#!/bin/bash

RUNNING_WAYPIPE=false
SSH_CLIENT=""
CHILD_PID=$(pgrep -P "$1")

GRAND_CHILD_PID=$(pgrep -P "$CHILD_PID")
if [ "$GRAND_CHILD_PID" != 0 ]; then
    GRAND_CHILD_NAME=$(ps -p "$GRAND_CHILD_PID" -o comm=)
    if [ "$GRAND_CHILD_NAME" == "ssh" ]; then
        CHILD_PID=$GRAND_CHILD_PID
        SSH_CLIENT=$(ps -p "$CHILD_PID" -o args --no-headers | awk '{ print $2 }')
    fi
    if [ "$GRAND_CHILD_NAME" == "waypipe" ]; then
        RUNNING_WAYPIPE=true
        CHILD_PID=$(pgrep -P "$GRAND_CHILD_PID")
        SSH_CLIENT=$(ps -p "$GRAND_CHILD_PID" -o args --no-headers | awk '{ print $4 }')
    fi
fi


if [ $RUNNING_WAYPIPE == true ]; then
    PREVIOUS_SESSION_ID=$(grep -z "SSH_SESSION_ID" "/proc/$CHILD_PID/environ" | xargs -0 -n 1 | grep -oP "[0-9]*")
    SSH_SESSION_ID=$RANDOM
    alacritty -e zsh -c "SSH_SESSION_ID=$SSH_SESSION_ID waypipe ssh -t \"$SSH_CLIENT\" env SSH_SESSION_ID=\"$SSH_SESSION_ID\" PREVIOUS_SESSION_ID=\"$PREVIOUS_SESSION_ID\" \"zsh --login\""
else
    if [ "$(ps -p "$1" -o comm=)" == "alacritty" ]; then
        CWD=$(readlink -e /proc/"$CHILD_PID"/cwd)
        if [ "$CWD" != "" ]; then
            alacritty --working-directory "$CWD"
        else
            alacritty
        fi
    else
        alacritty
    fi
fi