---
# =============================================================================
# APPLY PLAYBOOK
# Purpose: Deploy files from deploy-config.yml to target servers
# Usage: ansible-playbook apply.yml
# Note: Uses Ansible's register mechanism to capture deployed files
# =============================================================================

- name: Deploy files to servers
  hosts: all
  become: true
  vars_files:
    - ../deploy-config.yml

  tasks:
    # ─────────────────────────────────────────────────────────────────────
    # TASK 1: Deploy each configured file/folder
    # Loops through deploy_items and copies each to destination
    # Registers which files were successfully deployed
    # ─────────────────────────────────────────────────────────────────────
    - name: Deploy configured files
      copy:
        src: "{{ playbook_dir }}/{{ '../../' + item.src }}"
        dest: "{{ item.dest }}"
        owner: "{{ item.owner | default('root') }}"
        group: "{{ item.group | default('root') }}"
        mode: "{{ item.mode | default('0644') }}"
        backup: yes
      register: deploy_results
      loop: "{{ deploy_items }}"
      loop_control:
        loop_var: item
        label: "{{ item.name }}"

    # ─────────────────────────────────────────────────────────────────────
    # TASK 2: Extract deployed file information
    # Builds a list of deployed files from the copy task results
    # ─────────────────────────────────────────────────────────────────────
    - name: Extract deployed file information
      set_fact:
        deployed_file_list: |
          [
          {%- for result in deploy_results.results -%}
            {
              "name": "{{ result.item.name }}",
              "src": "{{ result.item.src }}",
              "dest": "{{ result.item.dest }}",
              "changed": {{ result.changed | lower }}
            }{{ "," if not loop.last else "" }}
          {%- endfor -%}
          ]

    # ─────────────────────────────────────────────────────────────────────
    # TASK 3: Save deployed files list to a temporary file
    # This file will be read by the GitOps status script
    # ─────────────────────────────────────────────────────────────────────
    - name: Save deployed files list
      copy:
        content: "{{ deployed_file_list }}"
        dest: "/tmp/deployed_files_{{ inventory_hostname }}.json"
        owner: root
        group: root
        mode: "0644"

    # ─────────────────────────────────────────────────────────────────────
    # TASK 4: Confirm deployment success
    # Displays summary of deployed files
    # ─────────────────────────────────────────────────────────────────────
    - name: Display deployment summary
      debug:
        msg: "✅ Deployed {{ deploy_results.results | length }} file(s) to {{ inventory_hostname }}"

    - name: Display deployed files
      debug:
        msg: "   - {{ item.item.name }} → {{ item.item.dest }} ({{ 'changed' if item.changed else 'unchanged' }})"
      loop: "{{ deploy_results.results }}"
      loop_control:
        label: "{{ item.item.name }}"