Add TDLib as submodule

Author: FrayxRulez

.gitmodules

@@ -19,3 +19,6 @@
 [submodule "Libraries/vlc/vlc"]
 	path = Libraries/vlc/vlc
 	url = https://github.com/videolan/vlc.git
+[submodule "Libraries/tdlib"]
+	path = Libraries/tdlib
+	url = https://github.com/tdlib/td.git

Documentation/Build-instructions.md

@@ -61,13 +61,12 @@ You can choose to install both `x64` and `arm64` or just opt for the architectur
 
 ### TDLib
 In order to communicate with Telegram servers, Unigram uses TDLib.
-Here is complete instruction for TDLib binaries building, taken from the official [documentation](https://tdlib.github.io/td/build.html?language=C%23):
+Here is complete instruction for TDLib binaries building:
 
 - Download and install Microsoft Visual Studio. Enable C++ and Windows 10 SDK support while installing.
 - Download and install CMake; choose "Add CMake to the system PATH" option while installing.
 - Download and install Git.
 - Download and unpack PHP. Add the path to php.exe to the PATH environment variable.
-- Download and install 7-Zip archiver. Add the path to 7z.exe to the PATH environment variable.
 - Close and re-open PowerShell if the PATH environment variable was changed.
 - Run these commands in PowerShell to build TDLib and to install it to td/tdlib:
 

Libraries/tdjson/build.ps1

@@ -0,0 +1,110 @@
+param (
+  [string]$vcpkg_root = $(throw "-vcpkg_root=<path to vcpkg> is required"),
+  [ValidateSet('x86', 'x64', 'ARM', 'ARM64', IgnoreCase = $false)]
+  [string[]]$arch = @( "x86", "x64", "ARM", "ARM64" ),
+  [string]$mode = "all"
+)
+$ErrorActionPreference = "Stop"
+
+$vcpkg_root = Resolve-Path $vcpkg_root
+
+$vcpkg_cmake="${vcpkg_root}\scripts\buildsystems\vcpkg.cmake"
+$arch_list = $arch
+$td_root = Resolve-Path "../tdlib"
+
+function CheckLastExitCode {
+  if ($LastExitCode -ne 0) {
+    $msg = @"
+EXE RETURNED EXIT CODE $LastExitCode
+CALLSTACK:$(Get-PSCallStack | Out-String)
+"@
+    throw $msg
+  }
+}
+
+function clean {
+  Remove-Item build-* -Force -Recurse -ErrorAction SilentlyContinue
+}
+
+function prepare {
+  New-Item -ItemType Directory -Force -Path build-native
+
+  cd build-native
+
+  cmake -A Win32 -DTD_GENERATE_SOURCE_FILES=ON -DTD_ENABLE_MULTI_PROCESSOR_COMPILATION=ON "$td_root"
+  CheckLastExitCode
+  cmake --build .
+  CheckLastExitCode
+
+  cd ..
+}
+
+function config {
+  New-Item -ItemType Directory -Force -Path build-uwp
+  cd build-uwp
+
+  ForEach ($arch in $arch_list) {
+    echo "Config Arch = [$arch]"
+    New-Item -ItemType Directory -Force -Path $arch
+    cd $arch
+    echo "${td_root}"
+    $fixed_arch = $arch
+    if ($arch -eq "x86") {
+      $fixed_arch = "win32"
+    }
+    cmake -A $fixed_arch -DCMAKE_SYSTEM_VERSION="10.0" -DCMAKE_SYSTEM_NAME="WindowsStore" -DCMAKE_TOOLCHAIN_FILE="$vcpkg_cmake" -DTD_ENABLE_MULTI_PROCESSOR_COMPILATION=ON "$td_root"
+    CheckLastExitCode
+    cd ..
+  }
+  echo "done"
+  cd ..
+}
+
+function build {
+  cd build-uwp
+  ForEach ($arch in $arch_list) {
+    echo "Build Arch = [$arch]"
+    cd $arch
+    cmake --build . --config RelWithDebInfo --target tdjson
+    CheckLastExitCode
+    cd ..
+  }
+  cd ..
+}
+
+function export {
+  cp ../tdlib/td/generate/scheme/td_api.tl .
+
+  ForEach ($arch in $arch_list) {
+    $fixed_arch = $arch.ToLower();
+    Remove-Item $arch -Force -Recurse -ErrorAction SilentlyContinue
+    New-Item -ItemType Directory -Force -Path $arch
+
+    cp ${arch}/RelWithDebInfo/* -include "SSLEAY*","LIBEAY*","libcrypto*","libssl*","zlib*","tdjson.pdb","tdjson.dll" $arch
+  }
+}
+
+function run {
+  Push-Location
+  Try {
+    if ($mode -eq "clean") {
+      clean
+    }
+    if (($mode -eq "prepare") -or ($mode -eq "all")) {
+      prepare
+    }
+    if (($mode -eq "config") -or ( $mode -eq "all")) {
+      config
+    }
+    if (($mode -eq "build") -or ($mode -eq "all")) {
+      build
+    }
+    if (($mode -eq "export") -or ($mode -eq "all")) {
+      export
+    }
+  } Finally {
+    Pop-Location
+  }
+}
+
+run