tdpeuter/2025SELab2-project-Dwengo
tdpeuter/2025SELab2-project-Dwengo
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fix: opslitsing learningpath controller met extra service + api helper

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Gabriellvl 2025-03-01 17:52:55 +01:00
parent 91eb374b7e
commit f7d6cbce65
4 changed files with 98 additions and 116 deletions
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143
backend/src/controllers/learningPaths.ts
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@ -1,100 +1,68 @@
import { Request, Response } from 'express';
import axios from 'axios';
import { themes } from '../data/themes.js';
import { DWENGO_API_BASE } from '../config/config.js';
import { fetchWithLogging } from "../util/apiHelper.js";
import { fetchLearningPaths } from "../services/learningPaths.js";
/**
* Fetch learning paths for a given list of HRUIDs.
* This function sends a request to the Dwengo API with the provided HRUIDs.
* Fetch learning paths based on HRUIDs or return all if no HRUIDs are provided.
* - If `hruids` are given -> fetch specific learning paths.
* - If `hruids` is missing -> return all available learning paths.
*/
export async function getLearningPathsFromIds(
req: Request,
res: Response
): Promise<void> {
export async function getLearningPaths(req: Request, res: Response): Promise<void> {
try {
const { hruids } = req.query;
const language = (req.query.language as string) || 'nl'; // Default to Dutch
const hruids = req.query.hruids; // Can be string or array
const language = (req.query.language as string) || 'nl';
if (!hruids) {
res.status(400).json({
error: 'Missing required parameter: hruids',
});
return;
let hruidList: string[] = [];
if (hruids) {
hruidList = Array.isArray(hruids) ? hruids.map(String) : [String(hruids)];
} else {
// If no hruids are provided, fetch ALL learning paths
hruidList = themes.flatMap((theme) => theme.hruids);
}
// Convert the input to an array if it's a string
const hruidList = Array.isArray(hruids) ? hruids : [hruids];
const learningPaths = await fetchLearningPaths(hruidList, language, `HRUIDs: ${hruidList.join(', ')}`);
// Request learning paths from Dwengo API
const response = await axios.get(
`${DWENGO_API_BASE}/learningPath/getPathsFromIdList`,
{
params: {
pathIdList: JSON.stringify({ hruids: hruidList }),
language,
},
}
);
res.json(response.data);
res.json(learningPaths);
} catch (error) {
console.error('Error fetching learning paths:', error);
console.error('❌ Unexpected error fetching learning paths:', error);
res.status(500).json({ error: 'Internal server error' });
}
}
/**
* Fetch all learning paths for a specific theme.
* First retrieves the HRUIDs associated with the theme,
* then fetches the corresponding learning paths from the Dwengo API.
*/
export async function getLearningPathsByTheme(
req: Request,
res: Response
): Promise<void> {
export async function getLearningPathsByTheme(req: Request, res: Response): Promise<void> {
try {
const themeKey = req.params.theme;
const language = (req.query.language as string) || 'nl'; // Default to Dutch
// Find the theme by its title
const theme = themes.find((t) => {
return t.title === themeKey;
});
const language = (req.query.language as string) || 'nl';
const theme = themes.find((t) => t.title === themeKey);
if (!theme) {
console.error(`⚠️ WARNING: Theme "${themeKey}" not found.`);
res.status(404).json({ error: 'Theme not found' });
return;
}
// Extract HRUIDs from the theme
const hruidList = theme.hruids;
// Request learning paths from Dwengo API using the extracted HRUIDs
const response = await axios.get(
`${DWENGO_API_BASE}/learningPath/getPathsFromIdList`,
{
params: {
pathIdList: JSON.stringify({ hruids: hruidList }),
language,
},
}
);
const response = await fetchLearningPaths(theme.hruids, language, `theme "${themeKey}"`);
res.json({
theme: themeKey,
hruids: hruidList,
learningPaths: response.data,
hruids: theme.hruids,
...response,
});
} catch (error) {
console.error('Error fetching learning paths for theme:', error);
res.status(500).json({ error: 'Internal server error' });
console.error('❌ Unexpected error fetching learning paths by theme:', error);
}
}
export async function searchLearningPaths(
req: Request,
res: Response
): Promise<void> {
/**
* Search learning paths by query.
*/
export async function searchLearningPaths(req: Request, res: Response): Promise<void> {
try {
const query = req.query.query as string;
const language = (req.query.language as string) || 'nl';
@ -104,51 +72,12 @@ export async function searchLearningPaths(
return;
}
const response = await axios.get(
`${DWENGO_API_BASE}/learningPath/search`,
{
params: { all: query, language },
}
);
const apiUrl = `${DWENGO_API_BASE}/learningPath/search`;
const params = { all: query, language };
res.json(response.data);
const searchResults = await fetchWithLogging<any>(apiUrl, `Search learning paths with query "${query}"`, params);
res.json(searchResults ?? []);
} catch (error) {
console.error('Error searching learning paths:', error);
res.status(500).json({ error: 'Internal server error' });
}
}
export async function getAllLearningPaths(
req: Request,
res: Response
): Promise<void> {
try {
const language = (req.query.language as string) || 'nl'; // Default to Dutch
// Collect all HRUIDs from all themes
const allHruids: string[] = themes.flatMap((theme) => {
return theme.hruids;
});
if (allHruids.length === 0) {
res.status(404).json({ error: 'No HRUIDs found in themes' });
return;
}
// Call the Dwengo API with all HRUIDs combined
const response = await axios.get(
`${DWENGO_API_BASE}/learningPath/getPathsFromIdList`,
{
params: {
pathIdList: JSON.stringify({ hruids: allHruids }),
language,
},
}
);
res.json(response.data);
} catch (error) {
console.error('Error fetching all learning paths:', error);
res.status(500).json({ error: 'Internal server error' });
console.error('❌ Unexpected error searching learning paths:', error);
}
}

