- name: Install PostgreSQL packages
  apt:
    name:
      - postgresql
      - postgresql-contrib
    update_cache: yes

# --- Dynamiczne wykrywanie wersji PostgreSQL ---
- name: Detect installed PostgreSQL version
  find:
    paths: /etc/postgresql
    file_type: directory
    depth: 1
  register: pg_version_dirs

- name: Set PostgreSQL version fact
  set_fact:
    pg_version: "{{ pg_version_dirs.files | map(attribute='path') | map('basename') | sort | last }}"

- name: Detect cluster name
  shell: "pg_lsclusters --no-header | awk '{print $2}' | head -n1"
  register: pg_cluster_name
  changed_when: false

- set_fact:
    pg_cluster: "{{ pg_cluster_name.stdout }}"


- name: Define PostgreSQL cluster path
  set_fact:
    pg_cluster_path: "/etc/postgresql/{{ pg_version }}/{{ pg_cluster }}"

- name: Ensure cluster config directory exists
  file:
    path: "{{ pg_cluster_path }}"
    state: directory
    owner: postgres
    group: postgres
    mode: '0700'

# --- Stop cluster before config ---
- name: Stop PostgreSQL cluster
  shell: "pg_ctlcluster {{ pg_version }} {{ pg_cluster }} stop"
  ignore_errors: true

# --- Configure PostgreSQL ---
- name: postgresql.conf
  template:
    src: postgresql.conf.j2
    dest: "{{ pg_cluster_path }}/postgresql.conf"

- name: pg_hba.conf
  template:
    src: pg_hba.conf.j2
    dest: "{{ pg_cluster_path }}/pg_hba.conf"

# --- Ensure cluster exists and started ---
- name: Ensure PostgreSQL cluster exists
  shell: |
    if [ ! -d "/var/lib/postgresql/{{ pg_version }}/{{ pg_cluster }}" ]; then
      pg_createcluster {{ pg_version }} {{ pg_cluster }} --start
    else
      pg_ctlcluster {{ pg_version }} {{ pg_cluster }} start
    fi

# --- Wait for socket to be ready ---
- name: Wait for PostgreSQL socket
  wait_for:
    path: "/var/run/postgresql/{{ pg_version }}-{{ pg_cluster }}/.s.PGSQL.5432"
    timeout: 60

# --- Install Python PostgreSQL libraries ---
- name: Install python postgres libraries
  apt:
    name:
      - python3-psycopg2
    state: present
    update_cache: yes