# Build MegaGlest on Windows.
# Author: James Sherratt.
param(${vcpkg-location})

$sword = [char]::ConvertFromUtf32(0x2694)
Write-Output "=====$sword MegaGlest $sword====="
""
<#
.SYNOPSIS
#

.DESCRIPTION
Test if a command exists.

.PARAMETER cmdName
Comamnd to test

.PARAMETER errorAdvice
Error advice to give user if command fails

.PARAMETER errorAction
(optional) Etion after error

.EXAMPLE
Test-Command "7z" "7z not found. Please install from 7zip.org" 'Write-Warning "7zip will not be used."'

.NOTES
General notes
#>
function Test-Command {
    param(
        $cmdName,
        $errorAdvice,
        $errorAction
    )

    if (Get-Command $cmdName -errorAction SilentlyContinue) {
        "Found $cmdName."
        ""
    }
    else {
        "The command '$cmdName' does not exist."
        "$errorAdvice"
        ""

        if ( !$errorAction ) {
            Exit
        }
        else {
            Invoke-Expression $errorAction
        }
    }
}

function Write-Title {
    param (
        $titleText
    )
    $titleText
    "-" * $titleText.Length
}

Write-Title "Updating git source"

Test-Command "git" "Please download and install git-scm https://git-scm.com/"
git pull
""

Write-Title "Setup vcpkg"
Test-Command "cmake" "Please download and install CMake: https://cmake.org/download/. (For 64 bit windows, select 'cmake-x.y.z-windows-x86_64.msi'.)"

if ( !${vcpkg-location} ) {
    ${vcpkg-location} = Join-Path $PSScriptRoot \vcpkg
    "Vcpkg location not set. Setting it to ${vcpkg-location}."
}
else {
    ${vcpkg-location} = $(Resolve-Path ${vcpkg-location}).ToString()
}

if ( Test-Path ${vcpkg-location} ) {
    "Found vcpkg."
}
else {
    "Vcpkg not found. Cloning. https://github.com/microsoft/vcpkg.git."
    git clone "https://github.com/microsoft/vcpkg.git" ${vcpkg-location}
    "Installing vcpkg."
    & "$(Join-Path ${vcpkg-location} bootstrap-vcpkg.bat)"
}

"Installing vcpkg and MegaGlest dependencies."
Set-Location ${vcpkg-location}
& "$(Join-Path $PSScriptRoot install-deps-vcpkg.ps1)"
if (!$?) {
    "Installing deps with vcpkg failed. Please check your vcpkg git repo is configured correctly."
    Set-Location $PSScriptRoot
    Exit
}
Set-Location $PSScriptRoot
""

Write-Title "Build MegaGlest"

$toolchainPath = $(Join-Path ${vcpkg-location} \scripts\buildsystems\vcpkg.cmake)
$buildFolder = $(Join-Path $PSScriptRoot build)
$topLevelTargetDir = $(Resolve-Path $(Join-Path $PSScriptRoot ../../)).ToString()

$vsVersion=(msbuild --version | select -Last 1).Split(".")[0] -as [int]

if ($vsVersion -eq 17) {
    $vsProjType = "Visual Studio 17 2022"
}
elseif ($vsVersion -eq 16) {
    $vsProjType = "Visual Studio 16 2019"
}
else {
    $vsProjType = "Visual Studio 17 2022"
}

cmake --no-warn-unused-cli -DCMAKE_TOOLCHAIN_FILE:STRING=$toolchainPath -DCMAKE_EXPORT_COMPILE_COMMANDS:BOOL=TRUE "-H$topLevelTargetDir" "-B$buildFolder" -G $vsProjType -T host=x64 -A x64
cmake --build $buildFolder --config Release --target ALL_BUILD


if ($?) {
    "Build succeeded. megaglest.exe, megaglest_editor.exe and megaglest_g3dviewer.exe can be found in mk/windoze/."
}
else {
    "Build failed. Please make sure you have installed VS C++ tools (2019 or 2022): https://visualstudio.microsoft.com/downloads ."
    "If you have installed all the relevant tools and you still can't build MegaGlest, try running '.\clean-build.ps1'. Then run this script again."
    "Make sure this script is running in developer powershell: https://docs.microsoft.com/en-us/visualstudio/ide/reference/command-prompt-powershell ."
    "If the language of your version of windows is not english, you may need to install the english language pack in the visual studio installer (because microsoft is racist): https://docs.microsoft.com/en-us/visualstudio/install/modify-visual-studio?view=vs-2022#modify-language-packs ."
    "If MegaGlest still fails to build, please help us by submitting a bug report at https://github.com/MegaGlest/megaglest-source/issues."
}