# 2021-05-22: FYI nginx_high_php_limits is effectively now auto-enabled by
# www_options/tasks/main.yml#L100-L112 (as required by Moodle 3.11 w/ PHP 8) IF
# 'moodle_install: True'. Happens at the end of 4-server-options/tasks/main.yml
# See the 6 settings in /etc/php/{{ php_version }}/fpm/php.ini -- which Moodle
# should take advantage of soon, as it transitions from Apache to Moodle: #2785

# 2021-06-28: This ALSO now happens in /etc/php/{{ php_version }}/cli/php.ini
# (as required by Moodle's CLI installer, DESPITE it using fpm/php.ini later!)


#- name: "Set 'apache_install: True' and 'apache_enabled: True'"
#  set_fact:
#    apache_install: True
#    apache_enabled: True

#- name: APACHE - run 'httpd' role
#  include_role:
#    name: httpd


- name: "Set 'postgresql_install: True' and 'postgresql_enabled: True'"
  set_fact:
    postgresql_install: True
    postgresql_enabled: True

- name: POSTGRESQL - run 'postgresql' role (attempt to install & enable PostgreSQL)
  include_role:
    name: postgresql


# https://docs.moodle.org/19/en/PHP_settings_by_Moodle_version#PHP_Extensions_and_libraries
- name: Install libsodium23 + 8 PHP packages (run 'php -m' or 'php -i' to verify)
  package:
    name:
      #- php-apcu                        # 2021-07-02: Experiment with fewer dependencies
      - ghostscript                      # 2021-07-02: OPTIONAL -- but useful for annotation of PDF's / assignments
      - libsodium23                      # 2021-06-28: Likewise installed in nginx/tasks/install.yml via php{{ php_version }}-fpm AND httpd/tasks/install.yml via libapache2-mod-php{{ php_version }} AND wordpress/tasks/install.yml -- it can ALSO be auto-installed by phpX.Y-cgi OR phpX.Y-cli as confirmed by 'apt rdepends libsodium23' -- Recommended by Moodle 3.11+ at https://docs.moodle.org/311/en/Environment_-_PHP_extension_sodium -- whereas https://www.php.net/manual/en/sodium.installation.php says it's always bundled with PHP 7.2+ -- VERIFY USING 'php -i | grep sodium' AND 'apt list "*sodium*"'
      #- php{{ php_version }}-common     # 2021-06-27: Auto-installed as an apt dependency.  REGARDLESS: php{{ php_version }}-common superset php{{ php_version }}-cli is auto-installed by php{{ php_version }}-fpm in nginx/tasks/install.yml
      #- php{{ php_version }}-cli        # 2021-06-27: Compare to php{{ php_version }}-common just above!  2020-06-15: In the past this included (below) mbstring?  However this is not true on Ubuntu Server 20.04 LTS.
      - php{{ php_version }}-curl        # 2021-06-27: Likewise installed in nextcloud/tasks/install.yml, pbx/tasks/freepbx_dependencies.yml, wordpress/tasks/install.yml
      - php{{ php_version }}-gd          # 2021-06-27: Likewise installed in nextcloud/tasks/install.yml, pbx/tasks/freepbx_dependencies.yml
      - php{{ php_version }}-intl        # 2020-12-03: Required by Moodle 3.10+ -- Likewise installed in mediawiki/tasks/install.yml, nextcloud/tasks/install.yml, wordpress/tasks/install.yml
      - php{{ php_version }}-mbstring    # 2020-06-15: Required by Moodle 3.9+ -- Likewise installed in mediawiki/tasks/install.yml, nextcloud/tasks/install.yml, pbx/tasks/freepbx_dependencies.yml, wordpress/tasks/install.yml
      - php{{ php_version }}-pgsql       # 2021-06-27: Required for PostgreSQL
      #- php{{ php_version }}-json       # 2021-07-02: Not requested by Moodle's PHP doc above.  Package baked into PHP 8+.  FWIW with PHP < 8, phpX.Y-json is already auto-installed by phpX.Y-fpm in 3-base-server's nginx/tasks/install.yml
      #- php{{ php_version }}-opcache    # 2021-07-02: Experiment with fewer dependencies
      #- php{{ php_version }}-readline   # 2021-07-02: Experiment with fewer dependencies
      - php{{ php_version }}-soap        # 2020-12-03: Recommended by Moodle 3.10+
      - php{{ php_version }}-xml         # 2021-06-28: Likewise installed in mediawiki/tasks/install.yml, nextcloud/tasks/install.yml, pbx/tasks/freepbx_dependencies.yml, wordpress/tasks/install.yml -- AND REGARDLESS dragged in later by Admin Console's use of php-pear for roles/cmdsrv/tasks/main.yml -- run 'php -m | grep -i xml' which in the end shows {libxml, SimpleXML, xml, xmlreader, xmlwriter}
      #- php{{ php_version }}-xmlrpc     # 2021-07-02: Doesn't exist with PHP 8.0 -- officially required per https://docs.moodle.org/19/en/PHP_settings_by_Moodle_version#PHP_Extensions_and_libraries BUT UNMAINTAINED FOR YEARS (POSSIBLE SECURITY RISK) SO MOVED TO PECL: https://php.watch/versions/8.0/xmlrpc
      - php{{ php_version }}-zip         # 2021-06-27: Likewise installed in nextcloud/tasks/install.yml, pbx/tasks/freepbx_dependencies.yml, wordpress/tasks/install.yml
    state: present

