Merge remote-tracking branch 'origin/dev' into feat/user-routes

# Conflicts:
#	backend/src/controllers/learning-objects.ts
#	frontend/src/controllers/controllers.ts
#	frontend/src/queries/themes.ts

README.md

@@ -35,12 +35,8 @@ Om de applicatie lokaal te draaien als kant-en-klare Docker-containers:
 ```bash
 docker compose version
 git clone https://github.com/SELab-2/Dwengo-1.git
-cd Dwengo-1/backend
-cp .env.example .env
-# Pas .env aan
-nano .env
-cd ..
 docker compose -f compose.staging.yml up --build
+# Gebruikt backend/.env.staging
 ```
 
 ### Handmatige installatie en ontwikkeling

backend/.env.staging

@@ -0,0 +1,21 @@
+PORT=3000
+DWENGO_DB_HOST=db
+DWENGO_DB_PORT=5432
+DWENGO_DB_USERNAME=postgres
+DWENGO_DB_PASSWORD=postgres
+DWENGO_DB_UPDATE=false
+
+DWENGO_AUTH_STUDENT_URL=http://localhost/idp/realms/student
+DWENGO_AUTH_STUDENT_CLIENT_ID=dwengo
+DWENGO_AUTH_STUDENT_JWKS_ENDPOINT=http://idp:7080/idp/realms/student/protocol/openid-connect/certs
+DWENGO_AUTH_TEACHER_URL=http://localhost/idp/realms/teacher
+DWENGO_AUTH_TEACHER_CLIENT_ID=dwengo
+DWENGO_AUTH_TEACHER_JWKS_ENDPOINT=http://idp:7080/idp/realms/teacher/protocol/openid-connect/certs
+
+# Allow Vite dev-server to access the backend (for testing purposes). Don't forget to remove this in production!
+#DWENGO_CORS_ALLOWED_ORIGINS=http://localhost/,127.0.0.1:80,http://127.0.0.1,http://localhost:80,http://127.0.0.1:80,localhost
+DWENGO_CORS_ALLOWED_ORIGINS=http://localhost/*,http://idp:7080,https://idp:7080
+
+# Logging and monitoring
+
+LOKI_HOST=http://logging:3102

backend/.env.test

@@ -1,3 +1,13 @@
-PORT=3000
+#
-DWENGO_DB_UPDATE=true
+# Test environment configuration
+#
+# Should not need to be modified.
+# See .env.example for more information.
+#
+
+### Dwengo ###
+
+DWENGO_PORT=3000
+
 DWENGO_DB_NAME=":memory:"
+DWENGO_DB_UPDATE=true

backend/.env.test.example

@@ -1,13 +0,0 @@
-#
-# Test environment configuration
-#
-# Should not need to be modified.
-# See .env.example for more information.
-#
-
-### Dwengo ###
-
-DWENGO_PORT=3000
-
-DWENGO_DB_NAME=":memory:"
-DWENGO_DB_UPDATE=true

backend/README.md

@@ -34,7 +34,9 @@ npm run test:unit
 
 ```shell
 # Omgevingsvariabelen
-cp .env.development.example .env
+cp .env.example .env
+# Configureer de .env file met de juiste waarden!
+nano .env
 
 npm run build
 npm run start

backend/src/controllers/learning-objects.ts

@@ -1,12 +1,12 @@
 import { Request, Response } from 'express';
 import { FALLBACK_LANG } from '../config.js';
+import { FilteredLearningObject, LearningObjectIdentifier, LearningPathIdentifier } from '../interfaces/learning-content.js';
 import learningObjectService from '../services/learning-objects/learning-object-service.js';
-import { envVars, getEnvVar } from '../util/envVars.js';
 import { Language } from '@dwengo-1/common/util/language';
 import attachmentService from '../services/learning-objects/attachment-service.js';
-import { NotFoundError } from '@mikro-orm/core';
 import { BadRequestException } from '../exceptions/bad-request-exception.js';
-import { FilteredLearningObject, LearningObjectIdentifier, LearningPathIdentifier } from '@dwengo-1/common/interfaces/learning-content';
+import { NotFoundException } from '../exceptions/not-found-exception.js';
+import { envVars, getEnvVar } from '../util/envVars.js';
 
 function getLearningObjectIdentifierFromRequest(req: Request): LearningObjectIdentifier {
     if (!req.params.hruid) {
@@ -47,6 +47,11 @@ export async function getLearningObject(req: Request, res: Response): Promise<vo
     const learningObjectId = getLearningObjectIdentifierFromRequest(req);
 
     const learningObject = await learningObjectService.getLearningObjectById(learningObjectId);
+
+    if (!learningObject) {
+        throw new NotFoundException('Learning object not found');
+    }
+
     res.json(learningObject);
 }
 
@@ -63,7 +68,7 @@ export async function getAttachment(req: Request, res: Response): Promise<void>
     const attachment = await attachmentService.getAttachment(learningObjectId, name);
 
     if (!attachment) {
-        throw new NotFoundError(`Attachment ${name} not found`);
+        throw new NotFoundException(`Attachment ${name} not found`);
     }
     res.setHeader('Content-Type', attachment.mimeType).send(attachment.content);
 }

backend/vitest.config.ts

@@ -4,6 +4,6 @@ export default defineConfig({
     test: {
         environment: 'node',
         globals: true,
-        testTimeout: 10000,
+        testTimeout: 100000,
     },
 });

compose.staging.yml

@@ -24,7 +24,7 @@ services:
             - '3000:3000/tcp'
         restart: unless-stopped
         volumes:
-            - ./backend/.env:/app/.env
+            - ./backend/.env.staging:/app/.env
         depends_on:
             - db
             - logging

frontend/src/components/BrowseThemes.vue

@@ -1,9 +1,10 @@
 <script setup lang="ts">
     import ThemeCard from "@/components/ThemeCard.vue";
-    import { ref, watchEffect, computed } from "vue";
+    import { ref, watchEffect, computed, type Ref } from "vue";
     import { useI18n } from "vue-i18n";
     import { AGE_TO_THEMES, THEMESITEMS } from "@/utils/constants.ts";
     import { useThemeQuery } from "@/queries/themes.ts";
+    import type { Theme } from "@/data-objects/theme.ts";
 
     const props = defineProps({
         selectedTheme: { type: String, required: true },
@@ -15,11 +16,11 @@
 
     const { data: allThemes, isLoading, error } = useThemeQuery(language);
 
-    const allCards = ref([]);
+    const allCards: Ref<Theme[]> = ref([]);
-    const cards = ref([]);
+    const cards: Ref<Theme[]> = ref([]);
 
     watchEffect(() => {
-        const themes = allThemes.value ?? [];
+        const themes: Theme[] = allThemes.value ?? [];
         allCards.value = themes;
 
         if (props.selectedTheme) {

frontend/src/components/LearningPath.vue

@@ -1,7 +0,0 @@
-<script setup lang="ts"></script>
-
-<template>
-    <main></main>
-</template>
-
-<style scoped></style>

frontend/src/components/LearningPathSearchField.vue

@@ -0,0 +1,34 @@
+<script setup lang="ts">
+    import { useI18n } from "vue-i18n";
+    import { useRoute, useRouter } from "vue-router";
+    import { computed, ref } from "vue";
+    const route = useRoute();
+    const router = useRouter();
+    const { t } = useI18n();
+
+    const SEARCH_PATH = "/learningPath/search";
+
+    const query = computed({
+        get: () => route.query.query as string | null,
+        set: async (newValue) => router.push({ path: SEARCH_PATH, query: { query: newValue } }),
+    });
+
+    const queryInput = ref(query.value);
+
+    function search(): void {
+        query.value = queryInput.value;
+    }
+</script>
+
+<template>
+    <v-text-field
+        class="search-field"
+        :label="t('search')"
+        append-inner-icon="mdi-magnify"
+        v-model="queryInput"
+        @keyup.enter="search()"
+        @click:append-inner="search()"
+    ></v-text-field>
+</template>
+
+<style scoped></style>

frontend/src/components/LearningPathsGrid.vue

@@ -0,0 +1,62 @@
+<script setup lang="ts">
+    import { convertBase64ToImageSrc } from "@/utils/base64ToImage.ts";
+    import type { LearningPath } from "@/data-objects/learning-paths/learning-path.ts";
+    import { useI18n } from "vue-i18n";
