---
# This playbook backups database used for volkszaehler.
- name: Backup Mini-Server
  hosts: all
  gather_facts: true

  tasks:
    - name: Backup Mini-Server
      block:
        - include_vars: vars/mattermost.yaml
        - include_vars: vars/mini-server.yaml

        - name: Create backup directory
          file:
            path: "{{ backup_dir }}"
            state: directory

        - name: Backup mysql databases
          shell: docker exec {{ item }}-db mysqldump -u{{ item }} -p{{ lookup('vars', item ~ '-password') }} {{ item }} > {{ backup_dir }}/{{ item }}/db-{{ ansible_date_time.iso8601_basic_short }}.sql
          loop: "{{ mysql_databases }}"

        - name: Compress database backup files
          shell: gzip {{ backup_dir }}/{{ item }}/db-{{ ansible_date_time.iso8601_basic_short }}.sql
          loop: "{{ mysql_databases }}"

        - name: Fetch database backups
          fetch:
            src: "{{ backup_dir }}/{{ item }}/db-{{ ansible_date_time.iso8601_basic_short }}.sql.gz"
            dest: "{{ local_backup }}/{{ item }}/db-{{ ansible_date_time.iso8601_basic_short }}.sql.gz/"
            flat: yes
          loop: "{{ mysql_databases }}"

        - name: Clean backup directory
          file:
            path: "{{ backup_dir }}"
            state: absent

        - name: Inform Mattermost about success
          uri:
            url: "{{ mattermost_url }}"
            validate_certs: no
            method: POST
            body_format: json
            body:
              channel_id: "{{ channel_id }}"
              message: "{{ ansible_date_time.date }} {{ ansible_date_time.time }}: Playbook ran successful ({{ ansible_play_name }})"
            headers:
              Content-Type: application/json
              Authorization: "Bearer {{ semaphore_token }}"
            status_code: [200, 201]

      rescue:
        - name: Inform Mattermost about error
          uri:
            url: "{{ mattermost_url }}"
            validate_certs: no
            method: POST
            body_format: json
            body:
              channel_id: "{{ channel_id }}"
              message: "{{ ansible_date_time.date }} {{ ansible_date_time.time }}: Playbook ran with error ({{ ansible_play_name }})"
            headers:
              Content-Type: application/json
              Authorization: "Bearer {{ error_token }}"
            status_code: [200, 201]