---

- name: builder3
  hosts: builder3.hamburg.freifunk.net
  tasks:
    - name: Common system setup
      block:
        - name: Update apt cache
          apt:
            update_cache: yes

        - name: Install debconf
          package:
            name:
              - debconf
              - debconf-utils
            state: present

        - name: Preseed some configuration
          with_items:
            - name: unattended-upgrades
              question: unattended-upgrades/enable_auto_updates
              value: "true"
              vtype: boolean
          debconf:
            name: "{{ item.name }}"
            question: "{{ item.question }}"
            value: "{{ item.value }}"
            vtype: "{{ item.vtype }}"

        - name: Install default packages
          package:
            name:
              - htop
              - screen
              - unattended-upgrades
            state: present

        - name: Remove os-prober
          package:
            name: os-prober
            state: absent

        - name: Configure screen
          copy:
            dest: /etc/screenrc
            backup: yes
            owner: root
            group: root
            mode: "0644"
            content: |
              hardstatus alwayslastline
              hardstatus string '%{= kG}[ %{G}%H %{g}][%= %{= kw}%?%-Lw%?%{r}(%{W}%n*%f%t%?(%u)%?%{r})%{w}%?%+Lw%?%?%= %{g}][%{B} %m-%d %{W}%c:%s %{g}]'
              defscrollback 99999


    - name: Install ZFS
      block:
        - name: Prepare for ZFS installation
          blockinfile:
            backup: yes
            create: yes
            path: /etc/apt/sources.d/backports.list
            marker: "# {mark} backports archive"
            mode: "0644"
            owner: root
            group: root
            block: |
              deb http://deb.debian.org/debian {{ ansible_distribution_release }}-backports main contrib non-free

        - name: Update apt cache
          apt:
            update_cache: yes

        - name: Install ZFS packages
          register: zfs_packages
          package:
            name:
              - linux-headers-amd64
              - zfsutils-linux
              - zfs-dkms
              - zfs-zed

        - name: Ensure zfs modules are loaded on boot
          lineinfile:
            path: /etc/modules
            line: zfs
            regexp: zfs

        - name: Reboot after ZFS install
          when: zfs_packages.changed
          reboot:

    - name: zpool initialization
      block:
        - name: try to import zpool
          register: try_import_zpool
          failed_when: false
          changed_when: try_import_zpool.rc == 0
          command:
            cmd: zpool import dpool

        - name: Check if zpool is imported
          register: zpool_import_status
          failed_when: false
          changed_when: false
          check_mode: false
          command:
            cmd: zpool list dpool

        - name: Create zpool if not imported
          when: (zpool_import_status.rc > 0)
          command:
            cmd: zpool create -o ashift=12 -o autotrim=on -O mountpoint=legacy -O dedup=on -O compression=on dpool mirror /dev/sda4 /dev/sdb4

    - name: Create zfs datasets
      with_items:
        - dataset: dpool
          properties:
            org.debian:periodic-trim: enable
        - dataset: dpool/build
          properties:
            mountpoint: /build
            com.sun:auto-snapshot: false
        - dataset: dpool/firmware
          properties:
            mountpoint: /firmware
            com.sun:auto-snapshot: true
            com.sun:auto-snapshot:frequent: false
            com.sun:auto-snapshot:hourly: false
            com.sun:auto-snapshot:weekly: false
            com.sun:auto-snapshot:monthly: false
        - dataset: dpool/mirror
          properties:
            mountpoint: /mirror
            com.sun:auto-snapshot: true
            com.sun:auto-snapshot:frequent: false
            com.sun:auto-snapshot:hourly: false
            com.sun:auto-snapshot:weekly: false
            com.sun:auto-snapshot:monthly: false
      zfs:
        state: present
        name: "{{ item.dataset }}"
        extra_zfs_properties: "{{ item.properties }}"


    - name: Install software required to build gluon
      package:
        state: present
        name:
          - build-essential
          - gawk
          - git
          - libncurses-dev
          - libssl-dev
          - libz-dev
          - python2
          - python3
          - qemu-utils
          - subversion
          - time
          - unzip
          - wget

    - name: Create build user
      user:
        name: gluon
        state: present
        password: "!"
        shell: /bin/bash

    - name: Set permissions on directories
      with_items:
        - /build
        - /firmware
        - /mirror
      file:
        path: "{{ item }}"
        owner: gluon
        mode: "0755"

    - name: Create symlinks in gluon home
      with_items:
        - /build
        - /firmware
        - /mirror
      file:
        path: "/home/gluon/{{ item | basename }}"
        src: "{{ item }}"
        state: link


    - name: Configure webserver for builder3
      block:
        - name: Install nginx
          package:
            name:
              - nginx-light
              - libnginx-mod-http-fancyindex
              - certbot
              - python3-certbot-nginx
            state: present

        - name: Nginx default config
          template:
            dest: /etc/nginx/sites-available/default
            src: nginx.default
            backup: yes
            force: yes
            mode: "0400"
            owner: root
            group: root

        - name: Check for certbot certificates
          register: certbot_status
          stat:
            path: /etc/letsencrypt/live

        - name: Initialize certificates
          when: not certbot_status.stat.exists
          block:
            - name: Ensure nginx is stopped
              service:
                name: nginx
                state: stopped

            - name: Initialize certbot certificates standalone
              command:
                cmd: certbot -n --agree-tos --email certbot-test@danielfrank.net certonly --domains builder3.hamburg.freifunk.net --standalone

        - name: Setup cronjob for certbot
          cron:
            name: certbot auto renewal
            job: certbot renew --webroot --post-hook 'systemctl start nginx' --disable-renew-updates
            minute: "7"
            hour: "1"
            day: "*"
            month: "*"
            weekday: "*"

        - name: Ensure nginx is running
          service:
            name: nginx
            state: started