---
# Get rootfs block device name
- name: Get rootfs block device name
  ansible.builtin.command:
    cmd: 'sed -n -e "/\s\/overlay\s.*$/s///p" /etc/mtab'
  register: rootfs_block_device_name
  changed_when: rootfs_block_device_name.rc != 0

# Set rootfs block device name fact
- name: Set rootfs block device name fact
  ansible.builtin.set_fact:
    block_device_name: "{{ rootfs_block_device_name.stdout }}"

# Mount rootfs data to another directory
- name: Mount rootfs data to another directory
  block:
    # Add new mount point for root
    - name: Add new mount point for root
      uci:
        command: "add"
        config: "fstab"
        section: "rwm"
        type: "mount"

    # Configure new mount point for root
    - name: Configure new mount point for root
      uci:
        command: "set"
        config: "fstab"
        section: "rwm"
        type: "mount"
        value:
          device: "{{ block_device_name }}"
          target: "/rwm"

# Get external USB device UUID
- name: Get external usb device uuid
  ansible.builtin.command:
    cmd: 'block info /dev/{{ extroot_device }}1 | grep -o -e "UUID=\S*"'
  register: external_usb_device_uuid
  changed_when: external_usb_device_uuid.rc != 0

# Set external usb device uuid fact
- name: Set external usb device uuid fact
  ansible.builtin.set_fact:
    usb_device_uuid: '{{ external_usb_device_uuid.stdout | regex_search(''(?<=")(.*?)(?=")'') }}'

# Mount external USB as overlayfs
- name: Mount external usb as overlayfs
  block:
    # Add overlay mount point
    - name: Add overlay mount point
      uci:
        command: "add"
        config: "fstab"
        section: "overlay"
        type: "mount"

    # Configure overlay mount point
    - name: Configure overlay mount point
      uci:
        command: "set"
        config: "fstab"
        section: "overlay"
        type: "mount"
        value:
          uuid: "{{ usb_device_uuid }}"
          target: "/overlay"