1 files changed, 140 insertions, 0 deletions
diff --git a/llama.cpp/tools/server/webui/src/lib/stores/server.svelte.ts b/llama.cpp/tools/server/webui/src/lib/stores/server.svelte.ts
new file mode 100644
index 0000000..facfd33
--- /dev/null
+++ b/llama.cpp/tools/server/webui/src/lib/stores/server.svelte.ts
@@ -0,0 +1,140 @@
+import { PropsService } from '$lib/services/props';
+import { ServerRole } from '$lib/enums';
+
+/**
+ * serverStore - Server connection state, configuration, and role detection
+ *
+ * This store manages the server connection state and properties fetched from `/props`.
+ * It provides reactive state for server configuration and role detection.
+ *
+ * **Architecture & Relationships:**
+ * - **PropsService**: Stateless service for fetching `/props` data
+ * - **serverStore** (this class): Reactive store for server state
+ * - **modelsStore**: Independent store for model management (uses PropsService directly)
+ *
+ * **Key Features:**
+ * - **Server State**: Connection status, loading, error handling
+ * - **Role Detection**: MODEL (single model) vs ROUTER (multi-model)
+ * - **Default Params**: Server-wide generation defaults
+ */
+class ServerStore {
+	// ─────────────────────────────────────────────────────────────────────────────
+	// State
+	// ─────────────────────────────────────────────────────────────────────────────
+
+	props = $state<ApiLlamaCppServerProps | null>(null);
+	loading = $state(false);
+	error = $state<string | null>(null);
+	role = $state<ServerRole | null>(null);
+	private fetchPromise: Promise<void> | null = null;
+
+	// ─────────────────────────────────────────────────────────────────────────────
+	// Getters
+	// ─────────────────────────────────────────────────────────────────────────────
+
+	get defaultParams(): ApiLlamaCppServerProps['default_generation_settings']['params'] | null {
+		return this.props?.default_generation_settings?.params || null;
+	}
+
+	get contextSize(): number | null {
+		return this.props?.default_generation_settings?.n_ctx ?? null;
+	}
+
+	get webuiSettings(): Record<string, string | number | boolean> | undefined {
+		return this.props?.webui_settings;
+	}
+
+	get isRouterMode(): boolean {
+		return this.role === ServerRole.ROUTER;
+	}
+
+	get isModelMode(): boolean {
+		return this.role === ServerRole.MODEL;
+	}
+
+	// ─────────────────────────────────────────────────────────────────────────────
+	// Data Handling
+	// ─────────────────────────────────────────────────────────────────────────────
+
+	async fetch(): Promise<void> {
+		if (this.fetchPromise) return this.fetchPromise;
+
+		this.loading = true;
+		this.error = null;
+
+		const fetchPromise = (async () => {
+			try {
+				const props = await PropsService.fetch();
+				this.props = props;
+				this.error = null;
+				this.detectRole(props);
+			} catch (error) {
+				this.error = this.getErrorMessage(error);
+				console.error('Error fetching server properties:', error);
+			} finally {
+				this.loading = false;
+				this.fetchPromise = null;
+			}
+		})();
+
+		this.fetchPromise = fetchPromise;
+		await fetchPromise;
+	}
+
+	private getErrorMessage(error: unknown): string {
+		if (error instanceof Error) {
+			const message = error.message || '';
+
+			if (error.name === 'TypeError' && message.includes('fetch')) {
+				return 'Server is not running or unreachable';
+			} else if (message.includes('ECONNREFUSED')) {
+				return 'Connection refused - server may be offline';
+			} else if (message.includes('ENOTFOUND')) {
+				return 'Server not found - check server address';
+			} else if (message.includes('ETIMEDOUT')) {
+				return 'Request timed out';
+			} else if (message.includes('503')) {
+				return 'Server temporarily unavailable';
+			} else if (message.includes('500')) {
+				return 'Server error - check server logs';
+			} else if (message.includes('404')) {
+				return 'Server endpoint not found';
+			} else if (message.includes('403') || message.includes('401')) {
+				return 'Access denied';
+			}
+		}
+
+		return 'Failed to connect to server';
+	}
+
+	clear(): void {
+		this.props = null;
+		this.error = null;
+		this.loading = false;
+		this.role = null;
+		this.fetchPromise = null;
+	}
+
+	// ─────────────────────────────────────────────────────────────────────────────
+	// Utilities
+	// ─────────────────────────────────────────────────────────────────────────────
+
+	private detectRole(props: ApiLlamaCppServerProps): void {
+		const newRole = props?.role === ServerRole.ROUTER ? ServerRole.ROUTER : ServerRole.MODEL;
+		if (this.role !== newRole) {
+			this.role = newRole;
+			console.info(`Server running in ${newRole === ServerRole.ROUTER ? 'ROUTER' : 'MODEL'} mode`);
+		}
+	}
+}
+
+export const serverStore = new ServerStore();
+
+export const serverProps = () => serverStore.props;
+export const serverLoading = () => serverStore.loading;
+export const serverError = () => serverStore.error;
+export const serverRole = () => serverStore.role;
+export const defaultParams = () => serverStore.defaultParams;
+export const contextSize = () => serverStore.contextSize;
+export const isRouterMode = () => serverStore.isRouterMode;
+export const isModelMode = () => serverStore.isModelMode;