13
backend/src/services/learningObjects.ts
View file

@ -64,14 +64,15 @@ export async function getLearningObjectsFromPath(
return await Promise.all(
learningPathData.nodes.map(async (node: LearningObjectNode) => {
const metadataUrl = `${DWENGO_API_BASE}/learningObject/getMetadata?hruid=${node.learningobject_hruid}&version=${node.version}&language=${language}`;
const metadataResponse = await axios.get(metadataUrl);
const metadata = await fetchWithLogging(
metadataUrl,
`Metadata for Learning Object HRUID "${node.learningobject_hruid}" (version ${node.version}, language ${language})`
);
if (!metadata) return null;
const htmlUrl = `${DWENGO_API_BASE}/learningObject/getRaw?hruid=${node.learningobject_hruid}&version=${node.version}&language=${language}`;
return filterLearningObjectMetadata(
metadataResponse.data,
htmlUrl
);
return filterLearningObjectMetadata(metadata, htmlUrl);
})
);
} catch (error) {

45
backend/src/services/learningPaths.ts Normal file
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@ -0,0 +1,45 @@
import { fetchWithLogging } from "../util/apiHelper.js";
import { DWENGO_API_BASE } from "../config/config.js";
interface LearningPathResponse {
success: boolean;
source: string;
data: any[] | null;
message?: string;
}
export async function fetchLearningPaths(
hruids: string[],
language: string,
source: string
): Promise<LearningPathResponse> {
if (hruids.length === 0) {
return {
success: false,
source,
data: null,
message: `No HRUIDs provided for ${source}.`,
};
}
const apiUrl = `${DWENGO_API_BASE}/learningPath/getPathsFromIdList`;
const params = { pathIdList: JSON.stringify({ hruids }), language };
const learningPaths = await fetchWithLogging<any>(apiUrl, `Learning paths for ${source}`, params);
if (!learningPaths || learningPaths.length === 0) {
console.error(`⚠️ WARNING: No learning paths found for ${source}.`);
return {
success: false,
source,
data: [],
message: `No learning paths found for ${source}.`,
};
}
return {
success: true,
source,
data: learningPaths,
};
}

13
backend/src/util/apiHelper.ts
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@ -1,4 +1,4 @@
import axios from 'axios';
import axios, {AxiosRequestConfig} from 'axios';
// !!!! when logger is done -> change
@ -8,11 +8,18 @@ import axios from 'axios';
*
* @param url The API endpoint to fetch from.
* @param description A short description of what is being fetched (for logging).
* @param params
* @returns The response data if successful, or null if an error occurs.
*/
export async function fetchWithLogging<T>(url: string, description: string): Promise<T | null> {
export async function fetchWithLogging<T>(
url: string,
description: string,
params?: Record<string,any>
): Promise<T | null> {
try {
const response = await axios.get<T>(url);
const config: AxiosRequestConfig = params ? { params } : {};
const response = await axios.get<T>(url, config);
return response.data;
} catch (error: any) {
if (error.response) {