parameters:
- name: Packages
  type: object
  default: {}
- name: LinuxImage
  type: string
  default: "ubuntu-latest"
- name: DotNetSdkVersion
  type: string
  default: 3.1.100

jobs:
  - job: CompatibilityCheck
    displayName: Compatibility Check
    pool:
      vmImage: "${{ parameters.LinuxImage }}"
    # only execute for pull requests
    condition: and(succeeded(), variables['System.PullRequest.PullRequestNumber'])
    strategy:
      matrix:
        ${{ each Package in parameters.Packages }}:
          ${{ Package.key }}:
            NugetPackageName: ${{ Package.value.NugetPackageName }}
            AssemblyFileName: ${{ Package.value.AssemblyFileName }}
      maxParallel: 2
    dependsOn: Build
    steps:
      - checkout: none

      - task: UseDotNet@2
        displayName: "Update DotNet"
        inputs:
          packageType: sdk
          version: ${{ parameters.DotNetSdkVersion }}

      - task: DotNetCoreCLI@2
        displayName: 'Install ABI CompatibilityChecker tool'
        inputs:
          command: custom
          custom: tool
          arguments: 'update compatibilitychecker -g'

      - task: DownloadPipelineArtifact@2
        displayName: "Download New Assembly Build Artifact"
        inputs:
          source: "current"
          artifact: "$(NugetPackageName)"
          path: "$(System.ArtifactsDirectory)/new-artifacts"
          runVersion: "latest"

      - task: CopyFiles@2
        displayName: "Copy New Assembly Build Artifact"
        inputs:
          sourceFolder: $(System.ArtifactsDirectory)/new-artifacts
          contents: "**/*.dll"
          targetFolder: $(System.ArtifactsDirectory)/new-release
          cleanTargetFolder: true
          overWrite: true
          flattenFolders: true

      - task: DownloadPipelineArtifact@2
        displayName: "Download Reference Assembly Build Artifact"
        inputs:
          source: "specific"
          artifact: "$(NugetPackageName)"
          path: "$(System.ArtifactsDirectory)/current-artifacts"
          project: "$(System.TeamProjectId)"
          pipeline: "$(System.DefinitionId)"
          runVersion: "latestFromBranch"
          runBranch: "refs/heads/$(System.PullRequest.TargetBranch)"

      - task: CopyFiles@2
        displayName: "Copy Reference Assembly Build Artifact"
        inputs:
          sourceFolder: $(System.ArtifactsDirectory)/current-artifacts
          contents: "**/*.dll"
          targetFolder: $(System.ArtifactsDirectory)/current-release
          cleanTargetFolder: true
          overWrite: true
          flattenFolders: true

      # The `--warnings-only` switch will swallow the return code and not emit any errors.
      - task: DotNetCoreCLI@2
        displayName: 'Execute ABI Compatibility Check Tool'
        inputs:
          command: custom
          custom: compat
          arguments: 'current-release/$(AssemblyFileName) new-release/$(AssemblyFileName) --azure-pipelines --warnings-only'
          workingDirectory: $(System.ArtifactsDirectory)