From 4dd8ef625df257dc5cbc8d80bdfd4a534810e304 Mon Sep 17 00:00:00 2001
From: DazedAnon <dazedanon@gmail.com>
Date: Sat, 7 Sep 2024 04:43:19 -0500
Subject: [PATCH] Add Patch.bat

---
 patch.bat | 105 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 patch.bat

diff --git a/patch.bat b/patch.bat
new file mode 100644
index 0000000..90ea09b
--- /dev/null
+++ b/patch.bat
@@ -0,0 +1,105 @@
+@echo off
+setlocal EnableExtensions EnableDelayedExpansion
+
+echo Checking for pwsh...
+set _my_shell=pwsh
+
+REM Check if pwsh.exe exists
+where /q !_my_shell!
+if !errorlevel! neq 0 (
+  echo pwsh not found. Falling back to powershell...
+  REM If pwsh is not found, set to powershell
+  set _my_shell=powershell
+
+  REM Check if powershell.exe exists
+  echo Checking for powershell...
+  where /q !_my_shell!
+  if !errorlevel! neq 0 (
+    echo.Error: Powershell not found!
+    pause
+    exit /B 1
+  ) else (
+    echo powershell found.
+  )
+) else (
+  echo pwsh found.
+)
+
+echo Using !_my_shell! for script execution.
+
+REM Check if patch-config.txt exists
+if not exist patch-config.txt (
+    echo "Config file (patch-config.txt) not found! Assuming no patching needed."
+    pause
+    exit /b
+)
+
+REM Read configuration from file
+for /f "tokens=1,2 delims==" %%a in (patch-config.txt) do (
+    if "%%a"=="username" set "username=%%b"
+    if "%%a"=="repo" set "repo=%%b"
+    if "%%a"=="branch" set "branch=%%b"
+)
+
+REM Get the latest hash
+echo "Getting latest commit SHA hash"
+!_my_shell! -Command "(Invoke-RestMethod -Uri 'https://gitgud.io/api/v4/projects/%username%%%2F%repo%/repository/branches/%branch%').commit.id" > latest_patch_sha.txt
+
+REM Read the latest SHA from the file
+set /p latest_patch_sha=<latest_patch_sha.txt
+
+REM Check if previous_patch_sha.txt exists
+if not exist previous_patch_sha.txt (
+    echo "Previous SHA hash not found!"
+    echo "Assuming first time patching..."
+    goto download_extract
+)
+
+REM Read the stored SHA from previous check
+set /p previous_patch_sha=<previous_patch_sha.txt
+
+REM Trim whitespace from SHA strings
+set "previous_patch_sha=%previous_patch_sha: =%"
+set "latest_patch_sha=%latest_patch_sha: =%"
+
+REM Compare trimmed SHAs
+if "%latest_patch_sha%" neq "%previous_patch_sha%" (
+    echo "Update found! Patching..."
+    goto download_extract
+) else (
+    echo "Patch is up to date."
+)
+
+REM Delete latest_patch_sha.txt
+del latest_patch_sha.txt
+
+endlocal
+pause
+exit /b
+
+:download_extract
+REM Download zip file
+echo "Downloading latest patch..."
+!_my_shell! -Command "Invoke-WebRequest -Uri 'https://gitgud.io/%username%/%repo%/-/archive/%branch%/%repo%-%branch%.zip' -OutFile 'repo.zip'"
+if !errorlevel! neq 0 (
+    pause
+    exit /b
+)
+
+REM Extract contents, overwriting conflicts
+echo "Extracting..."
+!_my_shell! -Command "Expand-Archive -Path '.\repo.zip' -DestinationPath '.' -Force"
+echo "Applying patch..."
+xcopy /s /e /y "%repo%-%branch%\*" "."
+
+REM Clean up
+echo "Cleaning up..."
+del repo.zip
+rmdir /s /q "%repo%-%branch%"
+del latest_patch_sha.txt
+
+REM Store latest SHA for next check
+echo %latest_patch_sha% > previous_patch_sha.txt
+endlocal
+pause
+exit /b