---
- name: Create Stalwart group
  ansible.builtin.group:
    name: "{{ stalwart_system_group }}"
    system: true

- name: Create Stalwart user
  ansible.builtin.user:
    name: "{{ stalwart_system_user }}"
    group: "{{ stalwart_system_group }}"
    create_home: false
    home: "{{ stalwart_install_path }}"
    shell: "/usr/sbin/nologin"
    system: true

- name: Create Ansible remote_tmp for stalwart user
  ansible.builtin.file:
    path: "{{ stalwart_install_path }}/.ansible/tmp"
    state: directory
    owner: "{{ stalwart_system_user }}"
    group: "{{ stalwart_system_group }}"
    mode: "0755"

- name: Create Stalwart database user
  become: true
  become_user: postgres
  community.postgresql.postgresql_user:
    name: "{{ stalwart_db_user }}"
    password: "{{ stalwart_db_password }}"
  when: stalwart_directory_type == "sql"

- name: Create Stalwart database
  become: true
  become_user: postgres
  community.postgresql.postgresql_db:
    name: "{{ stalwart_db_name }}"
    owner: "{{ stalwart_db_user }}"
  when: stalwart_directory_type == "sql"

- name: Deploy database schema
  ansible.builtin.copy:
    src: schema.sql
    dest: /tmp/stalwart-schema.sql
    mode: "0644"
  when: stalwart_directory_type == "sql"

- name: Apply database schema
  become: true
  become_user: postgres
  ansible.builtin.command:
    cmd: psql -d {{ stalwart_db_name }} -f /tmp/stalwart-schema.sql
  changed_when: false
  when: stalwart_directory_type == "sql"

- name: Check if already installed
  ansible.builtin.stat:
    path: "{{ stalwart_executable_path }}"
  register: stalwart_exec

- name: Get version if stalwart is installed
  when: stalwart_exec.stat.exists
  block:
    - name: Get version
      ansible.builtin.command: "{{ stalwart_executable_path }} -V"
      failed_when: false
      changed_when: false
      check_mode: false
      register: stalwart_output

    - name: Set current installed version
      ansible.builtin.set_fact:
        stalwart_current_version: "{{ stalwart_output.stdout_lines[0] }}"

- name: Check if config exists
  ansible.builtin.stat:
    path: "{{ stalwart_config_file_path }}"
  register: stalwart_config_file_st

- name: Preserve admin password salt from existing config
  when: stalwart_config_file_st.stat.exists
  block:
    - name: Get config file content
      ansible.builtin.slurp:
        src: "{{ stalwart_config_file_path }}"
      register: config_file_content

    - name: Get existing password hash
      ansible.builtin.set_fact:
        hash_stored: "{{ config_file_content['content'] | b64decode | regex_search('(\\n|^)(secret|authentication\\.fallback-admin\\.secret) = \"(.*)\"\\n', '\\3') }}"

    - name: Get existing salt
      ansible.builtin.set_fact:
        stalwart_fallback_admin_password_salt: "{{ (hash_stored[0] | split('$'))[2] }}"

- name: Create salt if it does not exist
  ansible.builtin.set_fact:
    stalwart_fallback_admin_password_salt: "{{ lookup('password', '/dev/null length=16 chars=ascii_letters,digits') }}"
  when: stalwart_fallback_admin_password_salt is undefined