dotnet-sdk

#!/bin/bash

dotnet_releases_url=https://raw.githubusercontent.com/dotnet/core/master/release-notes/releases.json

function sdk_help(){
echo ".NET Command Line SDK Switcher (1.0.0)

Usage: dotnet sdk [command]
Usage: dotnet sdk [version]

Commands:
  latest      Swtiches to the latest .NET Core SDK version
  list        Lists all installed .NET Core SDKs
  releases    List all available releases of .NET Core SDKs
  get         Downloads the provided release version. ('' or 'latest' for the latest release)
  help        Display help

Versions:
  An installed version number of a .NET Core SDK"
}

function sdk_list(){
	echo "The installed .NET Core SDKs are:"
	ls -1 /usr/share/dotnet/sdk | sort | head -n -1
}

function sdk_switch(){
	if [ ! -d "/usr/local/share/dotnet/sdk/$v" ]; then
		echo "The $v version of .Net Core SDK was not found
Please, run \"dotnet sdk list\" to make sure you have it installed in /usr/local/share/dotnet/sdk"
		exit 1
	fi

	echo "Switching .NET Core SDK version to $v"
		echo "{
  \"sdk\": {
    \"version\": \"$v\"
  }
}" >> global.json
}

function sdk_latest(){
	if [ -e global.json ]; then
		rm global.json
	fi
	
	echo ".NET Core SDK version switched to latest version."
	dotnet --version
}

function sdk_releases(){
	check_pre

	echo "Releases available for the .NET Core SDK are:"
	
	VS=$(curl -sS $dotnet_releases_url -H "Accept: application/json" | jq "map({date: .date,sdk: .\"version-sdk\"}) | unique_by(.sdk) | .[] | \"\(.date)\t\(.sdk)\" " -r)
	echo "$VS"
}

function sdk_install(){
	check_pre

	if [ -z "$ver" ] || [ "$ver" == "latest" ]; then
		version=$(curl -sS $dotnet_releases_url -H "Accept: application/json" | jq "map({sdk: .\"version-sdk\"}) | unique_by(.sdk) | .[-1] | .sdk " -r)
  else
		version="$ver"
	fi
	
	url=$(curl -sS $dotnet_releases_url -H "Accept: application/json" | jq "map({sdk: .\"version-sdk\",url: (.\"blob-sdk\" + (.\"sdk-mac-x64\" | rtrimstr(\".tar.gz\")) + \".pkg\"  )}) | unique_by(.sdk)  | .[] | select(.sdk==\"$version\") | .url " -r)
	filename=$(curl -sS $dotnet_releases_url -H "Accept: application/json" | jq "map({sdk: .\"version-sdk\",filename: (.\"sdk-mac-x64\" | rtrimstr(\".tar.gz\") + \".pkg\"  )}) | unique_by(.sdk)  | .[] | select(.sdk==\"$version\") | .filename " -r)

	cd ~/Downloads

	echo "Dowloading .NET Core SDK version $version for MacOS"
	curl -# -L -O $url

	sudo installer -pkg ~/Downloads/$filename -target /
}

function check_pre(){
	if ! [ -f "`which jq`" ]; then
		echo "Install ./jq and dependencies?"
		read -p "Continue (y/n)?" choice
		case "$choice" in 
			y|Y ) 
				install_jq
				;;
			n|N )
				exit 1
				;;
			* ) 
				echo "invalid"
				exit 1
				;;
		esac
	fi
}

function install_jq(){
	if [ ! -f "`which brew`" ]; then
		ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null
	else
		brew update
	fi

	brew install jq
}

case "$1" in 
	"help")
		sdk_help
		;;
	"")
		sdk_help
		;;
	"list")
		sdk_list
		;;
	"latest")
		sdk_latest
		;;
	"releases")
		sdk_releases
		;;
	"get")
		ver=$2
		sdk_install
		;;
	*)
		v=$1
		sdk_switch
		;;
esac