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---
# Target: alpine3.11
- name: Install Nginx and Certbot
  hosts: nginx

  vars:
    user: nginx
    home: "/etc/{{ user }}"
    nginx_key: https://nginx.org/keys/nginx_signing.key
    nginx_version: 1.16.1
    nginx_headers_version: 552e216a0da95c685d9db4f43e209c3f2a803e49
    brotli_version: e505dce68acc190cc5a1e780a3b0275e39f160ca
    quiche_version: 3c75701c6fa5b29a9076d9f82251f5aeee2c7f79

  tasks:

    - name: Ensuring group exists
      group:
        name: "{{ user }}"
        state: present

    - name: Creating user and making home directory
      user:
        system: yes
        state: present
        name: "{{ user }}"
        groups: "{{ user }}"
        home: "{{ home }}"

    - name: Installing the required nginx dependencies
      apk:
        state: present
        update_cache: yes
        name:
          - gcc
          - libc-dev
          - make
          - openssl-dev
          - pcre-dev
          - zlib-dev
          - linux-headers
          - curl
          - gnupg
          - libxslt-dev
          - gd-dev
          - geoip-dev
          - perl-dev
          - tar
          - openssl

    - name: Installing the required brotli dependencies
      apk:
        state: present
        update_cache: yes
        name:
          - autoconf
          - libtool
          - automake
          - git
          - g++
          - cmake
          - go
          - perl
          - rust
          - cargo

    - name: Cloning repositories
      git:
        repo: "{{ item.repo }}"
        dest: "{{ item.dest }}"
        version: "{{ item.version }}"
      with_items:
        -
          repo: https://github.com/google/ngx_brotli.git
          dest: /opt/nginx/brotli
          version: "{{ brotli_version }}"
        -
          repo: https://github.com/openresty/headers-more-nginx-module.git
          dest: /opt/nginx/nginx-headers
          version: "{{ nginx_headers_version }}"
        -
          repo: https://github.com/cloudflare/quiche
          dest: /opt/nginx/quiche
          version: "{{ quiche_version }}"

    - name: Downloading nginx
      get_url:
        url: "{{ item.url }}"
        dest: "{{ item.dest }}"
      with_items:
        -
          url: https://nginx.org/download/nginx-{{ nginx_version }}.tar.gz
          dest: /opt/nginx
        -
          url: https://nginx.org/download/nginx-{{ nginx_version }}.tar.gz.asc
          dest: /opt/nginx

    - name: Importing keys
      shell: |
       curl -sSL "{{ nginx_key }}" | gpg --import -
       touch .nginx-key-imported
      args:
       chdir: /opt/nginx
       creates: .nginx-key-imported

    - name: Verifying application
      shell: |
       gpg --batch --verify nginx-{{ nginx_version }}-tar.gz nginx-{{ nginx_version }}.tar.gz.asc
       touch .nginx-{{ nginx_version }}-verified
      args:
       chdir: /opt/nginx
       creates: .nginx-{{ nginx_version }}-verified

    - name: Extracting application source
      unarchive:
        src: /opt/nginx/nginx-{{ nginx_version}}.tar.gz
        dest: /opt/nginx
        remote_src: yes

    - name: Building application
      shell: >
        export CONFIG="
        --prefix=/etc/nginx
        --sbin-path=/usr/sbin/nginx
        --modules-path=/usr/lib/nginx/modules
        --conf-path=/etc/nginx/nginx.conf
        --error-log-path=/var/log/nginx/error.log
        --http-log-path=/var/log/nginx/access.log
        --pid-path=/var/run/nginx.pid
        --lock-path=/var/run/nginx.lock
        --http-client-body-temp-path=/var/cache/nginx/client_temp
        --http-proxy-temp-path=/var/cache/nginx/proxy_temp
        --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp
        --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp
        --http-scgi-temp-path=/var/cache/nginx/scgi_temp
        --user=nginx
        --group=nginx
        --with-http_ssl_module
        --with-http_realip_module
        --with-http_addition_module
        --with-http_sub_module
        --with-http_dav_module
        --with-http_flv_module
        --with-http_mp4_module
        --with-http_gunzip_module
        --with-http_gzip_static_module
        --with-http_random_index_module
        --with-http_secure_link_module
        --with-http_stub_status_module
        --with-http_auth_request_module
        --with-http_xslt_module=dynamic
        --with-http_image_filter_module=dynamic
        --with-http_geoip_module=dynamic
        --with-http_perl_module=dynamic
        --with-threads
        --with-stream
        --with-stream_ssl_module
        --with-stream_ssl_preread_module
        --with-stream_realip_module
        --with-stream_geoip_module=dynamic
        --with-http_slice_module
        --with-mail
        --with-mail_ssl_module
        --with-compat
        --with-file-aio
        --with-http_v2_module
        --with-http_v3_module
        --with-openssl=/opt/nginx/quiche/deps/boringssl
        --with-quiche=/opt/nginx/quiche
        --with-ipv6
        --add-module=/opt/nginx/brotli
        --add-module=/opt/nginx/nginx-headers
        --with-cc-opt=-Wno-error"
        && patch -p01 < ../quiche/extras/nginx/nginx-1.16.patch
        && ./configure $CONFIG
        && make -j$(getconf _NPROCESSORS_ONLN)
      args:
       chdir: /opt/nginx/nginx-{{ nginx_version }}
       creates: objs/nginx
      register: output
    - debug: var=output

    - name: Installing Application
      shell: >
        make install
        && mkdir -p /etc/nginx/default.d
        && mkdir -p /etc/nginx/conf.d
        && mkdir -p /etc/nginx/sites-available
        && mkdir -p /etc/nginx/sites-enabled
        && rm -rf /etc/nginx/*.default
        && rm -rf /etc/nginx/html
        && rm -rf /usr/sbin/nginx.old
        && strip /usr/sbin/nginx*
        && strip /usr/lib/nginx/modules/*.so
      args:
       chdir: /opt/nginx/nginx-{{ nginx_version }}
      register: output
    - debug: var=output

    - name: Generating self signed certificate
      shell: >
        openssl req -x509 -newkey rsa:4096 -nodes -keyout nginx.key
        -out nginx.crt -days 1095 -sha256 -subj '/CN=localhost'
      args:
       chdir: /etc/nginx
       creates: nginx.crt

    - name: Generating Diffie Hellman group
      shell: openssl dhparam -out dhparam.pem 2048
      args:
       chdir: /etc/nginx
       creates: dhparam.pem