---
- name: Calculate db_mem as a share of system RAM
  set_fact:
    fulcrum_db_mem_mb: "{{ (ansible_memtotal_mb | float * fulcrum_db_mem_percent) | int }}"
  when: fulcrum_db_mem_mb_override | string | length == 0

- name: Use the explicit db_mem override
  set_fact:
    fulcrum_db_mem_mb: "{{ fulcrum_db_mem_mb_override }}"
  when: fulcrum_db_mem_mb_override | string | length > 0
  changed_when: false

- name: Display calculated db_mem value
  debug:
    msg: "Setting db_mem to {{ fulcrum_db_mem_mb }} MB ({{ (fulcrum_db_mem_percent * 100) | int }}% of {{ ansible_memtotal_mb }} MB total RAM)"

- name: Display Fulcrum version to install
  debug:
    msg: "Installing Fulcrum version {{ fulcrum_version }}"

- name: Install required packages
  apt:
    name:
      - curl
      - wget
      - openssl
    state: present
    update_cache: yes

- name: Create fulcrum group
  group:
    name: "{{ fulcrum_group }}"
    system: yes
    state: present

- name: Create fulcrum user
  user:
    name: "{{ fulcrum_user }}"
    group: "{{ fulcrum_group }}"
    system: yes
    shell: /usr/sbin/nologin
    home: /home/{{ fulcrum_user }}
    create_home: yes
    state: present

- name: Create Fulcrum database directory (heavy data on special mount)
  file:
    path: "{{ fulcrum_db_dir }}"
    state: directory
    owner: "{{ fulcrum_user }}"
    group: "{{ fulcrum_group }}"
    mode: '0755'

- name: Create Fulcrum config directory
  file:
    path: "{{ fulcrum_config_dir }}"
    state: directory
    owner: root
    group: "{{ fulcrum_group }}"
    mode: '0755'

- name: Create Fulcrum lib directory (for banner and other data files)
  file:
    path: "{{ fulcrum_lib_dir }}"
    state: directory
    owner: "{{ fulcrum_user }}"
    group: "{{ fulcrum_group }}"
    mode: '0755'

# ===========================================
# SSL Certificate Generation
# ===========================================
- name: Check if SSL certificate already exists
  stat:
    path: "{{ fulcrum_ssl_cert_path }}"
  register: fulcrum_ssl_cert_exists
  when: fulcrum_ssl_enabled | default(false)

- name: Generate self-signed SSL certificate for Fulcrum
  command: >
    openssl req -x509 -newkey rsa:4096
    -keyout {{ fulcrum_ssl_key_path }}
    -out {{ fulcrum_ssl_cert_path }}
    -sha256 -days {{ fulcrum_ssl_cert_days }}
    -nodes
    -subj "/C=XX/ST=Decentralized/L=Bitcoin/O=Fulcrum/OU=Electrum/CN=fulcrum.local"
  args:
    creates: "{{ fulcrum_ssl_cert_path }}"
  when: fulcrum_ssl_enabled | default(false)
  notify: Restart fulcrum

- name: Set SSL certificate permissions
  file:
    path: "{{ fulcrum_ssl_cert_path }}"
    owner: "{{ fulcrum_user }}"
    group: "{{ fulcrum_group }}"
    mode: '0644'
  when: fulcrum_ssl_enabled | default(false) and fulcrum_ssl_cert_exists.stat.exists | default(false) or fulcrum_ssl_enabled | default(false)

- name: Set SSL key permissions
  file:
    path: "{{ fulcrum_ssl_key_path }}"
    owner: "{{ fulcrum_user }}"
    group: "{{ fulcrum_group }}"
    mode: '0600'
  when: fulcrum_ssl_enabled | default(false)

- name: Check if Fulcrum binary already exists
  stat:
    path: "{{ fulcrum_binary_path }}"
  register: fulcrum_binary_exists
  changed_when: false

- name: Download Fulcrum binary tarball
  get_url:
    url: "https://github.com/cculianu/Fulcrum/releases/download/v{{ fulcrum_version }}/Fulcrum-{{ fulcrum_version }}-x86_64-linux.tar.gz"
    dest: "/tmp/Fulcrum-{{ fulcrum_version }}-x86_64-linux.tar.gz"
    mode: '0644'
  when: not fulcrum_binary_exists.stat.exists

- name: Extract Fulcrum binary
  unarchive:
    src: "/tmp/Fulcrum-{{ fulcrum_version }}-x86_64-linux.tar.gz"
    dest: "/tmp"
    remote_src: yes
  when: not fulcrum_binary_exists.stat.exists

- name: Install Fulcrum binary
  copy:
    src: "/tmp/Fulcrum-{{ fulcrum_version }}-x86_64-linux/Fulcrum"
    dest: "{{ fulcrum_binary_path }}"
    owner: root
    group: root
    mode: '0755'
    remote_src: yes
  when: not fulcrum_binary_exists.stat.exists

- name: Verify Fulcrum binary installation
  command: "{{ fulcrum_binary_path }} --version"
  register: fulcrum_version_check
  changed_when: false

- name: Display Fulcrum version
  debug:
    msg: "{{ fulcrum_version_check.stdout_lines }}"