---
- name: Verify
  hosts: all
  gather_facts: true

  tasks:
    - name: Load OS-specific vars
      ansible.builtin.include_vars: "{{ lookup('first_found', params) }}"
      vars:
        params:
          files:
            - "{{ ansible_distribution }}.yml"
            - "{{ ansible_os_family }}.yml"
          paths:
            - "vars"

    - name: Verify pkg status
      ansible.builtin.package:
        name: "{{ mariadb_package }}"
        state: present
      check_mode: true
      register: pkg_status

    - name: Check that {{ mariadb_package }} already installed
      ansible.builtin.assert:
        that: not pkg_status.changed
        fail_msg: "{{ mariadb_package }} is not installed"

    - name: Register {{ mariadb_config_file }}
      ansible.builtin.stat:
        path: "{{ mariadb_config_file }}"
      register: conf

    - name: Check {{ mariadb_config_file }}
      ansible.builtin.assert:
        that:
          - conf.stat.exists is true
          - conf.stat.pw_name == 'root'
          - conf.stat.gr_name == 'root'

    - name: Register {{ mariadb_data_dir }}
      ansible.builtin.stat:
        path: "{{ mariadb_data_dir }}"
      register: datadir

    - name: Check {{ mariadb_data_dir }}
      ansible.builtin.assert:
        that:
          - datadir.stat.isdir is true
          - datadir.stat.pw_name == mariadb_user
          - datadir.stat.gr_name == mariadb_user

    - name: Register {{ mariadb_log_dir }}
      ansible.builtin.stat:
        path: "{{ mariadb_log_dir }}"
      register: logdir

    - name: Check {{ mariadb_log_dir }}
      ansible.builtin.assert:
        that:
          - logdir.stat.isdir is true
          - logdir.stat.pw_name ==  mariadb_user
          - logdir.stat.gr_name ==  mariadb_user

    - name: Make sure that service is started
      ansible.builtin.service:
        name: mariadb
        state: started
      register: status
      failed_when: status.changed

    - name: Make sure that service is enabled
      ansible.builtin.service:
        name: mariadb
        state: enabled
      register: status
      failed_when: status.changed

    - name: Check that 127.0.0.1:3306 is listening
      ansible.builtin.wait_for:
        port: 3306
        timeout: 2

    - name: Get MariaDB version
      ansible.builtin.shell: |
        mariadb -Bse 'STATUS' | grep "^Server version:"
      register: version
      when: lookup('env', 'MARIADB_VERSION')

    - name: Check MariaDB version
      ansible.builtin.assert:
        that:
          - lookup('env', 'MARIADB_VERSION') in version.stdout
        msg: "{{ version.stdout }}"
      when: lookup('env', 'MARIADB_VERSION')

    - name: Check that Innodb engine is enabled (and default)
      ansible.builtin.shell: |
        mariadb -Bse 'SHOW ENGINES' | grep -qE '^InnoDB.DEFAULT.*YES.YES.YES$'

    - name: Check that default db exist
      ansible.builtin.shell: |
        mariadb -Bse 'SHOW DATABASES' | grep -q '^{{ item }}$'
      loop:
        - mysql
        - information_schema
        - performance_schema

    - name: Check that test db exist
      ansible.builtin.shell: |
        mariadb -Bse 'SHOW DATABASES' | grep -q '^{{ item }}$'
      loop:
        - db1
        - db2

    - name: Do some SQL queries
      ansible.builtin.shell: |
        mariadb -Bse 'DROP DATABASE IF EXIST db'
        mariadb -Bse 'CREATE DATABASE db'
        mariadb -e 'CREATE TABLE db.t_innodb(a1 SERIAL, c1 CHAR(8)) ENGINE=InnoDB; INSERT INTO db.t_innodb VALUES (1,"foo"),(2,"bar")'
        mariadb -e 'CREATE FUNCTION db.f() RETURNS INT DETERMINISTIC RETURN 1'
        mariadb -e 'SHOW TABLES IN db'
        mariadb -e 'SELECT * FROM db.t_innodb; INSERT INTO db.t_innodb VALUES (3,"foo"),(4,"bar")'
        mariadb -e 'SELECT db.f()'