+
+    const { t } = useI18n();
+    const props = defineProps<{ learningPaths: LearningPath[] }>();
+</script>
+
+<template>
+    <div
+        class="results-grid"
+        v-if="props.learningPaths.length > 0"
+    >
+        <v-card
+            class="learning-path-card"
+            link
+            :to="`/learningPath/${learningPath.hruid}/${learningPath.language}/${learningPath.startNode.learningobjectHruid}`"
+            :key="`${learningPath.hruid}/${learningPath.language}`"
+            v-for="learningPath in props.learningPaths"
+        >
+            <v-img
+                height="300px"
+                :src="convertBase64ToImageSrc(learningPath.image)"
+                cover
+                v-if="learningPath.image"
+            ></v-img>
+            <v-card-title class="learning-path-title">{{ learningPath.title }}</v-card-title>
+            <v-card-subtitle>
+                <v-icon icon="mdi-human-male-boy"></v-icon>
+                <span>{{ learningPath.targetAges.min }} - {{ learningPath.targetAges.max }} {{ t("yearsAge") }}</span>
+            </v-card-subtitle>
+            <v-card-text>{{ learningPath.description }}</v-card-text>
+        </v-card>
+    </div>
+    <div
+        content="empty-state-container"
+        v-else
+    >
+        <v-empty-state
+            icon="mdi-emoticon-sad-outline"
+            :title="t('noLearningPathsFound')"
+            :text="t('noLearningPathsFoundDescription')"
+        ></v-empty-state>
+    </div>
+</template>
+
+<style scoped>
+    .learning-path-card {
+        width: 300px;
+    }
+    .learning-path-title {
+        white-space: normal;
+    }
+    .results-grid {
+        margin: 20px;
+        display: flex;
+        align-items: stretch;
+        gap: 20px;
+        flex-wrap: wrap;
+    }
+</style>

frontend/src/components/UsingQueryResult.vue

@@ -0,0 +1,45 @@
+<script setup lang="ts" generic="T">
+    import { computed } from "vue";
+    import { useI18n } from "vue-i18n";
+    import type { UseQueryReturnType } from "@tanstack/vue-query";
+
+    const props = defineProps<{
+        queryResult: UseQueryReturnType<T, Error>;
+    }>();
+
+    const { isLoading, isError, isSuccess, data, error } = props.queryResult;
+
+    const { t } = useI18n();
+
+    const errorMessage = computed(() => {
+        const errorWithMessage = (error.value as { message: string }) || null;
+        return errorWithMessage?.message || JSON.stringify(errorWithMessage);
+    });
+</script>
+
+<template>
+    <div
+        class="loading-div"
+        v-if="isLoading"
+    >
+        <v-progress-circular indeterminate></v-progress-circular>
+    </div>
+    <div v-if="isError">
+        <v-empty-state
+            icon="mdi-alert-circle-outline"
+            :text="errorMessage"
+            :title="t('error_title')"
+        ></v-empty-state>
+    </div>
+    <slot
+        v-if="isSuccess && data"
+        :data="data"
+    ></slot>
+</template>
+
+<style scoped>
+    .loading-div {
+        padding: 20px;
+        text-align: center;
+    }
+</style>

frontend/src/controllers/base-controller.ts

@@ -1,73 +1,47 @@
-import { apiConfig } from "@/config.ts";
+import apiClient from "@/services/api-client/api-client.ts";
+import type { AxiosResponse, ResponseType } from "axios";
+import { HttpErrorResponseException } from "@/exception/http-error-response-exception.ts";
 
-export class BaseController {
+export abstract class BaseController {
-    protected baseUrl: string;
+    protected basePath: string;
 
-    constructor(basePath: string) {
+    protected constructor(basePath: string) {
-        this.baseUrl = `${apiConfig.baseUrl}/${basePath}`;
+        this.basePath = basePath;
     }
 
-    protected async get<T>(path: string, queryParams?: Record<string, string | number | boolean>): Promise<T> {
+    private static assertSuccessResponse(response: AxiosResponse<unknown, unknown>): void {
-        let url = `${this.baseUrl}${path}`;
+        if (response.status / 100 !== 2) {
-        if (queryParams) {
+            throw new HttpErrorResponseException(response);
-            const query = new URLSearchParams();
-            Object.entries(queryParams).forEach(([key, value]) => {
-                if (value !== undefined && value !== null) {
-                    query.append(key, value.toString());
-                }
-            });
-            url += `?${query.toString()}`;
         }
+    }
 
-        const res = await fetch(url);
+    protected async get<T>(path: string, queryParams?: QueryParams, responseType?: ResponseType): Promise<T> {
-        if (!res.ok) {
+        const response = await apiClient.get<T>(this.absolutePathFor(path), { params: queryParams, responseType });
-            const errorData = await res.json().catch(() => ({}));
+        BaseController.assertSuccessResponse(response);
-            throw new Error(errorData?.error || `Error ${res.status}: ${res.statusText}`);
+        return response.data;
-        }
-
-        return res.json();
     }
 
     protected async post<T>(path: string, body: unknown): Promise<T> {
-        const res = await fetch(`${this.baseUrl}${path}`, {
+        const response = await apiClient.post<T>(this.absolutePathFor(path), body);
-            method: "POST",
+        BaseController.assertSuccessResponse(response);
-            headers: { "Content-Type": "application/json" },
+        return response.data;
-            body: JSON.stringify(body),
-        });
-
-        if (!res.ok) {
-            const errorData = await res.json().catch(() => ({}));
-            throw new Error(errorData?.error || `Error ${res.status}: ${res.statusText}`);
-        }
-
-        return res.json();
     }
 
     protected async delete<T>(path: string): Promise<T> {
-        const res = await fetch(`${this.baseUrl}${path}`, {
+        const response = await apiClient.delete<T>(this.absolutePathFor(path));
-            method: "DELETE",
+        BaseController.assertSuccessResponse(response);
-        });
+        return response.data;
-
-        if (!res.ok) {
-            const errorData = await res.json().catch(() => ({}));
-            throw new Error(errorData?.error || `Error ${res.status}: ${res.statusText}`);
-        }
-
-        return res.json();
     }
 
     protected async put<T>(path: string, body: unknown): Promise<T> {
-        const res = await fetch(`${this.baseUrl}${path}`, {
+        const response = await apiClient.put<T>(this.absolutePathFor(path), body);
-            method: "PUT",
+        BaseController.assertSuccessResponse(response);
-            headers: { "Content-Type": "application/json" },
+        return response.data;
-            body: JSON.stringify(body),
+    }
-        });
 
-        if (!res.ok) {
+    private absolutePathFor(path: string): string {
-            const errorData = await res.json().catch(() => ({}));
+        return "/" + this.basePath + path;
-            throw new Error(errorData?.error || `Error ${res.status}: ${res.statusText}`);
-        }
-
-        return res.json();
     }
 }
+
+type QueryParams = Record<string, string | number | boolean | undefined>;

frontend/src/controllers/controllers.ts

@@ -0,0 +1,18 @@
+import { ThemeController } from "@/controllers/themes.ts";
