function canUsePrivacyApis() {
  return typeof wx.getPrivacySetting === 'function';
}

function getPrivacySetting() {
  return new Promise((resolve) => {
    if (!canUsePrivacyApis()) {
      resolve({ needAuthorization: false, privacyContractName: '' });
      return;
    }
    wx.getPrivacySetting({
      success(res) {
        resolve({
          needAuthorization: Boolean(res?.needAuthorization),
          privacyContractName: String(res?.privacyContractName || ''),
        });
      },
      fail() {
        resolve({ needAuthorization: false, privacyContractName: '' });
      },
    });
  });
}

function openPrivacyContract() {
  if (typeof wx.openPrivacyContract !== 'function') {
    wx.showToast({ title: '请升级微信版本后查看', icon: 'none' });
    return;
  }
  wx.openPrivacyContract({
    fail() {
      wx.showToast({ title: '暂时无法打开隐私指引', icon: 'none' });
    },
  });
}

function registerPrivacyAuthorizationListener(handler) {
  if (typeof wx.onNeedPrivacyAuthorization !== 'function') {
    return;
  }
  wx.onNeedPrivacyAuthorization((resolve) => {
    handler(resolve);
  });
}

module.exports = {
  canUsePrivacyApis,
  getPrivacySetting,
  openPrivacyContract,
  registerPrivacyAuthorizationListener,
};