From 993121e517ad74548d20ef4d0de1db41930acb22 Mon Sep 17 00:00:00 2001
From: Jim Myhrberg <contact@jimeh.me>
Date: Sat, 1 Jan 2022 03:08:00 +0000
Subject: [PATCH] feat(etherpad): add optional admin web-UI access

Enables optional access to Etherpad's web-UI. This is useful for
managing Etherpad plugins.

Among other things, plugins makes it easy to manage/delete pads if you
install the adminpads2 plugin.
---
 docs/configuring-playbook-etherpad.md           | 17 +++++++++++++++++
 roles/matrix-etherpad/defaults/main.yml         |  5 +++++
 .../matrix-etherpad/templates/settings.json.j2  |  8 ++++++++
 3 files changed, 30 insertions(+)

diff --git a/docs/configuring-playbook-etherpad.md b/docs/configuring-playbook-etherpad.md
index e5533e717..4c38bb3ca 100644
--- a/docs/configuring-playbook-etherpad.md
+++ b/docs/configuring-playbook-etherpad.md
@@ -25,6 +25,23 @@ The Dimension administrator users can configure the default URL template. The Di
 If you wish to disable the Etherpad chat button, you can do it by appending `?showChat=false` to the end of the pad URL, or the template.
 Example: `https://dimension.<your-domain>/etherpad/p/$roomId_$padName?showChat=false`
 
+### Etherpad Admin access (optional)
+
+Etherpad comes with a admin web-UI which is disabled by default. You can enable it by setting a username and password in your configuration file (`inventory/host_vars/matrix.<your-domain>/vars.yml`):
+
+```yaml
+matrix_etherpad_admin_username: admin
+matrix_etherpad_admin_password: some-password
+```
+
+The admin web-UI should then be available on: `https://dimension.<your-domain>/etherpad/admin`
+
+### Managing / Deleting old pads
+
+If you want to manage and remove old unused pads from Etherpad, you will first need to able Admin access as described above.
+
+Then from the plugin manager page (`https://dimension.<your-domain>/etherpad/admin/plugins`), install the `adminpads2` plugin. Once installed, you should have a "Manage pads" section in the Admin web-UI.
+
 ## Known issues
 
 If your Etherpad widget fails to load, this might be due to Dimension generating a Pad name so long, the Etherpad app rejects it.
diff --git a/roles/matrix-etherpad/defaults/main.yml b/roles/matrix-etherpad/defaults/main.yml
index f04d8589a..bcabc3ddc 100644
--- a/roles/matrix-etherpad/defaults/main.yml
+++ b/roles/matrix-etherpad/defaults/main.yml
@@ -41,6 +41,11 @@ matrix_etherpad_database_hostname: 'matrix-postgres'
 matrix_etherpad_database_port: 5432
 matrix_etherpad_database_name: 'matrix_etherpad'
 
+# If a admin username and password is set, the /admin web page will be
+# available.
+matrix_etherpad_admin_username: ''
+matrix_etherpad_admin_password: ''
+
 matrix_etherpad_database_connection_string: 'postgres://{{ matrix_etherpad_database_username }}:{{ matrix_etherpad_database_password }}@{{ matrix_etherpad_database_hostname }}:{{ matrix_etherpad_database_port }}/{{ matrix_etherpad_database_name }}'
 
 # Variables configuring the etherpad
diff --git a/roles/matrix-etherpad/templates/settings.json.j2 b/roles/matrix-etherpad/templates/settings.json.j2
index 573b445d8..01127a911 100644
--- a/roles/matrix-etherpad/templates/settings.json.j2
+++ b/roles/matrix-etherpad/templates/settings.json.j2
@@ -71,6 +71,14 @@
     "chatAndUsers": false,
     "lang": "en-gb"
   },
+{% if matrix_etherpad_admin_username != "" and matrix_etherpad_admin_password != "" %}
+  "users": {
+    "{{ matrix_etherpad_admin_username }}": {
+      "password": "{{ matrix_etherpad_admin_password }}",
+      "is_admin": true
+    }
+  },
+{% endif %}
   "padShortcutEnabled" : {
     "altF9": true,
     "altC": true,