#! /bin/bash

# This function reads tags of xml in the same way read normally reads lines.
function rdom
{
    local IFS=\>
    read -d \< element content
}

source common_codez

function l33t_codes
{
    channel_it_came_from="$( echo ${line} | cut -d ' ' -f 3 )"

    person="${sender%%!*}"

    ######################
    # Echo injected data #
    ######################

    # Should send a message like: echo 'This is the message' > /tmp/un-provoked-message-store

    injected_data=0

    line_half_filtered="${line##*PRIVMSG}"
    line_filtered=${line_half_filtered##* :}

    if [[ ${personoslash} == tlCJ99mfZl ]]
    then
	send_msg "${channel_it_came_from}" "${line_filtered}"
	injected_data=1
    else

        ##########################
        # Shared libraries error #
        ##########################

	the_time_now=$(date +%s)

        # If someone complains about error while loading shared libraries error
        # then recomend them to the bug tracker.
	if [[ ${line} == *"error while loading shared libraries"* ]]
	then
	    yepyep=1

            # Make sure they have not already been recommended to the bug
	    # tracker less than one day ago.
	    if [[ -f announcements/people/${personoslash}/seen ]] && (( ( $( stat -c %Y announcements/people/${personoslash}/shared_libs ) + 86400 ) > the_time_now ))
	    then
		yepyep=0
	    fi

	    if (( yepyep ))
	    then
		send_msg "${channel_it_came_from}" "${person}: please report a bug, specifying exact error message, package of the failing command and architecture"
		touch "announcements/people/${personoslash}/shared_libs"
	    fi
	fi

        ##########
        # Repeat #
        ##########

	stuff_said="$( echo ${line} | cut --complement -d ' ' -f 1,2,3 )"
	stuff_said="${stuff_said#:}"

	[[ ${stuff_said} != ${i_repeated} ]] && say_again=yesyes

        # If two different people say the same thing in a row then say it again
        # for fun.
	if [[ ${stuff_said} == ${lastline} ]] && [[ ${person} != ${lastsender} ]] && [[ ${say_again} != nono ]]
	then
	    send_msg "${channel_it_came_from}" "${stuff_said}"
	    i_repeated="${stuff_said}"
	    say_again=nono
	fi

	lastline="${stuff_said}"
	lastsender="${person}"

        #################
        # Announcements #
        #################

        # Remove any forward slashes.
	personoslash="${person//\/}"

        # Make this person a folder if they don't already have one.
	if ! [[ -d "announcements/people/${personoslash}" ]]
	then
	    mkdir -p "announcements/people/${personoslash}"
	    touch "announcements/people/${personoslash}/phrases"
	    cat << EOF > "announcements/people/${personoslash}/settings"
enabled=yes
locked=no
EOF
	fi

	the_time_now=$(date +%s)

        # If this person has announcements enabled and there is at least one
        # phrase in their file and their seen log exists.
	if grep 'enabled=yes' "announcements/people/${personoslash}/settings" > \
	    /dev/null && (( $( wc -l "announcements/people/${personoslash}/phrases" | cut -d ' ' -f 1 ) )) && [[ -f announcements/people/${personoslash}/seen ]]
	then
	    # Check if they were last present more than three hours ago.
	    if (( ( $( stat -c %Y announcements/people/${personoslash}/seen ) +
			    10800 ) < the_time_now ))
	    then
		send_msg "${channel_it_came_from}" \
		    "$( shuf "announcements/people/${personoslash}/phrases" | head -1 )"
	    fi
	    
	fi
	
        # Record that the person has been seen, and when.
	touch "announcements/people/${personoslash}/seen"

        ########
        # Seen #
        ########

        # This one depends on the previous to record the last time the person
        # was seen and create the `the_time_now' var.
	if [[ ${line} == *"pbot-ng: when did you last see"* ]]
	then
	    subject="${line##*pbot-ng: when did you last see }"
	    subject="${subject%?}"
	    subject="${subject%% *}"
	    if [[ -f announcements/people/${subject}/seen ]]
	    then
		seconds_ago_seen="$(( the_time_now - $( stat -c %Y announcements/people/${subject}/seen ) ))"
		minutes_ago_seen="$(( ( the_time_now - $( stat -c %Y announcements/people/${subject}/seen ) ) / 60 ))"
		hours_ago_seen="$(( ( the_time_now - $( stat -c %Y announcements/people/${subject}/seen ) ) / 3600 ))"
		days_ago_seen="$(( ( the_time_now - $( stat -c %Y announcements/people/${subject}/seen ) ) / 86400 ))"
		months_ago_seen="$(( ( the_time_now - $( stat -c %Y announcements/people/${subject}/seen ) ) / 2592000 ))"
		years_ago_seen="$(( ( the_time_now - $( stat -c %Y announcements/people/${subject}/seen ) ) / 946080000 ))"
		if (( seconds_ago_seen < 120 ))
		then
		    send_msg "${channel_it_came_from}" "I last saw ${subject} speak ${seconds_ago_seen} seconds ago."
		elif (( minutes_ago_seen < 120 ))
		then
		    send_msg "${channel_it_came_from}" "I last saw ${subject} speak ${minutes_ago_seen} minutes ago."
		elif (( hours_ago_seen < 48 ))
		then
		    send_msg "${channel_it_came_from}" "I last saw ${subject} speak ${hours_ago_seen} hours ago."
		elif (( days_ago_seen < 60 ))
		then
		    send_msg "${channel_it_came_from}" "I last saw ${subject} speak ${days_ago_seen} days ago."
		elif (( months_ago_seen < 24 ))
		then
		    send_msg "${channel_it_came_from}" "I last saw ${subject} speak ${months_ago_seen} months ago."
		else
		    send_msg "${channel_it_came_from}" "I last saw ${subject} speak ${years_ago_seen} years ago."
		fi
	    else
		send_msg "${channel_it_came_from}" "I never saw ${subject} speak."
	    fi
	fi

        #####################
        # Page title getter #
        #####################

        # If pbot is present record it.
	[[ ${sender%%!*} == pbot ]] && echo yes > pbot_present

        # We don't want to get the page title if it's injected data.
	if [[ ${line} =~ http://[^\ ]+ ]] || [[ ${line} =~ https://[^\ ]+ ]] &&
	    (( ! injected_data ))
	then
	    url_to_get="${BASH_REMATCH}"
	    
            # If pbot is not present.
	    if grep no pbot_present > /dev/null
	    then
		the_title=$(
		    curl -L --compressed "${url_to_get}" 2> /dev/null |
		    while rdom
		    do
			if [[ ${element} = title ]]
			then
			    echo "${content}" | replace_wierd_html_chars
			fi
		    done
		)
		
		if ! [[ -z ${the_title} ]]
		then
		    send_msg "${channel_it_came_from}" "Page title: \`${the_title}'"
		fi
	    fi
	fi

        # TODO: add a birthday announcement feature, cointoss feature, timer
        # feature.

        #########
        # Tests #
        #########

        #echo "${line}"
    fi
}