import { z } from "zod";

export const datetimeConfigSchema = z.object({
  defaultTimezone: z.string().min(1).default("Asia/Shanghai"),
});

export type DatetimeToolConfig = z.infer<typeof datetimeConfigSchema>;

export const DEFAULT_DATETIME_CONFIG: DatetimeToolConfig = {
  defaultTimezone: "Asia/Shanghai",
};

export function parseDatetimeConfig(raw: unknown): DatetimeToolConfig {
  const parsed = datetimeConfigSchema.safeParse(raw);
  if (!parsed.success) {
    throw new Error(`Invalid datetime config: ${parsed.error.message}`);
  }
  return parsed.data;
}