---
- name: "Propose generated code changes upstream"
  hosts: localhost
  vars:
    patch_file: "{{ zuul.executor.work_root }}/{{ zuul.change }}.patch"
    branch_name: "codegenerator_{{ zuul.change }}"
  tasks:

    - name: "Check execution context"
      when: "zuul.branch is not defined"
      fail:
        msg: "This playbook must be run in a branch-based pipeline (e.g., 'promote')."

    - name: "Download docs archive"
      ansible.builtin.include_role:
        name: download-artifact
      vars:
        # download_artifact_job: provided by zuul job
        download_artifact_api: "https://zuul.opendev.org/api/tenant/{{ zuul.tenant }}"
        download_artifact_type:
          - rust_patch
        download_artifact_pipeline: gate

    - name: "Check git patch presense"
      ansible.builtin.stat:
        path: "{{ patch_file }}"
      register: "git_patch_stat"

    - name: "Process patch"
      when:
        - "git_patch_stat.stat.exists"
      block:

        - name: "Checkout target repository"
          ansible.builtin.git:
            accept_newhostkey: true
            repo: "{{ rust_sdk_git_repo }}"
            dest: "{{ rust_project_dir }}"

        - name: "Checkout new branch"
          ansible.builtin.command: "git checkout -b {{ branch_name }}"
          args:
            chdir: "{{ ansible_user_dir }}/openstack"

        - name: "Try to apply git patch"
          ansible.builtin.command: "git am {{ git_patch_stat.stat.path }}"
          args:
            chdir: "{{ ansible_user_dir }}/openstack"
          register: "patch_applied"
          failed_when: false

        - name: "Push changes"
          ansible.builtin.command: "git push --set-upstream origin {{ branch_name }}"
          args:
            chdir: "{{ ansible_user_dir }}/openstack"
          when: "patch_applied.changed"
          register: "change_pushed"

        - name: "Inform how to open PR"
          ansible.builtin.debug:
            msg: "Please follow the link https://github.com/gtema/openstack/pull/new/{{ branch_name }} to create new pull request"
          when: "change_pushed.changed"