---
# Uptime Kuma Backup Playbook
#
# Creates a backup of Uptime Kuma's MariaDB database by running mariadb-dump
# directly inside the running container.
#
# Usage:
#   Local:  ansible-playbook playbooks/k3s/backup-uptime-kuma.yaml
#   AWX:    Run as job template (no additional configuration required)
#
# The backup is stored at /app/backups/uptime-kuma/kuma_backup_YYYY-MM-DD.sql inside the container.
# Backups older than 7 days are automatically removed.

- name: Backup Uptime Kuma database
  hosts: localhost
  connection: local
  gather_facts: false

  vars:
    k3s_context: "{{ awx_k3s_context | default('k3s-prod') }}"
    uptime_kuma_namespace: "uptime-kuma"
    uptime_kuma_pod_label: "app=uptime-kuma"
    backup_date: "{{ '%Y-%m-%d' | strftime }}"
    backup_filename: "kuma_backup_{{ backup_date }}.sql"
    backup_retention_days: 7

  tasks:
    - name: Get Uptime Kuma pod name
      kubernetes.core.k8s_info:
        kind: Pod
        namespace: "{{ uptime_kuma_namespace }}"
        label_selectors:
          - "{{ uptime_kuma_pod_label }}"
        context: "{{ k3s_context }}"
      register: uptime_kuma_pods

    - name: Validate pod is running
      ansible.builtin.fail:
        msg: "No running Uptime Kuma pod found in namespace {{ uptime_kuma_namespace }}"
      when: uptime_kuma_pods.resources | length == 0

    - name: Set pod name
      ansible.builtin.set_fact:
        uptime_kuma_pod_name: "{{ uptime_kuma_pods.resources[0].metadata.name }}"

    - name: Display backup info
      ansible.builtin.debug:
        msg: "Backing up Uptime Kuma database from pod: {{ uptime_kuma_pod_name }}"

    - name: Ensure backup directory exists
      kubernetes.core.k8s_exec:
        namespace: "{{ uptime_kuma_namespace }}"
        pod: "{{ uptime_kuma_pod_name }}"
        container: uptime-kuma
        command: mkdir -p /app/backups/uptime-kuma
        context: "{{ k3s_context }}"

    - name: Run MariaDB backup
      kubernetes.core.k8s_exec:
        namespace: "{{ uptime_kuma_namespace }}"
        pod: "{{ uptime_kuma_pod_name }}"
        container: uptime-kuma
        command: >
          sh -c "mariadb-dump kuma -S /app/data/run/mariadb.sock \
            --ignore-table-data=kuma.heartbeat \
            --ignore-table-data=kuma.stat_minutely \
            --ignore-table-data=kuma.stat_hourly \
            --ignore-table-data=kuma.stat_daily \
            > /app/backups/uptime-kuma/{{ backup_filename }}"
        context: "{{ k3s_context }}"
      register: backup_result

    - name: Display backup result
      ansible.builtin.debug:
        msg: "Backup completed successfully. Backup file: /app/backups/uptime-kuma/{{ backup_filename }}"
      when: backup_result.rc == 0

    - name: Fail if backup failed
      ansible.builtin.fail:
        msg: "Backup failed: {{ backup_result.stderr | default('Unknown error') }}"
      when: backup_result.rc != 0

    - name: Remove backups older than retention period
      kubernetes.core.k8s_exec:
        namespace: "{{ uptime_kuma_namespace }}"
        pod: "{{ uptime_kuma_pod_name }}"
        container: uptime-kuma
        command: >
          find /app/backups/uptime-kuma -name "kuma_backup_*.sql" -type f -mtime +{{ backup_retention_days }} -delete
        context: "{{ k3s_context }}"
      register: cleanup_result

    - name: Display cleanup result
      ansible.builtin.debug:
        msg: "Removed backups older than {{ backup_retention_days }} days"
      when: cleanup_result.rc == 0