---
- name: Preparing pi4 for Netbooting.
  hosts: all
  become: yes

  vars:
    hostname: euryale
    synology_ip: 192.168.1.87

  tasks:
  - name: Setting new hostname...
    hostname:
        name: "{{ hostname }}"

  - name: Updating /etc/hosts file with new hostname...
    lineinfile:
        dest: /etc/hosts
        regexp: '127.0.0.1.*'
        line: '127.0.0.1 "{{ hostname }}"'
        state: present

  - name: Updating /etc/hostname file with new hostname...
    lineinfile:
        dest: /etc/hostname
        line: '"{{ hostname }}"'
        state: present
        
  - name: Rebooting system to apply changes...
    reboot:
        reboot_timeout:300
    when: ansible_os_family == 'Debian'

  - name: Updating package index...
    apt:
        update_cache: yes
  
  - name: Installing apts...
    apt:
        name: "{{ packages }}"
        state: present
    vars:
        packages:
        - nfs-common
        - rpi-eeprom
        
  - name: Creating root mount directory on the pi...
    file:
        path: /nfs/"{{ hostname }}"
        state: directory
        owner: root
        group: root
        mode: 0755

  - name: Mounting root NFS share...
    mount:
        path: /nfs/"{{ hostname }}"
        src: "{{ synology_ip }}":/volume1/rootmnt/"{{ hostname }}"
        fstype: nfs
        opts: rw,proto=tcp,port=2049,all_squash,anonuid=1001,anongid=1001

  - name: Copying OS files to synology...
    synchronize:
        src: /
        dest: /nfs/"{{ hostname }}"/
        archive: yes
        compress: yes
        delete: yes
        progress: yes
        rsync_opts:
            - "--exclude /nfs"

  - name: Creating boot mount directory on the pi...
    file:
        path: /nfs/bootmnt
        state: directory
        owner: root
        group: root
        mode: 0755

  - name: Mounting boot NFS share...
    mount:
        path: /nfs/bootmnt
        src: "{{ synology_ip }}":/volume1/bootmnt
        fstype: nfs
        opts: rw,proto=tcp,port=2049,all_squash,anonuid=1001,anongid=1001

  - name: Grabbing pi4's serial number...
    shell: vcgencmd otp_dump | grep 28: | sed s/.*://g
    register: otp_value

  - name: Setting serial number into fact...
    set_fact:
        otp: "{{ otp_value.stdout }}"

  - name: Creating directory based on serial number...
    file:
        path: /nfs/bootmnt/"{{ otp }}"
        state: directory
        owner: root
        group: root
        mode: 0755

  - name: Copying boot files over to synology...
    copy:
        src: /boot/
        dest: /nfs/bootmnt/"{{ otp }}"
        owner: root
        group: root
        mode: 0755
        recurse: yes

  - name: creating backup of fstab file...
    copy:
      src: /etc/fstab
      dest: /etc/fstab.bak

  - name: updating fstab file...
    lineinfile:
      path: /etc/fstab
      line: |
        proc            /proc           proc    defaults          0       0
        "{{ synology_ip }}":/volume1/bootmnt/"{{ otp }}" /boot nfs defaults,vers=3,proto=tcp,bind 0 0        
      state: present

  - name: creating back of cmdline.txt file...
    copy:
      src: /nfs/bootmnt/"{{ otp }}"/cmdline.txt
      dest: /nfs/bootmnt/"{{ otp }}"/cmdline.txt.bak

  - name: updating cmdline.txt file...
    lineinfile:
      path: /nfs/bootmnt/"{{ otp }}"/cmdline.txt
      line: |
                console=serial0,115200 console=tty1 root=/dev/nfs nfsroot="{{ synology_ip }}:/volume1/rootmnt/"{{ hostname }}",vers=3 rw ip=dhcp elevator=deadline rootwait

  - name: create ssh file so we can do dat...
    file:
      path: /nfs/bootmnt/"{{ otp }}"/boot/ssh
      state: touch
      owner: root
      group: root
      mode: 0600

  - name: Removing pieeprom-new.bin before making new one...
      file:
        path: ~/tmp/pieeprom-new.bin
        state: absent
  
  - name: Copy firmware file
      copy:
        src: /lib/firmware/raspberrypi/bootloader/stable/pieeprom-2022-03-10.bin
        dest: ~/tmp/pieeprom.bin
  
  - name: Creating boot configuration file...
      lineinfile:
        path: /nfs/bootmnt/"{{ otp }}"/bootconf.txt
        line: |
          [all]
          BOOT_UART=0
          WAKE_ON_GPIO=1
          POWER_OFF_ON_HALT=0
          DHCP_TIMEOUT=45000
          DHCP_REQ_TIMEOUT=4000
          TFTP_FILE_TIMEOUT=30000
          TFTP_IP=192.168.1.87
          TFTP_PREFIX=0
          ENABLE_SELF_UPDATE=1
          DISABLE_HDMI=0
          BOOT_ORDER=0x241
          SD_CARD_MAX_RETRIES=3
          NET_BOOT_MAX_RETRIES=5          

    - name: Generating new eeprom binary...
      shell: rpi-eeprom-config --out pieeprom-new.bin --config bootconf.txt pieeprom.bin

    - name: Writing new eeprom binary....
      shell: rpi-eeprom-update -d -f ./pieeprom-new.bin

    - name: Rebooting the Pi4 (leave sd card in for the last time)
      reboot:
        reboot_timeout: 300