- name: Does {{ moodle_base }}/config-dist.php exist? (indicating Moodle is/was installed)
  stat:
    path: "{{ moodle_base }}/config-dist.php"    # /opt/iiab/moodle
  register: moodle

- name: Clone (i.e. use git to download) {{ moodle_repo_url }} to {{ moodle_base }} (~288 MB)
  git:
    repo: "{{ moodle_repo_url }}"
    dest: "{{ moodle_base }}"
    depth: 1
    force: yes
    version: "MOODLE_{{ moodle_version }}_STABLE"
    #version: master   # TEMPORARY DURING MAY 2018 TESTING, installed 3.5beta+ = https://download.moodle.org/releases/development/
  #ignore_errors: yes
  when: internet_available and moodle.stat.exists is defined and not moodle.stat.exists

- name: Create dir {{ moodle_base }} owned by {{ apache_user }} (for config file?)
  file:
    state: directory
    path: "{{ moodle_base }}"
    owner: "{{ apache_user }}"    # www-data
    group: "{{ apache_user }}"
    mode: u+rw,g+r,o+r    # '0755' forced executable bits on files
    recurse: yes

- name: Create dir {{ content_base }}/dbdata/moodle owned by {{ apache_user }}
  file:
    state: directory
    path: "{{ content_base }}/dbdata/moodle"    # /library
    owner: "{{ apache_user }}"

- name: Create dir {{ moodle_data }} ({{ apache_user }}:{{ apache_user }}, '0770')
  file:
    state: directory
    path: "{{ moodle_data }}"    # /library/moodle
    owner: "{{ apache_user }}"
    group: "{{ apache_user }}"
    #mode: '0770'    # Regardless, permissions end up as: drwxrwsrwx

#- name: Remove stock /etc/{{ apache_conf_dir }}/moodle.conf
#  file:
#    path: "/etc/{{ apache_conf_dir }}/moodle.conf"    # apache2/sites-available
#    state: absent

# 2021-02-01: Not nec if we can hopefully migrate from Apache to NGINX soon!
#- name: Install /etc/{{ apache_conf_dir }}/022-moodle.conf from template
#  template:
#    src: 022-moodle.j2
#    dest: "/etc/{{ apache_conf_dir }}/022-moodle.conf"

# roles/postgresql/templates/postgresql-iiab.service WAS INSTALLED HERE:
# /etc/systemd/system/postgresql-iiab.service
- name: Start 'postgresql-iiab' systemd service, to configure Moodle's DB
  systemd:
    name: postgresql-iiab
    state: started

- name: Create PostgreSQL db user Admin/changeme
  postgresql_user:
    name: Admin
    password: changeme
    encrypted: yes   # Required by PostgreSQL 10+ e.g. Ubuntu 18.04's PostgreSQL 10.3+, see https://github.com/iiab/iiab/issues/759
    role_attr_flags: NOSUPERUSER,NOCREATEROLE,NOCREATEDB
    state: present
  become: yes
  become_user: postgres

- name: 'Create database: {{ moodle_database_name }}'
  postgresql_db:
    name: "{{ moodle_database_name }}"
    encoding: utf8
    owner: Admin
    template: template1
    state: present
  become: yes
  become_user: postgres

- name: Install {{ moodle_base }}/moodle_installer from template ('0755')
  template:
    src: moodle_installer
    dest: "{{ moodle_base }}"
    mode: '0755'

- name: (Re)Start 'postgresql-iiab' systemd service
  systemd:
    name: postgresql-iiab
    state: restarted
    #enabled: yes    # Service ends up enabled regardless

#- name: (Re)Start '{{ apache_service }}' systemd service
#  systemd:
#    name: "{{ apache_service }}"
#    state: restarted

- name: Does {{ moodle_base }}/config.php exist?
  stat:
    path: "{{ moodle_base }}/config.php"
  register: config

- name: Execute {{ moodle_base }}/moodle_installer -- REQUIRES 'max_input_vars = 5000' (or higher) in /etc/php/{{ php_version }}/cli/php.ini with PHP 8+ (as set up by www_options/tasks/main.yml) -- WHEREAS Moodle uses /etc/php/{{ php_version }}/{{ apache_service }}/php.ini or /etc/php/{{ php_version }}/fpm/php.ini during regular operation
  shell: "{{ moodle_base }}/moodle_installer"
  when: config.stat.exists is defined and not config.stat.exists

# 2021-02-01: Let's stick with Moodle's default (640)
#- name: Make {{ moodle_base }}/config.php readable, with permission '0644'
#  #command: chown -R {{ apache_user }} {{ moodle_base }}
#  file:
#    path: "{{ moodle_base }}/config.php"    # /opt/iiab/moodle
#    mode: '0644'


# RECORD Moodle AS INSTALLED

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

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