-
Strip the .h extension from the user-provided header name to get {header} (e.g. soundwireclass.h → soundwireclass).
-
Resolve the user alias for branch naming ({user-alias}). The alias identifies who is submitting the PR, not who owns the APIs. Try these sources in order and use the first non-empty value:
a. The Windows username: $env:USERNAME.
b. The Azure CLI identity: az account show --query user.name -o tsv, extracting the alias portion before @.
-
Resolve paths. The user provides the CSV path. Derive the working and output directories:
$csvPath = "{user-provided CSV path}"
if (-not (Test-Path $csvPath)) {
Write-Error "CSV not found at $csvPath."
return
}
$workingDir = Split-Path $csvPath -Parent
$outputDir = Join-Path $workingDir "output"
$entries = Import-Csv $csvPath
If the CSV does not exist, inform the user and stop. Use the CSV entries to identify the API entities for the commit message and PR description.
-
Verify the output directory exists and contains files:
$outputFiles = Get-ChildItem -Path $outputDir -Filter "*.md" -ErrorAction SilentlyContinue
if (-not $outputFiles -or $outputFiles.Count -eq 0) {
Write-Error "No generated docs found in $outputDir. Run ai-docs-generate first."
return
}
-
Obtain ADO auth token. Try Azure CLI first, then fall back to prompting for a PAT:
try {
$token = (az account get-access-token --resource 499b84ac-1321-427f-aa17-267ca6975798 --query accessToken -o tsv 2>$null)
if (-not $token) { throw "No token" }
$headers = @{ Authorization = "Bearer $token"; "Content-Type" = "application/json" }
} catch {
$pat = Read-Host "Enter ADO PAT (scope: Code Read+Write, PR Contribute)"
$base64 = [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes(":$pat"))
$headers = @{ Authorization = "Basic $base64"; "Content-Type" = "application/json" }
}
$adoBase = "https://dev.azure.com/cpubwin/drivers/_apis/git/repositories"
-
Get the latest commit SHA on main. This is required as the oldObjectId for the push:
$refs = Invoke-RestMethod -Uri "$adoBase/wdk-ddi/refs?filter=heads/main&api-version=7.0" -Headers $headers
$mainSha = $refs.value[0].objectId
-
Determine change type for each file. Check which files already exist on main to set the correct changeType (add vs edit):
$mainFiles = Invoke-RestMethod -Uri "$adoBase/wdk-ddi/items?scopePath=wdk-ddi-src/content/{header}/&recursionLevel=OneLevel&versionDescriptor.version=main&versionDescriptor.versionType=branch&api-version=7.0" -Headers $headers
$existingNames = $mainFiles.value | ForEach-Object { Split-Path $_.path -Leaf }
-
Build the push payload. Read each output file, base64-encode its content, and create the change entries:
$changes = @()
foreach ($file in $outputFiles) {
$contentBytes = [System.IO.File]::ReadAllBytes($file.FullName)
$base64Content = [Convert]::ToBase64String($contentBytes)
$repoPath = "/wdk-ddi-src/content/{header}/$($file.Name)"
$changeType = if ($file.Name -in $existingNames) { "edit" } else { "add" }
$changes += @{
changeType = $changeType
item = @{ path = $repoPath }
newContent = @{
content = $base64Content
contentType = "base64encoded"
}
}
}
-
Generate the commit message. Use the CSV entries to list the API entity names:
Add/update API reference docs for {header}.h
Documented {N} API entities:
- {ApiName1} ({type})
- {ApiName2} ({type})
...
AI-assisted content generation.
-
Pause for human review. Display:
- List of files to be pushed with their change types (
add / edit)
- Total file count
- The generated commit message
- The target branch name:
{user-alias}/{header}-update
Prompt the user to confirm before proceeding.
-
Create or locate the branch. This step MUST be completed separately before the push in step 11. The branch must exist and point to a real commit on main before any push is attempted.
CRITICAL — Orphan commit prevention: The oldObjectId used in the push (step 11) determines the parent commit of the new commit. If oldObjectId is set to 0000000000000000000000000000000000000000 (all zeros), the ADO pushes API creates an orphan root commit with no parent. The resulting commit tree will contain ONLY the files in the changes array — all other repository files will appear as deletions in any PR diff. NEVER use all-zeros as oldObjectId in the pushes API. Always use $mainSha or the branch's current commit SHA.
