From b333b06772c89d96aacb5490d6a219fba7c09cc6 Mon Sep 17 00:00:00 2001
From: Mitja Felicijan <mitja.felicijan@gmail.com>
Date: Thu, 12 Feb 2026 20:57:17 +0100
Subject: Engage!

---
 .../server/webui/src/routes/chat/[id]/+page.svelte | 176 +++++++++++++++++++++
 .../server/webui/src/routes/chat/[id]/+page.ts     |   6 +
 2 files changed, 182 insertions(+)
 create mode 100644 llama.cpp/tools/server/webui/src/routes/chat/[id]/+page.svelte
 create mode 100644 llama.cpp/tools/server/webui/src/routes/chat/[id]/+page.ts

(limited to 'llama.cpp/tools/server/webui/src/routes/chat/[id]')

diff --git a/llama.cpp/tools/server/webui/src/routes/chat/[id]/+page.svelte b/llama.cpp/tools/server/webui/src/routes/chat/[id]/+page.svelte
new file mode 100644
index 0000000..b897ef5
--- /dev/null
+++ b/llama.cpp/tools/server/webui/src/routes/chat/[id]/+page.svelte
@@ -0,0 +1,176 @@
+<script lang="ts">
+	import { goto, replaceState } from '$app/navigation';
+	import { page } from '$app/state';
+	import { afterNavigate } from '$app/navigation';
+	import { ChatScreen, DialogModelNotAvailable } from '$lib/components/app';
+	import { chatStore, isLoading } from '$lib/stores/chat.svelte';
+	import {
+		conversationsStore,
+		activeConversation,
+		activeMessages
+	} from '$lib/stores/conversations.svelte';
+	import { modelsStore, modelOptions, selectedModelId } from '$lib/stores/models.svelte';
+
+	let chatId = $derived(page.params.id);
+	let currentChatId: string | undefined = undefined;
+
+	// URL parameters for prompt and model selection
+	let qParam = $derived(page.url.searchParams.get('q'));
+	let modelParam = $derived(page.url.searchParams.get('model'));
+
+	// Dialog state for model not available error
+	let showModelNotAvailable = $state(false);
+	let requestedModelName = $state('');
+	let availableModelNames = $derived(modelOptions().map((m) => m.model));
+
+	// Track if URL params have been processed for this chat
+	let urlParamsProcessed = $state(false);
+
+	/**
+	 * Clear URL params after message is sent to prevent re-sending on refresh
+	 */
+	function clearUrlParams() {
+		const url = new URL(page.url);
+		url.searchParams.delete('q');
+		url.searchParams.delete('model');
+		replaceState(url.toString(), {});
+	}
+
+	async function handleUrlParams() {
+		// Ensure models are loaded first
+		await modelsStore.fetch();
+
+		// Handle model parameter - select model if provided
+		if (modelParam) {
+			const model = modelsStore.findModelByName(modelParam);
+			if (model) {
+				try {
+					await modelsStore.selectModelById(model.id);
+				} catch (error) {
+					console.error('Failed to select model:', error);
+					requestedModelName = modelParam;
+					showModelNotAvailable = true;
+					return;
+				}
+			} else {
+				// Model not found - show error dialog
+				requestedModelName = modelParam;
+				showModelNotAvailable = true;
+				return;
+			}
+		}
+
+		// Handle ?q= parameter - send message in current conversation
+		if (qParam !== null) {
+			await chatStore.sendMessage(qParam);
+			// Clear URL params after message is sent
+			clearUrlParams();
+		} else if (modelParam) {
+			// Clear params even if no message was sent (just model selection)
+			clearUrlParams();
+		}
+
+		urlParamsProcessed = true;
+	}
+
+	async function selectModelFromLastAssistantResponse() {
+		const messages = activeMessages();
+		if (messages.length === 0) return;
+
+		let lastMessageWithModel: DatabaseMessage | undefined;
+
+		for (let i = messages.length - 1; i >= 0; i--) {
+			if (messages[i].model) {
+				lastMessageWithModel = messages[i];
+				break;
+			}
+		}
+
+		if (!lastMessageWithModel) return;
+
+		const currentModelId = selectedModelId();
+		const currentModelName = modelOptions().find((m) => m.id === currentModelId)?.model;
+
+		if (currentModelName === lastMessageWithModel.model) {
+			return;
+		}
+
+		const matchingModel = modelOptions().find(
+			(option) => option.model === lastMessageWithModel.model
+		);
+
+		if (matchingModel) {
+			try {
+				await modelsStore.selectModelById(matchingModel.id);
+				console.log(`Automatically loaded model: ${lastMessageWithModel.model} from last message`);
+			} catch (error) {
+				console.warn('Failed to automatically select model from last message:', error);
+			}
+		}
+	}
+
+	afterNavigate(() => {
+		setTimeout(() => {
+			selectModelFromLastAssistantResponse();
+		}, 100);
+	});
+
+	$effect(() => {
+		if (chatId && chatId !== currentChatId) {
+			currentChatId = chatId;
+			urlParamsProcessed = false; // Reset for new chat
+
+			// Skip loading if this conversation is already active (e.g., just created)
+			if (activeConversation()?.id === chatId) {
+				// Still handle URL params even if conversation is active
+				if ((qParam !== null || modelParam !== null) && !urlParamsProcessed) {
+					handleUrlParams();
+				}
+				return;
+			}
+
+			(async () => {
+				const success = await conversationsStore.loadConversation(chatId);
+				if (success) {
+					chatStore.syncLoadingStateForChat(chatId);
+
+					// Handle URL params after conversation is loaded
+					if ((qParam !== null || modelParam !== null) && !urlParamsProcessed) {
+						await handleUrlParams();
+					}
+				} else {
+					await goto('#/');
+				}
+			})();
+		}
+	});
+
+	$effect(() => {
+		if (typeof window !== 'undefined') {
+			const handleBeforeUnload = () => {
+				if (isLoading()) {
+					console.log('Page unload detected while streaming - aborting stream');
+					chatStore.stopGeneration();
+				}
+			};
+
+			window.addEventListener('beforeunload', handleBeforeUnload);
+
+			return () => {
+				window.removeEventListener('beforeunload', handleBeforeUnload);
+			};
+		}
+	});
+</script>
+
+<svelte:head>
+	<title>{activeConversation()?.name || 'Chat'} - llama.cpp</title>
+</svelte:head>
+
+<ChatScreen />
+
+<DialogModelNotAvailable
+	bind:open={showModelNotAvailable}
+	modelName={requestedModelName}
+	availableModels={availableModelNames}
+/>
diff --git a/llama.cpp/tools/server/webui/src/routes/chat/[id]/+page.ts b/llama.cpp/tools/server/webui/src/routes/chat/[id]/+page.ts
new file mode 100644
index 0000000..7905af6
--- /dev/null
+++ b/llama.cpp/tools/server/webui/src/routes/chat/[id]/+page.ts
@@ -0,0 +1,6 @@
+import type { PageLoad } from './$types';
+import { validateApiKey } from '$lib/utils';
+
+export const load: PageLoad = async ({ fetch }) => {
+	await validateApiKey(fetch);
+};
-- 
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