weixin-plugin-test/weixin-plugin/weixin/storage/sync-buf.ts

import fs from "node:fs";
import path from "node:path";
import os from "node:os";

export function resolvePreferredOpenClawTmpDir(): string {
  const envOverride = process.env.OPENCLAW_TMP_DIR?.trim();
  if (envOverride) return envOverride;
  const stateDir = process.env.OPENCLAW_STATE_DIR?.trim() ||
    process.env.CLAWDBOT_STATE_DIR?.trim() ||
    path.join(os.homedir(), ".openclaw");
  return path.join(stateDir, "tmp");
}

export function resolveWeixinAccountDataDir(): string {
  const stateDir = process.env.OPENCLAW_STATE_DIR?.trim() ||
    process.env.CLAWDBOT_STATE_DIR?.trim() ||
    path.join(os.homedir(), ".openclaw");
  return path.join(stateDir, "openclaw-weixin");
}

export function resolveWeixinAccountsDir(): string {
  return path.join(resolveWeixinAccountDataDir(), "accounts");
}

export function resolveSyncBufFilePath(accountId: string): string {
  return path.join(resolveWeixinAccountsDir(), `${accountId}.sync.json`);
}

export function resolveTmpDir(): string {
  return resolvePreferredOpenClawTmpDir();
}

export function loadGetUpdatesBuf(filePath: string): string | null {
  try {
    if (fs.existsSync(filePath)) {
      return fs.readFileSync(filePath, "utf-8");
    }
  } catch { /* ignore */ }
  return null;
}

export function saveGetUpdatesBuf(filePath: string, buf: string): void {
  const dir = path.dirname(filePath);
  fs.mkdirSync(dir, { recursive: true });
  fs.writeFileSync(filePath, buf, "utf-8");
}