export const STORAGE_KEY_PREFIX = 'zip_ai_chat_';
export const PLAN_STATUS_CACHE_MS = 5 * 60 * 1000;
export const INITIAL_MESSAGES_COUNT = 50;
export const MESSAGES_PER_PAGE = 50;

/**
 * Generate a storage key that includes domain and userId for proper isolation.
 * This ensures different WordPress sites and users have separate localStorage.
 */
export const getStorageKey = (key, config) => {
    const domain = config?.domain || 'unknown';
    const userId = config?.userId || 'unknown';
    return `${STORAGE_KEY_PREFIX}${domain}_${userId}_${key}`;
};

/**
 * Format messages from API response to internal format
 * @param {Array} apiMessages - Messages from API
 * @returns {Array} Formatted messages
 */
export const formatMessagesFromApi = (apiMessages) => {
    const formattedMessages = [];
    apiMessages.forEach((msg, index) => {
        // Handle user_message/assistant_message format from Laravel (primary format)
        if (msg.user_message) {
            formattedMessages.push({
                id: msg.id || Date.now() + index,
                role: 'user',
                content: msg.user_message,
                timestamp: msg.created_at || new Date().toISOString()
            });
        } else if (msg.assistant_message || msg.assistant_content) {
            const content = Array.isArray(msg.assistant_content) && msg.assistant_content.length > 0
                ? msg.assistant_content
                : msg.assistant_message;
            formattedMessages.push({
                id: msg.id || Date.now() + index + 0.5,
                role: 'assistant',
                content,
                timestamp: msg.created_at || new Date().toISOString()
            });
        } else if (msg.role && msg.content) {
            // Fallback: support role/content format for backwards compatibility
            formattedMessages.push({
                id: msg.id || Date.now() + index,
                role: msg.role,
                content: msg.content,
                timestamp: msg.created_at || new Date().toISOString()
            });
        }
    });
    return formattedMessages;
};