feat: initial installation role for pihole

tasks/main.yml

@@ -0,0 +1,62 @@
+---
+- name: Assert Debian-based distribution
+  ansible.builtin.assert:
+    that:
+      - ansible_os_family == 'Debian'
+    fail_msg: "ansible-role-pihole only supports Debian-based distributions"
+
+- name: Install Pi-hole prerequisites
+  ansible.builtin.apt:
+    name:
+      - curl
+      - git
+      - dhcpcd5
+    state: present
+    update_cache: true
+  become: true
+
+- name: Create /etc/pihole directory
+  ansible.builtin.file:
+    path: /etc/pihole
+    state: directory
+    mode: '0755'
+  become: true
+
+- name: Write setupVars.conf for unattended installation
+  ansible.builtin.copy:
+    content: |
+      PIHOLE_INTERFACE={{ pihole_interface }}
+      IPV4_ADDRESS={{ pihole_ipv4_address }}
+      PIHOLE_DNS_1={{ pihole_dns_1 }}
+      PIHOLE_DNS_2={{ pihole_dns_2 }}
+      QUERY_LOGGING={{ pihole_query_logging }}
+      INSTALL_WEB_SERVER={{ pihole_install_web_server }}
+      INSTALL_WEB_INTERFACE={{ pihole_install_web_interface }}
+      LIGHTTPD_ENABLED={{ pihole_lighttpd_enabled }}
+      CACHE_SIZE={{ pihole_cache_size }}
+      DNS_FLUSHED_ON_RESTART=true
+      DNSSEC=false
+      TEMPERATUREUNIT=C
+      WEBUIBOXEDLAYOUT=traditional
+      API_PRIVACY_MODE=false
+      BLOCKING_ENABLED=true
+    dest: /etc/pihole/setupVars.conf
+    mode: '0644'
+  become: true
+
+- name: Download Pi-hole installer
+  ansible.builtin.get_url:
+    url: https://install.pi-hole.net
+    dest: /tmp/pihole-installer.sh
+    mode: '0755'
+
+- name: Run Pi-hole unattended installer
+  ansible.builtin.command:
+    cmd: /tmp/pihole-installer.sh --unattended
+    creates: /usr/local/bin/pihole
+  become: true
+
+- name: Remove Pi-hole installer script
+  ansible.builtin.file:
+    path: /tmp/pihole-installer.sh
+    state: absent