email: Replace `uri` with `url` in templates and backend.

In #23380 we want to change all ocurrences of `uri` to `url`. This
commit changes the ocurrences of `uri` appeared in files related to
email, including templates (`.html`, `.txt`) and backend (`.py`)
codes.

In `email.md`, `base_images_uri` is changed to `images_base_url` -
the words `base` and `images` are swapped and plural form is added
for `image`.  This is becasue the former is not found anywhere in
the codebase while the later appears a lot. To reduce confusion,
this doccumentation changed accordingly.

docs/subsystems/email.md

@@ -105,7 +105,7 @@ email_password = gmail_password
 ### Notes
 
 - Images won't be displayed in a real email client unless you change
-  the `base_image_uri` used for emails to a public URL such as
+  the `images_base_url` used for emails to a public URL such as
   `https://chat.zulip.org/static/images/emails` (image links to
   `localhost:9991` aren't allowed by modern email providers). See
   `zproject/email_backends.py` for more details.

templates/zerver/emails/confirm_new_email.html

@@ -1,7 +1,7 @@
 {% extends "zerver/emails/email_base_default.html" %}
 
 {% block illustration %}
-<img src="{{ email_images_base_uri }}/email_logo.png" alt=""/>
+<img src="{{ email_images_base_url }}/email_logo.png" alt=""/>
 {% endblock %}
 
 {% block content %}

templates/zerver/emails/confirm_registration.html

@@ -1,7 +1,7 @@
 {% extends "zerver/emails/email_base_default.html" %}
 
 {% block illustration %}
-<img src="{{ email_images_base_uri }}/registration_confirmation.png" alt=""/>
+<img src="{{ email_images_base_url }}/registration_confirmation.png" alt=""/>
 {% endblock %}
 
 {% block content %}

templates/zerver/emails/custom_email_base.pre.html

@@ -1,7 +1,7 @@
 {% extends "zerver/emails/email_base_marketing.html" %}
 
 {% block illustration %}
-<img src="{{ email_images_base_uri }}/email_logo.png" alt=""/>
+<img src="{{ email_images_base_url }}/email_logo.png" alt=""/>
 {% endblock %}
 
 {% block content %}

templates/zerver/emails/deactivate.html

@@ -1,7 +1,7 @@
 {% extends "zerver/emails/email_base_default.html" %}
 
 {% block illustration %}
-<img src="{{ email_images_base_uri }}/email_logo.png" alt=""/>
+<img src="{{ email_images_base_url }}/email_logo.png" alt=""/>
 {% endblock %}
 
 {% block content %}

templates/zerver/emails/digest.txt

@@ -9,7 +9,7 @@
     {{ new_streams.plain|display_list(1000) }}.
 {% endif %}
 
-{% trans organization_uri=realm_uri %}Click here to log in to Zulip and catch up: {{ organization_uri }}.{% endtrans %}
+{% trans organization_url=realm_uri %}Click here to log in to Zulip and catch up: {{ organization_url }}.{% endtrans %}
 
 --
 {% trans %}Manage email preferences:{% endtrans %}

templates/zerver/emails/email_base_default.html

@@ -28,7 +28,7 @@
                                             </td>
                                         </tr>
                                     </table>
-                                    <img class="bottom-illustration" src="{{ email_images_base_uri }}/footer.png" alt="{{ _('Swimming fish') }}"/>
+                                    <img class="bottom-illustration" src="{{ email_images_base_url }}/footer.png" alt="{{ _('Swimming fish') }}"/>
                                 </td>
                             </tr>
                         </table>

templates/zerver/emails/email_base_marketing.html

@@ -28,7 +28,7 @@
                                             </td>
                                         </tr>
                                     </table>
-                                    <img src="{{ email_images_base_uri }}/footer.png" alt="{{ _('Swimming fish') }}"/>
+                                    <img src="{{ email_images_base_url }}/footer.png" alt="{{ _('Swimming fish') }}"/>
                                 </td>
                             </tr>
                         </table>

templates/zerver/emails/find_team.html

@@ -1,7 +1,7 @@
 {% extends "zerver/emails/email_base_default.html" %}
 
 {% block illustration %}
-<img src="{{ email_images_base_uri }}/email_logo.png" alt=""/>
+<img src="{{ email_images_base_url }}/email_logo.png" alt=""/>
 {% endblock %}
 
 {% block content %}

templates/zerver/emails/followup_day1.html

@@ -1,7 +1,7 @@
 {% extends "zerver/emails/email_base_default.html" %}
 
 {% block illustration %}
-<img src="{{ email_images_base_uri }}/email_logo.png" alt=""/>
+<img src="{{ email_images_base_url }}/email_logo.png" alt=""/>
 {% endblock %}
 
 {% block content %}

templates/zerver/emails/followup_day2.html

@@ -1,7 +1,7 @@
 {% extends "zerver/emails/email_base_default.html" %}
 
 {% block illustration %}
-<img src="{{ email_images_base_uri }}/day2_1.png" alt=""/>
+<img src="{{ email_images_base_url }}/day2_1.png" alt=""/>
 {% endblock %}
 
 {% block content %}
@@ -19,7 +19,7 @@
     {{ _("To kick off a new conversation, just pick a stream and start a new topic. This way, the new conversation thread won't interrupt ongoing discussions. For a good topic name, think about finishing the sentence: “Hey, can we chat about…?”") }}
 </p>
 
