---
- name: mariadb
  hosts: all
  tasks:

    - name: Create /home/docker/mariadb.{{inventory_hostname}} dir
      ansible.builtin.file:
        path: /home/docker/mariadb.{{inventory_hostname}}
        owner: root
        group: docker
        state: directory
        mode: '0550'

    - name: /home/docker/mariadb.{{inventory_hostname}}/genpw.sh (generate Random PW)
      blockinfile:
        path: /home/docker/mariadb.{{inventory_hostname}}/genpw.sh
        create: yes
        mode: 0550
        owner: root
        group: docker
        marker: "# {mark} ANSIBLE MANAGED BLOCK"
        block: |
          cd /home/docker/mariadb.{{inventory_hostname}}

          mysqlpassword=$(pwgen -s 32 1)

          [ -f env.db ] || echo "MARIADB_ROOT_PASSWORD=!MYSQLPASSWORD!
          " >env.db

          [ -f env.phpmyadmin ] || echo "PMA_USER=root
          PMA_PASSWORD=!MYSQLPASSWORD!
          " >env.phpmyadmin

          chmod 440 env.db env.phpmyadmin
          chown root:docker env.db env.phpmyadmin
          sed -i "s/\!MYSQLPASSWORD\!/$mysqlpassword/g" env.db env.phpmyadmin

        backup: yes
        validate: /bin/bash -n %s

    - name: /home/docker/mariadb.{{inventory_hostname}}/genpw.sh shebang
      lineinfile:
        path: /home/docker/mariadb.{{inventory_hostname}}/genpw.sh
        insertbefore: BOF
        line: "#!/bin/bash -e"

    - name: Gen initial passwords if not exists
      ansible.builtin.shell: ./genpw.sh
      args:
        chdir: /home/docker/mariadb.{{inventory_hostname}}
        creates: /home/docker/mariadb.{{inventory_hostname}}/env.db

    - name: /usr/local/sbin/autoupdate.d/mariadb-ssl.update
      blockinfile:
        path: /usr/local/sbin/autoupdate.d/mariadb-ssl.update
        create: yes
        mode: 0550
        owner: root
        group: root
        marker: "# {mark} ANSIBLE MANAGED BLOCK"
        block: |
          cd /home/docker/mariadb.{{inventory_hostname}}
          mkdir -p ssl
                    
          # take letsencrypt-certs from traefik and check for new ones
          new=0
          for ssl in key certificate
          do
            touch ssl/${ssl}.pem
            until [ -s "ssl/${ssl}.pem.new" ]
            do
              cat /home/docker/traefik/letsencrypt/acme.json  | jq -r ".letsencrypt.Certificates[] | select(.domain.main==\"mail.{{inventory_hostname}}\") | .${ssl}" | base64 -d >ssl/${ssl}.pem.new
              sleep 5
            done
            old=$(shasum ssl/${ssl}.pem)
            new=$(shasum ssl/${ssl}.pem.new)
            if ! [ "$new" = "$old" ]
            then
              new=1
              mv ssl/${ssl}.pem.new >shasum ssl/${ssl}.pem
            else
              rm ssl/${ssl}.pem.new
            fi
          done

          chmod 400 ssl/*.pem
          chown 999:33 ssl/*.pem

          if [ -n "$new" ]
          then
            docker compose down
            docker compose up -d        
          fi
          
        backup: yes
        validate: /bin/bash -n %s

    - name: /usr/local/sbin/autoupdate.d/mariadb-ssl.update shebang
      lineinfile:
        path: /usr/local/sbin/autoupdate.d/mariadb-ssl.update
        insertbefore: BOF
        line: "#!/bin/bash -e"

    - name: /home/docker/mariadb.{{inventory_hostname}}/ssl.cnf (use ssl in mariadb)
      blockinfile:
        path: /home/docker/mariadb.{{inventory_hostname}}/ssl.cnf
        create: yes
        mode: 0444
        owner: root
        group: docker
        marker: "# {mark} ANSIBLE MANAGED BLOCK"
        block: |
          [mariadbd]
          ssl=1
          ssl-cert=/etc/mysql/certificate.pem
          ssl-key=/etc/mysql/key.pem
        backup: yes

