From 3d0b74cb4b33e53fd9c06241adf419e3577f884d Mon Sep 17 00:00:00 2001
From: Lilian Roller <lilian.roller@wingcon.com>
Date: Wed, 29 May 2019 11:00:13 +0200
Subject: [PATCH] implement version controll

---
 defaults/main.yml      |  4 ++++
 tasks/main.yml         |  3 +++
 tasks/versioncheck.yml | 39 +++++++++++++++++++++++++++++++++++++++
 vars/main.yml          |  3 +++
 4 files changed, 49 insertions(+)
 create mode 100644 tasks/versioncheck.yml

diff --git a/defaults/main.yml b/defaults/main.yml
index 9146077..154cb9d 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -1,4 +1,6 @@
 ---
+# Here are the variables you may want to change
+# to configure i3wm
 i3_keybindings_extra: []
 #  - keybinding:
 #    name: example
@@ -35,3 +37,5 @@ i3_packages_extra:
   - ranger
 # which user are we?
 i3wm_user: "{{ ansible_user_id }}"
+# version check for this role?
+submodules_versioncheck: true
diff --git a/tasks/main.yml b/tasks/main.yml
index 5582544..524dfb0 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -1,4 +1,7 @@
 ---
+- include_tasks: versioncheck.yml
+  when: submodules_versioncheck|bool
+
 - name: register variables
   import_tasks: variables.yml
 
diff --git a/tasks/versioncheck.yml b/tasks/versioncheck.yml
new file mode 100644
index 0000000..28464aa
--- /dev/null
+++ b/tasks/versioncheck.yml
@@ -0,0 +1,39 @@
+---
+- name: Create directory for versionscheck
+  become: true
+  file:
+    path: '/etc/ansible-version'
+    state: directory
+    mode: 0755
+  when: submodules_versioncheck|bool
+
+- name: check playbook version
+  become: true
+  slurp:
+    src: "{{ playbook_version_path }}"
+  register: playbook_version
+  when: submodules_versioncheck|bool
+  ignore_errors: yes
+
+- name: Print remote role version
+  debug:
+    msg: "Remote role version: {{ playbook_version.content | default('Y3VycmVudGx5IG5vdCBkZXBsb3llZAo=') | b64decode | string }}"
+  when: submodules_versioncheck|bool
+
+- name: Print locale role version
+  debug:
+    msg: "Local role version: '{{ playbook_version_number|string }}'."
+  when: submodules_versioncheck|bool
+
+- name: Check if your version is outdated
+  fail:
+    msg: "Your ansible module has the version '{{ playbook_version_number }}' and is outdated. You need to update it!"
+  when:
+    - playbook_version.content|default("Mgo=")|b64decode|int - 1 >= playbook_version_number|int and submodules_versioncheck|bool
+
+- name: write new version to remote disk
+  become: true
+  copy:
+    content: "{{ playbook_version_number }}"
+    dest: "{{ playbook_version_path }}"
+  when: submodules_versioncheck|bool
diff --git a/vars/main.yml b/vars/main.yml
index a8b25bc..1246788 100644
--- a/vars/main.yml
+++ b/vars/main.yml
@@ -32,3 +32,6 @@ __i3_workspaces:
     name: " 0 "
 
 user: "{{ i3wm_user }}"
+
+playbook_version_number: 9000 # should be over ninethousand
+playbook_version_path: '/etc/ansible-version/role-i3wm_chaos-bodensee_github.com.version'