Function getTopic

chat-sample/src/simple.ts:207–223

(history: ReadonlyArray<vscode.ChatRequestTurn | vscode.ChatResponseTurn>)

// Get a random topic that the cat has not taught in the chat history yet
function getTopic(history: ReadonlyArray<vscode.ChatRequestTurn | vscode.ChatResponseTurn>): string {
	const topics = ['linked list', 'recursion', 'stack', 'queue', 'pointers'];
	// Filter the chat history to get only the responses from the cat
	const previousCatResponses = history.filter(h => {
		return h instanceof vscode.ChatResponseTurn && h.participant === CAT_PARTICIPANT_ID;
	}) as vscode.ChatResponseTurn[];
	// Filter the topics to get only the topics that have not been taught by the cat yet
	const topicsNoRepetition = topics.filter(topic => {
		return !previousCatResponses.some(catResponse => {
			return catResponse.response.some(r => {
				return r instanceof vscode.ChatResponseMarkdownPart && r.value.value.includes(topic);
			});
		});
	});

	return topicsNoRepetition[Math.floor(Math.random() * topicsNoRepetition.length)] || 'I have taught you everything I know. Meow!';
}