/**
* Date utility functions for Naver Search MCP Server
*/
/**
* Convert "today" keyword to Korean Standard Time (KST) date string
* or return the original date string if it's already in yyyy-mm-dd format
*
* @param dateStr - Date string or "today" keyword
* @returns Date string in yyyy-mm-dd format (KST)
*/
export function resolveDate(dateStr: string): string {
if (dateStr.toLowerCase() === 'today') {
return getKoreanToday();
}
// Validate yyyy-mm-dd format
const dateRegex = /^\d{4}-\d{2}-\d{2}$/;
if (dateRegex.test(dateStr)) {
return dateStr;
}
// If not "today" and not valid format, throw error
throw new Error(`Invalid date format: "${dateStr}". Use "today" or yyyy-mm-dd format.`);
}
/**
* Get current Korean Standard Time (KST) date string
* KST is UTC+9
*
* @returns Date string in yyyy-mm-dd format
*/
export function getKoreanToday(): string {
const now = new Date();
// Convert to KST (UTC+9)
const kstOffset = 9 * 60 * 60 * 1000; // 9 hours in milliseconds
const kstTime = new Date(now.getTime() + kstOffset + (now.getTimezoneOffset() * 60 * 1000));
const year = kstTime.getUTCFullYear();
const month = String(kstTime.getUTCMonth() + 1).padStart(2, '0');
const day = String(kstTime.getUTCDate()).padStart(2, '0');
return `${year}-${month}-${day}`;
}
/**
* Resolve both startDate and endDate, handling "today" keyword
*
* @param startDate - Start date string or "today"
* @param endDate - End date string or "today"
* @returns Object with resolved dates
*/
export function resolveDateRange(startDate: string, endDate: string): {
startDate: string;
endDate: string;
} {
return {
startDate: resolveDate(startDate),
endDate: resolveDate(endDate),
};
}