+import { LearningObjectController } from "@/controllers/learning-objects.ts";
+import { LearningPathController } from "@/controllers/learning-paths.ts";
+
+export function controllerGetter<T>(factory: new () => T): () => T {
+    let instance: T | undefined;
+
+    return (): T => {
+        if (!instance) {
+            instance = new factory();
+        }
+        return instance;
+    };
+}
+
+export const getThemeController = controllerGetter(ThemeController);
+export const getLearningObjectController = controllerGetter(LearningObjectController);
+export const getLearningPathController = controllerGetter(LearningPathController);

frontend/src/controllers/learning-objects.ts

@@ -0,0 +1,17 @@
+import { BaseController } from "@/controllers/base-controller.ts";
+import type { Language } from "@/data-objects/language.ts";
+import type { LearningObject } from "@/data-objects/learning-objects/learning-object.ts";
+
+export class LearningObjectController extends BaseController {
+    constructor() {
+        super("learningObject");
+    }
+
+    async getMetadata(hruid: string, language: Language, version: number): Promise<LearningObject> {
+        return this.get<LearningObject>(`/${hruid}`, { language, version });
+    }
+
+    async getHTML(hruid: string, language: Language, version: number): Promise<Document> {
+        return this.get<Document>(`/${hruid}/html`, { language, version }, "document");
+    }
+}

frontend/src/controllers/learning-paths.ts

@@ -0,0 +1,32 @@
+import { BaseController } from "@/controllers/base-controller.ts";
+import { LearningPath } from "@/data-objects/learning-paths/learning-path.ts";
+import type { Language } from "@/data-objects/language.ts";
+import { single } from "@/utils/response-assertions.ts";
+import type { LearningPathDTO } from "@/data-objects/learning-paths/learning-path-dto.ts";
+
+export class LearningPathController extends BaseController {
+    constructor() {
+        super("learningPath");
+    }
+    async search(query: string): Promise<LearningPath[]> {
+        const dtos = await this.get<LearningPathDTO[]>("/", { search: query });
+        return dtos.map((dto) => LearningPath.fromDTO(dto));
+    }
+    async getBy(
+        hruid: string,
+        language: Language,
+        options?: { forGroup?: string; forStudent?: string },
+    ): Promise<LearningPath> {
+        const dtos = await this.get<LearningPathDTO[]>("/", {
+            hruid,
+            language,
+            forGroup: options?.forGroup,
+            forStudent: options?.forStudent,
+        });
+        return LearningPath.fromDTO(single(dtos));
+    }
+    async getAllByTheme(theme: string): Promise<LearningPath[]> {
+        const dtos = await this.get<LearningPathDTO[]>("/", { theme });
+        return dtos.map((dto) => LearningPath.fromDTO(dto));
+    }
+}

frontend/src/data-objects/language.ts

@@ -0,0 +1,186 @@
+export enum Language {
+    Afar = "aa",
+    Abkhazian = "ab",
+    Afrikaans = "af",
+    Akan = "ak",
+    Albanian = "sq",
+    Amharic = "am",
+    Arabic = "ar",
+    Aragonese = "an",
+    Armenian = "hy",
+    Assamese = "as",
+    Avaric = "av",
+    Avestan = "ae",
+    Aymara = "ay",
+    Azerbaijani = "az",
+    Bashkir = "ba",
+    Bambara = "bm",
+    Basque = "eu",
+    Belarusian = "be",
+    Bengali = "bn",
+    Bihari = "bh",
+    Bislama = "bi",
+    Bosnian = "bs",
+    Breton = "br",
+    Bulgarian = "bg",
+    Burmese = "my",
+    Catalan = "ca",
+    Chamorro = "ch",
+    Chechen = "ce",
+    Chinese = "zh",
+    ChurchSlavic = "cu",
+    Chuvash = "cv",
+    Cornish = "kw",
+    Corsican = "co",
+    Cree = "cr",
+    Czech = "cs",
+    Danish = "da",
+    Divehi = "dv",
+    Dutch = "nl",
+    Dzongkha = "dz",
+    English = "en",
+    Esperanto = "eo",
+    Estonian = "et",
+    Ewe = "ee",
+    Faroese = "fo",
+    Fijian = "fj",
+    Finnish = "fi",
+    French = "fr",
+    Frisian = "fy",
+    Fulah = "ff",
+    Georgian = "ka",
+    German = "de",
+    Gaelic = "gd",
+    Irish = "ga",
+    Galician = "gl",
+    Manx = "gv",
+    Greek = "el",
+    Guarani = "gn",
+    Gujarati = "gu",
+    Haitian = "ht",
+    Hausa = "ha",
+    Hebrew = "he",
+    Herero = "hz",
+    Hindi = "hi",
+    HiriMotu = "ho",
+    Croatian = "hr",
+    Hungarian = "hu",
+    Igbo = "ig",
+    Icelandic = "is",
+    Ido = "io",
+    SichuanYi = "ii",
+    Inuktitut = "iu",
+    Interlingue = "ie",
+    Interlingua = "ia",
+    Indonesian = "id",
+    Inupiaq = "ik",
+    Italian = "it",
+    Javanese = "jv",
+    Japanese = "ja",
+    Kalaallisut = "kl",
+    Kannada = "kn",
+    Kashmiri = "ks",
+    Kanuri = "kr",
+    Kazakh = "kk",
+    Khmer = "km",
+    Kikuyu = "ki",
+    Kinyarwanda = "rw",
+    Kirghiz = "ky",
+    Komi = "kv",
+    Kongo = "kg",
+    Korean = "ko",
+    Kuanyama = "kj",
+    Kurdish = "ku",
+    Lao = "lo",
+    Latin = "la",
+    Latvian = "lv",
+    Limburgan = "li",
+    Lingala = "ln",
+    Lithuanian = "lt",
+    Luxembourgish = "lb",
+    LubaKatanga = "lu",
+    Ganda = "lg",
+    Macedonian = "mk",
+    Marshallese = "mh",
+    Malayalam = "ml",
+    Maori = "mi",
+    Marathi = "mr",
+    Malay = "ms",
+    Malagasy = "mg",
+    Maltese = "mt",
+    Mongolian = "mn",
+    Nauru = "na",
+    Navajo = "nv",
+    SouthNdebele = "nr",
+    NorthNdebele = "nd",
+    Ndonga = "ng",
+    Nepali = "ne",
+    NorwegianNynorsk = "nn",
+    NorwegianBokmal = "nb",
+    Norwegian = "no",
+    Chichewa = "ny",
+    Occitan = "oc",
+    Ojibwa = "oj",
+    Oriya = "or",
+    Oromo = "om",
+    Ossetian = "os",
+    Punjabi = "pa",
+    Persian = "fa",
+    Pali = "pi",
+    Polish = "pl",
+    Portuguese = "pt",
+    Pashto = "ps",
+    Quechua = "qu",
+    Romansh = "rm",
+    Romanian = "ro",
+    Rundi = "rn",
+    Russian = "ru",
+    Sango = "sg",
+    Sanskrit = "sa",
+    Sinhala = "si",
+    Slovak = "sk",
+    Slovenian = "sl",
+    NorthernSami = "se",
+    Samoan = "sm",
+    Shona = "sn",
+    Sindhi = "sd",
+    Somali = "so",
+    Sotho = "st",
+    Spanish = "es",
+    Sardinian = "sc",
+    Serbian = "sr",
+    Swati = "ss",
+    Sundanese = "su",
+    Swahili = "sw",
+    Swedish = "sv",
+    Tahitian = "ty",
+    Tamil = "ta",
+    Tatar = "tt",
+    Telugu = "te",
+    Tajik = "tg",
+    Tagalog = "tl",
+    Thai = "th",
+    Tibetan = "bo",
+    Tigrinya = "ti",
+    Tonga = "to",
+    Tswana = "tn",
+    Tsonga = "ts",
+    Turkmen = "tk",
+    Turkish = "tr",
+    Twi = "tw",
+    Uighur = "ug",
+    Ukrainian = "uk",
+    Urdu = "ur",
+    Uzbek = "uz",
+    Venda = "ve",
+    Vietnamese = "vi",
+    Volapuk = "vo",
+    Welsh = "cy",
+    Walloon = "wa",
+    Wolof = "wo",
+    Xhosa = "xh",
+    Yiddish = "yi",
+    Yoruba = "yo",
+    Zhuang = "za",
+    Zulu = "zu",
+}

frontend/src/data-objects/learning-objects/educational-goal.ts

@@ -0,0 +1,4 @@
+export interface EducationalGoal {
+    source: string;
+    id: string;
+}

frontend/src/data-objects/learning-objects/learning-object.ts

@@ -0,0 +1,25 @@
+import type { Language } from "@/data-objects/language.ts";
+import type { ReturnValue } from "@/data-objects/learning-objects/return-value.ts";
+import type { EducationalGoal } from "@/data-objects/learning-objects/educational-goal.ts";
+
