Web import tool: Add the views and templates.

templates/zerver/create_realm.html

@@ -31,6 +31,7 @@ <h1 class="get-started">{{ _("Create a new Zulip organization") }}</h1>
                 </div>
             </form>
             <div class="alert alert-error"></div>
+            <p class="inline-block relative">{{ _(' Or <a href="/web_import">import from Slack workspace</a>') }}</p>
             {% if form.email.errors %}
                 {% for error in form.email.errors %}
                 <div class="alert alert-error">{{ error }}</div>

templates/zerver/web_import.html

@@ -0,0 +1,94 @@
+{% extends "zerver/portico_signup.html" %}
+{# This is the page where we import data from Slack into Zulip. #}
+
+{% block portico_content %}
+
+<div class="register-account flex full-page">
+    <div class="center-block new-style">
+        <div class="pitch">
+            {% trans %}
+            <h1>Import Slack Workspace</h1>
+            {% endtrans %}
+        </div>
+        <form class="form-horizontal white-box" id="web-import" action="/web_import/"
+            method="post" enctype="multipart/form-data">
+            {{ csrf_input }}
+
+            <section>
+                <div class="input-box">
+                    <input id="import_email" name="email"
+                    class="email required" type="text" placeholder="{{ _("Enter Email") }}"
+                    value="{% if form.email.value() %}{{ form.email.value() }}{% endif %}"
+                    required />
+                    <label for="id_email" class="inline-block label-title">{{ _('Email') }}</label>
+                    {% if form.email.errors %}
+                        {% for error in form.email.errors %}
+                        <p class="help-inline text-error">{{ error }}</p>
+                        {% endfor %}
+                    {% endif %}
+                </div>
+            </section>
+
+            <section>
+                <div class="input-box">
+                    <input id="import_full_name" name="full_name"
+                    class="full_name" type="text" placeholder="{{ _("Enter Full Name") }}"
+                    value="{% if form.full_name.value() %}{{ form.full_name.value() }}{% endif %}"
+                    required />
+                    <label for="id_fullname" class="inline-block">{{ _('Full name') }}</label>
+                    {% if form.full_name.errors %}
+                        {% for error in form.full_name.errors %}
+                        <p class="help-inline text-error">{{ error }}</p>
+                        {% endfor %}
+                    {% endif %}
+                </div>
+            </section>
+
+            <section>
+                <div class="input-box">
+                    <input id="import_team_subdomain" name="realm_subdomain"
+                    class="realm_subdomain" type="text" placeholder="{{ _("Enter Realm Subdomain") }}"
+                    value="{% if form.realm_subdomain.value() %}{{ form.realm_subdomain.value() }}{% endif %}"
+                    required />
+                    <label for="id_subdomain" class="inline-block">{{ _('Realm Subdomain') }}</label>
+                    {% if form.realm_subdomain.errors %}
+                        {% for error in form.realm_subdomain.errors %}"
+                        <p class="help-inline text-error">{{ error }}</p>
+                        {% endfor %}
+                    {% endif %}
+                </div>
+            </section>
+
+            <section>
+                <input type="file" name="zulip_data_file"
+                    value="{{ _('Upload Import file') }}" required />
+                <div>
+                    {% if form.zulip_data_file.errors %}
+                        {% for error in form.zulip_data_file.errors %}"
+                        <p class="alert alert-error">{{ error }}</p>
+                        {% endfor %}
+                    {% endif %}
+                </div>
+            </section>
+
+            <section>
+                {% if form_error %}
+                <p class="alert alert-error">{{ form_error }}</p>
+                {% endif %}
+            </section>
+
+            <section>
+                <div class="register-button-box">
+                    <button class="register-button" type="submit">{{ _('Import') }}</button>
+                    <input type="hidden" name="next" value="{{ next }}" />
+                </div>
+            </section>
+        </form>
+
+    </div>
+</div>
+
+<script type="text/javascript">
+
+</script>
+{% endblock %}

zerver/forms.py

@@ -6,7 +6,7 @@
     PasswordResetForm
 from django.core.exceptions import ValidationError
 from django.core.urlresolvers import reverse
-from django.core.validators import validate_email
+from django.core.validators import validate_email, FileExtensionValidator
 from django.db.models.query import QuerySet
 from django.utils.translation import ugettext as _
 from django.contrib.auth.tokens import default_token_generator
@@ -115,6 +115,25 @@ def clean_realm_subdomain(self) -> str:
         check_subdomain_available(subdomain)
         return subdomain
 
