Powershell script that queries TeamCity for pending changes and generates a html release file with author, number of files changed, git comment and urls to matched Jira issues.

TeamCityPendingChanges.ps1

param(
[string]$TC, #%teamcity.serverUrl%
[string]$TC_build_Id, #system.teamcity.buildType.id
[string]$outputFileName) #Output file name
 
$TC += "/guestAuth" #TeamCity needs to be running with the guest account enabled.
$url = "$($TC)/app/rest/changes?locator=buildType:(id:$($TC_build_Id)),pending:true" #Get pending changes for a build configuration
$JiraUrl = "http://yourjiraurl.com/"
 
function GetChangeDetailsUrl($changesXml)
{
    $changeIds = @()
    Foreach ($Change in $changesXml.changes.change)
    {
                    $changeIds += ,@("$($TC)/app/rest/changes/id:$($Change.id)")             
    }
    return $changeIds
}
 
function wrapJiraIssuesInHref ($content)
{
    #https://community.atlassian.com/t5/Bitbucket-questions/Regex-pattern-to-match-JIRA-issue-key/qaq-p/233319
                $issueNumber = $content -replace "((?<!([A-Za-z]{1,10})-?)[A-Z]+-\d+)","<a href=`"$($JiraUrl)`$1`">`$1</a>"
    return $issueNumber
}
 
function GetFormattedChangeInfo($changeDetailsXml)
{
   $parsedMessage = wrapJiraIssuesInHref $changeDetailsXml.change.comment
   $result = "<font color='red'><b>Author:</b></font> $($changeDetailsXml.change.user.username)"
   $result += "<br/><b>Message:</b> <br/> $($parsedMessage)"
   $result += "<b>Files Changed:</b> $($changeDetailsXml.change.files.count)"
   $result += "<br><b>Commit:</b> $($changeDetailsXml.change.version)<br/><br/>"
   $result = $result -replace "`n","</br>" -replace "`r","</br>"
   return $result
}
 
$result = "<div style='font-family:Arial, Helvetica, sans-serif;font-size:9pt'>"
$pendingChangesXml = [xml](Invoke-RestMethod $url)
$changeDetailLinks = GetChangeDetailsUrl($pendingChangesXml)
 
 
If ($changeDetailLinks.Count -eq 0)
{
                $result += "This build contains no new code changes."
}
 
 
Foreach ($link in $changeDetailLinks)
{
    $changeDetailsXml = [xml](Invoke-RestMethod ( $link | out-string ))
    $line = GetFormattedChangeInfo $changeDetailsXml
    $result += "$($line)"
}
 
$result +="</div>"
 
New-Item $outputFileName  -Type file -Force -Value $result