iiab/roles/calibre/tasks/main.yml

- name: Download latest calibre-installer.py from GitHub
# seems to work with just about any Linux, and deals with dependencies
  get_url:
    url: "{{ calibre_src_url }}"
    dest: "{{ downloads_dir }}/calibre-installer.py"
    mode: 0755
    force: yes
    backup: yes
  register: calibre_download_output
  when: internet_available

# ALWAYS DEFINED, DESPITE get_url DOCUMENTATION CLAIM...
# - debug:
#     msg: "{{ calibre_download_output.src }}"
#
# DEFINED ONLY WHEN /opt/iiab/downloads/calibre-installer.py CHANGES
# - debug:
#    msg: "{{ calibre_download_output.backup_file }}"

# OOPS BAD IDEA: changes in https://github.com/kovidgoyal/calibre/commits/master/setup/linux-installer.py are not sync'd with Calibre releases!
# - name: FORCE AN UPGRADE IF calibre-installer.py HAS CHANGED, IF SO ORIGINAL IS SAVED TO {{ calibre_download_output.backup_file }}
#   file:
#     path: /usr/bin/calibre-uninstall
#     state: absent
#   when: calibre_download_output.backup_file is defined

- name: Check if calibre-installer.py exists in /opt/iiab/downloads
  stat:
    path: "{{ downloads_dir }}/calibre-installer.py"
  register: calib_inst

- name: Check if calibre-uninstall exists in /usr/bin
  stat:
    path: "/usr/bin/calibre-uninstall"
  register: calib_uninst

- name: FAIL (force Ansible to exit) IF /opt/iiab/downloads/calibre-installer.py doesn't exist OR needed Internet connection is missing
# meta: end_play
  fail:
    msg: "{{ downloads_dir }}/calibre-installer.py and an Internet connection are REQUIRED in order to install Calibre!"
  when: (not calib_inst.stat.exists) or (not internet_available and not calib_uninst.stat.exists)

# INSTALL THE LATEST CALIBRE (calibre-server etc) ON ALL OS'S - RUNS IF /usr/bin/calibre-uninstall DOES NOT ALEADY EXIST

- name: Run calibre-installer.py to install Calibre programs into /usr/bin - MANUALLY REMOVE /usr/bin/calibre-uninstall TO FORCE calibre-installer.py TO REINSTALL/UPGRADE HERE!
  shell: "{{ downloads_dir }}/calibre-installer.py >> /dev/null"
  args:
    creates: /usr/bin/calibre-uninstall
  when: internet_available

# - name: Install Calibre (OS's other than CentOS)
# # the fedora rpm arm version, though older, takes care of dependencies, and exists
#   package: name={{ item }}
#            state=present
#   with_items:
#     - calibre
#   when: calibre_install and ansible_distribution != 'CentOS'

- name: Create calibre-serve.service and calibre.conf
  template:
    backup: no
    src: "{{ item.src }}"
    dest: "{{ item.dest }}"
    owner: root
    group: root
    mode: "{{ item.mode }}"
  with_items:
    - { src: 'calibre-serve.service.j2', dest: '/etc/systemd/system/calibre-serve.service', mode: '0644'}
    - { src: 'calibre.conf', dest: '/etc/{{ apache_config_dir }}', mode: '0644'}

# http://box:8080 & http://box:8080/mobile WORK BUT OTHER URL'S LIKE http://box/books ARE A MESS (BOOKS RARELY DISPLAY)
- name: Create calibre.conf link for UNTESTED http://box/books etc (debuntu)
  file:
    src: /etc/apache2/sites-available/calibre.conf
    dest: /etc/apache2/sites-enabled/calibre.conf
    state: link
  when: is_debuntu

# CREATE CALIBRE DATABASE WITH A SAMPLE BOOK

- name: Disable Calibre service -- stops calibre-server by Kovid Goyal
  service:
    name: calibre-serve
    enabled: no
    state: stopped

- name: Create /library/calibre (mandatory since Calibre 3.x)
  file:
    path: "{{ calibre_dbpath }}"
    state: directory
    mode: 0755

- name: Check if sample book exists in /opt/iiab/downloads
  stat:
    path: "{{ content_base }}/downloads/{{ calibre_sample_book }}"
  register: sample_bk

- name: Download sample book (mandatory since Calibre 3.x)
  get_url:
    url: "{{ iiab_download_url }}/{{ calibre_sample_book }}"
    dest: "{{ content_base }}/downloads"
  when: internet_available and not sample_bk.stat.exists

- name: Check if sample book exists in /opt/iiab/downloads
  stat:
    path: "{{ content_base }}/downloads/{{ calibre_sample_book }}"
  register: sample_bk

- name: Check if /library/calibre/metadata.db exists
  stat:
    path: "{{ calibre_dbpath }}/metadata.db"
  register: calibre_db

- name: Incorporate sample book into Calibre DB (mandatory since Calibre 3.x)
  shell: "calibredb add {{ content_base }}/downloads/{{ calibre_sample_book }} --with-library {{ calibre_dbpath }}"
  when: sample_bk.stat.exists and not calibre_db.stat.exists

# WRAP UP CALIBRE INSTALLATION

- name: Enable Calibre service -- runs calibre-server by Kovid Goyal
  service:
    name: calibre-serve
    enabled: yes
    state: started
    #async: 900
    #poll: 5
  when: calibre_enabled

# - name: Disable Calibre service -- stops calibre-server by Kovid Goyal
#   service: name=calibre-serve
#            enabled=no
#            state=stopped
#   when: not calibre_enabled

- name: Add 'calibre-serve' to service list
  ini_file:
    dest: "{{ service_filelist }}"
    section: calibre
    option: "{{ item.option }}"
    value: "{{ item.value }}"
  with_items:
    - option: description
      value: '"Calibre is an extremely popular personal library system for e-books."'
    - option: url
      value: "{{ calibre_src_url }}"
    - option: database
      value: "{{ calibre_dbpath }}"
    - option: port
      value: "{{ calibre_port }}"
    - option: enabled
      value: "{{ calibre_enabled }}"