#!/bin/bash

if [ "$#" -eq 2 ]; then
	EMAIL="$1"
	PASSWORD="$2"
else
	read -r -p    "username          : " EMAIL
	read -r -s -p "password (silent) : " PASSWORD
	echo ''
fi

HEADERS="Content-Type: application/json"
PAYLOAD="{\"username\":\"$EMAIL\",\"password\":\"$PASSWORD\"}"

AUTH_TOKEN=$(curl -s -d "$PAYLOAD" -H "$HEADERS" -X POST https://authserver.mojang.com/authenticate)

if [[ -z "$AUTH_TOKEN" ]]; then
	echo "[!] empty response from auth server"
	exit
fi

if [[ $AUTH_TOKEN == *ForbiddenOperationException* ]]; then
	echo "[!] invalid credentials"
	exit
fi

if ! command -v jq &> /dev/null
then
	echo "$AUTH_TOKEN"
else
	ACCESSTOKEN=$(echo "$AUTH_TOKEN" | jq .accessToken)
	CLIENTTOKEN=$(echo "$AUTH_TOKEN" | jq .clientToken)
	echo "accessToken: $ACCESSTOKEN"
	echo "clientToken: $CLIENTTOKEN"
fi