(function (root, factory) {
  var api = factory()
  if (typeof module === 'object' && module.exports) module.exports = api
  else root.WelcomePageNavigation = api
}(typeof self !== 'undefined' ? self : this, function () {
  function navigateToMiniProgramHome(miniProgram, onFailure) {
    var fail = typeof onFailure === 'function' ? onFailure : function () {}
    if (!miniProgram || typeof miniProgram.reLaunch !== 'function') {
      fail()
      return false
    }

    try {
      miniProgram.reLaunch({
        url: '/pages/home',
        fail: fail
      })
      return true
    } catch (error) {
      fail(error)
      return false
    }
  }

  function bindWelcomeButton(button, getMiniProgram, onFailure) {
    if (!button || typeof button.addEventListener !== 'function') return
    var navigating = false

    function unlockAndReport(error) {
      navigating = false
      button.removeAttribute('aria-busy')
      if (typeof onFailure === 'function') onFailure(error)
    }

    button.addEventListener('click', function (event) {
      if (event && typeof event.preventDefault === 'function') event.preventDefault()
      if (navigating) return

      navigating = true
      button.setAttribute('aria-busy', 'true')
      var miniProgram = typeof getMiniProgram === 'function' ? getMiniProgram() : null
      navigateToMiniProgramHome(miniProgram, unlockAndReport)
    })
  }

  return {
    bindWelcomeButton: bindWelcomeButton,
    navigateToMiniProgramHome: navigateToMiniProgramHome
  }
}))