#!/bin/bash

# simple chat bot
# with sending images to an external program
# and ignoring some nicknames

random() {
    shuf -n1 -i "1-$1"
}

cd "$(dirname "$0")"

if grep -q -- "$1" "ignore"; then
exit 0
fi

echo -n "$1: "
from=$(echo "$1" | tr -d '$`|<>')

# Second argument shows whether user is an admin (useless).
shift 2
string=$(echo "$@" | tr -d '$`')
if [[ ${#string} -gt 750 ]]; then
    echo "tl;dr"
    exit 0
fi


if [[ "$string" == *http*://* ]]; then
    amount=$(sed -e '/https*:\/\//!d' ./frs.txt | wc -l)
    # Makes it a bit more human (time to find a link?).
    sleep 1
    sed -e '/https*:\/\//!d' ./frs.txt | sed -n "$(random "$amount")p"
    img="$(echo "$string" | sed -ne 's|.*\(https*://[^ \"()<>]*\).*|\1|g;1p')"
    ns="$(echo "$string" | sed -e "s|$img||g")"
    cl="$(wget --spider -S $(eval echo '$img') 2>&1)"
    if [[ $(echo "$cl" | sed -e '/Content-Type/!d;/image\//!d') ]]; then
        #echo 'posting'
        #echo "$img" "$from" >> ~/data/pictures
    fi
else
    amount="$(sed -e '/https*:\/\//d' ./frs.txt | wc -l)"
    answer="$(sed -e '/https*:\/\//d' ./frs.txt | sed -ne "s/;;\\\n/\n/g;$(random "$amount")p")"
    # Makes it a bit more human.
    sleep "$(echo "${#answer} * 0.1" | bc -l)"
    echo "$answer"
fi
if [[ ${#string} -lt 7 ]]; then
    exit 0
fi
echo "$string" | sed -e '{:q;N;s/\n/;;\\n/g;t q}' >> ./frs.txt
exit 0