#!/usr/bin/env bash

# Thank you LWSS
# https://github.com/LWSS/Fuzion/commit/a53b6c634cde0ed47b08dd587ba40a3806adf3fe

[[ ! -z "$SUDO_USER" ]] && RUNUSER="$SUDO_USER" || RUNUSER="$LOGNAME"
RUNCMD="sudo -u $RUNUSER"

$RUNCMD bash ./scripts/updater true
$RUNCMD bash ./report-crash true

line=$(pgrep -u $RUNUSER hl2_linux)
arr=($line)

if [ $# == 1 ]; then
    proc=$1
else
    if [ ${#arr[@]} == 0 ]; then
        echo TF2 isn\'t running!
        exit
    fi
    proc=${arr[0]}
fi

echo Running instances: "${arr[@]}"
echo Attaching to "$proc"

# Get a Random name from the build_names file.
FILENAME=$(shuf -n 1 build_names)

# Create directory if it doesn't exist
if [ ! -d "/lib/i386-linux-gnu/" ]; then
    mkdir /lib/i386-linux-gnu/
fi

# In case this file exists, get another one. ( checked it works )
while [ -f "/lib/i386-linux-gnu/${FILENAME}" ]; do
    FILENAME=$(shuf -n 1 build_names)
done

# echo $FILENAME > build_id # For detaching

sudo cp "bin/libcathook.so" "/lib/i386-linux-gnu/${FILENAME}"

echo loading "$FILENAME" to "$proc"

gdbbin="gdb"
$gdbbin -n -q -batch                                                                                \
    -ex "attach $proc"                                                                          \
    -ex "echo \033[1mCalling dlopen\033[0m\n"                                                   \
    -ex "call ((void*(*)(const char*, int))dlopen)(\"/lib/i386-linux-gnu/$FILENAME\", 1)"       \
    -ex "echo \033[1mCalling dlerror\033[0m\n"                                                  \
    -ex "call ((char*(*)(void))dlerror)()"                                                      \
    -ex "detach"                                                                                \
    -ex "quit"

sudo rm "/lib/i386-linux-gnu/${FILENAME}"
