firefox.yaml

---
- name: Configure the Firefox profile for a user.
  become: yes
  become_user: '{{ user }}'
  hosts: laptops:&linuxhosts

  vars_files:
    - vars/users.yaml

  vars:
    preferences:
      firefox: '{{ (users["all"]["preferences"]["firefox"] | default([])) + (users[user]["preferences"]["firefox"] | default([])) }}'

  tasks:

    - name: Get Firefox profile name.
      changed_when: false
      register: ff_profile
      shell: grep 'Default=.*\.default-release' ~/.mozilla/firefox/profiles.ini | cut -d= -f2

    - name: Fail if Firefox profile was not detected.
      fail:
        msg: 'Failed to get Firefox profile: please launch and close Firefox as {{ user }}.'
      when: ff_profile.rc != 0 or not ff_profile.stdout

    - name: Make Firefox the default browser.
      copy:
        content: |
          [Default Applications]
          x-scheme-handler/http=firefox.desktop
          x-scheme-handler/https=firefox.desktop
          text/html=firefox.desktop
          application/x-extension-htm=firefox.desktop
          application/x-extension-html=firefox.desktop
          application/x-extension-shtml=firefox.desktop
          application/xhtml+xml=firefox.desktop
          application/x-extension-xht=firefox.desktop
          text/html;text/xml;application/xhtml+xml;x-scheme-handler/http;x-scheme-handler/https;multipart/related;application/x-mimearchive;message/rfc822;=firefox.desktop

          [Added Associations]
          x-scheme-handler/http=firefox.desktop;
          x-scheme-handler/https=firefox.desktop;
          text/html=firefox.desktop;
          application/x-extension-htm=firefox.desktop;
          application/x-extension-html=firefox.desktop;
          application/x-extension-shtml=firefox.desktop;
          application/xhtml+xml=firefox.desktop;
          application/x-extension-xht=firefox.desktop;
          text/html;text/xml;application/xhtml+xml;x-scheme-handler/http;x-scheme-handler/https;multipart/related;application/x-mimearchive;message/rfc822;=firefox.desktop;
        dest: ~/.config/mimeapps.list
        mode: '664'

    - name: Configure Firefox preferences.
      lineinfile:
        create: yes
        line: 'user_pref("{{ item.option }}", {{ item.value }});'
        mode: '600'
        path: '~/.mozilla/firefox/{{ ff_profile.stdout }}/user.js'
        regexp: '^user_pref\("{{ item.option }}"'
      with_items: '{{ preferences.firefox }}'