---
# 校验 Docker Engine 是否安装
- name: '<{{ cmd | upper }}> | 校验 Docker Engine 是否安装'
  shell: |
    . /etc/profile
    docker info
  register: docker_ret
  ignore_errors: true

# 校验 Docker Compose 是否安装
- name: '<{{ cmd | upper }}> | 校验 Docker Compose 是否安装'
  shell: |
    . /etc/profile
    docker-compose version
  register: compose_ret
  ignore_errors: true

# 安装 Docker Engine
- block:
  - name: '<{{ cmd | upper }}> | 编辑 ~/.bashrc 文件环境变量'
    blockinfile:
      path: ~/.bashrc
      block: |
        export DOCKER_HOME={{ docker.dir.bin }}
        export PATH=$PATH:$DOCKER_HOME
      marker: '#{mark} DOCKER Environment'
      insertbefore: 'BOF'

  - name: '<{{ cmd | upper }}> | 编辑 /etc/profile 文件环境变量'
    blockinfile:
      path: /etc/profile
      block: |
        export DOCKER_HOME={{ docker.dir.bin }}
        export PATH=$PATH:$DOCKER_HOME
      marker: '#{mark} DOCKER Environment'
      insertafter: 'EOF'

  - name: '<{{ cmd | upper }}> | 创建 Docker 用户组'
    shell: 
      groupadd -r docker
    ignore_errors: yes

  - name: '<{{ cmd | upper }}> | 创建 Docker 相关目录并更新系统配置'
    shell: |
      source /etc/profile
      mkdir -p {{ docker.dir.main }}
      mkdir -p {{ docker.dir.bin }}
      mkdir -p {{ docker.dir.data }}
      mkdir -p /etc/docker
      if [[ -e /etc/docker/daemon.json ]];then
          cp /etc/docker/daemon.json /etc/docker/daemon.json.bak
      fi
      modprobe br_netfilter
      echo 'net.bridge.bridge-nf-call-ip6tables = 1' > /etc/sysctl.d/docker.conf
      echo 'net.bridge.bridge-nf-call-iptables = 1' >> /etc/sysctl.d/docker.conf
      echo 'net.ipv4.ip_forward = 1' >> /etc/sysctl.d/docker.conf
      sysctl --system

  - name: '<{{ cmd | upper }}> | 安装 Docker Engine'
    unarchive: 
      src: 'files/{{ ansible_architecture }}/{{ docker.package }}'
      dest: '{{ docker.dir.bin }}'
      mode: 0755
#      extra_opts:
#        - --strip-components 1

  - name: '<{{ cmd | upper }}> | 删除 Docker 临时文件'
    shell: |
      mv {{ docker.dir.bin }}/docker {{ docker.dir.bin }}/docker-tmp
      mv -f {{ docker.dir.bin }}/docker-tmp/* {{ docker.dir.bin }}
      rm -rf {{ docker.dir.bin }}/docker-tmp

  - name: '<{{ cmd | upper }}> | 初始化 Docker 相关配置文件'
    template:
      src: '{{ item.src }}'
      dest: '{{ item.dest }}'
      group: docker
    loop: 
    - src: docker.service.j2
      dest: /lib/systemd/system/docker.service
    - src: docker.socket.j2
      dest: /lib/systemd/system/docker.socket
    - src: daemon.json.j2
      dest: /etc/docker/daemon.json

  - name: '<{{ cmd | upper }}> | 启动 Docker 服务'
    systemd:
      daemon_reload: yes
      state: restarted
      name: docker.service
      enabled: yes

  - name: '<{{ cmd | upper }}> | 创建 Docker 网络' 
    shell: |
      . /etc/profile
      if docker network ls | grep -q {{ docker.network.name }} ; then
         docker network ls
      else
         docker network create {{ docker.network.name }} --subnet {{ docker.network.subnet }}
      fi

  - name: '<{{ cmd | upper }}> | 添加 Docker 安装标记'
    shell: |
      set -ex
      mkdir -p ~/.flag
      touch {{ flag }}

  when:
  - docker_ret.failed
  - cmd == "install"

# 安装 Docker Compose
- block: 
  - name: '<{{ cmd | upper }}> | 安装 Docker Compose'
    copy:
      src: files/{{ ansible_architecture }}/docker-compose
      dest: '{{ docker.dir.bin }}/docker-compose'
      mode: 0755

  when: 
  - compose_ret.failed
  - cmd == "install"

# 卸载 Docker Compose 和 Docker Engine
- block:
  - name: '<{{ cmd | upper }}> | 删除 Docker 网络' 
    shell: |
      docker network rm {{ docker.network.name }}

  - name: '<{{ cmd | upper }}> | 停止 Docker 服务'
    systemd:
      state: stopped
      name: docker.service
      enabled: no

  - name: '<{{ cmd | upper }}> | 清除 Docker 环境变量'
    blockinfile:
      path: '{{ item }}'
      marker: '#{mark} DOCKER Environment'
      state: absent
      backup: yes
    loop:
    - ~/.bashrc
    - /etc/profile    

  - name: '<{{ cmd | upper }}> | 卸载 Docker Engine 和 Docker Compose'
    file: 
      path: '{{ item }}'
      state: absent
    loop:
    - /lib/systemd/system/docker.service 
    - /lib/systemd/system/docker.socket
    - '{{ docker.dir.bin }}'
    - '{{ docker.dir.data }}'
    - '{{ flag }}'

  when:
  - cmd == "remove"
  - not docker_ret.failed