+export interface LearningObject {
+    key: string;
+    _id: string;
+    uuid: string;
+    version: number;
+    title: string;
+    htmlUrl: string;
+    language: Language;
+    difficulty: number;
+    estimatedTime?: number;
+    available: boolean;
+    teacherExclusive: boolean;
+    educationalGoals: EducationalGoal[];
+    keywords: string[];
+    description: string;
+    targetAges: number[];
+    contentType: string;
+    contentLocation?: string;
+    skosConcepts?: string[];
+    returnValue?: ReturnValue;
+}

frontend/src/data-objects/learning-objects/return-value.ts

@@ -0,0 +1,4 @@
+export interface ReturnValue {
+    callback_url: string;
+    callback_schema: Record<string, unknown>;
+}

frontend/src/data-objects/learning-paths/learning-path-dto.ts

@@ -0,0 +1,17 @@
+import type { LearningPathNodeDTO } from "@/data-objects/learning-paths/learning-path.ts";
+
+export interface LearningPathDTO {
+    language: string;
+    hruid: string;
+    title: string;
+    description: string;
+    image?: string; // Image might be missing, so it's optional
+    num_nodes: number;
+    num_nodes_left: number;
+    nodes: LearningPathNodeDTO[];
+    keywords: string;
+    target_ages: number[];
+    min_age: number;
+    max_age: number;
+    __order: number;
+}

frontend/src/data-objects/learning-paths/learning-path-node.ts

@@ -0,0 +1,58 @@
+import type { Language } from "@/data-objects/language.ts";
+import type { LearningPathNodeDTO } from "@/data-objects/learning-paths/learning-path.ts";
+
+export class LearningPathNode {
+    public readonly learningobjectHruid: string;
+    public readonly version: number;
+    public readonly language: Language;
+    public readonly transitions: { next: LearningPathNode; default: boolean }[];
+    public readonly createdAt: Date;
+    public readonly updatedAt: Date;
+    public readonly done: boolean;
+
+    constructor(options: {
+        learningobjectHruid: string;
+        version: number;
+        language: Language;
+        transitions: { next: LearningPathNode; default: boolean }[];
+        createdAt: Date;
+        updatedAt: Date;
+        done?: boolean;
+    }) {
+        this.learningobjectHruid = options.learningobjectHruid;
+        this.version = options.version;
+        this.language = options.language;
+        this.transitions = options.transitions;
+        this.createdAt = options.createdAt;
+        this.updatedAt = options.updatedAt;
+        this.done = options.done || false;
+    }
+
+    static fromDTOAndOtherNodes(dto: LearningPathNodeDTO, otherNodes: LearningPathNodeDTO[]): LearningPathNode {
+        return new LearningPathNode({
+            learningobjectHruid: dto.learningobject_hruid,
+            version: dto.version,
+            language: dto.language,
+            transitions: dto.transitions
+                .map((transDto) => {
+                    const nextNodeDto = otherNodes.find(
+                        (it) =>
+                            it.learningobject_hruid === transDto.next.hruid &&
+                            it.language === transDto.next.language &&
+                            it.version === transDto.next.version,
+                    );
+                    if (nextNodeDto) {
+                        return {
+                            next: LearningPathNode.fromDTOAndOtherNodes(nextNodeDto, otherNodes),
+                            default: transDto.default,
+                        };
+                    }
+                    return undefined;
+                })
+                .filter((it) => it !== undefined),
+            createdAt: new Date(dto.created_at),
+            updatedAt: new Date(dto.updatedAt),
+            done: dto.done,
+        });
+    }
+}

frontend/src/data-objects/learning-paths/learning-path.ts

@@ -0,0 +1,97 @@
+import type { Language } from "@/data-objects/language.ts";
+import { LearningPathNode } from "@/data-objects/learning-paths/learning-path-node.ts";
+import type { LearningPathDTO } from "@/data-objects/learning-paths/learning-path-dto.ts";
+
+export interface LearningPathNodeDTO {
+    _id: string;
+    learningobject_hruid: string;
+    version: number;
+    language: Language;
+    start_node?: boolean;
+    transitions: LearningPathTransitionDTO[];
+    created_at: string;
+    updatedAt: string;
+    done?: boolean; // True if a submission exists for this node by the user for whom the learning path is customized.
+}
+
+export interface LearningPathTransitionDTO {
+    default: boolean;
+    _id: string;
+    next: {
+        _id: string;
+        hruid: string;
+        version: number;
+        language: string;
+    };
+}
+
+export class LearningPath {
+    public readonly language: string;
+    public readonly hruid: string;
+    public readonly title: string;
+    public readonly description: string;
+    public readonly amountOfNodes: number;
+    public readonly amountOfNodesLeft: number;
+    public readonly keywords: string[];
+    public readonly targetAges: { min: number; max: number };
+    public readonly startNode: LearningPathNode;
+    public readonly image?: string; // Image might be missing, so it's optional
+
+    constructor(options: {
+        language: string;
+        hruid: string;
+        title: string;
+        description: string;
+        amountOfNodes: number;
+        amountOfNodesLeft: number;
+        keywords: string[];
+        targetAges: { min: number; max: number };
+        startNode: LearningPathNode;
+        image?: string; // Image might be missing, so it's optional
+    }) {
+        this.language = options.language;
+        this.hruid = options.hruid;
+        this.title = options.title;
+        this.description = options.description;
+        this.amountOfNodes = options.amountOfNodes;
+        this.amountOfNodesLeft = options.amountOfNodesLeft;
+        this.keywords = options.keywords;
+        this.targetAges = options.targetAges;
+        this.startNode = options.startNode;
+        this.image = options.image;
+    }
+
+    public get nodesAsList(): LearningPathNode[] {
+        const list: LearningPathNode[] = [];
+        let currentNode = this.startNode;
+        while (currentNode) {
+            list.push(currentNode);
+            currentNode = currentNode.transitions.find((it) => it.default)?.next || currentNode.transitions[0]?.next;
+        }
+        return list;
+    }
+
+    static fromDTO(dto: LearningPathDTO): LearningPath {
+        return new LearningPath({
+            language: dto.language,
+            hruid: dto.hruid,
+            title: dto.title,
+            description: dto.description,
+            amountOfNodes: dto.num_nodes,
+            amountOfNodesLeft: dto.num_nodes_left,
+            keywords: dto.keywords.split(" "),
+            targetAges: { min: dto.min_age, max: dto.max_age },
+            startNode: LearningPathNode.fromDTOAndOtherNodes(LearningPath.getStartNode(dto), dto.nodes),
+            image: dto.image,
+        });
+    }
+
+    static getStartNode(dto: LearningPathDTO): LearningPathNodeDTO {
+        const startNodeDtos = dto.nodes.filter((it) => it.start_node === true);
+        if (startNodeDtos.length < 1) {
+            // The learning path has no starting node -> use the first node.