+class ImportDataForm(forms.Form):
+    email = forms.EmailField(required=True)
+    full_name = forms.CharField(max_length=UserProfile.MAX_NAME_LENGTH,
+                                required=True)
+    zulip_data_file = forms.FileField(required=True,
+                                      validators=[FileExtensionValidator(allowed_extensions=['zip'])])
+    realm_subdomain = forms.CharField(max_length=Realm.MAX_REALM_SUBDOMAIN_LENGTH, required=True)
+
+    def clean_realm_subdomain(self) -> str:
+        subdomain = self.cleaned_data['realm_subdomain']
+        check_subdomain_available(subdomain)
+        return subdomain
+
+    def clean_full_name(self) -> Text:
+        try:
+            return check_full_name(self.cleaned_data['full_name'])
+        except JsonableError as e:
+            raise ValidationError(e.msg)
+
 class ToSForm(forms.Form):
     terms = forms.BooleanField(required=True)
 

zerver/views/registration.py

@@ -17,12 +17,14 @@
     get_realm, get_user, get_default_stream_groups
 from zerver.lib.send_email import send_email, FromAddress
 from zerver.lib.events import do_events_register
+from zerver.lib.export import do_import_realm
+from zerver.lib.slack_data_to_zulip_data import do_convert_data
 from zerver.lib.actions import do_change_password, do_change_full_name, do_change_is_admin, \
     do_activate_user, do_create_user, do_create_realm, \
     email_not_system_bot, compute_mit_user_fullname, validate_email_for_realm, \
     do_set_user_display_setting, lookup_default_stream_groups, bulk_add_subscriptions
 from zerver.forms import RegistrationForm, HomepageForm, RealmCreationForm, \
-    CreateUserForm, FindMyTeamForm
+    CreateUserForm, FindMyTeamForm, ImportDataForm
 from django_auth_ldap.backend import LDAPBackend, _LDAPUser
 from zerver.decorator import require_post, has_request_variables, \
     JsonableError, REQ, do_login
@@ -44,6 +46,10 @@
 import requests
 import smtplib
 import ujson
+import tempfile
+import subprocess
+import os
+import shutil
 
 import urllib
 
@@ -354,6 +360,45 @@ def create_realm(request: HttpRequest, creation_key: Optional[Text]=None) -> Htt
                   context={'form': form, 'current_url': request.get_full_path},
                   )
 
+def web_import(request: HttpRequest) -> HttpResponse:
+    if request.method == 'POST':
+        form = ImportDataForm(request.POST, request.FILES)
+        if form.is_valid():
+            zulip_import_file = request.FILES['zulip_data_file']
+            realm_name = form.cleaned_data['realm_subdomain']
+            uploaded_dir = os.path.dirname(zulip_import_file.temporary_file_path())
+            web_import_dir = uploaded_dir + '/web_import/'
+
+            if not os.path.exists(web_import_dir):
+                os.makedirs(web_import_dir)
+            os.rename(zulip_import_file.temporary_file_path(),
+                      web_import_dir + zulip_import_file.name)
+            output_dir = tempfile.mkdtemp(prefix="/tmp/converted-slack-data-")
+
+            try:
+                do_convert_data(web_import_dir + zulip_import_file.name, realm_name,
+                                output_dir)
+                do_import_realm(output_dir)
+                subprocess.check_call([os.path.join(settings.DEPLOY_ROOT,
+                                      "scripts/setup/postgres-reset-sequences")])
+
+            except FileNotFoundError as e:
+                shutil.rmtree(web_import_dir)
+                return render(request, "zerver/web_import.html",
+                              context={'form': form,
+                                       'form_error': e,
+                                       'MAX_REALM_SUBDOMAIN_LENGTH': str(Realm.MAX_REALM_SUBDOMAIN_LENGTH)
+                                       },
+                              )
+    else:
+        form = ImportDataForm()
+    return render(request,
+                  'zerver/web_import.html',
+                  context={'form': form,
+                           'MAX_REALM_SUBDOMAIN_LENGTH': str(Realm.MAX_REALM_SUBDOMAIN_LENGTH)
+                           },
+                  )
+
 # This is used only by the casper test in 00-realm-creation.js.
 def confirmation_key(request: HttpRequest) -> HttpResponse:
     return json_success(request.session.get('confirmation_key'))

zproject/urls.py

@@ -437,6 +437,9 @@
     url(r'^create_realm/(?P<creation_key>[\w]+)$',
         zerver.views.registration.create_realm, name='zerver.views.create_realm'),
 
+    url(r'^web_import/$', zerver.views.registration.web_import,
+        name='zerver.views.web_import'),
+
     # Login/registration
     url(r'^register/$', zerver.views.registration.accounts_home, name='register'),
     url(r'^login/$', zerver.views.auth.login_page, {'template_name': 'zerver/login.html'},