system.yaml

---
- hosts: localhost
  become: true
  vars:
    source_dir: "/home/pi/raspberrypi-iot" # replace with your source directory

  tasks:
    - name: Install base packages
      apt:
          name: "{{ packages }}"
      vars:
        packages:
          - dnsmasq
          - hostapd
          - nginx
          - python3-pip          
          - python3-venv

    ## Wifi access point configuration ##
    # this will not overwrite your existing files
    - name: Copy wpa_supplicant files
      copy:
        src: "{{ source_dir }}/system/etc/wpa_supplicant/{{ item }}"
        dest: /etc/wpa_supplicant/
        force: no
        remote_src: yes
      with_items:
        - 'wpa_supplicant-wlan1.conf'
        - 'wpa_supplicant.conf'

    - name: Make wpa_supplicant files owned by pi
      file:
        path: '/etc/wpa_supplicant'
        owner: pi
        recurse: yes

    # hostapd became masked, see https://github.com/raspberrypi/documentation/issues/1018
    - name: Stop hostapd and dnsmasq for now
      systemd:
        state: stopped
        name: "{{ item }}"
        masked: 'no'
      with_items:
        - hostapd
        - dnsmasq

    - name: Copy configuration files into /etc
      copy:
        src: "{{ source_dir }}/system/etc/{{ item }}"
        dest: /etc/
        remote_src: yes
      with_items:
        - dhcpcd.conf
        - dnsmasq.conf
        - sysctl.conf
        - iptables.ipv4.nat
        - rc.local
        - hosts
        - hostname

    - name: Configure hostapd
      copy:
        src: '{{ source_dir }}/system/etc/hostapd/hostapd.conf'
        dest: /etc/hostapd/hostapd.conf
        remote_src: yes

    - name: Point system to hostapd configuration file
      copy:
        src: '{{ source_dir }}/system/etc/default/hostapd'
        dest: /etc/default/hostapd
        remote_src: yes

    - name: Restart services
      systemd:
        name: "{{ item }}"
        state: restarted
      with_items:
        - dhcpcd
        - hostapd
        - dnsmasq

    ## Install frontend and backend ##
    - name: Copy nginx configuration file
      template: src={{ source_dir }}/system/etc/nginx/sites-available/default.j2 dest=/etc/nginx/sites-available/default

    - name: Create a virtual environment for backend dependencies
      pip:
        requirements: '{{ source_dir }}/backend/requirements.txt'
        virtualenv: '{{ source_dir }}/backend/venv'
        virtualenv_command: /usr/bin/python3 -m venv

    - name: Install backend service
      template:
        src: '{{ source_dir }}/system/etc/systemd/system/rpi-iot-backend.service.j2'
        dest: /etc/systemd/system/rpi-iot-backend.service

    - name: Start and enable backend service
      systemd:
        state: restarted
        enabled: yes
        name: 'rpi-iot-backend'
        daemon_reload: yes

    - name: Reload nginx
      systemd:
        state: restarted
        name: nginx

    - name: Make sure hostapd is enabled at the end
      systemd:
        name: hostapd
        state: started
        enabled: yes