---
- name: create an Alpine build container
  hosts: localhost
  gather_facts: false
  collections:
    - containers.podman
  vars:
    alpine_version: 3.13.1
  tasks:
    - name: check container
      podman_container_info:
        name: alpine-builder
      register: container_info

    - name: create container
      block:
        - name: ensure image is present and fresh
          podman_image:
            name: docker.io/library/alpine
            tag: "{{ alpine_version }}"
            force: yes

        - podman_container:
            name: alpine-builder
            image: "alpine:{{ alpine_version }}"
            tty: yes
            interactive: yes
          register: container
      when: "'no such container' in container_info.stderr"

    - name: register container
      add_host:
        name: alpine-builder
        ansible_connection: podman
      changed_when: false

    - name: install Python
      block:
        - raw: apk update
        - raw: apk add python3
      delegate_to: alpine-builder
      when: container is changed

- name: configure a build environment
  hosts: alpine-builder
  become_method: su
  become_user: "{{ user.handle }}"
  vars:
    user:
      name: GERCZEI, Tamas
      email: tamas@gerczei.eu
      handle: tgerczei
    build_config:
      - PACKAGER="{{ user.name }} <{{ user.email }}>"
      - MAINTAINER="$PACKAGER"
  tasks:
    - name: update system
      apk:
        update_cache: yes
        upgrade: yes

    - name: install Alpine SDK
      package:
        name: alpine-sdk

    - name: configure build system
      lineinfile:
         path: /etc/abuild.conf
         line: "{{ config_line }}"
         insertafter: "^#{{ config_line.split('=')[0] }}.*"
      loop: "{{ build_config }}"
      loop_control:
        loop_var: config_line
        label: "{{ config_line.split('=')[0] }}"

    - name: ensure user exists
      user:
        name: "{{ user.handle }}"
        shell: /bin/sh
        groups:
          - wheel
          - abuild
        append: yes
      
    - name: obtain aports tree
      block:
        - name: configure git
          git_config:
            name: "{{ item.name }}"
            value: "{{ item.value }}"
            scope: global
          loop: "{{ git_settings }}"
          vars:
            git_settings:
              - name: user.email
                value: "{{ user.email }}"
              - name: user.name
                value: "{{ user.name }}"
    
        - name: clone aports repository
          git:
            repo: git://git.alpinelinux.org/aports
            dest: "/home/{{ user.handle }}/aports"
            update: no
          register: repo

        - name: generate cryptographic key for the build system
          command: abuild-keygen -qai
          args:
            creates: "/home/{{ user.handle }}/.abuild"

      become: yes

- name: build a package
  hosts: alpine-builder
  become_method: su
  become_user: "{{ user.handle }}"
  vars:
    package:
      name: community/gitea
      version: 1.11.3-r0
    user:
      name: GERCZEI, Tamas
      email: tamas@gerczei.eu
      handle: tgerczei
  tasks:
    - name: build and fetch package
      block:
        - name: modify APKBUILD
          copy:
            src: "/home/{{ user.handle }}/alpine-{{ package.name | basename }}/APKBUILD_{{ package.version }}"
            dest: "/home/{{ user.handle }}/aports/{{ package.name }}/APKBUILD"
          register: apkbuild
          when: repo is changed

        - name: generate checksum
          command: abuild -q checksum
          args:
            chdir: "/home/{{ user.handle }}/aports/{{ package.name }}"
          when: apkbuild is changed

        - name: build package
          command: abuild -qrc
          args:
            chdir: "/home/{{ user.handle }}/aports/{{ package.name }}"
            creates: "/home/{{ user.handle }}/packages/{{ package.name | dirname }}/x86_64"

        - name: obtain package
          fetch:
            src: "/home/{{ user.handle }}/packages/{{ package.name | dirname }}/x86_64/{{ package.name | basename }}-{{ package.version }}.apk"
            dest: "/home/{{ user.handle }}/alpine-{{ package.name | basename }}/packages/"
            flat: yes

      become: yes