[GCI 2013] Tool for checking whether given task has reviewed

#!/bin/bash

echo
echo \(C\) 2013 Artur \"Mrowqa\" Jamro  -----  http://mrowqa.pl/
echo Tool for auto-checking whether GCI task has reviewed.
echo Version 1.17.2
echo

########################################################
function getState() { # params: $task_id
    local task_id=$1
    result=$(wget -qO- http://www.google-melange.com/gci/task/view/google/$CONTEST_YEAR/$task_id 2> /dev/null | grep Status: | sed -r s/^.*\"emph\"\>//g | sed -r s/\<.*$//g)
    echo $result
}

function onStateChange() { # params: $newState, $prevState
    local newState=$1
    local prevState=$2

    echo
    echo Task changed state!
    echo New state: $newState
    # notifyViaToast # you probably don't have "toast" command, so beeping is still default; i'll maybe upload this binary :)
    notifyBeeping # you can choose these functions you want, you can even write some yourself :)
}


########################################################
####### notify functions - you can choose these you want or even write some yourself :)
function notifyBeeping () {
    echo Press Ctrl-C to stop beeping.

    break_on_ctrl_c=0
    while [ "$ctrl_c_pressed" == "0" ]; do
        echo -en "\007" # beep
        sleep 1s
    done
    ctrl_c_pressed=0
    break_on_ctrl_c=1
}
function notifyViaLibnotify () { # Dedicated for GNOME Shell, will work partly on Unity and Xfce, also probably KDE and other DEs with libnotify support
    # thanks to: Mateusz "m4tx" Maćkowski --- http://m4tx.pl
    notify-send --expire-time=3600000 --urgency=critical 'GCI2013' "Task $task_id: $taskState! \nhttp://www.google-melange.com/gci/task/view/google/$CONTEST_YEAR/$task_id$@"
}
function notifyViaToast () { #win8+
    local toastState=Timeout
    local imageFile=$(pwd)/gci2013-logo.png
    while [ "$toastState" == "Timeout" ]; do
        toastState=$(toast -t "Task ID: $task_id" -p $imageFile -m "New task state: $taskState!
Click here to see your task." -w)
    done
    if [ "$toastState" == "Activated" ]; then
        explorer http://www.google-melange.com/gci/task/view/google/$CONTEST_YEAR/$task_id
    fi
}
# tried write one notify function for win8 and message box, but still had problems with bash...


########################################################
break_on_ctrl_c=1
ctrl_c_pressed=0
control_c() { # run if user hits control-c
    ctrl_c_pressed=1
    if [ "$break_on_ctrl_c" == "1" ]; then
        echo Ctr-C interruption! Exiting...
        exit
    fi
}
# trap keyboard interrupt (control-c)
trap control_c SIGINT
########################################################
########################################################

if [ -z "$1" ]; then
    echo Usage: wait_for_task \<task_id\>
    echo Usage: wait_for_task -
    echo
    echo If you choose second version, \<task_id\> will be read from "task.id" file.
    exit
fi

task_id=$1
TIMESTAMP=60s
CONTEST_YEAR=gci2013 # will probably works for GSoC too


if [ "$task_id" == "-" ]; then
    task_id=$(cat task.id)
fi

echo Waiting for task state changes, task: $task_id
echo Checking every $TIMESTAMP

prevState=$(getState $task_id)
if [ "$prevState" == "Closed" ]; then
    echo Task $task_id is closed!
    exit
fi

echo Current state: $prevState
echo

while [ "true" ]; do
    taskState=$(getState $task_id)
    if [ "$taskState" != "$prevState" ]; then
        onStateChange $taskState $prevState # wait for user interaction, don't check firstly once more state
        if [ "$taskState" == "Closed" ]; then
            break
        fi
        echo
        echo Still waiting for state changes...
    fi
    prevState=$taskState
    sleep $TIMESTAMP
done

echo
echo Task $task_id closed!