# usbmount 0.0.24 and/or 0.0.25 (2022-02-08) should be investigated:
# https://github.com/iiab/iiab/issues/3409

# Official usbmount 0.0.22 (2011-08-08) documentation:
# https://github.com/rbrito/usbmount/releases
# https://github.com/hfuchs/usbmount/blob/master/README (2010-08-11)
# https://github.com/rbrito/usbmount/blob/master/README.md (2018-08-10)
# https://github.com/rbrito/usbmount/blob/master/usbmount.conf (2010-04-25)

# usb_lib_writable_sticks (e.g., in /etc/iiab/local_vars.yml) must be set to true in order for non-root users to be able to write to VFAT/FAT32, NTFS and exFAT USB sticks.
# If you are still not able to write to a mounted USB stick, try unmounting the drive (sudo umount <mountpoint>) and then remount it setting umask to 0000 manually (sudo mount -o umask=0000 <device name> <mountpoint>). 


- name: Record (initial) disk space used
  shell: df -B1 --output=used / | tail -1
  register: df1


- name: Does systemd-udevd.service exist
  stat:
    path: "{{ systemd_location }}/systemd-udevd.service"
  register: udev_unit

- name: Copy udevd service to /etc/systemd/system to modify
  copy:
    src: "{{ systemd_location }}/systemd-udevd.service"
    dest: /etc/systemd/system/systemd-udevd.service
    owner: root
    group: root
    mode: 0644
  when: udev_unit.stat.exists is defined and udev_unit.stat.exists

- name: Change MountFlags from slave to shared
  lineinfile:
    backup: no
    dest: /etc/systemd/system/systemd-udevd.service
    regexp: '^MountFlags'
    line: 'MountFlags=shared'
    state: present
  when: udev_unit.stat.exists is defined and udev_unit.stat.exists

- name: Ask systemd to reread unit files (daemon-reload) and restart so systemd recognizes the changes
  systemd:
    daemon_reload: yes
    name: systemd-udevd
    state: restarted
  when: udev_unit.stat.exists is defined and udev_unit.stat.exists

# http://raspbian.raspberrypi.org/raspbian/pool/main/u/usbmount/usbmount_0.0.22_all.deb
#- name: Install {{ iiab_download_url }}/usbmount_0.0.22_all.deb, no longer supported by {RasPiOS, Debian, Ubuntu}
#  apt:
#    deb: "{{ iiab_download_url }}/usbmount_0.0.22_all.deb"
#  # when: is_debian

- name: Install lockfile-progs and util-linux for usbmount from OS repo
  package:
    name:
      - lockfile-progs
      - util-linux
    state: present

- name: Add dir {{ doc_root }}/local_content, where USB drive links can appear (0775) owned by {{ apache_user }}:{{ apache_user }}
  file:
    state: directory
    path: "{{ doc_root }}/local_content"    # /library/www/html
    owner: "{{ apache_user }}"    # www-data
    group: "{{ apache_user }}"    # 2020-02-13: changed from iiab_admin_user, after discussion on weekly call (#1228, #2222)
    mode: 0775

- name: Set up dirs /etc/usbmount/mount.d, /etc/usbmount/umount.d, /media/usb0-7
  file:
    state: directory
    path: "{{ item }}"
    mode: 0755
  with_items:
    - /etc/usbmount/mount.d
    - /etc/usbmount/umount.d
    - /media/usb0
    - /media/usb1
    - /media/usb2
    - /media/usb3
    - /media/usb4
    - /media/usb5
    - /media/usb6
    - /media/usb7

- name: Copy files from files/usbmount to filesystem
  copy:
    src: "{{ item.src }}"
    dest: "{{ item.dest }}"
    mode: "{{ item.mode }}"
  with_items:
    - { src: 'usbmount/usbmount.conf', dest: '/etc/usbmount/', mode: '0644' }
    - { src: 'usbmount/usbmount', dest: '/usr/local/sbin/', mode: '0755' }

- name: 'Install from template: /etc/udev/rules.d/usbmount.rules, /etc/systemd/system/usbmount@.service, /usr/local/sbin/iiab-clean-usb.sh'
  template:
    src: "{{ item.src }}"
    dest: "{{ item.dest }}"
    mode: "{{ item.mode }}"
  with_items:
    - { src: 'usbmount.rules.j2', dest: '/etc/udev/rules.d/usbmount.rules', mode: '0644' }
    - { src: 'usbmount@.service.j2', dest: '/etc/systemd/system/usbmount@.service', mode: '0644' }
    - { src: 'iiab-clean-usb.sh', dest: '/usr/local/sbin/', mode: '0755' }

- name: Add dir {{ doc_root }}/upload2usb (0775) owned by {{ apache_user }}:{{ apache_user }}
  file:
    state: directory
    path: "{{ doc_root }}/upload2usb"
    owner: "{{ apache_user }}"
    group: "{{ apache_user }}"
    mode: 0755

- name: Copy files from files/upload2usb/ into {{ doc_root }}/upload2usb/
  copy:
    src: "{{ item }}"
    dest: "{{ doc_root }}/upload2usb/"
  with_fileglob:
    - upload2usb/*

# 2021-03-21: If usbmount is repackaged by apt as a result of Linux kernel 5.4+
# supporting exFAT, the stanza below (might) in future no longer be needed...
# SEE ALSO: https://github.com/iiab/iiab/blob/586bfc5cb1abf6b4333a21d3fa89695f115432dc/roles/2-common/tasks/packages.yml#L11-L12
#- name: Add ' exfat fuseblk ntfs' to FILESYSTEMS var in /etc/usbmount/usbmount.conf
#  lineinfile:
#    regexp: '^FILESYSTEMS=.*'
#    line: 'FILESYSTEMS="vfat ext2 ext3 ext4 hfsplus exfat fuseblk ntfs"'
#    path: /etc/usbmount/usbmount.conf

#- name: Remove /etc/usbmount/mount.d/00_create_model_symlink
#  file:
#    path: /etc/usbmount/mount.d/00_create_model_symlink
#    state: absent


# RECORD 'USB_LIB' AS INSTALLED

- name: Record (final) disk space used
  shell: df -B1 --output=used / | tail -1
  register: df2

- name: Add 'usb_lib_disk_usage = {{ df2.stdout|int - df1.stdout|int }}' to {{ iiab_ini_file }}
  ini_file:
    path: "{{ iiab_ini_file }}"    # /etc/iiab/iiab.ini
    section: usb_lib
    option: usb_lib_disk_usage
    value: "{{ df2.stdout|int - df1.stdout|int }}"

- name: "Set 'usb_lib_installed: True'"
  set_fact:
    usb_lib_installed: True

- name: "Add 'usb_lib_installed: True' to {{ iiab_state_file }}"
  lineinfile:
    path: "{{ iiab_state_file }}"    # /etc/iiab/iiab_state.yml
    regexp: '^usb_lib_installed'
    line: 'usb_lib_installed: True'