2025SELab2-project-Dwengo/backend/src/controllers/learning-paths.ts
2025-03-30 12:54:22 +00:00

65 lines
2.5 KiB
TypeScript

import { Request, Response } from 'express';
import { themes } from '../data/themes.js';
import { FALLBACK_LANG } from '../config.js';
import learningPathService from '../services/learning-paths/learning-path-service.js';
import { Language } from '../entities/content/language.js';
import {
PersonalizationTarget,
personalizedForGroup,
personalizedForStudent,
} from '../services/learning-paths/learning-path-personalization-util.js';
import { BadRequestException } from '../exceptions/bad-request-exception.js';
import { NotFoundException } from '../exceptions/not-found-exception.js';
/**
* Fetch learning paths based on query parameters.
*/
export async function getLearningPaths(req: Request, res: Response): Promise<void> {
const hruids = req.query.hruid;
const themeKey = req.query.theme as string;
const searchQuery = req.query.search as string;
const language = (req.query.language as string) || FALLBACK_LANG;
const forStudent = req.query.forStudent as string;
const forGroupNo = req.query.forGroup as string;
const assignmentNo = req.query.assignmentNo as string;
const classId = req.query.classId as string;
let personalizationTarget: PersonalizationTarget | undefined;
if (forStudent) {
personalizationTarget = await personalizedForStudent(forStudent);
} else if (forGroupNo) {
if (!assignmentNo || !classId) {
throw new BadRequestException('If forGroupNo is specified, assignmentNo and classId must also be specified.');
}
personalizationTarget = await personalizedForGroup(classId, parseInt(assignmentNo), parseInt(forGroupNo));
}
let hruidList;
if (hruids) {
hruidList = Array.isArray(hruids) ? hruids.map(String) : [String(hruids)];
} else if (themeKey) {
const theme = themes.find((t) => t.title === themeKey);
if (theme) {
hruidList = theme.hruids;
} else {
throw new NotFoundException(`Theme "${themeKey}" not found.`);
}
} else if (searchQuery) {
const searchResults = await learningPathService.searchLearningPaths(searchQuery, language as Language, personalizationTarget);
res.json(searchResults);
return;
} else {
hruidList = themes.flatMap((theme) => theme.hruids);
}
const learningPaths = await learningPathService.fetchLearningPaths(
hruidList,
language as Language,
`HRUIDs: ${hruidList.join(', ')}`,
personalizationTarget
);
res.json(learningPaths.data);
}