#!/bin/bash

# Author: Marianne Promberger
# Distributed under GNU GPL v2 or later
# No warranty of any kind --  not fit for any purpose

LOGFILE="/home/mpromber/.msmtp.queue.log"  # msmtpQ logfile as set in ~/bin/msmtpQ
LOGFILE2="/home/mpromber/.msmtp-log"       # msmtp logfile as set in ~/.msmtprc

##### First, we check the log file for msmtpQ and msmtpq  #######################

# We check this file for errors, and if there are any, we send mail to the user
# containing the error line(s), then remove them from the logfile (so that it
# won't get reported twice when this script runs before the user checks mail).

if [ -f $LOGFILE ]; then  # check wether the logfile exists
    if [ -n "$(/bin/grep -i error $LOGFILE)" ]; then  
	if
	echo "I'm afraid these errors were in $LOGFILE:
$(/bin/grep -i error $LOGFILE)" | mail mpromber@localhost -s "msmtpQ errors"
	then
	    /bin/sed -i '/[Ee]rror/d' $LOGFILE
	fi
    fi

##### Then, we check for queued mail ##########################################

# Check whether there is queued mail in the queue directory, and if there is, we
# notify the user:

    if [ -n "$(/usr/bin/find /home/mpromber/.msmtp.queue/ -iname '*mail' -print0)" ]
    then
	echo "You have $(ls /home/mpromber/.msmtp.queue/*mail | wc -l) queued \
Mail message(s) in ~/.msmtp.queue. 
maybe you want to send them with 'msmtpq -r'?" \
    | mail mpromber@localhost -s "You have queued mail"
    fi
else  # If the logfile doesn't exist, notify the user:
    echo "I'm just checking for errors, and there is no file $LOGFILE. 
Maybe check that everything is okay?" | mail mpromber@localhost -s "No msmtpQ logfile?"
fi

# Crop logfile so it doesn't get longer than 50 lines:
if [ "$(wc -l $LOGFILE | cut -d ' ' -f 1)"  -gt 50 ]; then
    /bin/sed -i '1,10d' $LOGFILE                              # cut first ten lines
fi

##### Now, the msmtp logfile itself ###################################################

# Check for errors and if needed notify the user, then remove the error lines

if [ -f $LOGFILE2 ]; then 
    if [ -n "$(/bin/grep -i error $LOGFILE2)" ]; then   # if there are errors
	if
	echo  "I'm afraid these errors were in $LOGFILE2:   
$(/bin/grep -i error $LOGFILE2)" | mail mpromber@localhost \
-s "msmtp errors"                                       # notify the user   
	then
	    /bin/sed -i '/[Ee]rror/d' $LOGFILE2   # remove the error lines
	fi
    fi
    if [ "$(wc -l $LOGFILE2 | cut -d ' ' -f 1)"  -gt 50 ]; then  # if the
								 # logfile is
								 # too long
	/bin/sed -i '1,10d' $LOGFILE2                            # cut the first
								 # 10 lines
    fi
else         # if there isn't a logfile, notify the user:
    echo -n "~/bin/checklog cannot find a logfile $LOGFILE2.      
Did you forget to set one?" | mail mpromber@localhost -s "no msmtp logfile?" 
fi