overleaf/services/web/frontend/js/directives/asyncForm.js

import App from '../base'
App.directive('asyncForm', [
  '$http',
  'validateCaptcha',
  'validateCaptchaV3',
  function ($http, validateCaptcha, validateCaptchaV3) {
    return {
      controller: [
        '$scope',
        '$location',
        function ($scope, $location) {
          this.getEmail = () => $scope.email
          this.getEmailFromQuery = () =>
            $location.search().email || $location.search().new_email
          return this
        },
      ],
      link(scope, element, attrs, ctrl) {
        let response
        const formName = attrs.asyncForm

        scope[attrs.name].response = response = {}
        scope[attrs.name].inflight = false
        scope.email =
          scope.email ||
          scope.usersEmail ||
          ctrl.getEmailFromQuery() ||
          attrs.newEmail

        const validateCaptchaIfEnabled = function (callback) {
          scope.$applyAsync(() => {
            scope[attrs.name].inflight = true
          })

          if (attrs.captchaActionName) {
            validateCaptchaV3(attrs.captchaActionName)
          }
          if (attrs.captcha != null) {
            validateCaptcha(callback)
          } else {
            callback()
          }
        }

        const _submitRequest = function (grecaptchaResponse) {
          const formData = {}
          for (const data of Array.from(element.serializeArray())) {
            formData[data.name] = data.value
          }

          if (grecaptchaResponse) {
            formData['g-recaptcha-response'] = grecaptchaResponse
          }

          // clear the response object which may be referenced downstream
          Object.keys(response).forEach(field => delete response[field])

          // for asyncForm prevent automatic redirect to /login if
          // authentication fails, we will handle it ourselves
          const httpRequestFn = _httpRequestFn(element.attr('method'))
          return httpRequestFn(element.attr('action'), formData, {
            disableAutoLoginRedirect: true,
          })
            .then(function (httpResponse) {
              const { data, headers } = httpResponse
              scope[attrs.name].inflight = false
              response.success = true
              response.error = false

              const onSuccessHandler = scope[attrs.onSuccess]
              if (onSuccessHandler) {
                onSuccessHandler(httpResponse)
                return
              }

              if (data.redir) {
                ga('send', 'event', formName, 'success')
                return (window.location = data.redir)
              } else if (data.message) {
                response.message = data.message

                if (data.message.type === 'error') {
                  response.success = false
                  response.error = true
                  return ga('send', 'event', formName, 'failure', data.message)
                } else {
                  return ga('send', 'event', formName, 'success')
                }
              } else if (scope.$eval(attrs.asyncFormDownloadResponse)) {
                const blob = new Blob([data], {
                  type: headers('Content-Type'),
                })
                location.href = URL.createObjectURL(blob) // Trigger file save
              }
            })
            .catch(function (httpResponse) {
              const { data, status } = httpResponse
              scope[attrs.name].inflight = false
              response.success = false
              response.error = true
              response.status = status
              response.data = data

              const onErrorHandler = scope[attrs.onError]
              if (onErrorHandler) {
                onErrorHandler(httpResponse)
                return
              }

              let responseMessage
              if (data.message && data.message.text) {
                responseMessage = data.message.text
              } else {
                responseMessage = data.message
              }

              if (status === 400) {
                // Bad Request
                response.message = {
                  text:
                    responseMessage ||
                    'Invalid Request. Please correct the data and try again.',
                  type: 'error',
                }
              } else if (status === 403) {
                // Forbidden
                response.message = {
                  text:
                    responseMessage ||
                    'Session error. Please check you have cookies enabled. If the problem persists, try clearing your cache and cookies.',
                  type: 'error',
                }
              } else if (status === 429) {
                response.message = {
                  text:
                    responseMessage ||
                    'Too many attempts. Please wait for a while and try again.',
                  type: 'error',
                }
              } else {
                response.message = {
                  text:
                    responseMessage ||
                    'Something went wrong talking to the server :(. Please try again.',
                  type: 'error',
                }
              }
              ga('send', 'event', formName, 'failure', data.message)
            })
        }

        const submit = () =>
          validateCaptchaIfEnabled(response => _submitRequest(response))

        const _httpRequestFn = (method = 'post') => {
          const $HTTP_FNS = {
            post: $http.post,
            get: $http.get,
          }
          return $HTTP_FNS[method.toLowerCase()]
        }

        element.on('submit', function (e) {
          e.preventDefault()
          submit()
        })

        if (attrs.autoSubmit) {
          submit()
        }
      },
    }
  },
])

App.directive('formMessages', function () {
  return {
    restrict: 'E',
    template: `\
<div class="alert" ng-class="{
'alert-danger': form.response.message.type == 'error',
'alert-success': form.response.message.type != 'error'
}" ng-show="!!form.response.message" ng-bind-html="form.response.message.text">
</div>
<div ng-transclude></div>\
`,
    transclude: true,
    scope: {
      form: '=for',
    },
  }
})