name: Linting

# Trigger on pull requests and pushes to master branch where Go-related files
# have been changed.
on:
  push:
    branches:
      - master
      - next
      - main
      - "0.*"
      - "1.*"
  pull_request:

env:
  VERSION_PROMU: '0.14.0'
  PROMTOOL_VER: '2.43.0'

jobs:
  test:
    runs-on: windows-2025
    steps:
      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
      - uses: actions/setup-go@0aaccfd150d50ccaeb58ebd88d36e91967a5f35b # v5.4.0
        with:
          go-version-file: 'go.mod'

      - name: Test
        run: make test

      - name: Install e2e deps
        run: |
          Invoke-WebRequest -Uri https://github.com/prometheus/promu/releases/download/v$($Env:VERSION_PROMU)/promu-$($Env:VERSION_PROMU).windows-amd64.zip -OutFile promu-$($Env:VERSION_PROMU).windows-amd64.zip
          Expand-Archive -Path promu-$($Env:VERSION_PROMU).windows-amd64.zip -DestinationPath .
          Copy-Item -Path promu-$($Env:VERSION_PROMU).windows-amd64\promu.exe -Destination "$(go env GOPATH)\bin"

          # GOPATH\bin dir must be appended to PATH else the `promu` command won't be found
          echo "$(go env GOPATH)\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append

      - name: e2e Test
        run: make e2e-test

  promtool:
    runs-on: windows-2025
    steps:
      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
      - uses: actions/setup-go@0aaccfd150d50ccaeb58ebd88d36e91967a5f35b # v5.4.0
        with:
          go-version-file: 'go.mod'

      - name: Install promtool
        run: |
          Invoke-WebRequest -Uri https://github.com/prometheus/prometheus/releases/download/v$($Env:PROMTOOL_VER)/prometheus-$($Env:PROMTOOL_VER).windows-amd64.zip -OutFile prometheus-$($Env:PROMTOOL_VER).windows-amd64.zip
          Expand-Archive -Path prometheus-$($Env:PROMTOOL_VER).windows-amd64.zip -DestinationPath .
          Copy-Item -Path prometheus-$($Env:PROMTOOL_VER).windows-amd64\promtool.exe -Destination "$(go env GOPATH)\bin"

          Invoke-WebRequest -Uri https://github.com/prometheus/promu/releases/download/v$($Env:VERSION_PROMU)/promu-$($Env:VERSION_PROMU).windows-amd64.zip -OutFile promu-$($Env:VERSION_PROMU).windows-amd64.zip
          Expand-Archive -Path promu-$($Env:VERSION_PROMU).windows-amd64.zip -DestinationPath .
          Copy-Item -Path promu-$($Env:VERSION_PROMU).windows-amd64\promu.exe -Destination "$(go env GOPATH)\bin"

          # GOPATH\bin dir must be appended to PATH else the `promu` command won't be found
          echo "$(go env GOPATH)\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append

      - name: Promtool
        run: make promtool

      - name: Upload windows_exporter.exe
        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
        if: always()
        with:
          name: windows_exporter.amd64.exe
          path: 'windows_exporter.exe'
          retention-days: 7
          if-no-files-found: error

  lint:
    runs-on: windows-2025
    steps:
      # `gofmt` linter run by golangci-lint fails on CRLF line endings (the default for Windows)
      - name: Set git to use LF
        run: |
          git config --global core.autocrlf false
          git config --global core.eol lf

      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
      - uses: actions/setup-go@0aaccfd150d50ccaeb58ebd88d36e91967a5f35b # v5.4.0
        with:
          go-version-file: 'go.mod'

      - name: golangci-lint
        uses: golangci/golangci-lint-action@4afd733a84b1f43292c63897423277bb7f4313a9 # v8.0.0
        with:
          # renovate: github=golangci/golangci-lint
          version: v2.1.6
          args: "--max-same-issues=0"