---
# =================================================================
# Nextcloud Removal Playbook
# =================================================================
# Rick-Infra - Clean removal of Nextcloud installation
#
# This playbook removes all Nextcloud components:
# - Systemd services and timers
# - Container and images
# - Data directories
# - Database and user
# - Caddy configuration
# - System user and groups
#
# Usage: ansible-playbook playbooks/remove-nextcloud.yml -i inventory/hosts.yml

- name: Remove Nextcloud Installation
  hosts: arch-vps
  become: yes
  gather_facts: yes
  
  vars:
    nextcloud_user: nextcloud
    nextcloud_group: nextcloud
    nextcloud_home: /opt/nextcloud
    nextcloud_db_name: nextcloud
    nextcloud_db_user: nextcloud
    caddy_sites_enabled_dir: /etc/caddy/sites-enabled
  
  tasks:
    # ============================================
    # Stop and Disable Services
    # ============================================
    
    - name: Stop and disable nextcloud-cron timer
      systemd:
        name: nextcloud-cron.timer
        state: stopped
        enabled: no
      failed_when: false
      
    - name: Stop and disable nextcloud-cron service
      systemd:
        name: nextcloud-cron.service
        state: stopped
        enabled: no
      failed_when: false
    
    - name: Stop and disable nextcloud service
      systemd:
        name: nextcloud.service
        state: stopped
        enabled: no
      failed_when: false
    
    # ============================================
    # Remove Container and Images
    # ============================================
    
    - name: Remove nextcloud container (if running)
      command: podman rm -f nextcloud
      register: container_remove
      changed_when: container_remove.rc == 0
      failed_when: false
    
    - name: Remove nextcloud images
      command: podman rmi -f {{ item }}
      loop:
        - docker.io/library/nextcloud:stable-fpm
        - docker.io/library/nextcloud
      register: image_remove
      changed_when: image_remove.rc == 0
      failed_when: false
    
    # ============================================
    # Remove Systemd Units
    # ============================================
    
    - name: Remove nextcloud-cron systemd units
      file:
        path: "{{ item }}"
        state: absent
      loop:
        - /etc/systemd/system/nextcloud-cron.timer
        - /etc/systemd/system/nextcloud-cron.service
    
    - name: Remove nextcloud quadlet file
      file:
        path: /etc/containers/systemd/nextcloud.container
        state: absent
    
    - name: Reload systemd daemon
      systemd:
        daemon_reload: yes
    
    # ============================================
    # Remove Database
    # ============================================
    
    - name: Drop nextcloud database
      become_user: postgres
      postgresql_db:
        name: "{{ nextcloud_db_name }}"
        state: absent
      failed_when: false
    
    - name: Drop nextcloud database user
      become_user: postgres
      postgresql_user:
        name: "{{ nextcloud_db_user }}"
        state: absent
      failed_when: false
    
    # ============================================
    # Remove Caddy Configuration
    # ============================================
    
    - name: Remove nextcloud Caddy configuration
      file:
        path: "{{ caddy_sites_enabled_dir }}/nextcloud.caddy"
        state: absent
      notify: reload caddy
    
    # ============================================
    # Remove Data Directories
    # ============================================
    
    - name: Remove nextcloud home directory (including all data)
      file:
        path: "{{ nextcloud_home }}"
        state: absent
    
    # ============================================
    # Remove User and Groups
    # ============================================
    
    - name: Remove nextcloud user
      user:
        name: "{{ nextcloud_user }}"
        state: absent
        remove: yes
        force: yes
    
    - name: Remove nextcloud group
      group:
        name: "{{ nextcloud_group }}"
        state: absent
    
    # ============================================
    # Clean Up Remaining Files
    # ============================================
    
    - name: Find nextcloud-related files in /tmp
      find:
        paths: /tmp
        patterns: "nextcloud*,nc_*"
        file_type: any
      register: tmp_files
    
    - name: Remove nextcloud temp files
      file:
        path: "{{ item.path }}"
        state: absent
      loop: "{{ tmp_files.files }}"
      when: tmp_files.files | length > 0
      failed_when: false
    
    - name: Remove caddy logs for nextcloud
      file:
        path: /var/log/caddy/nextcloud.log
        state: absent
      failed_when: false
    
    # ============================================
    # Verification
    # ============================================
    
    - name: Verify nextcloud service is removed
      command: systemctl list-units --all nextcloud*
      register: units_check
      changed_when: false
    
    - name: Verify nextcloud container is removed
      command: podman ps -a --filter name=nextcloud
      register: container_check
      changed_when: false
    
    - name: Display removal status
      debug:
        msg: |
          ✅ Nextcloud removal complete!
          
          Removed components:
          - ⏹️  Nextcloud service and cron timer
          - 🐳 Container: {{ 'Removed' if container_remove.rc == 0 else 'Not found' }}
          - 🗄️  Database: {{ nextcloud_db_name }}
          - 📁 Data directory: {{ nextcloud_home }}
          - 👤 System user: {{ nextcloud_user }}
          - 🌐 Caddy configuration
          
          Remaining services:
          {{ units_check.stdout }}
          
          Containers:
          {{ container_check.stdout }}
  
  handlers:
    - name: reload caddy
      systemd:
        name: caddy
        state: reloaded
      failed_when: false