# Copyright (c) .NET Foundation and Contributors
# See LICENSE file in the project root for full license information.

trigger:
  branches:
    include:
      - main
  paths:
    exclude:
      - .gitignore
      - CODE_OF_CONDUCT.md
      - LICENSE.md
      - README.md
      - README.zh-cn.md
      - NuGet.Config
      - .github/*

# PR always trigger build
pr:
  autoCancel: true

# add nf-tools repo to resources (for Azure Pipelines templates)
resources:
  repositories:
    - repository: templates
      type: github
      name: nanoframework/nf-tools
      endpoint: nanoframework

pool:
  vmImage: 'windows-latest'

variables:
  DOTNET_NOLOGO: true

steps:

# need this here in order to persist GitHub credentials 
# only need the latest commit
- checkout: self
- checkout: templates
  fetchDepth: 1

- script: |
    git config --global user.email 'nanoframework@outlook.com'
    git config --global user.name 'nfbot'
    git config --global core.autocrlf true
  displayName: Setup git identity

- task: UseDotNet@2
  displayName: Install .NET SDK
  inputs:
    packageType: sdk
    version: 6.x

- template: azure-pipelines-templates/install-nuget.yml@templates

- task: InstallNanoMSBuildComponents@1
  displayName: Install nanoFramework MSBuild components
  env:
    GITHUB_TOKEN: $(GitHubToken)

# only build solutions that need to be build
- powershell: |
    # setup msbuild
    $vswhere = "${env:ProgramFiles(x86)}\Microsoft Visual Studio\Installer\vswhere.exe"
    $msbuild = & $vswhere -latest -products * -requires Microsoft.Component.MSBuild -property installationPath

    if ($msbuild) {
      $msbuild = join-path $msbuild 'MSBuild\Current\Bin\amd64\MSBuild.exe'
    }

    # compute authorization header in format "AUTHORIZATION: basic 'encoded token'"
    # 'encoded token' is the Base64 of the string "nfbot:personal-token"
    $auth = "basic $([System.Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes("nfbot:${env:MY_GITHUBTOKEN}"))))"

    if($env:System_PullRequest_PullRequestId -ne $null)
    {
        "" | Write-Host -ForegroundColor Yellow
        "**********************" | Write-Host -ForegroundColor Yellow
        "* Building from a PR *" | Write-host -ForegroundColor Yellow
        "**********************" | Write-Host -ForegroundColor Yellow
        "" | Write-Host -ForegroundColor Yellow

        # get files changed in PR, if this is a PR
        # can get max of 100 files using this method (for more requires paging)
        $commit = Invoke-RestMethod -Uri "https://api.github.com/repos/nanoframework/Samples/pulls/$env:System_PullRequest_PullRequestNumber/files?per_page=100" -Header @{"Authorization"="$auth"} -ContentType "application/json" -Method GET

        # filter removed files              
        $files = $commit.where{$_.status -ne 'removed'}
    }
    else
    {
        "" | Write-Host -ForegroundColor Yellow
        "**************************" | Write-Host -ForegroundColor Yellow
        "* Building from a commit *" | Write-host -ForegroundColor Yellow
        "**************************" | Write-Host -ForegroundColor Yellow
        "" | Write-Host -ForegroundColor Yellow

        # get files changed in the commit, if this is NOT a PR
        $commit = Invoke-RestMethod -Uri "https://api.github.com/repos/nanoframework/Samples/commits/$(Build.SourceVersion)" -Header @{"Authorization"="$auth"} -ContentType "application/json" -Method GET

        # filter removed files              
        $files = $commit.files.where{$_.status -ne 'removed'}
    }

    # get file names only
    $files1 = $files | % {$_.filename} | Where-Object {$_ -match 'samples/*'} 

    if($null -eq $files1)
    {
        Write-host "No 'samples' found to build"
        exit
    }

    Write-host "Files changed:"
    $files1 | % { Write-host $_ }
    Write-host ""

