#!/bin/bash

serverBinary="server.out"
serverWorkingDirectory="../bin"
serverWwwRoot="$serverWorkingDirectory/www"

function KillServer()
{
	echo "Stopping server..."
	killall "$serverBinary"
}

function StartServer()
{
	echo "Starting server..."
	oldPwd=$PWD
	until pgrep "$serverBinary"; do
		cd "$serverWorkingDirectory" && ./$serverBinary &
		sleep 2
	done
	cd "$oldPwd"
}

function TestGetHeader()
{
	curlHeaderOutputFile="./temp"
	if curl -I $1 --output $curlHeaderOutputFile 2> /dev/null; then
		
		regexPattern="Content\-Type: $2"
		if egrep -o "$regexPattern" $curlHeaderOutputFile; then
			echo "SUCCESS GET headers for $1 has correct MIME type"
		else
			echo "FAILURE GET headers for $1 contains bad MIME type"
			echo "expected Content-Type: $2"
			echo "actual   $(egrep -o \"$regexPattern\" $curlHeaderOutputFile)"
		fi

		rm $curlHeaderOutputFile
	else
		echo "FAILURE Cannot GET headers for $1"
	fi
}

function TestGetContent()
{
	downloadedFile="./temp"
	if curl "$1" --output "$downloadedFile" 2> /dev/null; then
		expectedMd5="$(md5sum $2 | awk '{print $1}')"
		actualMd5="$(md5sum $downloadedFile | awk '{print $1}')"

		if [ "$expectedMd5" == "$actualMd5" ]; then
			echo "SUCCESS GET request content matched for $1"
		else
			echo "FAILURE file MD5 differs for $1"
			echo "expected $truthMd5"
			echo "actual   $actualMd5"
		fi

		rm $downloadedFile
	else
		echo "FAILURE Cannot GET content for $1"
	fi
}

function TestGET()
{
	truthFile="$serverWwwRoot/$1"
	getUrl="http://localhost:8080/$1"

	TestGetContent $getUrl $truthFile
	TestGetHeader $getUrl $2
	echo ""
}

StartServer
TestGET "index.html" 'text/html'
TestGET "robedude.png" 'image/png'
TestGET "hope.jpg" 'image/jpeg'
TestGET "nevada.mp3" 'audio/mpeg3'
TestGET "index.css" 'text/css'
TestGET "test.js" 'application/javascript'
TestGET "subdir/index.html" 'text/html'
KillServer