kimi-code/apps/kimi-code/src/cli/update/cache.ts

import { z } from 'zod';

import { getUpdateStateFile } from '#/utils/paths';
import { readJsonFile, writeJsonFile } from '#/utils/persistence';

import { emptyUpdateCache, type UpdateCache } from './types';

const UpdateCacheSchema: z.ZodType<UpdateCache> = z
  .object({
    source: z.literal('cdn'),
    checkedAt: z.string().min(1).nullable(),
    latest: z.string().min(1).nullable(),
  })
  .strict();

export async function readUpdateCache(
  filePath: string = getUpdateStateFile(),
): Promise<UpdateCache> {
  try {
    return await readJsonFile(filePath, UpdateCacheSchema, emptyUpdateCache());
  } catch {
    return emptyUpdateCache();
  }
}

export async function writeUpdateCache(
  value: UpdateCache,
  filePath: string = getUpdateStateFile(),
): Promise<void> {
  await writeJsonFile(filePath, UpdateCacheSchema, value);
}