Add requirement checks and installation in launchers

Author: lzhoang2801

OpCore-Simplify.bat

@@ -299,9 +299,56 @@ if /i "!just_installing!" == "TRUE" (
 )
 exit /b
 
+:checkrequirements
+REM Check and install Python requirements
+set "requirements_file=!thisDir!requirements.txt"
+if not exist "!requirements_file!" (
+    echo Warning: requirements.txt not found. Skipping dependency check.
+    exit /b 0
+)
+echo Checking Python dependencies...
+"!pypath!" -m pip --version > nul 2>&1
+set "pip_check_error=!ERRORLEVEL!"
+if not "!pip_check_error!" == "0" (
+    echo Warning: pip is not available. Attempting to install pip...
+    "!pypath!" -m ensurepip --upgrade > nul 2>&1
+    set "ensurepip_error=!ERRORLEVEL!"
+    if not "!ensurepip_error!" == "0" (
+        echo Error: Could not install pip. Please install pip manually.
+        exit /b 1
+    )
+)
+REM Try to import key packages to check if they're installed
+"!pypath!" -c "import PyQt6; import qfluentwidgets" > nul 2>&1
+set "import_check_error=!ERRORLEVEL!"
+if not "!import_check_error!" == "0" (
+    echo Installing required packages from requirements.txt...
+    "!pypath!" -m pip install --upgrade -r "!requirements_file!"
+    set "pip_install_error=!ERRORLEVEL!"
+    if not "!pip_install_error!" == "0" (
+        echo.
+        echo Error: Failed to install requirements. Please install them manually:
+        echo   !pypath! -m pip install -r !requirements_file!
+        echo.
+        echo Press [enter] to exit...
+        pause > nul
+        exit /b 1
+    )
+    echo Requirements installed successfully.
+) else (
+    echo All requirements are already installed.
+)
+exit /b 0
+
 :runscript
 REM Python found
 cls
+REM Check and install requirements before running the script
+call :checkrequirements
+set "req_check_error=!ERRORLEVEL!"
+if not "!req_check_error!" == "0" (
+    exit /b 1
+)
 set "args=%*"
 set "args=!args:"=!"
 if "!args!"=="" (

OpCore-Simplify.command

@@ -283,6 +283,42 @@ prompt_and_download() {
     done
 }
 
+check_and_install_requirements() {
+    local python="$1"
+    local requirements_file="$dir/requirements.txt"
+    
+    # Check if requirements.txt exists
+    if [ ! -f "$requirements_file" ]; then
+        echo "Warning: requirements.txt not found. Skipping dependency check."
+        return 0
+    fi
+    
+    # Check if pip is available
+    if ! "$python" -m pip --version > /dev/null 2>&1; then
+        echo "Warning: pip is not available. Attempting to install pip..."
+        if ! "$python" -m ensurepip --upgrade > /dev/null 2>&1; then
+            echo "Error: Could not install pip. Please install pip manually."
+            return 1
+        fi
+    fi
+    
+    # Check if requirements are installed by trying to import key packages
+    echo "Checking Python dependencies..."
+    if ! "$python" -c "import PyQt6; import qfluentwidgets" > /dev/null 2>&1; then
+        echo "Installing required packages from requirements.txt..."
+        if ! "$python" -m pip install --upgrade -r "$requirements_file"; then
+            echo "Error: Failed to install requirements. Please install them manually:"
+            echo "  $python -m pip install -r $requirements_file"
+            return 1
+        fi
+        echo "Requirements installed successfully."
+    else
+        echo "All requirements are already installed."
+    fi
+    
+    return 0
+}
+
 main() {
     local python= version=
     # Verify our target exists
@@ -310,6 +346,11 @@ main() {
         prompt_and_download
         return 1
     fi
+    # Check and install requirements before running the script
+    if ! check_and_install_requirements "$python"; then
+        echo "Failed to install requirements. Exiting."
+        exit 1
+    fi
     # Found it - start our script and pass all args
     "$python" "$dir/$target" "${args[@]}"
 }