From c59f977800c1cfe5044ff0fb9d79ba2c50f9b88d Mon Sep 17 00:00:00 2001
From: Azure SDK Bot <53356347+azure-sdk@users.noreply.github.com>
Date: Fri, 8 Jan 2021 15:57:03 -0800
Subject: [PATCH] Revert "Remove old Update-Change-Log.ps1 (#1301)" (#17864)

This reverts commit b967cb62bd8db451a2f02d903f3658cf21f92db1.

Co-authored-by: Chidozie Ononiwu <31145988+chidozieononiwu@users.noreply.github.com>
---
 eng/common/Update-Change-Log.ps1        | 153 ++++++++++++++++++++++++
 eng/common/scripts/Update-ChangeLog.ps1 |   6 +-
 2 files changed, 156 insertions(+), 3 deletions(-)
 create mode 100644 eng/common/Update-Change-Log.ps1

diff --git a/eng/common/Update-Change-Log.ps1 b/eng/common/Update-Change-Log.ps1
new file mode 100644
index 000000000000..3d1497f29863
--- /dev/null
+++ b/eng/common/Update-Change-Log.ps1
@@ -0,0 +1,153 @@
+# Note: This script will add or replace version title in change log
+
+# Parameter description
+# Version : Version to add or replace in change log
+# ChangeLogPath: Path to change log file. If change log path is set to directory then script will probe for change log file in that path 
+# Unreleased: Default is true. If it is set to false, then today's date will be set in verion title. If it is True then title will show "Unreleased"
+# ReplaceVersion: This is useful when replacing current version title with new title.( Helpful to update the title before package release)
+
+param (
+  [Parameter(Mandatory = $true)]
+  [String]$Version,
+  [Parameter(Mandatory = $true)]
+  [String]$ChangeLogPath,
+  [String]$Unreleased = $True,
+  [String]$ReplaceVersion = $False,
+  [String]$ReleaseDate
+)
+
+
+$RELEASE_TITLE_REGEX = "(?<releaseNoteTitle>^\#+.*(?<version>\b\d+\.\d+\.\d+([^0-9\s][^\s:]+)?))"
+$UNRELEASED_TAG = "(Unreleased)"
+function Version-Matches($line)
+{
+    return ($line -match $RELEASE_TITLE_REGEX)
+}
+
+function Get-ChangelogPath($Path)
+{ 
+   # Check if CHANGELOG.md is present in path 
+   $ChangeLogPath = Join-Path -Path $Path -ChildPath "CHANGELOG.md"
+   if ((Test-Path -Path $ChangeLogPath) -eq $False) {
+      # Check if change log exists with name HISTORY.md
+      $ChangeLogPath = Join-Path -Path $Path -ChildPath "HISTORY.md"
+      if ((Test-Path -Path $ChangeLogPath) -eq $False) {
+         Write-Host "Change log is not found in path[$Path]"
+         exit(1)
+      }
+   }
+  
+   Write-Host "Change log is found at path [$ChangeLogPath]"
+   return $ChangeLogPath
+}
+
+
+function Get-VersionTitle($Version, $Unreleased)
+{
+   # Generate version title
+   $newVersionTitle = "## $Version $UNRELEASED_TAG"
+   if ($Unreleased -eq $False) {
+      $actualReleaseDate = $ReleaseDate;
+
+      if (!$actualReleaseDate) {
+         $actualReleaseDate = Get-Date -Format "yyyy-MM-dd"
+      }
+      $newVersionTitle = "## $Version ($actualReleaseDate)"
+   }
+   return $newVersionTitle
+}
+
+
+function Get-NewChangeLog( [System.Collections.ArrayList]$ChangelogLines, $Version, $Unreleased, $ReplaceVersion)
+{
+
+   # version parameter is to pass new version to add or replace
+   # Unreleased parameter can be set to False to set today's date instead of "Unreleased in title"
+   # ReplaceVersion param can be set to true to replace current version title( useful at release time to change title)
+
+   # find index of current version
+   $Index = 0
+   $CurrentTitle = ""
+   $CurrentIndex = 0
+   # Version increment tool passes replaceversion as False and Unreleased as True
+   $is_version_increment = $ReplaceVersion -eq $False -and $Unreleased -eq $True
+
+   for (; $Index -lt $ChangelogLines.Count; $Index++) {
+      if (Version-Matches($ChangelogLines[$Index])) {
+         # Find current title in change log
+         if( -not $CurrentTitle) {
+            $CurrentTitle = $ChangelogLines[$Index]
+            $CurrentIndex = $Index
+            Write-Host "Current Version title: $CurrentTitle"
+         }
