Merge pull request #3978 from dpalou/MOBILE-3622

MOBILE-3622 h5p: Apply styles defined in h5pcustomcss

src/addons/mod/h5pactivity/services/handlers/prefetch.ts

@@ -115,6 +115,7 @@ export class AddonModH5PActivityPrefetchHandlerService extends CoreCourseActivit
             this.prefetchWSData(h5pActivity, siteId),
             CoreFilepool.addFilesToQueue(siteId, introFiles, AddonModH5PActivityProvider.COMPONENT, module.id),
             this.prefetchMainFile(module, h5pActivity, siteId),
+            CoreH5P.getCustomCssSrc(siteId),
         ]);
     }
 

src/core/features/h5p/assets/moodle/js/params.js

@@ -48,6 +48,9 @@ if (window.H5PIntegration && window.H5PIntegration.contents && location.search)
             window.H5PIntegration.saveFreq = nameAndValue[1];
         } else if (nameAndValue[0] == 'state' && nameAndValue[1] !== undefined && contentData) {
             contentData.contentUserData = [{ state: decodeURIComponent(nameAndValue[1]) }];
+        } else if (nameAndValue[0] == 'customCssUrl' && nameAndValue[1] !== undefined) {
+            contentData.styles = contentData.styles || [];
+            contentData.styles.push(nameAndValue[1]);
         }
     });
 }

src/core/features/h5p/classes/player.ts

@@ -298,6 +298,11 @@ export class CoreH5PPlayer {
             params.state = otherOptions.state;
         }
 
+        const customCssUrl = await CoreUtils.ignoreErrors(CoreH5P.getCustomCssSrc(siteId));
+        if (customCssUrl) {
+            params.customCssUrl = customCssUrl;
+        }
+
         return CoreUrlUtils.addParamsToUrl(path, params);
     }
 

src/core/features/h5p/services/h5p.ts

@@ -30,6 +30,9 @@ import { makeSingleton } from '@singletons';
 import { CoreError } from '@classes/errors/error';
 import { CorePath } from '@singletons/path';
 import { CoreSiteWSPreSets } from '@classes/sites/authenticated-site';
+import { CoreFilepool } from '@services/filepool';
+import { DownloadStatus } from '@/core/constants';
+import { CoreUtils } from '@services/utils/utils';
 
 /**
  * Service to provide H5P functionalities.
@@ -44,7 +47,8 @@ export class CoreH5PProvider {
     h5pValidator: CoreH5PValidator;
     queueRunner: CoreQueueRunner;
 
-    protected readonly ROOT_CACHE_KEY = 'CoreH5P:';
+    protected static readonly ROOT_CACHE_KEY = 'CoreH5P:';
+    protected static readonly CUSTOM_CSS_COMPONENT = 'CoreH5PCustomCSS';
 
     constructor() {
         this.queueRunner = new CoreQueueRunner(1);
@@ -82,6 +86,36 @@ export class CoreH5PProvider {
         return !!(site?.wsAvailable('core_h5p_get_trusted_h5p_file'));
     }
 
+    /**
+     * Get the src URL to load custom CSS styles for H5P.
+     *
+     * @param siteId Site ID. If not defined, current site.
+     * @returns Src URL, undefined if no custom CSS.
+     */
+    async getCustomCssSrc(siteId?: string): Promise<string | undefined> {
+        const site = await CoreSites.getSite(siteId);
+
+        const customCssUrl = await site.getStoredConfig('h5pcustomcssurl');
+        if (!customCssUrl) {
+            return;
+        }
+
+        const state = await CoreFilepool.getFileStateByUrl(site.getId(), customCssUrl);
+        if (state === DownloadStatus.DOWNLOADABLE_NOT_DOWNLOADED) {
+            // File not downloaded, URL has changed or first time. Delete previously downloaded file.
+            await CoreUtils.ignoreErrors(
+                CoreFilepool.removeFilesByComponent(site.getId(), CoreH5PProvider.CUSTOM_CSS_COMPONENT, 1),
+            );
+        }
+
+        if (state !== DownloadStatus.DOWNLOADED) {
+            // Download CSS styles first.
+            await CoreFilepool.downloadUrl(site.getId(), customCssUrl, false, CoreH5PProvider.CUSTOM_CSS_COMPONENT, 1);
+        }
+
+        return await CoreFilepool.getInternalSrcByUrl(site.getId(), customCssUrl);
+    }
+
     /**
      * Get a trusted H5P file.
      *
@@ -148,7 +182,7 @@ export class CoreH5PProvider {
      * @returns Cache key.
      */
     protected getTrustedH5PFilePrefixCacheKey(): string {
-        return this.ROOT_CACHE_KEY + 'trustedH5PFile:';
+        return CoreH5PProvider.ROOT_CACHE_KEY + 'trustedH5PFile:';
     }
 
     /**

src/core/services/filepool.ts

@@ -1718,6 +1718,24 @@ export class CoreFilepoolProvider {
         return CoreFile.getFileEntryURL(fileEntry);
     }
 
+    /**
+     * Returns the local src of a file.
+     *
+     * @param siteId The site ID.
+     * @param fileUrl The file URL.
+     * @returns Src URL.
+     */
+    async getInternalSrcByUrl(siteId: string, fileUrl: string): Promise<string> {
+        if (!CoreFile.isAvailable()) {
+            throw new CoreError('File system cannot be used.');
+        }
+
+        const file = await this.fixPluginfileURL(siteId, fileUrl);
+        const fileId = this.getFileIdByUrl(CoreFileHelper.getFileUrl(file));
+
+        return this.getInternalSrcById(siteId, fileId);
+    }
+
     /**
      * Returns the local URL of a file.
      *