+            return dto.nodes[0];
+        } // The learning path has 1 or more starting nodes -> use the first start node.
+        return startNodeDtos[0];
+    }
+}

frontend/src/data-objects/theme.ts

@@ -0,0 +1,8 @@
+export interface Theme {
+    key: string;
+    title: string;
+    description: string;
+
+    // URL of the image
+    image: string;
+}

frontend/src/exception/http-error-response-exception.ts

@@ -0,0 +1,9 @@
+import type { AxiosResponse } from "axios";
+
+export class HttpErrorResponseException extends Error {
+    public statusCode: number;
+    constructor(public response: AxiosResponse<unknown, unknown>) {
+        super((response.data as { message: string })?.message || JSON.stringify(response.data));
+        this.statusCode = response.status;
+    }
+}

frontend/src/exception/invalid-response-exception.ts

@@ -0,0 +1,5 @@
+export class InvalidResponseException extends Error {
+    constructor(message: string) {
+        super(message);
+    }
+}

frontend/src/exception/not-found-exception.ts

@@ -0,0 +1,5 @@
+export class NotFoundException extends Error {
+    constructor(message: string) {
+        super(message);
+    }
+}

frontend/src/i18n/locale/de.json

@@ -39,5 +39,17 @@
         "high-school": "16-18 jahre alt",
         "older": "18 und älter"
     },
-    "read-more": "Mehr lesen"
+    "read-more": "Mehr lesen",
+    "error_title": "Fehler",
+    "previous": "Zurück",
+    "next": "Weiter",
+    "search": "Suchen...",
+    "yearsAge": "Jahre",
+    "enterSearchTerm": "Lernpfade suchen",
+    "enterSearchTermDescription": "Bitte geben Sie einen Suchbegriff ein.",
+    "noLearningPathsFound": "Nichts gefunden!",
+    "noLearningPathsFoundDescription": "Es gibt keine Lernpfade, die zu Ihrem Suchbegriff passen.",
+    "legendNotCompletedYet": "Noch nicht fertig",
+    "legendCompleted": "Fertig",
+    "legendTeacherExclusive": "Information für Lehrkräfte"
 }

frontend/src/i18n/locale/en.json

@@ -2,10 +2,22 @@
     "welcome": "Welcome",
     "student": "student",
     "teacher": "teacher",
-    "assignments": "Assignments",
+    "assignments": "assignments",
-    "classes": "Classes",
+    "classes": "classes",
-    "discussions": "Discussions",
+    "discussions": "discussions",
     "logout": "log out",
+    "error_title": "Error",
+    "previous": "Previous",
+    "next": "Next",
+    "search": "Search...",
+    "yearsAge": "years",
+    "enterSearchTerm": "Search learning paths",
+    "enterSearchTermDescription": "Please enter a search term.",
+    "noLearningPathsFound": "Nothing found!",
+    "noLearningPathsFoundDescription": "There are no learning paths matching your search term.",
+    "legendNotCompletedYet": "Not completed yet",
+    "legendCompleted": "Completed",
+    "legendTeacherExclusive": "Information for teachers",
     "cancel": "cancel",
     "logoutVerification": "Are you sure you want to log out?",
     "homeTitle": "Our strengths",

frontend/src/i18n/locale/fr.json

@@ -1,5 +1,17 @@
 {
     "welcome": "Bienvenue",
+    "error_title": "Erreur",
+    "previous": "Précédente",
+    "next": "Suivante",
+    "search": "Réchercher...",
+    "yearsAge": "ans",
+    "enterSearchTerm": "Rechercher des parcours d'apprentissage",
+    "enterSearchTermDescription": "Saisissez un terme de recherche pour commencer.",
+    "noLearningPathsFound": "Rien trouvé !",
+    "noLearningPathsFoundDescription": "Aucun parcours d'apprentissage ne correspond à votre recherche.",
+    "legendNotCompletedYet": "Pas encore achevé",
+    "legendCompleted": "Achevé",
+    "legendTeacherExclusive": "Informations pour les enseignants",
     "student": "élève",
     "teacher": "enseignant",
     "assignments": "Travails",

frontend/src/i18n/locale/nl.json

@@ -2,10 +2,22 @@
     "welcome": "Welkom",
     "student": "leerling",
     "teacher": "leerkracht",
-    "assignments": "Opdrachten",
+    "assignments": "opdrachten",
-    "classes": "Klassen",
+    "classes": "klassen",
-    "discussions": "Discussies",
+    "discussions": "discussies",
     "logout": "log uit",
+    "error_title": "Fout",
+    "previous": "Vorige",
+    "next": "Volgende",
+    "search": "Zoeken...",
+    "yearsAge": "jaar",
+    "enterSearchTerm": "Zoek naar leerpaden",
+    "enterSearchTermDescription": "Gelieve een zoekterm in te voeren.",
+    "noLearningPathsFound": "Niets gevonden!",
+    "noLearningPathsFoundDescription": "Er zijn geen leerpaden die overeenkomen met je zoekterm.",
+    "legendNotCompletedYet": "Nog niet afgewerkt",
+    "legendCompleted": "Afgewerkt",
+    "legendTeacherExclusive": "Informatie voor leerkrachten",
     "cancel": "annuleren",
     "logoutVerification": "Bent u zeker dat u wilt uitloggen?",
     "homeTitle": "Onze sterke punten",

frontend/src/main.ts

@@ -10,6 +10,7 @@ import i18n from "./i18n/i18n.ts";
 // Components
 import App from "./App.vue";
 import router from "./router";
+import { aliases, mdi } from "vuetify/iconsets/mdi";
 import { VueQueryPlugin, QueryClient } from "@tanstack/vue-query";
 
 const app = createApp(App);
@@ -24,6 +25,13 @@ document.head.appendChild(link);
 const vuetify = createVuetify({
     components,
     directives,
+    icons: {
+        defaultSet: "mdi",
+        aliases,
+        sets: {
+            mdi,
+        },
+    },
 });
 
 const queryClient = new QueryClient({

frontend/src/queries/learning-objects.ts

@@ -0,0 +1,57 @@
+import { type MaybeRefOrGetter, toValue } from "vue";
+import type { Language } from "@/data-objects/language.ts";
+import { useQuery, type UseQueryReturnType } from "@tanstack/vue-query";
+import { getLearningObjectController } from "@/controllers/controllers.ts";
+import type { LearningObject } from "@/data-objects/learning-objects/learning-object.ts";
+import type { LearningPath } from "@/data-objects/learning-paths/learning-path.ts";
+
+const LEARNING_OBJECT_KEY = "learningObject";
+const learningObjectController = getLearningObjectController();
+
+export function useLearningObjectMetadataQuery(
+    hruid: MaybeRefOrGetter<string>,
+    language: MaybeRefOrGetter<Language>,
+    version: MaybeRefOrGetter<number>,
+): UseQueryReturnType<LearningObject, Error> {
+    return useQuery({
+        queryKey: [LEARNING_OBJECT_KEY, "metadata", hruid, language, version],
+        queryFn: async () => {
+            const [hruidVal, languageVal, versionVal] = [toValue(hruid), toValue(language), toValue(version)];
+            return learningObjectController.getMetadata(hruidVal, languageVal, versionVal);
+        },
+        enabled: () => Boolean(toValue(hruid)) && Boolean(toValue(language)) && Boolean(toValue(version)),
+    });
+}
+
+export function useLearningObjectHTMLQuery(
+    hruid: MaybeRefOrGetter<string>,
+    language: MaybeRefOrGetter<Language>,
+    version: MaybeRefOrGetter<number>,
+): UseQueryReturnType<Document, Error> {
+    return useQuery({
+        queryKey: [LEARNING_OBJECT_KEY, "html", hruid, language, version],
+        queryFn: async () => {
+            const [hruidVal, languageVal, versionVal] = [toValue(hruid), toValue(language), toValue(version)];
+            return learningObjectController.getHTML(hruidVal, languageVal, versionVal);
+        },
+        enabled: () => Boolean(toValue(hruid)) && Boolean(toValue(language)) && Boolean(toValue(version)),
+    });
+}
+
+export function useLearningObjectListForPathQuery(
+    learningPath: MaybeRefOrGetter<LearningPath | undefined>,
