name: windows_exporter CI/CD

# Trigger on pull requests and releases
# Deployments will only occur for releases (see `if` clauses in the build job).
on:
  pull_request:
    branches:
      - master
  release:
    types:
      - published
      - edited

permissions:
  contents: read
  packages: write
  
jobs:
  test:
    runs-on: windows-2019
    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-go@v2
        with:
          go-version: '^1.17.5'

      - name: Test
        run: make test

      - name: Install e2e deps
        run: |
          go get github.com/prometheus/promu@v0.11.1
          go get github.com/josephspurrier/goversioninfo/cmd/goversioninfo@v1.2.0
          # 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

  lint:
    runs-on: windows-2022
    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@v2
      - uses: actions/setup-go@v2
        with:
          go-version: '^1.17.5'

      - name: golangci-lint
        uses: golangci/golangci-lint-action@v2
        with:
          version: v1.43
          args: "--timeout=5m"

      # golangci-lint action doesn't always provide helpful output, so re-run without the action for
      # better output of the problem.
      # The cache from the golangci-lint step is re-used here, so this step should finish quickly.
      - name: errors
        if: ${{ failure() }}
        run: golangci-lint run --timeout=5m -c .golangci.yaml

  codespell:
    name: Check for spelling errors
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: codespell-project/actions-codespell@master
        with:
          check_filenames: true
          # When using this Action in other repos, the --skip option below can be removed
          skip: ./.git
          ignore_words_list: calle

  build:
    runs-on: windows-2022
    needs:
      - test
      - lint
      - codespell
    steps:
      - uses: actions/checkout@v2
        with:
          # fetch-depth required for gitversion in `Build` step
          fetch-depth: 0

      - uses: actions/setup-go@v2
        with:
          go-version: '^1.17.5'

      - name: Install Build deps
        run: |
          dotnet tool install --global GitVersion.Tool --version 5.*
          go get github.com/prometheus/promu@v0.11.1
          go get github.com/josephspurrier/goversioninfo/cmd/goversioninfo@v1.2.0
          # GOPATH\bin dir must be added to PATH else the `promu` and `goversioninfo` commands won't be found
          echo "$(go env GOPATH)\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append

      - name: Build
        run: |
          $ErrorActionPreference = "Stop"

          dotnet-gitversion /output json /showvariable FullSemVer | Set-Content VERSION -PassThru
          $Version = Get-Content VERSION
          # Windows versioninfo resources need the file version by parts (but product version is free text)
          $VersionParts = ($Version -replace '^v?([0-9\.]+).*$','$1').Split(".")
          goversioninfo.exe -ver-major $VersionParts[0] -ver-minor $VersionParts[1] -ver-patch $VersionParts[2] -product-version $Version -platform-specific

          make crossbuild
          make build-all
          # GH requires all files to have different names, so add version/arch to differentiate
          foreach($Arch in "amd64","386") {
            Move-Item output\$Arch\windows_exporter.exe output\windows_exporter-$Version-$Arch.exe
          }

      - name: Upload Artifacts
        uses: actions/upload-artifact@v2
        with:
          name: windows_exporter_binaries
          path: output\windows_exporter-*.exe

      - name: Build Release Artifacts
        if: startsWith(github.ref, 'refs/tags/')
        run: |
          $ErrorActionPreference = "Stop"
          $BuildVersion = Get-Content VERSION
          $TagName = $env:GITHUB_REF -replace 'refs/tags/', ''
          # The MSI version is not semver compliant, so just take the numerical parts
          $MSIVersion = $TagName -replace '^v?([0-9\.]+).*$','$1'
          foreach($Arch in "amd64","386") {
            Write-Verbose "Building windows_exporter $MSIVersion msi for $Arch"
            .\installer\build.ps1 -PathToExecutable .\output\windows_exporter-$BuildVersion-$Arch.exe -Version $MSIVersion -Arch "$Arch"
            Move-Item installer\Output\windows_exporter-$MSIVersion-$Arch.msi output\
          }

          promu checksum output\

      - name: Login to GitHub container registry
        if: startsWith(github.ref, 'refs/tags/')
        uses: docker/login-action@v1
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Push Latest image
        if: ${{ github.event_name != 'pull_request' }}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          VERSION=latest make push-all

      - name: Release
        if: startsWith(github.ref, 'refs/tags/')
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          $TagName = $env:GITHUB_REF -replace 'refs/tags/', ''
          Get-ChildItem -Path output\* -Include @('windows_exporter*.msi', 'windows_exporter*.exe', 'sha256sums.txt') | Foreach-Object {gh release upload $TagName $_}
          make push-all