---
- name: Configure Nginx for Subdomain
  hosts: servers
  become: true

  tasks:
    - name: Create Nginx sites-available directory if it doesn't exist
      file:
        path: /etc/nginx/sites-available
        state: directory
        mode: '0755'
      become: yes

    - name: Create Nginx sites-enabled directory if it doesn't exist
      file:
        path: /etc/nginx/sites-enabled
        state: directory
        mode: '0755'
      become: yes

    - name: Create empty pg.usmidsap02 file if it doesn't exist
      file:
        path: /etc/nginx/sites-available/pg.usmidsap02
        state: touch
        mode: '0644'
      become: yes

    - name: Create Nginx configuration for the subdomain
      become: yes
      blockinfile:
        path: /etc/nginx/sites-available/pg.usmidsap02
        block: |
          server {
            listen 5432;
            server_name pg.usmidsap02;
            location / {
              proxy_pass http://127.0.0.1:5432;
              proxy_set_header Host $host;
              proxy_set_header X-Real-IP $remote_addr;
              proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            }
          }
        marker: "# {mark} ANSIBLE MANAGED BLOCK - pg.usmidsap02"

    - name: Create a symbolic link to enable the site
      become: yes
      file:
        src: /etc/nginx/sites-available/pg.usmidsap02
        dest: /etc/nginx/sites-enabled/pg.usmidsap02
        state: link

    - name: Check Nginx configuration
      become: yes
      command: nginx -t
      register: nginx_test
      ignore_errors: true

    - name: Reload Nginx if configuration is valid
      become: yes
      systemd:
        name: nginx
        state: reloaded
      when: nginx_test.rc == 0