    - name: /home/docker/mariadb.{{inventory_hostname}}/config.user.inc.php (use ssl in phpmyadmin)
      blockinfile:
        path: /home/docker/mariadb.{{inventory_hostname}}/phpmyadmin-config.user.inc.php
        create: yes
        mode: 0444
        owner: root
        group: docker
        marker: "# {mark} ANSIBLE MANAGED BLOCK"
        block: |
          // IP address / host of your instance
          $cfg['Servers'][$i]['host'] = 'mariadb.{{inventory_hostname}}';
          // Use SSL for connection
          $cfg['Servers'][$i]['ssl'] = true;
          // Disable SSL verification
          $cfg['Servers'][$i]['ssl_verify'] = false;
        backup: yes

    - name: /home/docker/mariadb.{{inventory_hostname}}/docker-compose.yml Container Configuration
      blockinfile:
        path: /home/docker/mariadb.{{inventory_hostname}}/docker-compose.yml
        create: yes
        mode: 0440
        owner: root
        group: docker
        marker: "# {mark} ANSIBLE MANAGED BLOCK"
        block: |
        
          services:

            mariadb.{{inventory_hostname}}:
              image: mariadb:lts
              cap_add:
                - SYS_NICE
              restart: unless-stopped
              networks:
                - mariadb.{{inventory_hostname}}--network
              volumes:
                - ./db-data:/var/lib/mysql
                - /etc/localtime:/etc/localtime:ro
                - /home/docker/_defaults/mariadb/99-server.cnf:/etc/mysql/mariadb.conf.d/99-server.cnf:ro
                - ./ssl.cnf:/etc/mysql/mariadb.conf.d/99-ssl.cnf:ro
                - ./ssl/certificate.pem:/etc/mysql/certificate.pem:ro
                - ./ssl/key.pem:/etc/mysql/key.pem:ro
              env_file:
                - env.db
                - /home/docker/_defaults/mariadb/mariadb.env
              ports:
                - 0.0.0.0:33306:3306

            mariadb.{{inventory_hostname}}--phpmyadmin:
              image: phpmyadmin:latest
              restart: unless-stopped
              env_file: env.phpmyadmin
              environment:
                - PMA_ARBITRARY=0
                - PMA_HOST=mariadb.{{inventory_hostname}}
              volumes:
                - /etc/localtime:/etc/localtime:ro
                - ./phpmyadmin-config.user.inc.php:/etc/phpmyadmin/config.user.inc.php:ro
              networks:
                - mariadb.{{inventory_hostname}}--network
                - traefik
              labels:
                - traefik.enable=true
                # HTTPS
                - traefik.http.routers.mariadb-{{ ansible_facts['hostname'] }}.rule=Host(`mariadb.{{ ansible_facts['nodename'] }}`)
                - traefik.http.routers.mariadb-{{ ansible_facts['hostname'] }}.entrypoints=https
                - traefik.http.routers.mariadb-{{ ansible_facts['hostname'] }}.tls=true
                # Proxy to service-port
                - traefik.http.services.mariadb-{{ ansible_facts['hostname'] }}.loadbalancer.server.port=80
                - traefik.http.routers.mariadb-{{ ansible_facts['hostname'] }}.service=mariadb-{{ ansible_facts['hostname'] }}
                # cert via letsencrypt
                - traefik.http.routers.mariadb-{{ ansible_facts['hostname'] }}.tls.certresolver=letsencrypt
                # Traefik network
                - traefik.docker.network=traefik
                # auth
                - traefik.http.routers.mariadb-{{ ansible_facts['hostname'] }}.middlewares=secHeaders@file,default-basic-auth@file

          networks:
            mariadb.{{inventory_hostname}}--network:
              driver: bridge
              driver_opts:
                com.docker.network.bridge.name: br-mariadb
            traefik:
              external: true

        backup: yes        
      notify: Restart mariadb

    - name: Get letsencrypt cert from traefik
      ansible.builtin.shell: /usr/local/sbin/autoupdate.d/mariadb-ssl.update
      args:
        chdir: /home/docker/mariadb.{{inventory_hostname}}
        creates: /home/docker/mariadb.{{inventory_hostname}}/ssl/certificate.pem

  handlers:

    - name: Restart mariadb
      ansible.builtin.shell: docker-compose up -d --force-recreate
      args:
        chdir: /home/docker/mariadb.{{inventory_hostname}}