test: Adds ChatMessage component stories for different thinking blocks

Author: allozaur

tools/server/webui/src/stories/ChatMessage.stories.svelte

@@ -59,6 +59,60 @@
 		thinking: '',
 		children: []
 	});
+
+	// Message with <think> format thinking content
+	const thinkTagMessage: DatabaseMessage = {
+		id: '6',
+		convId: 'conv-1',
+		type: 'message',
+		timestamp: Date.now() - 1000 * 60 * 2,
+		role: 'assistant',
+		content:
+			"<think>\nLet me analyze this step by step:\n\n1. The user is asking about thinking formats\n2. I need to demonstrate the &lt;think&gt; tag format\n3. This content should be displayed in the thinking section\n4. The main response should be separate\n\nThis is a good example of reasoning content.\n</think>\n\nHere's my response after thinking through the problem. The thinking content above should be displayed separately from this main response content.",
+		parent: '1',
+		thinking: '',
+		children: []
+	};
+
+	// Message with [THINK] format thinking content
+	const thinkBracketMessage: DatabaseMessage = {
+		id: '7',
+		convId: 'conv-1',
+		type: 'message',
+		timestamp: Date.now() - 1000 * 60 * 1,
+		role: 'assistant',
+		content:
+			'[THINK]\nThis is the DeepSeek-style thinking format:\n\n- Using square brackets instead of angle brackets\n- Should work identically to the &lt;think&gt; format\n- Content parsing should extract this reasoning\n- Display should be the same as &lt;think&gt; format\n\nBoth formats should be supported seamlessly.\n[/THINK]\n\nThis is the main response content that comes after the [THINK] block. The reasoning above should be parsed and displayed in the thinking section.',
+		parent: '1',
+		thinking: '',
+		children: []
+	};
+
+	// Streaming message for <think> format
+	let streamingThinkMessage = $state({
+		id: '8',
+		convId: 'conv-1',
+		type: 'message',
+		timestamp: 0, // No timestamp = streaming
+		role: 'assistant',
+		content: '',
+		parent: '1',
+		thinking: '',
+		children: []
+	});
+
+	// Streaming message for [THINK] format
+	let streamingBracketMessage = $state({
+		id: '9',
+		convId: 'conv-1',
+		type: 'message',
+		timestamp: 0, // No timestamp = streaming
+		role: 'assistant',
+		content: '',
+		parent: '1',
+		thinking: '',
+		children: []
+	});
 </script>
 
 <Story
@@ -144,3 +198,105 @@
 		await new Promise(resolve => setTimeout(resolve, 100));
 	}}
 />
+
+<Story
+	name="ThinkTagFormat"
+	args={{
+		class: 'max-w-[56rem] w-[calc(100vw-2rem)]',
+		message: thinkTagMessage
+	}}
+/>
+
+<Story
+	name="ThinkBracketFormat"
+	args={{
+		class: 'max-w-[56rem] w-[calc(100vw-2rem)]',
+		message: thinkBracketMessage
+	}}
+/>
+
+<Story
+	name="StreamingThinkTag"
+	args={{
+		message: streamingThinkMessage
+	}}
+	asChild
+	play={async () => {
+		// Phase 1: Stream <think> reasoning content
+		const thinkingContent =
+			'Let me work through this problem systematically:\n\n1. First, I need to understand what the user is asking\n2. Then I should consider different approaches\n3. I need to evaluate the pros and cons\n4. Finally, I should provide a clear recommendation\n\nThis step-by-step approach will ensure accuracy.';
+
+		let currentContent = '<think>\n';
+		streamingThinkMessage.content = currentContent;
+
+		for (let i = 0; i < thinkingContent.length; i++) {
+			currentContent += thinkingContent[i];
+			streamingThinkMessage.content = currentContent;
+			await new Promise((resolve) => setTimeout(resolve, 20));
+		}
+
+		// Close the thinking block
+		currentContent += '\n</think>\n\n';
+		streamingThinkMessage.content = currentContent;
+		await new Promise((resolve) => setTimeout(resolve, 200));
+
+		// Phase 2: Stream main response content
+		const responseContent =
+			"Based on my analysis above, here's the solution:\n\n**Key Points:**\n- The approach should be systematic\n- We need to consider all factors\n- Implementation should be step-by-step\n\nThis ensures the best possible outcome.";
+
+		for (let i = 0; i < responseContent.length; i++) {
+			currentContent += responseContent[i];
+			streamingThinkMessage.content = currentContent;
+			await new Promise((resolve) => setTimeout(resolve, 30));
+		}
+
+		streamingThinkMessage.timestamp = Date.now();
+	}}
+>
+	<div class="w-[56rem]">
+		<ChatMessage message={streamingThinkMessage} />
+	</div>
+</Story>
+
+<Story
+	name="StreamingThinkBracket"
+	args={{
+		message: streamingBracketMessage
+	}}
+	asChild
+	play={async () => {
+		// Phase 1: Stream [THINK] reasoning content
+		const thinkingContent =
+			'Using the DeepSeek format now:\n\n- This demonstrates the &#91;THINK&#93; bracket format\n- Should parse identically to &lt;think&gt; tags\n- The UI should display this in the thinking section\n- Main content should be separate\n\nBoth formats provide the same functionality.';
+
+		let currentContent = '[THINK]\n';
+		streamingBracketMessage.content = currentContent;
+
+		for (let i = 0; i < thinkingContent.length; i++) {
+			currentContent += thinkingContent[i];
+			streamingBracketMessage.content = currentContent;
+			await new Promise((resolve) => setTimeout(resolve, 25));
+		}
+
+		// Close the thinking block
+		currentContent += '\n[/THINK]\n\n';
+		streamingBracketMessage.content = currentContent;
+		await new Promise((resolve) => setTimeout(resolve, 200));
+
+		// Phase 2: Stream main response content
+		const responseContent =
+			"Here's my response after using the &#91;THINK&#93; format:\n\n**Observations:**\n- Both &lt;think&gt; and &#91;THINK&#93; formats work seamlessly\n- The parsing logic handles both cases\n- UI display is consistent across formats\n\nThis demonstrates the enhanced thinking content support.";
+
+		for (let i = 0; i < responseContent.length; i++) {
+			currentContent += responseContent[i];
+			streamingBracketMessage.content = currentContent;
+			await new Promise((resolve) => setTimeout(resolve, 30));
+		}
+
+		streamingBracketMessage.timestamp = Date.now();
+	}}
+>
+	<div class="w-[56rem]">
+		<ChatMessage message={streamingBracketMessage} />
+	</div>
+</Story>