First, check if the branch already exists:
$branchRef = Invoke-RestMethod -Uri "$adoBase/wdk-ddi/refs?filter=heads/{user-alias}/{header}-update&api-version=7.0" -Headers $headers
if ($branchRef.value.Count -gt 0) {
# Branch exists — use its current SHA
$branchSha = $branchRef.value[0].objectId
} else {
# Create the branch via the refs API (JSON array body)
$createBranchPayload = "[{`"name`":`"refs/heads/{user-alias}/{header}-update`",`"oldObjectId`":`"0000000000000000000000000000000000000000`",`"newObjectId`":`"$mainSha`"}]"
$refResult = Invoke-RestMethod -Uri "$adoBase/wdk-ddi/refs?api-version=7.0" -Method Post -Headers $headers -Body $createBranchPayload
$branchSha = $refResult.value[0].newObjectId
}
Important: The POST /refs endpoint requires the body to be a JSON array, not an object. Using ConvertTo-Json on a single hashtable wraps it in an {} object, which the API rejects. Either manually construct the JSON string or wrap the hashtable in @(...) and verify the output is [{...}].
Validate that $branchSha is a real commit SHA (40 hex chars, not all zeros) before proceeding:
if (-not $branchSha -or $branchSha -eq "0000000000000000000000000000000000000000") {
Write-Error "Branch SHA is null or all-zeros. Branch creation may have failed. Aborting."
return
}
Write-Host "Branch SHA for push: $branchSha"
-
Push the commit to the branch. The oldObjectId in refUpdates MUST be $branchSha (which equals $mainSha for a newly created branch). This tells ADO to create a new commit whose parent is $branchSha, inheriting all existing files from that commit's tree:
$pushBody = @{
refUpdates = @(
@{
name = "refs/heads/{user-alias}/{header}-update"
oldObjectId = $branchSha # MUST be a real SHA, never all-zeros
}
)
commits = @(
@{
comment = "<generated commit message>"
changes = $changes
}
)
} | ConvertTo-Json -Depth 10
$pushResult = Invoke-RestMethod -Uri "$adoBase/wdk-ddi/pushes?api-version=7.0" -Method Post -Headers $headers -Body $pushBody
Do NOT combine branch creation and push into a single pushes API call. Always create the branch first (step 10), then push to it (step 11).
-
Verify the push. Confirm the new commit has a parent (is not orphaned) by checking the commit details:
$newCommitId = $pushResult.commits[0].commitId
$commitDetail = Invoke-RestMethod -Uri "$adoBase/wdk-ddi/commits/$newCommitId?api-version=7.0" -Headers $headers
if (-not $commitDetail.parents -or $commitDetail.parents.Count -eq 0) {
Write-Error "FATAL: Push created an orphan commit (no parent). The branch must be deleted and recreated. This means oldObjectId was wrong."
# Clean up: delete the broken branch
$deletePayload = "[{`"name`":`"refs/heads/{user-alias}/{header}-update`",`"oldObjectId`":`"$($commitDetail.commitId)`",`"newObjectId`":`"0000000000000000000000000000000000000000`"}]"
Invoke-RestMethod -Uri "$adoBase/wdk-ddi/refs?api-version=7.0" -Method Post -Headers $headers -Body $deletePayload
Write-Error "Broken branch deleted. Please retry the submission."
return
}
Write-Host "Commit $newCommitId verified — parent: $($commitDetail.parents[0])"
-
Create a pull request targeting main:
$prBody = @{
sourceRefName = "refs/heads/{user-alias}/{header}-update"
targetRefName = "refs/heads/main"
title = "{user-alias}/{header}-update: API reference docs for {header}.h"
description = "<PR description with header name, API entity list, AI-assisted note>"
} | ConvertTo-Json
$prResult = Invoke-RestMethod -Uri "$adoBase/wdk-ddi/pullrequests?api-version=7.0" -Method Post -Headers $headers -Body $prBody
The PR description should include:
- Header name documented
- List of API entities with their types
- Note that content was AI-assisted (
ai-usage: ai-assisted metadata is set in each file)
-
Display the PR URL to the user:
$prUrl = "https://dev.azure.com/cpubwin/drivers/_git/wdk-ddi/pullrequest/$($prResult.pullRequestId)"
Write-Host "PR created: $prUrl"
-
Display Workflow completed confirming completion.
