---
# Nextcloud Maintenance Playbook
# Created: 2026-01-24
# Purpose: Run database and file maintenance tasks on Nextcloud instances
#
# This playbook performs:
#   1. Add missing database indices (improves query performance)
#   2. Update mimetypes database (ensures proper file type handling)
#
# Usage:
#   cd ansible/
#   HCLOUD_TOKEN="..." ansible-playbook -i hcloud.yml \
#     playbooks/nextcloud-maintenance.yml --limit <server> \
#     --private-key "../keys/ssh/<server>"
#
#   To run on all servers:
#   HCLOUD_TOKEN="..." ansible-playbook -i hcloud.yml \
#     playbooks/nextcloud-maintenance.yml \
#     --private-key "../keys/ssh/<server>"
#
# Requirements:
#   - HCLOUD_TOKEN environment variable set
#   - SSH access to target server(s)
#   - Nextcloud container must be running

- name: Nextcloud Maintenance Tasks
  hosts: all
  become: true
  gather_facts: true

  vars:
    nextcloud_container: "nextcloud"

  tasks:
    # ============================================================
    # PRE-CHECK
    # ============================================================

    - name: Display maintenance plan
      debug:
        msg: |
          ============================================================
          Nextcloud Maintenance - {{ inventory_hostname }}
          ============================================================

          This playbook will:
          1. Add missing database indices
          2. Update mimetypes database
          3. Display results

          Estimated time: 1-3 minutes per server
          ============================================================

    - name: Check if Nextcloud container is running
      shell: docker ps --filter "name=^{{ nextcloud_container }}$" --format "{{ '{{' }}.Names{{ '}}' }}"
      register: nextcloud_running
      changed_when: false
      failed_when: false

    - name: Fail if Nextcloud is not running
      fail:
        msg: "Nextcloud container is not running on {{ inventory_hostname }}"
      when: "'nextcloud' not in nextcloud_running.stdout"

    - name: Get current Nextcloud version
      shell: docker exec -u www-data {{ nextcloud_container }} php occ --version
      register: nextcloud_version
      changed_when: false

    - name: Display Nextcloud version
      debug:
        msg: "{{ nextcloud_version.stdout }}"

    # ============================================================
    # TASK 1: ADD MISSING DATABASE INDICES
    # ============================================================

    - name: Check for missing database indices
      shell: docker exec -u www-data {{ nextcloud_container }} php occ db:add-missing-indices
      register: db_indices_result
      changed_when: "'updated successfully' in db_indices_result.stdout"
      failed_when: db_indices_result.rc != 0

    - name: Display database indices results
      debug:
        msg: |
          ============================================================
          Database Indices Results
          ============================================================
          {{ db_indices_result.stdout }}
          ============================================================

    # ============================================================
    # TASK 2: UPDATE MIMETYPES DATABASE
    # ============================================================

    - name: Update mimetypes database
      shell: docker exec -u www-data {{ nextcloud_container }} php occ maintenance:mimetype:update-db
      register: mimetype_result
      changed_when: "'Added' in mimetype_result.stdout"
      failed_when: mimetype_result.rc != 0

    - name: Parse mimetype results
      set_fact:
        mimetypes_added: "{{ mimetype_result.stdout | regex_search('Added (\\d+) new mimetypes', '\\1') | default(['0'], true) | first }}"

    - name: Display mimetype results
      debug:
        msg: |
          ============================================================
          Mimetype Update Results
          ============================================================
          Mimetypes added: {{ mimetypes_added }}
          {% if mimetypes_added | int > 0 %}
          ✓ Mimetype database updated successfully
          {% else %}
          ✓ All mimetypes already up to date
          {% endif %}
          ============================================================

    # ============================================================
    # SUMMARY
    # ============================================================

    - name: Display maintenance summary
      debug:
        msg: |
          ============================================================
          ✓ MAINTENANCE COMPLETED - {{ inventory_hostname }}
          ============================================================

          Server: {{ inventory_hostname }}
          Version: {{ nextcloud_version.stdout }}

          Tasks completed:
          {% if db_indices_result.changed %}
          ✓ Database indices: Updated
          {% else %}
          ✓ Database indices: Already optimized
          {% endif %}
          {% if mimetype_result.changed %}
          ✓ Mimetypes: Added {{ mimetypes_added }} new types
          {% else %}
          ✓ Mimetypes: Already up to date
          {% endif %}

          Next steps:
          - Check admin interface for any remaining warnings
          - Warnings may take a few minutes to clear from cache

          ============================================================