---
# Run this with:
#  ansible-playbook -i deploy/ansible/inventory.ini --become --ask-become-pass deploy/ansible/install.yml

# Other useful commands:
# ansible all -i [HOST], -u user -m ping
# ansible all -i [HOST], -u user -a /bin/date
# scp -3 -v [OLDHOST]:backup/backup.gz [HOST]:tmp/

# /etc/apache2 uses OS defaults aside from "site-available", "sites-enabled" and
# "conservancy.conf".
#
# Current site does not use "django.contrib.staticfiles", so no need to run
# `collectstatic`.
#
# SQLite database lives at /var/lib/www/database.
#
# Disabled Rackspace CDN videos.
#
# No mail as yet.
#
# No etckeeper as yet.
#
# a2enmod ssl rewrite

 - name: Configure web server
   hosts: web
   # remote_user:
   # become_user:
   # become_method:

   tasks:
     - name: Install unattended upgrades
       apt:
         name: unattended-upgrades

     - name: Configure unattended upgrades
       copy:
         src: 20auto-upgrades
         dest: /etc/apt/apt.conf.d/20auto-upgrades

     - name: Install Apache
       apt:
         name: apache2,libapache2-mod-wsgi-py3

     - name: Install Postfix
       apt:
         name: postfix,mailutils

     - name: Install Certbot
       apt:
         name: certbot, python3-certbot-apache

     - name: Install Python dependencies
       apt:
         name: python3-django,python3-bs4,python3-html5lib,python3-django-countries

     - name: Install Python essentials
       apt:
         name: python3-venv,python3-pip,python3-wheel

     - name: Install Python build dependencies
       apt:
         name: build-essential,python3-dev,libffi-dev

     - name: Security settings
       apt:
         name: fail2ban

     - name: Disable SSH password authentication
       lineinfile:
         path: /etc/ssh/sshd_config
         regexp: '^#?PasswordAuthentication '
         line: 'PasswordAuthentication no'
       notify:
         - restart sshd

     - name: Install utilities
       apt:
         name: tmux,curl,git,magic-wormhole,htop,rsync

     - name: Create the project directory
       file:
         path: /var/www/website
         state: directory
         owner: www-data
         group: www-data
         mode: '0755'

     - name: Create the database directory
       file:
         path: /var/lib/www/database
         state: directory
         owner: www-data
         group: www-data
         mode: '0755'

     - name: Git checkout
       ansible.builtin.git:
         repo: 'https://k.sfconservancy.org/website'
         dest: /var/www/website
         version: master

     - name: Create static dir
       file:
         path: /var/www/website/conservancy/static
         state: directory
         owner: www-data
         group: www-data
         mode: '0755'

     - name: Install iptables  # May need kernel reload/reboot
       apt:
         name: iptables,iptables-netflow-dkms

     - name: Flush existing firewall rules
       iptables:
         flush: true

     - name: Firewall rule - allow all loopback traffic
       iptables:
         action: append
         chain: INPUT
         in_interface: lo
         jump: ACCEPT

     - name: Firewall rule - allow established connections
       iptables:
         chain: INPUT
         ctstate: ESTABLISHED,RELATED
         jump: ACCEPT

     - name: Firewall rule - allow port ping traffic
       iptables:
         chain: INPUT
         jump: ACCEPT
         protocol: icmp

     - name: Firewall rule - allow port 22/SSH traffic
       iptables:
         chain: INPUT
         destination_port: '22'
         jump: ACCEPT
         protocol: tcp

     - name: Firewall rule - allow port 80/HTTP traffic
       iptables:
         chain: INPUT
         destination_port: '80'
         jump: ACCEPT
         protocol: tcp

     - name: Firewall rule - allow port 443/HTTPS traffic
       iptables:
         chain: INPUT
         destination_port: '443'
         jump: ACCEPT
         protocol: tcp

     - name: Firewall rule - drop any traffic without rule
       iptables:
         chain: INPUT
         jump: DROP

     - name: Flush existing firewall rules
       iptables:
         ip_version: ipv6
         flush: true

     - name: Firewall rule - allow all loopback traffic v6
       iptables:
         ip_version: ipv6
         action: append
         chain: INPUT
         in_interface: lo
         jump: ACCEPT

     - name: Firewall rule - allow established connections v6
       iptables:
         ip_version: ipv6
         chain: INPUT
         ctstate: ESTABLISHED,RELATED
         jump: ACCEPT

     - name: Firewall rule - allow port ping traffic v6
       iptables:
         ip_version: ipv6
         chain: INPUT
         jump: ACCEPT
         protocol: icmp

     - name: Firewall rule - allow port 22/SSH traffic v6
       iptables:
         ip_version: ipv6
         chain: INPUT
         destination_port: '22'
         jump: ACCEPT
         protocol: tcp

     - name: Firewall rule - allow port 80/HTTP traffic v6
       iptables:
         ip_version: ipv6
         chain: INPUT
         destination_port: '80'
         jump: ACCEPT
         protocol: tcp

     - name: Firewall rule - allow port 443/HTTPS traffic v6
       iptables:
         ip_version: ipv6
         chain: INPUT
         destination_port: '443'
         jump: ACCEPT
         protocol: tcp

     - name: Firewall rule - drop any traffic without rule v6
       iptables:
         ip_version: ipv6
         chain: INPUT
         jump: DROP

   handlers:
     - name: restart sshd
       service:
         name: ssh
         state: reloaded