Reload systemd services when they get updated

Fixes #69 (Github Issue)

roles/matrix-corporal/tasks/setup_corporal.yml

@@ -34,18 +34,54 @@
     src: "{{ role_path }}/templates/systemd/matrix-corporal.service.j2"
     dest: "/etc/systemd/system/matrix-corporal.service"
     mode: 0644
+  register: matrix_corporal_systemd_service_result
   when: "matrix_corporal_enabled"
 
+- name: Ensure systemd reloaded after matrix-corporal.service installation
+  service:
+    daemon_reload: yes
+  when: "matrix_corporal_enabled and matrix_corporal_systemd_service_result.changed"
+
 
 #
 # Tasks related to getting rid of matrix-corporal (if it was previously enabled)
 #
 
+- name: Check existence of matrix-corporal service
+  stat:
+    path: "/etc/systemd/system/matrix-corporal.service"
+  register: matrix_corporal_service_stat
+
+- name: Ensure matrix-corporal is stopped
+  service:
+    name: matrix-corporal
+    state: stopped
+    daemon_reload: yes
+  register: stopping_result
+  when: "not matrix_corporal_enabled and matrix_corporal_service_stat.stat.exists"
+
+- name: Ensure matrix-corporal.service doesn't exist
+  file:
+    path: "/etc/systemd/system/matrix-corporal.service"
+    state: absent
+  when: "not matrix_corporal_enabled and matrix_corporal_service_stat.stat.exists"
+
+- name: Ensure systemd reloaded after matrix-corporal.service removal
+  service:
+    daemon_reload: yes
+  when: "not matrix_corporal_enabled and matrix_corporal_service_stat.stat.exists"
+
 - name: Ensure matrix-corporal files don't exist
   file:
     path: "{{ item }}"
     state: absent
-  when: "not matrix_corporal_enabled"
   with_items:
     - /etc/systemd/system/matrix-corporal.service
     - "{{ matrix_corporal_config_dir_path }}/config.json"
+  when: "not matrix_corporal_enabled"
+
+- name: Ensure Matrix Corporal Docker image doesn't exist
+  docker_image:
+    name: "{{ matrix_corporal_docker_image }}"
+    state: absent
+  when: "not matrix_corporal_enabled"