mailbot.sh - Mailbot in bash

#!/bin/bash

# Mailbot in bash
# Setup some cronjobs to run this script in the given intervals:
# run weekly: mailbot.sh weekly-request
# run weekly the day after the other: mailbot.sh weekly-downvote
# run hourly between the first and the second weekly: mailbot.sh hourly-reminder
# setup your mailserver to process mails for a given mailaddress with this script
# create the database, flat file with one dataset per line
# fields seperated by :
# fields: "email" "name" "expected count of emails (decremented on email receive, incremented on weekly-request)" "voting"
#
# you'll need http://pastebin.com/hxEmY1ZV, too

source /home/littlefox/bin/mailbot/functions.sh

case $1 in
    received)
        mail=$(cat)

        from=$(mailGetFrom "$mail")
        subject=$(mailGetSubject "$mail")
        expectedMails=$(getExpectedMails "$from")

        appendLog "$from:$subject:$expectedMails"

        if [ "$expectedMails" -gt "0" ]
        then
            decExpectedMails "$from"
            incVoting "$from"
            appendLog "Received mail from '$from', increased voting"
        else
            sendNonExpected "$from" "$subject"
            appendLog "Received unexpected mail from '$from'"
        fi
        ;;
    weekly-request)
        getDevelopers | while read line
        do
            sendWeeklyRequest "$line"
        done
        ;;
    weekly-downvote)
        getDevelopers | while read line
        do
            expectedMails=$(getExpectedMails "$line")

            if [ ! "$expectedMails" = "0" ]
            then
                sendWeeklyDownvote "$line"
            fi
        done
        ;;
    hourly-reminder)
        getDevelopers | while read line
        do
            expectedMails=$(getExpectedMails "$line")

            if [ ! "$expectedMails" = 0 ]
            then
                sendReminder "$line"
            fi
        done
        ;;
    *|help)
        echo "Usage: mailbot.sh [ received | weekly-request | weekly-downvote ]"
        ;;
esac