#!/bin/bash
# Postinstall: after the macOS Installer drops Prism.app into /Applications, copy
# the bundled VST3 / AU plugins out of the app's Resources into the system
# Audio Plug-Ins folders so DAWs find them, and expose prism-tui on PATH.
#
# Standard pkg postinstall args:
#   $1 = full path to the installer package
#   $2 = full path of the installed destination (e.g. /Applications)
#   $3 = mountpoint of the target volume (typically /)
#   $4 = root directory of the system being installed onto
#
# Runs as root, so writes to /Library/Audio/Plug-Ins/* succeed.

set -eu

APP_PATH="${2:-/Applications}/Prism.app"
[ -d "$APP_PATH" ] || APP_PATH="/Applications/Prism.app"

PLUGINS_SRC="$APP_PATH/Contents/Resources/plugins"
VST3_DEST="${PRISM_VST3_DEST_DIR:-/Library/Audio/Plug-Ins/VST3}"
AU_DEST="${PRISM_AU_DEST_DIR:-/Library/Audio/Plug-Ins/Components}"
TUI_SOURCE="$APP_PATH/Contents/Resources/tui/prism-tui"
TUI_LINK="${PRISM_TUI_LINK_PATH:-/usr/local/bin/prism-tui}"

mkdir -p "$VST3_DEST" "$AU_DEST"

if [ -d "$PLUGINS_SRC/VST3" ]; then
  cp -R "$PLUGINS_SRC/VST3/"*.vst3 "$VST3_DEST/" 2>/dev/null || true
fi
if [ -d "$PLUGINS_SRC/AU" ]; then
  cp -R "$PLUGINS_SRC/AU/"*.component "$AU_DEST/" 2>/dev/null || true
fi

if [ -f "$TUI_SOURCE" ]; then
  chmod 755 "$TUI_SOURCE"
  mkdir -p "$(dirname "$TUI_LINK")"
  if [ -e "$TUI_LINK" ] || [ -L "$TUI_LINK" ]; then
    if [ ! -L "$TUI_LINK" ] || [ "$(readlink "$TUI_LINK")" != "$TUI_SOURCE" ]; then
      echo "Prism postinstall: $TUI_LINK already exists and was left unchanged." >&2
    fi
  else
    ln -s "$TUI_SOURCE" "$TUI_LINK"
  fi
else
  echo "Prism postinstall: bundled prism-tui not found at $TUI_SOURCE" >&2
fi

exit 0