feat: bash installer script (#275)

Author: zaucy

install.sh

@@ -0,0 +1,157 @@
+#!/bin/sh
+
+# This install script is intended to download and install the latest available
+# release of the Ecsact SDK.
+#
+# You can install using this script:
+#   curl -L https://ecsact.dev/install.sh | sh
+# Or directly from GitHub:
+#   curl https://raw.githubusercontent.com/ecsact-dev/ecsact_sdk/main/install.sh | sh
+
+# Installer script inspired by: https://github.com/wasmerio/wasmer-install/blob/master/install.sh
+
+RELEASES_URL="https://github.com/ecsact-dev/ecsact_sdk/releases"
+
+reset="\033[0m"
+red="\033[31m"
+green="\033[32m"
+yellow="\033[33m"
+white="\033[37m"
+bold="\e[1m"
+dim="\e[2m"
+
+init_env_vars() {
+	ARCH=$(uname -m)
+	case $ARCH in
+		amd64)    ARCH="amd64"    ;;
+		x86_64)   ARCH="amd64"    ;;
+		*)        echo "${ARCH} systems are not yet supported. Please open an issue on the project if you would like to use Ecsact in your project: https://github.com/ecsact-dev/ecsact_sdk"; exit 1  ;;
+	esac
+
+	OS=$(uname | tr '[:upper:]' '[:lower:]')
+}
+
+download_json() {
+	url="$2"
+
+	# echo "Fetching $url.."
+	if test -x "$(command -v curl)"; then
+		response=$(curl -s -L -w 'HTTPSTATUS:%{http_code}' -H 'Accept: application/json' "$url")
+		body=$(echo "$response" | sed -e 's/HTTPSTATUS\:.*//g')
+		code=$(echo "$response" | tr -d '\n' | sed -e 's/.*HTTPSTATUS://')
+	elif test -x "$(command -v wget)"; then
+		temp=$(mktemp)
+		body=$(wget -q --header='Accept: application/json' -O - --server-response "$url" 2>"$temp")
+		code=$(awk '/^HTTP/{print $2}' <"$temp" | tail -1)
+		rm "$temp"
+	else
+		printf "Neither curl nor wget was available to perform http requests"
+		return 1
+	fi
+	if [ "$code" != 200 ]; then
+		echo "File download failed with code $code"
+		return 1
+	fi
+
+	eval "$1='$body'"
+	return 0
+}
+
+download_file() {
+	url="$1"
+	destination="$2"
+
+	if test -x "$(command -v curl)"; then
+		code=$(curl -s -w '%{http_code}' -L "$url" -o "$destination")
+	elif test -x "$(command -v wget)"; then
+		code=$(wget --quiet -O "$destination" --server-response "$url" 2>&1 | awk '/^  HTTP/{print $2}' | tail -1)
+	else
+		printf "Neither curl nor wget was available to perform http requests."
+		return 1
+	fi
+
+	if [ "$code" = 404 ]; then
+		printf "\nNot Found - $url\n"
+		printf "  Your platform may not yet be supported ($OS-$ARCH).$reset\n"
+		printf "  Please open an issue on the project if you would like to use Ecsact in your project: https://github.com/ecsact-dev/ecsact_sdk\n\n"
+		return 1
+	elif [ "$code" != 200 ]; then
+		printf "File download failed with code $code"
+		return 1
+	fi
+	return 0
+}
+
+install_ecsact_sdk_deb_package() {
+	printf "${dim}Fetching latest release...${reset}\n"
+	download_json LATEST_RELEASE "$RELEASES_URL/latest" || return 1
+
+	RELEASE_TAG=$(echo "${LATEST_RELEASE}" | tr -s '\n' ' ' | sed 's/.*"tag_name":"//' | sed 's/".*//')
+
+	printf "Download and install Ecsact SDK ${green}$RELEASE_TAG?${reset}"
+	confirm_or_exit || return 1
+
+	DEB_PACKAGE="ecsact_sdk_${RELEASE_TAG}_${ARCH}.deb"
+	DEB_PACKAGE_URL="$RELEASES_URL/download/$RELEASE_TAG/$DEB_PACKAGE"
+	DOWNLOAD_FILE=$(mktemp -t ecsact_sdk_$RELEASE_TAG.XXXXXXXXXX.deb)
+
+	download_file "$DEB_PACKAGE_URL" "$DOWNLOAD_FILE" || return 1
+
+	printf "Installing Ecsact SDK with dpkg...\n"
+	sudo dpkg -i $DOWNLOAD_FILE
+	rm -f $DOWNLOAD_FILE
+}
+
+confirm_or_exit() {
+	if [ -n "$BASH_VERSION" ]; then
+		read -p "$1 [y/N] " -n 1 -r
+		echo
+		if [[ ! $REPLY =~ ^[Yy]$ ]]; then
+			printf "installation aborted\n"
+			return 1
+		fi
+		return 0
+	fi
+
+	read -p "$1 [y/N] " yn
+	case $yn in
+		[Yy]*) break                                      ;;
+		[Nn]*) printf "${red}Installation aborted${reset}\n"; return 1  ;;
+		*)     printf "${red}Installation aborted${reset}\n"; return 1  ;;
+	esac
+
+	return 0
+}
+
+install_ecsact_sdk() {
+	cyan="${reset}\033[36;1m"
+	oran="${reset}\e[38;5;214m"
+
+	printf "${reset}Welcome to the Ecsact SDK bash installer!${reset}\n"
+
+	printf "
+${cyan}         /##########\
+${cyan}     ####  #/     \##\
+${cyan}    ######         \##\
+${cyan}     ####  ##\      \#        ${oran}|####
+${cyan}           \##\        ####  ${oran} #########
+${oran}      ############### ${cyan}###### ${oran}##############
+${cyan}                       ####  ${oran} #########
+${cyan}                   /#         ${oran}|####
+${cyan}         ####     /####/
+${cyan}        ###### ####/
+${cyan}         ####
+${reset}
+"
+	if test -x "$(command -v dpkg)"; then
+		install_ecsact_sdk_deb_package
+	else
+		echo "Only deb package supporting linux distributions can use this install script."
+		exit 1
+	fi
+}
+
+init_env_vars
+install_ecsact_sdk
+unset -f init_env_vars install_ecsact_sdk download_json download_file install_ecsact_sdk_deb_package confirm_or_exit
+