feat(color-scheme): add color scheme settings

Added an appearance settings section containing a color scheme setting
and translations for that.

src/App.vue

@@ -26,7 +26,7 @@ import { useRoute } from 'vue-router';
 const route = useRoute();
 
 const { getColorScheme, updateColorScheme } = useColorScheme();
-const colorScheme = ref(getColorScheme());
+const colorScheme = ref(null);
 provide('colorScheme', colorScheme);
 watch(colorScheme, (newValue) => {
     updateColorScheme(newValue);
@@ -46,6 +46,7 @@ watch(colorScheme, (newValue) => {
         document.body.classList.remove('color-scheme-auto');
     }
 });
+colorScheme.value = getColorScheme();
 
 watchEffect(() => updatePageTitle(route));
 </script>

src/features/settings/composables/__tests__/useSettings.test.js

@@ -0,0 +1,94 @@
+/*
+Copyright 2026 Seekra
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { useSettingsConfigCacheStore } from '../../stores/settingsConfigCacheStore';
+import { useSettingsStore } from '../../stores/settingsStore';
+import { useSettings } from '../useSettings';
+import { createTestingPinia } from '@pinia/testing';
+import { setActivePinia } from 'pinia';
+import { beforeEach, describe, expect, test, vi } from 'vitest';
+
+const settingDefaultValue = 42;
+const settingPath = ['test', 'number'];
+
+describe('useSettings', () => {
+    describe('getSetting', () => {
+        test('returns stored value', () => {
+            const { getSetting } = useSettings();
+            const settings = useSettingsStore();
+
+            const key = 'setting';
+            const value = 42;
+
+            settings.set(key, value);
+
+            expect(getSetting(key)).toBe(value);
+        });
+
+        test('returns default value', () => {
+            const { getSetting } = useSettings();
+            expect(getSetting(settingPath)).toBe(settingDefaultValue);
+        });
+
+        test('returns stored value instead of default value', () => {
+            const { getSetting } = useSettings();
+            const settings = useSettingsStore();
+
+            const value = 43;
+
+            expect(getSetting(settingPath)).toBe(settingDefaultValue);
+
+            settings.set(settingPath, value);
+            expect(getSetting(settingPath)).toBe(value);
+        });
+
+        test('returns undefined if there is no value', () => {
+            const { getSetting } = useSettings();
+            expect(getSetting(['test', 'bool'])).toBeUndefined();
+        });
+    });
+});
+
+beforeEach(() => {
+    setActivePinia(
+        createTestingPinia({
+            createSpy: vi.fn,
+            stubActions: false
+        })
+    );
+    const settingsConfigCache = useSettingsConfigCacheStore();
+    settingsConfigCache.set({
+        contents: [
+            {
+                name: 'test',
+                i18n: '',
+                content: [
+                    {
+                        type: 'number',
+                        i18n: '',
+                        name: 'number',
+                        default: settingDefaultValue
+                    },
+                    {
+                        type: 'bool',
+                        i18n: '',
+                        name: 'bool'
+                    }
+                ]
+            }
+        ]
+    });
+});

src/features/settings/composables/useSettings.js

@@ -0,0 +1,54 @@
+/*
+Copyright 2026 Seekra
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { useSettingsConfigCacheStore } from '../stores/settingsConfigCacheStore';
+import { useSettingsStore } from '../stores/settingsStore';
+import { getSettingRecursively } from '../utils/getSetting';
+import { loadSettingsConfig } from '../utils/settingsParser';
+
+/**
+ * Provides access to the stored settings.
+ */
+export const useSettings = function useSettings () {
+    /**
+     * Returns the value of a specific setting.
+     * @param {string[]} key - The settings key.
+     * @return The value of the setting.
+     */
+    const getSetting = function getSetting (key) {
+        const settingsStore = useSettingsStore();
+
+        const settings = useSettingsConfigCacheStore().get();
+        return (
+            settingsStore.get(key) ??
+            getSettingRecursively(
+                key, settings.contents ?? []
+            )?.default
+        );
+    };
+
+    /**
+     * Sets the value of a specific setting.
+     * @param {string[]} key - The setting key.
+     * @param value - The new value for the setting.
+     */
+    const setSetting = function setSetting (key, value) {
+        const settingsStore = useSettingsStore();
+        settingsStore.set(key.join('.'), value);
+    };
+
+    return { getSetting, setSetting };
+};

src/features/settings/settings.json

@@ -1,3 +1,30 @@
 {
-    "contents": []
-}
+    "contents": [
+        {
+            "name": "appearance",
+            "i18n": "settings.settings.appearance.title",
+            "content": [
+                {
+                    "name": "colorScheme",
+                    "type": "selection",
+                    "i18n": "settings.settings.appearance.contents.colorScheme.title",
+                    "default": "auto",
+                    "options": [
+                        {
+                            "name": "auto",
+                            "i18n": "settings.settings.appearance.contents.colorScheme.options.auto"
+                        },
+                        {
+                            "name": "light",
+                            "i18n": "settings.settings.appearance.contents.colorScheme.options.light"
+                        },
+                        {
+                            "name": "dark",
+                            "i18n": "settings.settings.appearance.contents.colorScheme.options.dark"
+                        }
+                    ]
+                }
+            ]
+        }
+    ]
+}

src/features/settings/stores/settingsConfigCacheStore.js

@@ -0,0 +1,31 @@
+/*
+Copyright 2026 Seekra
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { defineStore } from 'pinia';
+
+export const useSettingsConfigCacheStore = defineStore('settingsConfigCache', () => {
+    let settingsConfig = undefined;
+
+    const set = function set (value) {
+        settingsConfig = value;
+    };
+
+    const get = function get () {
+        return settingsConfig;
+    };
+
+    return { set, get };
+});

src/features/settings/utils/settingsParser.js

@@ -14,6 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
+import { useSettingsConfigCacheStore } from '../stores/settingsConfigCacheStore';
 import { validateSettingsConfig } from './settingsValidator.js';
 
 /**
@@ -21,10 +22,12 @@ import { validateSettingsConfig } from './settingsValidator.js';
  * @returns {Promise<import('../types/settingsConfig').SettingsConfig>}
  */
 export async function loadSettingsConfig() {
+    const settingsConfigCache = useSettingsConfigCacheStore();
     let raw;
 
     try {
         raw = (await import('../settings.json')).default;
+        settingsConfigCache.set(raw);
     } catch (e) {
         throw new Error(`[settings] Failed to load settings.json: ${e.message}`);
     }

src/locales/de.json

@@ -60,6 +60,21 @@
             "option": {
                 "ariaLabel": "Wählt die Option {option} aus"
             }
+        },
+        "settings": {
+            "appearance": {
+                "title": "Erscheinungsbild",
+                "contents": {
+                    "colorScheme": {
+                        "title": "Farbschema",
+                        "options": {
+                            "auto": "An Systemfarbschema anpassen",
+                            "light": "Hell",
+                            "dark": "Dunkel"
+                        }
+                    }
+                }
+            }
         }
     }
 }

src/locales/en.json

@@ -60,6 +60,21 @@
             "option": {
                 "ariaLabel": "Selects option {option}"
             }
+        },
+        "settings": {
+            "appearance": {
+                "title": "Appearance",
+                "contents": {
+                    "colorScheme": {
+                        "title": "Color Scheme",
+                        "options": {
+                            "auto": "Adapt to system color scheme",
+                            "light": "Light",
+                            "dark": "Dark"
+                        }
+                    }
+                }
+            }
         }
     }
 }