    # pattern to select samples folder name
    $pattern = '(samples\/)(?<folder>[a-zA-Z0-9._]+)(?>\/)'

    # filter out the collection
    $results = [Regex]::Matches($files1, $pattern)

    # get unique folder names
    $sampleFolders = $results | Sort-Object | Select-Object | Foreach-Object {$_.Groups["folder"].Value} | Get-Unique 

    Write-host "Found $($sampleFolders.count) sample(s) to build"

    foreach ($folder in $sampleFolders)
    {
      try
      {
        "" | Write-Host -ForegroundColor Yellow
        "***********************" | Write-Host -ForegroundColor Yellow
        "Processing sample '$folder'..." | Write-Host -ForegroundColor Yellow
        "***********************" | Write-Host -ForegroundColor Yellow
        "" | Write-Host -ForegroundColor Yellow
        
        # try to find all solution files
        $solutionFiles = Get-ChildItem -Path "samples\$folder\" -Include "*.sln" -Recurse

        if($null -eq $solutionFiles)
        {
            "Couldn't find any solution file!"  | Write-Host -ForegroundColor Red
            throw "Couldn't find any solution file inside '$folder'..."
        }
        else
        {
            foreach ($sln in $solutionFiles)
            {
                "" | Write-Host -ForegroundColor Yellow
                "INFO: Building solution: '$sln'" | Write-Host -ForegroundColor Yellow
                "" | Write-Host -ForegroundColor Yellow
                        
                # need to restore NuGets first
                nuget restore $sln
                if (-not $?) { throw "Error restoring '$sln'" }

                # build solution
                & "$msbuild" "$sln" /verbosity:normal /p:Configuration=Release
                if (-not $?) { throw "Error building '$sln'" }
            }
        }
      }
      catch
      {
          "" | Write-Host -ForegroundColor Red
          "*****************************************" | Write-Host -ForegroundColor Red
          ">>>ERROR: build failed, check output <<<"  | Write-Host -ForegroundColor Red
          "*****************************************" | Write-Host -ForegroundColor Red
          "" | Write-Host -ForegroundColor Red

          "" | Write-Host -ForegroundColor Red
          "Eception was: $_" | Write-Host -ForegroundColor Red
          "" | Write-Host -ForegroundColor Red

          # set flag
          $buildFailed = $true
      }
    }
  displayName: Build solutions
  workingDirectory: 'Samples'
  env:
    MY_GITHUBTOKEN: $(GitHubToken)

# Adjust the readmes
- task: DotNetCoreCLI@2
  displayName: Adjust READMEs
  condition: >-
    and(
      succeeded(),
      eq(variables['System.PullRequest.PullRequestId'], '')
    )
  inputs:
    command: custom
    custom: run
    projects: '**/device-listing.csproj'
    workingDirectory: 'Samples'

- task: PowerShell@2
  condition: >-
    and(
      succeeded(),
      eq(variables['System.PullRequest.PullRequestId'], '')
    )
  displayName: Push READMEs to GitHub
  continueOnError: true
  inputs:
    targetType: 'inline'
    workingDirectory: 'Samples'
    script: |
      git add README.md
      git add README.zh-cn.md
      git commit -m "Update READMEs" -m"***NO_CI***"

      Write-Host "Rebasing..."
      
      git rebase origin/main

      Write-Host "Pushing READMEs to $(Build.SourceBranchName)"

      # compute authorization header in format "AUTHORIZATION: basic 'encoded token'"
      # 'encoded token' is the Base64 of the string "nfbot:personal-token"
      $auth = "basic $([System.Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes("nfbot:$(GitHubToken)"))))"
      git -c http.extraheader="AUTHORIZATION: $auth" push origin "HEAD:$(Build.SourceBranchName)"

# report error
- template: azure-pipelines-templates/discord-webhook-task.yml@templates  
  parameters:
    status: 'failure'
    webhookUrl: '$(DiscordWebhook)'
    message: ''