installer sample.bat

@echo off
setlocal

call :init
set /a "error_status=%errorlevel%"
if %error_status% neq 0 exit /b %error_status%

set /a "i=0"
:copy_options
    set "option=%~1"
    if defined option (
        set "args[%i%]=%option%"
        shift
        set /a "i+=1"
        goto copy_options
    )
set /a "args_count=i"

set /a "i=0"
:main_loop
    set /a "j=i + 1"
    call set "option=%%args[%i%]%%"
    call set "value=%%args[%j%]%%"

    if %i% geq %args_count% goto main_loop_break

    set /a "is___version=FALSE"

    if "%option%" == "--version" set /a "is___version=TRUE"
    if "%option%" == "-v" set /a "is___version=TRUE"

    if %is___version% equ %TRUE% (
        call :__version_handler
        exit /b %SUCCESS_EC%
    )

    set /a "is___help=FALSE"

    if "%option%" == "--help" set /a "is___help=TRUE"
    if "%option%" == "-h" set /a "is___help=TRUE"

    if %is___help% equ %TRUE% (
        call :__help_handler
        exit /b %SUCCESS_EC%
    )

    set /a "is___uninstall=FALSE"

    if "%option%" == "--uninstall" set /a "is___uninstall=TRUE"
    if "%option%" == "-u" set /a "is___uninstall=TRUE"

    if %is___uninstall% equ %TRUE% (
        set /a "is_uninstall=TRUE"
        set /a "i+=1"
        goto main_loop
    )

    echo %WRONG_OPTION_SPECIFIED_MSG%
    exit /b %WRONG_OPTION_SPECIFIED_EC%

:main_loop_break
if %is_uninstall% equ %TRUE% (
    if not exist "%directory%" (
       echo %BATCHTEMPLATE_IS_NOT_INSTALLED_MSG%
       exit /b %BATCHTEMPLATE_IS_NOT_INSTALLED_EC%
    )
    setlocal enabledelayedexpansion
    call setx PATH "%%PATH:%directory%=%%" > nul
    echo y| rd /s "%directory%" 2> nul > nul
    set /a "error_status=!errorlevel!"
    if !error_status! equ 0 (
        echo batchtemplate successfully uninstalled from %directory%.
    ) else (
        echo Unexpected error uccured. Possibly there is no access to %directory% folder or another process uses it. Please run installer as admin and kill processes use %directory% folder.
    )
    exit /b !error_status!
)

if exist "%directory%" (
    setlocal enabledelayedexpansion
    choice /m "Do you want reinstall batchtemplate in %directory%?"
    set /a "answer=!errorlevel!"
    if !answer! equ 2 (
        echo %BATCHTEMPLATE_REINSTALL_REJECTED_MSG%
        exit /b %BATCHTEMPLATE_REINSTALL_REJECTED_EC%
    )
    if !answer! equ 1 (
        echo y| rd /q /s "%directory%" 2> nul > nul
        set /a "error_status=!errorlevel!"
        if !error_status! neq 0 (
            echo Unexpected error uccured. Possibly there is no access to %directory% folder or another process uses it. Please run installer as admin and kill processes use %directory% folder.
            exit /b !error_status!
        )
    )
)

mkdir "%directory%"
chdir "%directory%"

certutil -decode "%self%" "%archive_name%" > nul
7z x "%archive_name%" > nul
setx PATH "%directory%;%PATH%" > nul
del /q "%archive_name%"
exit /b %SUCCESS_EC%

:init
    set /a "SUCCESS_EC=0"
    set /a "WRONG_OPTION_SPECIFIED_EC=1"
    set /a "SEVENZ_COMMAND_NOT_FOUND_EC=2"
    set /a "BATCHTEMPLATE_IS_NOT_INSTALLED_EC=3"
    set /a "BATCHTEMPLATE_REINSTALL_REJECTED_EC=4"

    set "WRONG_OPTION_SPECIFIED_MSG=Option you've passed is not recognized."
    set "SEVENZ_COMMAND_NOT_FOUND_MSG=7z command isn't found. Please install 7-Zip archiver."
    set "BATCHTEMPLATE_IS_NOT_INSTALLED_MSG=batchtemplate isn't installed to uninstall it."
    set "BATCHTEMPLATE_REINSTALL_REJECTED_MSG=batchtemplate reinstall is rejected."

    set /a "TRUE=0"
    set /a "FALSE=1"

    set "self=%~f0"
    set "directory=C:\Program Files\AlvinSeville7cfSoft\batchtemplate\"
    set "temp=temp.txt"
    set "archive_name=release.7z"

    set /a "is_uninstall=FALSE"
    7z --help 2> nul > nul || (
       echo %SEVENZ_COMMAND_NOT_FOUND_MSG%
       exit /b %SEVENZ_COMMAND_NOT_FOUND_EC%
    )
exit /b %SUCCESS_EC%

:__version_handler
    echo 1.0 - 2021
exit /b %SUCCESS_EC%

:__help_handler
    echo Description:
    echo    Installes or uninstalles batchtemplate script.
    echo.
    echo Syntax:
    echo    - installer.bat [options]
    echo.
    echo Options:
    echo    - -u^|--uninstall - specifies whether uninstallation is performed instead of installation
    echo.
    echo Examples:
    echo    installer.bat --version
    echo    installer.bat
    echo    installer.bat --uninstall
    echo.
    echo Author:
    echo    Alvin Seville ^<AlvinSeville7cf@gmail.com^>
exit /b %SUCCESS_EC%

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