backup.yml

---
- name: Backup dot files and configs to GitHub
  hosts: localhost
  gather_facts: true
  vars:
    cur_home: "{{ ansible_play_hosts[0] }}"
    git_name: "{{ ansible_play_hosts[1] }}"
    git_email: "{{ ansible_play_hosts[2] }}"
    backup_repo: "{{ ansible_play_hosts[3] }}"
    test: "{{ ansible_env.HOME }}"
    required_args:
      - git_name
      - git_email
      - backup_repo

  tasks:
    #- name: Check if required args are set
    #  assert:
    #    that: item is defined
    #  fail_msg: "{{ item }} is not set. Please provide a value for {{ item }}"
    #  with_items:
    #    - git_name
    #    - git_email
    #    - backup_repo

    - name: Debug HOME environment variable
      debug:
        var: cur_home

    - name: Read GitHub Token from ~/.github_token file
      slurp:
        src: "{{ cur_home }}/.github_token"
      register: github_token_file

    - name: Set GitHub Token
      set_fact:
        github_token: "{{ github_token_file.content | b64decode | regex_replace('\\s+$', '') }}"

    - name: Ensure /tmp/backups directory exists
      file:
        path: /tmp/backups
        state: directory

    - name: Check if /tmp/backups directory is already added to Git config
      shell: git config --get-all safe.directory | grep -q '/tmp/backups'
      register: safe_directory_exists
      ignore_errors: yes
    
    - name: Add exception for /tmp/backups directory in Git config if not already added
      command: git config --global --add safe.directory /tmp/backups
      when: not safe_directory_exists.rc == 0

    - name: Clone the GitHub repository
      git:
        repo: "https://{{ github_token }}@github.com/{{ backup_repo }}.git"
        dest: /tmp/backups
        clone: yes
        update: yes
        force: yes

    - name: Backup dot files and configs
      find:
        hidden: true
        paths:
          - "{{ ansible_env.HOME }}"
        patterns:
          - '.*'
          - '*.conf'
          - '*.cfg'
          - '*.ini'
        file_type: file
      register: backup_files

    - name: Copy backup files to local directory
      copy:
        src: "{{ item.path }}"
        dest: /tmp/backups/{{ item.path | basename }}
      with_items: "{{ backup_files.files }}"

    - name: Check if .backer_add file exists
      stat:
        path: "{{ cur_home}}/.backer_add"
      register: backer_add_file

    - name: Set .backer_add variable
      set_fact:
        backer_add: "{{ '--files-from=' + cur_home + '/.backer_add' if backer_add_file.stat.exists else '' }}"

    - name: Sync dot files and configs
      command: rsync -av --delete --copy-links --exclude=.git/ {{ backer_add }} --include='.*' --include='*.conf' --include='*.cfg' --include='*.ini' "{{ ansible_env.HOME }}/" /tmp/backups/

    - name: Check for changes
      command: git status --porcelain
      args:
        chdir: /tmp/backups
      register: git_status

    - name: Set Git user name and email for the repository
      command: git config user.name "{{ git_name }}"
      args:
        chdir: /tmp/backups

    - name: Set Git user email for the repository
      command: git config user.email "{{ git_email }}"
      args:
        chdir: /tmp/backups

    - name: Commit and push backup files to GitHub if changes
      shell: |
        cd /tmp/backups
        git add .
        [ "$(git status --porcelain | wc -l)" -eq 0 ] || (git commit -m "Backup $(date --iso-8601=seconds)" && git push)
      register: mygit
      failed_when: mygit.rc != 0