Add toggle to do a version check before download

Old behavior is to download the binary of `gitea_version` every run,
then checksum it against the currently installed version to see if it needs
to be copied over.

New behavior is to attempt to extract the current running version of gitea
and only initiate the old behavior if the running version != `gitea_version`.

Default is old behavior due to the major logic change involved.

README.md

@@ -8,7 +8,7 @@ Gitea is a Golang Git repository webapp, having the same look and feel as GitHub
 
 It is still under developpement, see "Disclaimer" if you can't make it work.
 
-## Sample exemple of use in a playbook
+## Sample example of use in a playbook
 
 The following have been tested with Debian 8, it should work on Ubuntu as well.
 
@@ -55,6 +55,7 @@ The following have been tested with Debian 8, it should work on Ubuntu as well.
 ## More detailed options
 ### General
 
+* `gitea_version_check`: Check if installed version != `gitea_version` before initiating binary download
 * `gitea_user`: UNIX user used by Gitea
 * `gitea_home`: Base directory to work
 

defaults/main.yml

@@ -1,5 +1,6 @@
 ---
 gitea_version: "1.7.5"
+gitea_version_check: false
 
 gitea_app_name: "Gitea"
 gitea_user: "gitea"

tasks/main.yml

@@ -1,4 +1,11 @@
 ---
+- name: "Check gitea version"
+  shell: "/usr/local/bin/gitea -v | cut -d' ' -f 3"
+  register: gitea_active_version
+  changed_when: false
+  failed_when: false
+  when: gitea_version_check
+
 - name: "Download the binary"
   get_url:
     url: "{{ gitea_dl_url }}/v{{ gitea_version }}/gitea-{{ gitea_version }}-linux-{{ gitea_arch }}"
@@ -8,6 +15,7 @@
     mode: 0755
     force: true
   notify: "Restart gitea"
+  when: (gitea_version_check == false) or (gitea_active_version.stdout != gitea_version)
 
 - include: create_user.yml