#! /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%%!*}"

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

    if [[ ${line} == *"error while loading shared libraries"* ]]
    then
	send_msg "${channel_it_came_from}" "${person}: please report a bug, specifying exact error message, package of the failing command and architecture"
    fi

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

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

    lastline="${line##*PRIVMSG}"
    lastsender="${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 [[ ${line} == *"pbots_friend: when did you last see"* ]]
    then
	subject="${line##*pbots_friend: 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

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

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

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

    if [[ ${personoslash} == tlCJ99mfZl ]]
    then
	send_msg "${channel_it_came_from}" "${line_filtered}"
    fi

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

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

    if [[ ${line} =~ http://[^\ ]+ ]] || [[ ${line} =~ https://[^\ ]+ ]]
    then
	url_to_get="${BASH_REMATCH}"
	    
        # If pbot is not present.
	if grep no pbot_present
	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}" "The title of that page is: \`${the_title}'"
	    fi
	fi
    fi

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

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

    #echo "${line}"
}