+
+         # Ensure change log doesn't have new version when incrementing version
+         # update change log script is triggered for all packages with current version for Java ( or any language where version is maintained in common file)
+         # and this can cause an issue if someone changes changelog manually to prepare for release without updating actual version in central version file
+         # Do not add new line or replace existing title when version is already present and script is triggered to add new line
+         if ($is_version_increment -and $ChangelogLines[$Index].Contains($Version)) {
+            Write-Host "Version is already present in change log."
+            exit(0)
+         }
+      }
+   }
+
+   # Generate version title
+   $newVersionTitle = Get-VersionTitle -Version $Version -Unreleased $Unreleased
+
+   if( $newVersionTitle -eq $CurrentTitle) {
+      Write-Host "No change is required in change log. Version is already present."
+      exit(0)
+   }
+
+   if (($ReplaceVersion -eq $True) -and ($Unreleased -eq $False) -and $CurrentTitle.Contains($version) -and (-not $CurrentTitle.Contains($UNRELEASED_TAG)) -and (-not $ReleaseDate)) {
+      Write-Host "Version is already present in change log with a release date."
+      exit(0)
+   }
+
+   # if current version title already has new version then we should replace title to update it
+   if ($CurrentTitle.Contains($Version) -and $ReplaceVersion -eq $False) {
+      Write-Host "Version is already present in title. Updating version title"
+      $ReplaceVersion = $True
+   }
+
+   # if version is already found and not replacing then nothing to do
+   if ($ReplaceVersion -eq $False) {
+      Write-Host "Adding version title $newVersionTitle"
+      $ChangelogLines.insert($CurrentIndex, "")
+      $ChangelogLines.insert($CurrentIndex, "")
+      $ChangelogLines.insert($CurrentIndex, $newVersionTitle)
+   }
+   else{
+      # Script is executed to replace an existing version title
+      Write-Host "Replacing current version title to $newVersionTitle"
+      $ChangelogLines[$CurrentIndex] = $newVersionTitle
+   }
+
+   return $ChangelogLines
+}
+
+
+# Make sure path is valid
+if ((Test-Path -Path $ChangeLogPath) -eq $False) {
+   Write-Host "Change log path is invalid. [$ChangeLogPath]"
+   exit(1)
+}
+
+# probe change log path if path is directory 
+if (Test-Path -Path $ChangeLogPath -PathType Container) {
+   $ChangeLogPath = Get-ChangelogPath -Path $ChangeLogPath
+}
+
+# Read current change logs and add/update version
+$ChangelogLines = [System.Collections.ArrayList](Get-Content -Path $ChangeLogPath)
+
+if ($null -eq $ChangelogLines) { 
+   $ChangelogLines = @() 
+}
+
+$NewContents = Get-NewChangeLog -ChangelogLines $ChangelogLines -Version $Version -Unreleased $Unreleased -ReplaceVersion $ReplaceVersion
+
+Write-Host "Writing change log to file [$ChangeLogPath]"
+Set-Content -Path $ChangeLogPath $NewContents
+Write-Host "Version is added/updated in change log"
diff --git a/eng/common/scripts/Update-ChangeLog.ps1 b/eng/common/scripts/Update-ChangeLog.ps1
index 7004bd5c4e5b..8f7c88e51cd2 100644
--- a/eng/common/scripts/Update-ChangeLog.ps1
+++ b/eng/common/scripts/Update-ChangeLog.ps1
@@ -12,8 +12,8 @@ param (
   [String]$ServiceDirectory,
   [Parameter(Mandatory = $true)]
   [String]$PackageName,
-  [String]$Unreleased = "true", #Argument is string becasue of the different ways the script is called in the various repos.
-  [String]$ReplaceLatestEntryTitle = "false",
+  [String]$Unreleased=$True,
+  [String]$ReplaceLatestEntryTitle = $False,
   [String]$ReleaseDate
 )
 
@@ -23,7 +23,7 @@ param (
 . (Join-Path $PSScriptRoot common.ps1)
 
 if ($ReleaseDate -and $Unreleased) {
-    LogError "Do not pass 'ReleaseDate' argument when 'Unreleased' is true"
+    LogError "Do not pass 'ReleaseDate' arguement when 'Unreleased' is true"
     exit 1
 }