
+            context: {
+                serverUrl: 'http://host',
+                username: 'u',
+                password: 'p',
+                userAgent: 'Provider Player/1.0',
+                referrer: 'https://provider.test/player',
+                origin: 'https://provider.test',
+            },
+            playlistId: 'pl-1',
+            seriesId: 900,
+            seriesTitle: 'Show',
+            fallbackSeasonKey: '1',
+        });
+
+        expect(request.headers).toEqual({
+            userAgent: 'Provider Player/1.0',
+            referer: 'https://provider.test/player',
+            origin: 'https://provider.test',
         });
     });
 

libs/ui/components/src/lib/season-container/season-container.component.spec.ts

@@ -157,6 +157,9 @@ describe('SeasonContainerComponent', () => {
             serverUrl: 'http://host',
             username: 'u',
             password: 'p',
+            userAgent: 'Provider Player/1.0',
+            referrer: 'https://provider.test/player',
+            origin: 'https://provider.test',
         });
         fixture.componentRef.setInput('downloadMetadataContext', {
             language: 'en',
@@ -170,6 +173,11 @@ describe('SeasonContainerComponent', () => {
         expect(downloadsServiceStub.startDownload).toHaveBeenCalledWith(
             expect.objectContaining({
                 title: 'Signal House - S01E01 - Pilot',
+                headers: {
+                    userAgent: 'Provider Player/1.0',
+                    referer: 'https://provider.test/player',
+                    origin: 'https://provider.test',
+                },
                 metadataSnapshot: expect.objectContaining({
                     mediaKind: 'series',
                     title: 'Signal House',

libs/ui/components/src/lib/season-container/season-container.component.ts

@@ -36,6 +36,7 @@ import {
     getEpisodeDownloadId,
     isStalkerEpisode,
     type SeasonContainerDownloadMetadataContext,
+    type XtreamEpisodeDownloadContext,
 } from './episode-download.util';
 import {
     EPISODE_INFO_PLAY,
@@ -51,11 +52,7 @@ import { SeasonTabsComponent } from './season-tabs.component';
 type EpisodeViewMode = 'grid' | 'list';
 const EPISODE_VIEW_MODE_KEY = 'iptvnator_episode_view_mode';
 
-export interface SeasonContainerXtreamDownloadContext {
-    serverUrl?: string;
-    username?: string;
-    password?: string;
-}
+export type SeasonContainerXtreamDownloadContext = XtreamEpisodeDownloadContext;
 
 export type { SeasonContainerDownloadMetadataContext } from './episode-download.util';