+): UseQueryReturnType<LearningObject[], Error> {
+    return useQuery({
+        queryKey: [LEARNING_OBJECT_KEY, "onPath", learningPath],
+        queryFn: async () => {
+            const learningObjects: Promise<LearningObject>[] = [];
+            for (const node of toValue(learningPath)!.nodesAsList) {
+                learningObjects.push(
+                    learningObjectController.getMetadata(node.learningobjectHruid, node.language, node.version),
+                );
+            }
+            return Promise.all(learningObjects);
+        },
+        enabled: () => Boolean(toValue(learningPath)),
+    });
+}

frontend/src/queries/learning-paths.ts

@@ -0,0 +1,46 @@
+import { type MaybeRefOrGetter, toValue } from "vue";
+import type { Language } from "@/data-objects/language.ts";
+import { useQuery, type UseQueryReturnType } from "@tanstack/vue-query";
+import { getLearningPathController } from "@/controllers/controllers";
+import type { LearningPath } from "@/data-objects/learning-paths/learning-path.ts";
+
+const LEARNING_PATH_KEY = "learningPath";
+const learningPathController = getLearningPathController();
+
+export function useGetLearningPathQuery(
+    hruid: MaybeRefOrGetter<string>,
+    language: MaybeRefOrGetter<Language>,
+    options?: MaybeRefOrGetter<{ forGroup?: string; forStudent?: string }>,
+): UseQueryReturnType<LearningPath, Error> {
+    return useQuery({
+        queryKey: [LEARNING_PATH_KEY, "get", hruid, language, options],
+        queryFn: async () => {
+            const [hruidVal, languageVal, optionsVal] = [toValue(hruid), toValue(language), toValue(options)];
+            return learningPathController.getBy(hruidVal, languageVal, optionsVal);
+        },
+        enabled: () => Boolean(toValue(hruid)) && Boolean(toValue(language)),
+    });
+}
+
+export function useGetAllLearningPathsByThemeQuery(
+    theme: MaybeRefOrGetter<string>,
+): UseQueryReturnType<LearningPath[], Error> {
+    return useQuery({
+        queryKey: [LEARNING_PATH_KEY, "getAllByTheme", theme],
+        queryFn: async () => learningPathController.getAllByTheme(toValue(theme)),
+        enabled: () => Boolean(toValue(theme)),
+    });
+}
+
+export function useSearchLearningPathQuery(
+    query: MaybeRefOrGetter<string | undefined>,
+): UseQueryReturnType<LearningPath[], Error> {
+    return useQuery({
+        queryKey: [LEARNING_PATH_KEY, "search", query],
+        queryFn: async () => {
+            const queryVal = toValue(query)!;
+            return learningPathController.search(queryVal);
+        },
+        enabled: () => Boolean(toValue(query)),
+    });
+}

frontend/src/router/index.ts

@@ -11,8 +11,11 @@ import UserDiscussions from "@/views/discussions/UserDiscussions.vue";
 import UserClasses from "@/views/classes/UserClasses.vue";
 import UserAssignments from "@/views/classes/UserAssignments.vue";
 import authState from "@/services/auth/auth-service.ts";
+import LearningPathPage from "@/views/learning-paths/LearningPathPage.vue";
+import LearningPathSearchPage from "@/views/learning-paths/LearningPathSearchPage.vue";
 import UserHomePage from "@/views/homepage/UserHomePage.vue";
 import SingleTheme from "@/views/SingleTheme.vue";
+import LearningObjectView from "@/views/learning-paths/LearningObjectView.vue";
 
 const router = createRouter({
     history: createWebHistory(import.meta.env.BASE_URL),
@@ -63,9 +66,10 @@ const router = createRouter({
         },
 
         {
-            path: "/theme/:id",
+            path: "/theme/:theme",
             name: "Theme",
             component: SingleTheme,
+            props: true,
             meta: { requiresAuth: true },
         },
         {
@@ -104,6 +108,31 @@ const router = createRouter({
             component: SingleDiscussion,
             meta: { requiresAuth: true },
         },
+        {
+            path: "/learningPath",
+            children: [
+                {
+                    path: "search",
+                    name: "LearningPathSearchPage",
+                    component: LearningPathSearchPage,
+                    meta: { requiresAuth: true },
+                },
+                {
+                    path: ":hruid/:language/:learningObjectHruid",
+                    name: "LearningPath",
+                    component: LearningPathPage,
+                    props: true,
+                    meta: { requiresAuth: true },
+                },
+            ],
+        },
+        {
+            path: "/learningObject/:hruid/:language/:version/raw",
+            name: "LearningObjectView",
+            component: LearningObjectView,
+            props: true,
+            meta: { requiresAuth: true },
+        },
         {
             path: "/:catchAll(.*)",
             name: "NotFound",

frontend/src/services/auth/auth-config-loader.ts

@@ -1,4 +1,4 @@
-import apiClient from "@/services/api-client.ts";
+import apiClient from "@/services/api-client/api-client.ts";
 import type { FrontendAuthConfig } from "@/services/auth/auth.d.ts";
 import type { UserManagerSettings } from "oidc-client-ts";
 

frontend/src/services/auth/auth-service.ts

@@ -8,7 +8,7 @@ import { User, UserManager } from "oidc-client-ts";
 import { AUTH_CONFIG_ENDPOINT, loadAuthConfig } from "@/services/auth/auth-config-loader.ts";
 import authStorage from "./auth-storage.ts";
 import { loginRoute } from "@/config.ts";
-import apiClient from "@/services/api-client.ts";
+import apiClient from "@/services/api-client/api-client.ts";
 import router from "@/router";
 import type { AxiosError } from "axios";
 

frontend/src/utils/response-assertions.ts

@@ -0,0 +1,14 @@
+import { NotFoundException } from "@/exception/not-found-exception.ts";
+import { InvalidResponseException } from "@/exception/invalid-response-exception.ts";
+
+export function single<T>(list: T[]): T {
+    if (list.length === 1) {
+        return list[0];
+    } else if (list.length === 0) {
+        throw new NotFoundException("Expected list with exactly one element, but got an empty list.");
+    } else {
+        throw new InvalidResponseException(
+            `Expected list with exactly one element, but got one with ${list.length} elements.`,
+        );
+    }
+}

frontend/src/views/CallbackPage.vue

@@ -1,22 +1,25 @@
 <script setup lang="ts">
     import { useRouter } from "vue-router";
-    import { onMounted } from "vue";
+    import { onMounted, ref, type Ref } from "vue";
     import auth from "../services/auth/auth-service.ts";
 
     const router = useRouter();
 
+    const errorMessage: Ref<string | null> = ref(null);
+
     onMounted(async () => {
         try {
             await auth.handleLoginCallback();
             await router.replace("/user"); // Redirect to theme page
-        } catch (_error) {
+        } catch (error) {
-            // FIXME console.error("OIDC callback error:", error);
+            errorMessage.value = `OIDC callback error: ${error}`;
         }
     });
 </script>
 
 <template>
-    <p>Logging you in...</p>
+    <p v-if="!errorMessage">Logging you in...</p>
+    <p v-else>{{ errorMessage }}</p>
 </template>
 
 <style scoped></style>

frontend/src/views/SingleTheme.vue

@@ -1,7 +1,68 @@
-<script setup lang="ts"></script>
+<script setup lang="ts">
+    import type { LearningPath } from "@/data-objects/learning-paths/learning-path.ts";
+    import LearningPathsGrid from "@/components/LearningPathsGrid.vue";
