// Conversation history and localStorage functionality
import { getSystemMessage } from "./config.js";

// Helper function to generate a page-specific key for localStorage
export function getPageSpecificKey(baseKey) {
	// Use the current page's URL to create a unique key
	// Replace non-alphanumeric characters to make it a valid key
	const pageIdentifier = window.location.href.replace(/[^a-zA-Z0-9]/g, "_");
	return `${baseKey}-${pageIdentifier}`;
}

// Functions for conversation history persistence
export function saveConversationHistory(chatHistory) {
	const historyToSave = chatHistory.filter((msg) => msg.role !== "system");
	localStorage.setItem(
		getPageSpecificKey("hermes-conversation-history"),
		JSON.stringify(historyToSave),
	);
}

export function loadConversationHistory() {
	const saved = localStorage.getItem(
		getPageSpecificKey("hermes-conversation-history"),
	);
	if (saved) {
		try {
			const parsedHistory = JSON.parse(saved);
			// Filter out any system messages that might have been saved before our fix
			return parsedHistory.filter((msg) => msg.role !== "system");
		} catch (e) {
			console.error("Error parsing conversation history:", e);
		}
	}
	return [];
}

export function clearConversationHistory() {
	localStorage.removeItem(getPageSpecificKey("hermes-conversation-history"));
	return [
		{
			role: "system",
			content: getSystemMessage(),
		},
	];
}

// Initialize chat history
export function initializeChatHistory() {
	return [
		{
			role: "system",
			content: getSystemMessage(),
		},
		...loadConversationHistory(),
	];
}