computer-playbook/roles/web-app-moodle/tasks/database.yml

- name: Check if config.php exists
  command: docker exec --user root {{ moodle_name }} test -f {{ moodle_config }}
  register: config_file_exists
  changed_when: false
  failed_when: false

- name: Backup config.php to host
  when: config_file_exists.rc == 0
  block:
    - name: Create backup directory on host
      ansible.builtin.file:
        path: "/opt/docker/moodle/_backup"
        state: directory
        mode: "0755"

    - name: Copy config.php from container to host
      command: >
        docker cp {{ moodle_name }}:{{ moodle_config }} /opt/docker/moodle/_backup/config.php.bak

- name: Check if config.php exists
  command: docker exec --user root {{ moodle_name }} test -f {{ moodle_config }}
  register: config_file_exists
  changed_when: false
  failed_when: false

- name: Patch Moodle config.php with updated DB credentials
  when: config_file_exists.rc == 0
  block:
    - name: Update DB host
      command: >
        docker exec --user root {{ moodle_name }}
        sed -i "s/^\$CFG->dbhost *= *.*/\$CFG->dbhost = '{{ database_host }}';/" {{ moodle_config }}

    - name: Update DB name
      command: >
        docker exec --user root {{ moodle_name }}
        sed -i "s/^\$CFG->dbname *= *.*/\$CFG->dbname = '{{ database_name }}';/" {{ moodle_config }}

    - name: Update DB user
      command: >
        docker exec --user root {{ moodle_name }}
        sed -i "s/^\$CFG->dbuser *= *.*/\$CFG->dbuser = '{{ database_username }}';/" {{ moodle_config }}

    - name: Update DB password
      command: >
        docker exec --user root {{ moodle_name }}
        sed -i "s/^\$CFG->dbpass *= *.*/\$CFG->dbpass = '{{ database_password }}';/" {{ moodle_config }}