import type { CookieOptions } from "./types.ts";

export function parseCookie(cookieString: string): Record<string, string> {
  const cookies: Record<string, string> = {};
  
  if (!cookieString) return cookies;
  
  const pairs = cookieString.split(";");
  
  for (const pair of pairs) {
    const [key, ...valueParts] = pair.split("=");
    const trimmedKey = key?.trim();
    const value = valueParts.join("=")?.trim();
    
    if (trimmedKey) {
      cookies[trimmedKey] = decodeURIComponent(value || "");
    }
  }
  
  return cookies;
}

export function serializeCookie(
  name: string,
  value: string,
  options: CookieOptions = {}
): string {
  const parts = [`${encodeURIComponent(name)}=${encodeURIComponent(value)}`];
  
  if (options.maxAge !== undefined) {
    parts.push(`Max-Age=${options.maxAge}`);
  }
  
  if (options.domain) {
    parts.push(`Domain=${options.domain}`);
  }
  
  if (options.path) {
    parts.push(`Path=${options.path}`);
  }
  
  if (options.httpOnly) {
    parts.push("HttpOnly");
  }
  
  if (options.secure) {
    parts.push("Secure");
  }
  
  if (options.sameSite) {
    parts.push(`SameSite=${options.sameSite}`);
  }
  
  return parts.join("; ");
}