+    import UsingQueryResult from "@/components/UsingQueryResult.vue";
+    import { useGetAllLearningPathsByThemeQuery } from "@/queries/learning-paths.ts";
+    import { computed, ref } from "vue";
+    import { useI18n } from "vue-i18n";
+    import { useThemeQuery } from "@/queries/themes.ts";
+
+    const props = defineProps<{ theme: string }>();
+
+    const { locale } = useI18n();
+    const language = computed(() => locale.value);
+
+    const themeQueryResult = useThemeQuery(language);
+
+    const currentThemeInfo = computed(() => themeQueryResult.data.value?.find((it) => it.key === props.theme));
+
+    const learningPathsForThemeQueryResult = useGetAllLearningPathsByThemeQuery(() => props.theme);
+
+    const { t } = useI18n();
+    const searchFilter = ref("");
+
+    function filterLearningPaths(learningPaths: LearningPath[]): LearningPath[] {
+        return learningPaths.filter(
+            (it) =>
+                it.title.toLowerCase().includes(searchFilter.value.toLowerCase()) ||
+                it.description.toLowerCase().includes(searchFilter.value.toLowerCase()),
+        );
+    }
+</script>
 
 <template>
-    <main></main>
+    <div class="container">
+        <using-query-result :query-result="themeQueryResult">
+            <h1>{{ currentThemeInfo!!.title }}</h1>
+            <p>{{ currentThemeInfo!!.description }}</p>
+            <div class="search-field-container">
+                <v-text-field
+                    class="search-field"
+                    :label="t('search')"
+                    append-inner-icon="mdi-magnify"
+                    v-model="searchFilter"
+                ></v-text-field>
+            </div>
+
+            <using-query-result
+                :query-result="learningPathsForThemeQueryResult"
+                v-slot="{ data }: { data: LearningPath[] }"
+            >
+                <learning-paths-grid :learning-paths="filterLearningPaths(data)"></learning-paths-grid>
+            </using-query-result>
+        </using-query-result>
+    </div>
 </template>
 
-<style scoped></style>
+<style scoped>
+    .search-field-container {
+        display: block;
+        margin: 20px;
+    }
+    .search-field {
+        max-width: 300px;
+    }
+    .container {
+        padding: 20px;
+    }
+</style>

frontend/src/views/learning-paths/LearningObjectView.vue

@@ -0,0 +1,51 @@
+<script setup lang="ts">
+    import { Language } from "@/data-objects/language.ts";
+    import type { UseQueryReturnType } from "@tanstack/vue-query";
+    import { useLearningObjectHTMLQuery } from "@/queries/learning-objects.ts";
+    import UsingQueryResult from "@/components/UsingQueryResult.vue";
+
+    const props = defineProps<{ hruid: string; language: Language; version: number }>();
+
+    const learningObjectHtmlQueryResult: UseQueryReturnType<Document, Error> = useLearningObjectHTMLQuery(
+        () => props.hruid,
+        () => props.language,
+        () => props.version,
+    );
+</script>
+
+<template>
+    <using-query-result
+        :query-result="learningObjectHtmlQueryResult as UseQueryReturnType<Document, Error>"
+        v-slot="learningPathHtml: { data: Document }"
+    >
+        <div
+            class="learning-object-container"
+            v-html="learningPathHtml.data.body.innerHTML"
+        ></div>
+    </using-query-result>
+</template>
+
+<style scoped>
+    .learning-object-container {
+        padding: 20px;
+    }
+    :deep(hr) {
+        margin-top: 10px;
+        margin-bottom: 10px;
+    }
+    :deep(li) {
+        margin-left: 30px;
+        margin-top: 5px;
+        margin-bottom: 5px;
+    }
+    :deep(img) {
+        max-width: 80%;
+    }
+    :deep(h2),
+    :deep(h3),
+    :deep(h4),
+    :deep(h5),
+    :deep(h6) {
+        margin-top: 10px;
+    }
+</style>

frontend/src/views/learning-paths/LearningPathPage.vue

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+<script setup lang="ts">
+    import { Language } from "@/data-objects/language.ts";
+    import type { LearningPath } from "@/data-objects/learning-paths/learning-path.ts";
+    import { computed, type ComputedRef, ref } from "vue";
+    import type { LearningObject } from "@/data-objects/learning-objects/learning-object.ts";
+    import { useRoute } from "vue-router";
+    import LearningObjectView from "@/views/learning-paths/LearningObjectView.vue";
+    import { useI18n } from "vue-i18n";
+    import LearningPathSearchField from "@/components/LearningPathSearchField.vue";
+    import { useGetLearningPathQuery } from "@/queries/learning-paths.ts";
+    import { useLearningObjectListForPathQuery } from "@/queries/learning-objects.ts";
+    import UsingQueryResult from "@/components/UsingQueryResult.vue";
+    import authService from "@/services/auth/auth-service.ts";
+    import { LearningPathNode } from "@/data-objects/learning-paths/learning-path-node.ts";
+
+    const route = useRoute();
+    const { t } = useI18n();
+
+    const props = defineProps<{ hruid: string; language: Language; learningObjectHruid?: string }>();
+
+    interface Personalization {
+        forStudent?: string;
+        forGroup?: string;
+    }
+
+    const personalization = computed(() => {
+        if (route.query.forStudent || route.query.forGroup) {
+            return {
+                forStudent: route.query.forStudent,
+                forGroup: route.query.forGroup,
+            } as Personalization;
+        }
+        return {
+            forStudent: authService.authState.user?.profile?.preferred_username,
+        } as Personalization;
+    });
+
+    const learningPathQueryResult = useGetLearningPathQuery(props.hruid, props.language, personalization);
+
+    const learningObjectListQueryResult = useLearningObjectListForPathQuery(learningPathQueryResult.data);
+
+    const nodesList: ComputedRef<LearningPathNode[] | null> = computed(
+        () => learningPathQueryResult.data.value?.nodesAsList ?? null,
+    );
+
+    const currentNode = computed(() => {
+        const currentHruid = props.learningObjectHruid;
+        return nodesList.value?.find((it) => it.learningobjectHruid === currentHruid);
+    });
+
+    const nextNode = computed(() => {
+        if (!currentNode.value || !nodesList.value) return undefined;
+        const currentIndex = nodesList.value?.indexOf(currentNode.value);
+        return currentIndex < nodesList.value?.length ? nodesList.value?.[currentIndex + 1] : undefined;
+    });
+
+    const previousNode = computed(() => {
+        if (!currentNode.value || !nodesList.value) return undefined;
+        const currentIndex = nodesList.value?.indexOf(currentNode.value);
+        return currentIndex < nodesList.value?.length ? nodesList.value?.[currentIndex - 1] : undefined;
+    });
+
+    const navigationDrawerShown = ref(true);
+
+    function isLearningObjectCompleted(learningObject: LearningObject): boolean {
+        if (learningObjectListQueryResult.isSuccess) {
+            return (
+                learningPathQueryResult.data.value?.nodesAsList?.find(
+                    (it) =>
+                        it.learningobjectHruid === learningObject.key &&
+                        it.version === learningObject.version &&
+                        it.language === learningObject.language,
+                )?.done ?? false
+            );
+        }
+        return false;
+    }
+
+    type NavItemState = "teacherExclusive" | "completed" | "notCompleted";
