feat: theming

Signed-off-by: Sebastian Krupinski <krupinski01@gmail.com>

core/src/stores/tenantStore.ts

@@ -1,4 +1,6 @@
 import { defineStore } from 'pinia';
+import { ref } from 'vue';
+import { fetchWrapper } from '@KTXC/utils/helpers/fetch-wrapper';
 
 export interface TenantState {
   id: string | null;
@@ -6,22 +8,117 @@ export interface TenantState {
   label: string | null;
 }
 
-export const useTenantStore = defineStore('tenantStore', {
-  state: () => ({
-    tenant: null as TenantState | null,
-  }),
-  actions: {
-    init(tenant: Partial<TenantState> | null) {
-      this.tenant = tenant
-        ? {
-            id: tenant.id ?? null,
-            domain: tenant.domain ?? null,
-            label: tenant.label ?? null,
-          }
-        : null;
-    },
-    reset() {
-      this.tenant = null;
-    },
-  },
+export interface TenantData extends TenantState {
+  settings?: Record<string, unknown>;
+}
+
+// Flush pending settings writes before the page unloads
+if (typeof window !== 'undefined') {
+  window.addEventListener('beforeunload', () => {
+    useTenantStore().flushSettings();
+  });
+}
+
+export const useTenantStore = defineStore('tenantStore', () => {
+  // =========================================================================
+  // State
+  // =========================================================================
+
+  const tenant = ref<TenantState | null>(null);
+  const settings = ref<Record<string, unknown>>({});
+
+  // Pending batch for debounced writes
+  let _pendingSettings: Record<string, unknown> = {};
+  let _debounceTimer: ReturnType<typeof setTimeout> | null = null;
+
+  // =========================================================================
+  // Getters
+  // =========================================================================
+
+  function getSetting(key: string): unknown {
+    return settings.value[key] ?? null;
+  }
+
+  // =========================================================================
+  // Settings actions
+  // =========================================================================
+
+  function setSetting(key: string, value: unknown): void {
+    settings.value[key] = value;
+
+    // Batch writes with a 500 ms debounce — same pattern as userService
+    _pendingSettings[key] = value;
+
+    if (_debounceTimer !== null) {
+      clearTimeout(_debounceTimer);
+    }
+
+    _debounceTimer = setTimeout(() => {
+      _flush();
+    }, 500);
+  }
+
+  async function _flush(): Promise<void> {
+    if (Object.keys(_pendingSettings).length === 0) return;
+
+    const payload = { ..._pendingSettings };
+    _pendingSettings = {};
+    _debounceTimer = null;
+
+    try {
+      await fetchWrapper.patch('/tenant/settings', { data: payload });
+    } catch (error) {
+      console.error('Failed to save tenant settings:', error);
+    }
+  }
+
+  /** Force-flush any pending settings writes (called on beforeunload). */
+  async function flushSettings(): Promise<void> {
+    if (_debounceTimer !== null) {
+      clearTimeout(_debounceTimer);
+      _debounceTimer = null;
+    }
+    await _flush();
+  }
+
+  // =========================================================================
+  // Initialise from /init endpoint
+  // =========================================================================
+
+  function init(tenantData: Partial<TenantData> | null): void {
+    tenant.value = tenantData
+      ? {
+          id: tenantData.id ?? null,
+          domain: tenantData.domain ?? null,
+          label: tenantData.label ?? null,
+        }
+      : null;
+
+    settings.value = (tenantData?.settings as Record<string, unknown>) ?? {};
+  }
+
+  function reset(): void {
+    tenant.value = null;
+    settings.value = {};
+    _pendingSettings = {};
+    if (_debounceTimer !== null) {
+      clearTimeout(_debounceTimer);
+      _debounceTimer = null;
+    }
+  }
+
+  return {
+    // State
+    tenant,
+    settings,
+
+    // Getters
+    getSetting,
+
+    // Actions
+    setSetting,
+    flushSettings,
+    init,
+    reset,
+  };
 });