#!/bin/bash

# trap ctrl-c and call ctrl_c()
trap ctrl_c INT

function ctrl_c() {
    popd > /dev/null
    exit
}

# A POSIX variable
OPTIND=1         # Reset in case getopts has been used previously in the shell.

# Initialize our own variables:
GIT_BRANCH="master"
MANUAL_BRANCH_SET=false

show_help(){
    echo "*** PoshC2 Update Script ***"
    echo "Usage:"
    echo "posh-update -b <git branch>"
    echo ""
    echo "Default is the master branch"
}

while getopts "h?b:" opt; do
    case "$opt" in
    h|\?)
        show_help
        exit 0
        ;;
    b)  GIT_BRANCH="$OPTARG"
        MANUAL_BRANCH_SET=true
        ;;
    esac
done



source /usr/local/bin/_posh-common
get_posh_dir

pushd $POSH_DIR  >/dev/null

if [ "$?" -eq "0" ]; then

    if [ "$MANUAL_BRANCH_SET" == "false" ]; then
        GIT_BRANCH=`git rev-parse --abbrev-ref HEAD`
    fi

    echo ""
    echo -e """\033[92m
       __________            .__.     _________  ________
       \_______  \____  _____|  |__   \_   ___ \ \_____  \\
        |     ___/  _ \/  ___/  |  \  /    \  \/  /  ____/
        |    |  (  <_> )___ \|   Y  \ \     \____/       \\
        |____|   \____/____  >___|  /  \______  /\_______ \\
                           \/     \/          \/         \/
        ================= www.PoshC2.co.uk ================"""
    echo ""
    echo "[+] Updating PoshC2"
    echo ""

    if [[ $(id -u) -ne 0 ]]; then
        echo -e "You must run this installer as root.\nQuitting!";
        exit 1;
    fi

    echo ""
    echo "[+] Updating Posh Installation to latest $GIT_BRANCH"
    git fetch
    git reset --hard origin/"$GIT_BRANCH"

    echo ""
    echo "[+] Running Install script"
    ./Install.sh -b "$GIT_BRANCH" -p "$POSH_DIR"

    echo ""
    echo "[+] Update complete"
    echo ""

    popd > /dev/null
fi