47 lines
1.8 KiB
TypeScript
47 lines
1.8 KiB
TypeScript
import { FilteredLearningObject, LearningObjectIdentifier, LearningPathIdentifier } from '../../interfaces/learning-content.js';
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import dwengoApiLearningObjectProvider from './dwengo-api-learning-object-provider.js';
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import { LearningObjectProvider } from './learning-object-provider.js';
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import { EnvVars, getEnvVar } from '../../util/envvars.js';
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import databaseLearningObjectProvider from './database-learning-object-provider.js';
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function getProvider(id: LearningObjectIdentifier): LearningObjectProvider {
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if (id.hruid.startsWith(getEnvVar(EnvVars.UserContentPrefix))) {
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return databaseLearningObjectProvider;
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}
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return dwengoApiLearningObjectProvider;
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}
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/**
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* Service providing access to data about learning objects from the appropriate data source (database or Dwengo-api)
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*/
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const learningObjectService = {
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/**
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* Fetches a single learning object by its HRUID
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*/
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getLearningObjectById(id: LearningObjectIdentifier): Promise<FilteredLearningObject | null> {
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return getProvider(id).getLearningObjectById(id);
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},
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/**
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* Fetch full learning object data (metadata)
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*/
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getLearningObjectsFromPath(id: LearningPathIdentifier): Promise<FilteredLearningObject[]> {
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return getProvider(id).getLearningObjectsFromPath(id);
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},
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/**
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* Fetch only learning object HRUIDs
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*/
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getLearningObjectIdsFromPath(id: LearningPathIdentifier): Promise<string[]> {
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return getProvider(id).getLearningObjectIdsFromPath(id);
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},
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/**
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* Obtain a HTML-rendering of the learning object with the given identifier (as a string).
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*/
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getLearningObjectHTML(id: LearningObjectIdentifier): Promise<string | null> {
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return getProvider(id).getLearningObjectHTML(id);
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},
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};
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export default learningObjectService;
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