From caba16ea0d3a4cc9ed6c91429a31dc7737cf8fea Mon Sep 17 00:00:00 2001
From: Thomas vO <thomasvo@grenoble-inp.fr>
Date: Wed, 28 Nov 2018 11:02:51 +0100
Subject: [PATCH] add script + doc to remove everything

---
 docs/uninstalling.md                          |  5 ++-
 .../matrix-server/tasks/setup/setup_main.yml  |  9 ++++-
 .../usr-local-bin/matrix-remove-all.j2        | 34 +++++++++++++++++++
 3 files changed, 46 insertions(+), 2 deletions(-)
 create mode 100644 roles/matrix-server/templates/usr-local-bin/matrix-remove-all.j2

diff --git a/docs/uninstalling.md b/docs/uninstalling.md
index 3693ac1b..7acb9bcc 100644
--- a/docs/uninstalling.md
+++ b/docs/uninstalling.md
@@ -18,4 +18,7 @@ However, if you've installed this on some server where you have other stuff you
 
 - uninstall Docker itself, if necessary
 
-- delete the `/matrix` directory (`rm -rf /matrix`)
\ No newline at end of file
+- delete the `/matrix` directory (`rm -rf /matrix`)
+
+The script `/usr/local/bin/matrix-remove-all` performs all these steps (**use with caution!**).
+
diff --git a/roles/matrix-server/tasks/setup/setup_main.yml b/roles/matrix-server/tasks/setup/setup_main.yml
index a4da6986..a147c862 100644
--- a/roles/matrix-server/tasks/setup/setup_main.yml
+++ b/roles/matrix-server/tasks/setup/setup_main.yml
@@ -53,4 +53,11 @@
 - name: Create Matrix network in Docker
   shell:
     cmd: "docker network create --driver=bridge {{ matrix_docker_network }}"
-  when: "result_check_docker_network.stdout == ''"
\ No newline at end of file
+  when: "result_check_docker_network.stdout == ''"
+
+- name: Ensure matrix-remove-all script created
+  template:
+    src: "{{ role_path }}/templates/usr-local-bin/matrix-remove-all.j2"
+    dest: "/usr/local/bin/matrix-remove-all"
+    mode: 0750
+
diff --git a/roles/matrix-server/templates/usr-local-bin/matrix-remove-all.j2 b/roles/matrix-server/templates/usr-local-bin/matrix-remove-all.j2
new file mode 100644
index 00000000..5614b0e3
--- /dev/null
+++ b/roles/matrix-server/templates/usr-local-bin/matrix-remove-all.j2
@@ -0,0 +1,34 @@
+#!/bin/bash
+
+if [ "$(id -u)" != "0" ]; then
+        echo "This script must be executed as root! Aborting."
+        exit 1
+fi
+
+echo "WARNING! You are about to remove everything the playbook installs for matrix.{{ host_specific_hostname_identity }}: matrix, docker images,..."
+echo -n "If you're sure you want to do this, type: 'Yes, I really want to remove everything!'"
+read sure
+
+if [ "$sure" != "Yes, I really want to remove everything!" ]; then
+        echo "Good thing I asked, exiting"
+        exit 0
+else
+        echo "Stop and remove matrix services"
+        for s in $(find /etc/systemd/system/ -name "matrix-*" -printf "%f\n"); do
+                systemctl stop $s
+                rm -f /etc/systemd/system/$s
+        done
+        systemctl daemon-reload
+        echo "Remove matrix cronjobs"
+        find /etc/cron.d/ -name "matrix-*" -delete
+        echo "Remove matrix scripts"
+        find /usr/local/bin/ -name "matrix-*" -delete
+        echo "Remove every docker images"
+        docker rmi $(docker images -aq)
+        echo "Remove docker matrix network"
+        docker network rm matrix
+        echo "Remove /matrix directory"
+        rm -fr /matrix
+        exit 0
+fi
+