+
+    const ICONS: Record<NavItemState, string> = {
+        teacherExclusive: "mdi-information",
+        completed: "mdi-checkbox-marked-circle-outline",
+        notCompleted: "mdi-checkbox-blank-circle-outline",
+    };
+
+    const COLORS: Record<NavItemState, string | undefined> = {
+        teacherExclusive: "info",
+        completed: "success",
+        notCompleted: undefined,
+    };
+
+    function getNavItemState(learningObject: LearningObject): NavItemState {
+        if (learningObject.teacherExclusive) {
+            return "teacherExclusive";
+        } else if (isLearningObjectCompleted(learningObject)) {
+            return "completed";
+        }
+        return "notCompleted";
+    }
+</script>
+
+<template>
+    <using-query-result
+        :query-result="learningPathQueryResult"
+        v-slot="learningPath: { data: LearningPath }"
+    >
+        <v-navigation-drawer
+            v-model="navigationDrawerShown"
+            :width="350"
+        >
+            <v-list-item>
+                <template v-slot:title>
+                    <div class="learning-path-title">{{ learningPath.data.title }}</div>
+                </template>
+                <template v-slot:subtitle>
+                    <div>{{ learningPath.data.description }}</div>
+                </template>
+            </v-list-item>
+            <v-list-item>
+                <template v-slot:subtitle>
+                    <p>
+                        <v-icon
+                            :color="COLORS.notCompleted"
+                            :icon="ICONS.notCompleted"
+                        ></v-icon>
+                        {{ t("legendNotCompletedYet") }}
+                    </p>
+                    <p>
+                        <v-icon
+                            :color="COLORS.completed"
+                            :icon="ICONS.completed"
+                        ></v-icon>
+                        {{ t("legendCompleted") }}
+                    </p>
+                    <p>
+                        <v-icon
+                            :color="COLORS.teacherExclusive"
+                            :icon="ICONS.teacherExclusive"
+                        ></v-icon>
+                        {{ t("legendTeacherExclusive") }}
+                    </p>
+                </template>
+            </v-list-item>
+            <v-divider></v-divider>
+            <div v-if="props.learningObjectHruid">
+                <using-query-result
+                    :query-result="learningObjectListQueryResult"
+                    v-slot="learningObjects: { data: LearningObject[] }"
+                >
+                    <template v-for="node in learningObjects.data">
+                        <v-list-item
+                            link
+                            :to="{ path: node.key, query: route.query }"
+                            :title="node.title"
+                            :active="node.key === props.learningObjectHruid"
+                            :key="node.key"
+                            v-if="!node.teacherExclusive || authService.authState.activeRole === 'teacher'"
+                        >
+                            <template v-slot:prepend>
+                                <v-icon
+                                    :color="COLORS[getNavItemState(node)]"
+                                    :icon="ICONS[getNavItemState(node)]"
+                                ></v-icon>
+                            </template>
+                            <template v-slot:append> {{ node.estimatedTime }}' </template>
+                        </v-list-item>
+                    </template>
+                </using-query-result>
+            </div>
+        </v-navigation-drawer>
+        <div class="control-bar-above-content">
+            <v-btn
+                :icon="navigationDrawerShown ? 'mdi-menu-open' : 'mdi-menu'"
+                class="navigation-drawer-toggle-button"
+                variant="plain"
+                @click="navigationDrawerShown = !navigationDrawerShown"
+            ></v-btn>
+            <div class="search-field-container">
+                <learning-path-search-field></learning-path-search-field>
+            </div>
+        </div>
+        <learning-object-view
+            :hruid="currentNode.learningobjectHruid"
+            :language="currentNode.language"
+            :version="currentNode.version"
+            v-if="currentNode"
+        ></learning-object-view>
+        <div class="navigation-buttons-container">
+            <v-btn
+                prepend-icon="mdi-chevron-left"
+                variant="text"
+                :disabled="!previousNode"
+                :to="previousNode ? { path: previousNode.learningobjectHruid, query: route.query } : undefined"
+            >
+                {{ t("previous") }}
+            </v-btn>
+            <v-btn
+                append-icon="mdi-chevron-right"
+                variant="text"
+                :disabled="!nextNode"
+                :to="nextNode ? { path: nextNode.learningobjectHruid, query: route.query } : undefined"
+            >
+                {{ t("next") }}
+            </v-btn>
+        </div>
+    </using-query-result>
+</template>
+
+<style scoped>
+    .learning-path-title {
+        white-space: normal;
+    }
+    .search-field-container {
+        min-width: 250px;
+    }
+    .control-bar-above-content {
+        margin-left: 5px;
+        margin-right: 5px;
+        margin-bottom: -30px;
+        display: flex;
+        justify-content: space-between;
+    }
+    .navigation-buttons-container {
+        padding: 20px;
+        display: flex;
+        justify-content: space-between;
+    }
+</style>

frontend/src/views/learning-paths/LearningPathSearchPage.vue

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+<script setup lang="ts">
+    import type { LearningPath } from "@/data-objects/learning-paths/learning-path.ts";
+    import { useRoute } from "vue-router";
+    import { computed } from "vue";
+    import { useI18n } from "vue-i18n";
+    import LearningPathSearchField from "@/components/LearningPathSearchField.vue";
+    import { useSearchLearningPathQuery } from "@/queries/learning-paths.ts";
+    import UsingQueryResult from "@/components/UsingQueryResult.vue";
+    import LearningPathsGrid from "@/components/LearningPathsGrid.vue";
+
+    const route = useRoute();
+    const { t } = useI18n();
+
+    const query = computed(() => route.query.query as string | undefined);
+
+    const searchQueryResults = useSearchLearningPathQuery(query);
+</script>
+
+<template>
+    <div class="search-field-container">
+        <learning-path-search-field class="search-field"></learning-path-search-field>
+    </div>
+
+    <using-query-result
+        :query-result="searchQueryResults"
+        v-slot="{ data }: { data: LearningPath[] }"
+    >
+        <learning-paths-grid :learning-paths="data"></learning-paths-grid>
+    </using-query-result>
+    <div content="empty-state-container">
+        <v-empty-state
+            v-if="!query"
+            icon="mdi-magnify"
+            :title="t('enterSearchTerm')"
+            :text="t('enterSearchTermDescription')"
+        ></v-empty-state>
+    </div>
+</template>
+
+<style scoped>
+    .search-field-container {
+        display: block;
+        margin: 20px;
+    }
+    .search-field {
+        max-width: 300px;
+    }
+</style>