install.sh

#!/usr/bin/env bash
# Install `portkill` so you can call it from any terminal.
# - Makes the script executable
# - Symlinks it to /usr/local/bin (or ~/.local/bin) as `portkill`
# - Adds an alias `pk` to your shell rc file
#
# Re-run safely; idempotent.

set -e

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
SCRIPT="$SCRIPT_DIR/portkill.js"

if [ ! -f "$SCRIPT" ]; then
  echo "error: $SCRIPT not found" >&2
  exit 1
fi

chmod +x "$SCRIPT"

# Pick a bin dir that's on PATH and writable.
pick_bin_dir() {
  for d in /usr/local/bin "$HOME/.local/bin" "$HOME/bin"; do
    if [ -d "$d" ] && [ -w "$d" ]; then echo "$d"; return; fi
  done
  # fall back: create ~/.local/bin
  mkdir -p "$HOME/.local/bin"
  echo "$HOME/.local/bin"
}

BIN_DIR="$(pick_bin_dir)"
LINK="$BIN_DIR/portkill"

ln -sf "$SCRIPT" "$LINK"
echo "✓ symlinked: $LINK -> $SCRIPT"

# Pick rc file (zsh on macOS by default; also handle bash)
RC=""
case "${SHELL##*/}" in
  zsh)  RC="$HOME/.zshrc" ;;
  bash) RC="$HOME/.bashrc"; [ -f "$HOME/.bash_profile" ] && RC="$HOME/.bash_profile" ;;
  *)    RC="$HOME/.zshrc" ;;
esac
touch "$RC"

# Ensure BIN_DIR is on PATH in rc file
if ! grep -qF "# portkill PATH" "$RC"; then
  {
    echo ""
    echo "# portkill PATH"
    echo "case \":\$PATH:\" in *\":$BIN_DIR:\"*) ;; *) export PATH=\"$BIN_DIR:\$PATH\";; esac"
  } >> "$RC"
  echo "✓ added $BIN_DIR to PATH in $RC"
else
  echo "• PATH entry already in $RC"
fi

# Add `pk` alias (short form)
if ! grep -qF "alias pk=" "$RC"; then
  echo "alias pk='portkill'" >> "$RC"
  echo "✓ added alias: pk -> portkill (in $RC)"
else
  echo "• alias pk already in $RC"
fi

echo ""
echo "Done. Open a new terminal, or run:  source $RC"
echo "Then try:  portkill   (or just: pk)"