#! /bin/bash

SCRIPT="$( cd "$(dirname "$0")" ; pwd -P )/$(basename "$0")"
CRED_FILE="$HOME/.ad_cred"
MNT_POINT="$HOME/.ad_mnt"
MOUNT_AD="sudo mount -t cifs //prhwinad03/NETLOGON -o domain=UP,credentials=$CRED_FILE $MNT_POINT"

USER_PROMPT="To be able to access the internet you need to login with your UP"
USER_PROMPT+=" (not CS-website) credentials. Please enter your student number:"

PASS_PROMPT="Please enter your UP password"

ERR_PROMPT="Unable to mount AD. The provided username and password is probably "
ERR_PROMPT+="incorrect. Trying again..."

MNT_TIMEOUT=20

while ! [[ -f $CRED_FILE ]]; do
	username=$(zenity --entry --title="Username" --text="$USER_PROMPT")
	[[ $? -ne 0 ]] && break
	password=$(zenity --password --title="Password" --text="$PASS_PROMPT")
	[[ $? -ne 0 ]] && break

	echo "username=$username" > "$CRED_FILE"
	echo "password=$password" >> "$CRED_FILE"
done

if ! [[ -f $CRED_FILE ]]; then
	zenity --error --title="Error" --text="Couldn't get username and password, cancelling"
	exit 1
fi

mkdir -p "$MNT_POINT"

while [[ $MNT_TIMEOUT -ge 0 ]] && ! mount | grep -q "$MNT_POINT"; do
	$MOUNT_AD || break
	((MNT_TIMEOUT-=1))
	sleep 5
done

if ! mount | grep -q "$MNT_POINT"; then
	zenity --error --title="Error" --text="$ERR_PROMPT"
	rm "$CRED_FILE"
	"$SCRIPT"
fi