-<img src="{{ email_images_base_uri }}/day2_2.png" alt="{{ _('Examples of short topics') }}"/>
+<img src="{{ email_images_base_url }}/day2_2.png" alt="{{ _('Examples of short topics') }}"/>
 
 <p>
     {% trans %}Don't stress about picking the perfect name for your topic. If anything is out of place, it's easy to <a href="{{ move_messages_link }}">move messages</a>, <a href="{{ rename_topics_link }}">rename topics</a>, or even <a href="{{ move_topic_to_different_stream_link }}">move a topic to a different stream</a>.{% endtrans %}

templates/zerver/emails/invitation.html

@@ -1,7 +1,7 @@
 {% extends "zerver/emails/email_base_default.html" %}
 
 {% block illustration %}
-<img src="{{ email_images_base_uri }}/registration_confirmation.png" alt=""/>
+<img src="{{ email_images_base_url }}/registration_confirmation.png" alt=""/>
 {% endblock %}
 
 {% block content %}

templates/zerver/emails/invitation_reminder.html

@@ -1,7 +1,7 @@
 {% extends "zerver/emails/email_base_default.html" %}
 
 {% block illustration %}
-<img src="{{ email_images_base_uri }}/invitation_reminder.png" alt=""/>
+<img src="{{ email_images_base_url }}/invitation_reminder.png" alt=""/>
 {% endblock %}
 
 {% block content %}

templates/zerver/emails/notify_change_in_email.html

@@ -1,7 +1,7 @@
 {% extends "zerver/emails/email_base_default.html" %}
 
 {% block illustration %}
-<img src="{{ email_images_base_uri }}/email_logo.png" alt=""/>
+<img src="{{ email_images_base_url }}/email_logo.png" alt=""/>
 {% endblock %}
 
 {% block content %}

templates/zerver/emails/notify_new_login.html

@@ -5,7 +5,7 @@
 {% endblock %}
 
 {% block illustration %}
-<img src="{{ email_images_base_uri }}/email_logo.png" alt=""/>
+<img src="{{ email_images_base_url }}/email_logo.png" alt=""/>
 {% endblock %}
 
 {% block content %}

templates/zerver/emails/onboarding_zulip_guide.html

@@ -1,7 +1,7 @@
 {% extends "zerver/emails/email_base_default.html" %}
 
 {% block illustration %}
-<img src="{{ email_images_base_uri }}/email_logo.png" alt=""/>
+<img src="{{ email_images_base_url }}/email_logo.png" alt=""/>
 {% endblock %}
 
 {% block content %}

templates/zerver/emails/password_reset.html

@@ -1,7 +1,7 @@
 {% extends "zerver/emails/email_base_default.html" %}
 
 {% block illustration %}
-<img src="{{ email_images_base_uri }}/email_logo.png" alt=""/>
+<img src="{{ email_images_base_url }}/email_logo.png" alt=""/>
 {% endblock %}
 
 {% block content %}

templates/zerver/emails/realm_auto_downgraded.html

@@ -1,7 +1,7 @@
 {% extends "zerver/emails/email_base_default.html" %}
 
 {% block illustration %}
-<img src="{{ email_images_base_uri }}/email_logo.png" alt=""/>
+<img src="{{ email_images_base_url }}/email_logo.png" alt=""/>
 {% endblock %}
 
 {% block content %}

templates/zerver/emails/realm_reactivation.html

@@ -1,7 +1,7 @@
 {% extends "zerver/emails/email_base_default.html" %}
 
 {% block illustration %}
-<img src="{{ email_images_base_uri }}/registration_confirmation.png" alt=""/>
+<img src="{{ email_images_base_url }}/registration_confirmation.png" alt=""/>
 {% endblock %}
 
 {% block content %}

zerver/lib/send_email.py

@@ -128,7 +128,7 @@ def build_email(
         # Emails use unhashed image URLs so that those continue to
         # work over time, even if the prod-static directory is cleaned
         # out; as such, they just use a STATIC_URL prefix.
-        "email_images_base_uri": settings.STATIC_URL + "images/emails",
+        "email_images_base_url": settings.STATIC_URL + "images/emails",
         "physical_address": settings.PHYSICAL_ADDRESS,
     }
 

zproject/email_backends.py

@@ -66,8 +66,8 @@ class EmailLogBackEnd(EmailBackend):
 
     @staticmethod
     def prepare_email_messages_for_forwarding(email_messages: Sequence[EmailMessage]) -> None:
-        localhost_email_images_base_uri = settings.ROOT_DOMAIN_URI + "/static/images/emails"
+        localhost_email_images_base_url = settings.ROOT_DOMAIN_URI + "/static/images/emails"
-        czo_email_images_base_uri = "https://chat.zulip.org/static/images/emails"
+        czo_email_images_base_url = "https://chat.zulip.org/static/images/emails"
 
         for email_message in email_messages:
             assert isinstance(email_message, EmailMultiAlternatives)
@@ -77,7 +77,7 @@ class EmailLogBackEnd(EmailBackend):
             # will be able to fetch the illustrations used in the emails.
             html_alternative = (
                 email_message.alternatives[0][0].replace(
-                    localhost_email_images_base_uri, czo_email_images_base_uri
+                    localhost_email_images_base_url, czo_email_images_base_url
                 ),
                 email_message.alternatives[0][1],
             )