---
- name: "Checkmk | Cleanup agent"
  hosts: all
  gather_facts: true

  tasks:
    - name: "Windows | Remove installed Checkmk agent"
      when: ansible_facts['os_family'] == 'Windows'
      ansible.windows.win_powershell:
        script: |
          $Ansible.Changed = $false
          $uninstallRoots = @(
            'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall',
            'HKLM:\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall'
          )

          $products = foreach ($root in $uninstallRoots) {
            if (Test-Path -LiteralPath $root) {
              Get-ChildItem -LiteralPath $root -ErrorAction SilentlyContinue |
                ForEach-Object {
                  $product = Get-ItemProperty -LiteralPath $_.PSPath -ErrorAction SilentlyContinue
                  if ($product.DisplayName -like 'Check MK Agent*' -or
                      $product.DisplayName -like 'Checkmk Agent*') {
                    [PSCustomObject]@{
                      ProductCode = $_.PSChildName
                      DisplayName = $product.DisplayName
                    }
                  }
                }
            }
          }

          foreach ($product in $products) {
            if ($product.ProductCode -match '^\{[0-9A-Fa-f-]+\}$') {
              $process = Start-Process -FilePath 'msiexec.exe' `
                -ArgumentList "/x $($product.ProductCode) /qn /norestart" `
                -Wait -PassThru

              if ($process.ExitCode -notin @(0, 1605, 1614, 3010)) {
                throw "Failed to uninstall $($product.DisplayName). MSI exit code: $($process.ExitCode)"
              }

              if ($process.ExitCode -in @(0, 3010)) {
                $Ansible.Changed = $true
              }
            }
          }

          $Ansible.Result = @{
            removed_products = @($products.DisplayName)
          }

    - name: "Debian | Remove Checkmk agent"
      when: ansible_facts['os_family'] == 'Debian'
      ansible.builtin.apt:
        name: check-mk-agent
        state: absent
        purge: true

    - name: "RedHat | Remove Checkmk agent"
      when: ansible_facts['os_family'] == 'RedHat'
      ansible.builtin.dnf:
        name: check-mk-agent
        state: absent