---
# =============================================================================
# Gitea Actions Runner Deployment
# =============================================================================
# Deploys act_runner for Gitea Actions CI/CD.
#
# Prerequisites:
#   1. Gitea instance running with Actions enabled
#   2. Runner registration token from Gitea admin
#
# Get registration token:
#   1. Go to Gitea → Site Administration → Actions → Runners
#   2. Click "Create new runner"
#   3. Copy the registration token
#
# Usage:
#   ansible-playbook -i poc-inventory.yml playbook.yml -e vault_gitea_runner_token=<TOKEN>
# =============================================================================

- name: Deploy Gitea Actions Runner
  hosts: gitea_runner_servers
  become: true
  vars_files:
    - group_vars/gitea_runner_servers.yml

  pre_tasks:
    - name: Validate runner token is provided
      ansible.builtin.assert:
        that:
          - gitea_runner_token is defined
          - gitea_runner_token | length > 0
        fail_msg: |
          Runner token not provided!
          Get it from: {{ gitea_url }}/admin/actions/runners
          Run with: -e vault_gitea_runner_token=<TOKEN>

  tasks:
    # =========================================================================
    # Docker (required for container-based jobs)
    # =========================================================================
    - name: Check if Docker is installed
      ansible.builtin.command: docker --version
      register: docker_check
      changed_when: false
      failed_when: false

    - name: Fail if Docker not installed
      ansible.builtin.fail:
        msg: "Docker is required. Run gitea or netbird playbook first to install Docker."
      when: docker_check.rc != 0

    # =========================================================================
    # Create Runner Directory
    # =========================================================================
    - name: Create runner directory
      ansible.builtin.file:
        path: "{{ gitea_runner_dir }}"
        state: directory
        mode: "0755"

    # =========================================================================
    # Download act_runner
    # =========================================================================
    - name: Download act_runner binary
      ansible.builtin.get_url:
        url: "https://gitea.com/gitea/act_runner/releases/download/v{{ gitea_runner_version }}/act_runner-{{ gitea_runner_version }}-linux-amd64"
        dest: "{{ gitea_runner_dir }}/act_runner"
        mode: "0755"

    # =========================================================================
    # Register Runner
    # =========================================================================
    - name: Check if runner is already registered
      ansible.builtin.stat:
        path: "{{ gitea_runner_dir }}/.runner"
      register: runner_config

    - name: Register runner with Gitea
      ansible.builtin.command:
        cmd: >
          {{ gitea_runner_dir }}/act_runner register
          --instance {{ gitea_url }}
          --token {{ gitea_runner_token }}
          --name {{ gitea_runner_name }}
          --labels {{ gitea_runner_labels }}
          --no-interactive
        chdir: "{{ gitea_runner_dir }}"
      when: not runner_config.stat.exists
      register: register_result

    - name: Show registration result
      ansible.builtin.debug:
        var: register_result.stdout_lines
      when: register_result is changed

    # =========================================================================
    # Create Systemd Service
    # =========================================================================
    - name: Create systemd service for runner
      ansible.builtin.copy:
        dest: /etc/systemd/system/gitea-runner.service
        mode: "0644"
        content: |
          [Unit]
          Description=Gitea Actions Runner
          After=network.target docker.service
          Requires=docker.service

          [Service]
          Type=simple
          User=root
          WorkingDirectory={{ gitea_runner_dir }}
          ExecStart={{ gitea_runner_dir }}/act_runner daemon
          Restart=always
          RestartSec=10

          [Install]
          WantedBy=multi-user.target

    - name: Reload systemd
      ansible.builtin.systemd:
        daemon_reload: true

    - name: Start and enable runner service
      ansible.builtin.systemd:
        name: gitea-runner
        state: started
        enabled: true

    # =========================================================================
    # Verify
    # =========================================================================
    - name: Wait for runner to be active
      ansible.builtin.pause:
        seconds: 5

    - name: Check runner status
      ansible.builtin.systemd:
        name: gitea-runner
      register: runner_status

    - name: Display deployment status
      ansible.builtin.debug:
        msg: |
          ============================================
          Gitea Actions Runner Deployed!
          ============================================

          Service status: {{ runner_status.status.ActiveState }}

          The runner should now appear in:
            {{ gitea_url }}/admin/actions/runners

          Labels available:
            {{ gitea_runner_labels }}

          View logs:
            journalctl -u gitea-runner -f

          ============================================