#!/bin/bash
# =============================================================================
#  Popcorn's Pantheon - Season I: Odin's Trial
#  Modpack UNINSTALLER for macOS: removes BepInEx + the modpack from the
#  Steam Valheim install (never touches vanilla game files) and deletes the
#  "Popcorn's Pantheon" Desktop launcher. Safe to run even if already vanilla.
# =============================================================================

say_step() { printf '\n==> %s\n' "$1"; }
say_ok()   { printf '    %s\n' "$1"; }
finish()   {
  printf '\n'
  if [ -t 0 ]; then read -r -p "Press Return to close this window... " _ ; fi
  exit "$1"
}

printf '\n'
printf "  Popcorn's Pantheon - back to vanilla\n"
printf '  Valheim modpack uninstaller for macOS\n'

# ---- 1. Find the Valheim install (same detection as the installer) ----------
say_step 'Looking for your Valheim install...'
STEAM_DIR="$HOME/Library/Application Support/Steam"
CANDIDATES=("$STEAM_DIR/steamapps/common/Valheim")
VDF="$STEAM_DIR/steamapps/libraryfolders.vdf"
if [ -f "$VDF" ]; then
  while IFS= read -r lib; do
    CANDIDATES+=("$lib/steamapps/common/Valheim")
  done < <(sed -n 's/.*"path"[[:space:]]*"\([^"]*\)".*/\1/p' "$VDF")
fi

VALHEIM=""
for c in "${CANDIDATES[@]}"; do
  if [ -d "$c/Valheim.app" ]; then VALHEIM="$c"; break; fi
done

REMOVED=0

if [ -z "$VALHEIM" ]; then
  printf '\nCould not find Valheim - skipping the game-folder cleanup.\n'
  printf 'Places checked:\n'
  for c in "${CANDIDATES[@]}"; do printf '  - %s\n' "$c"; done
else
  say_ok "Found Valheim at: $VALHEIM"

  # ---- 2. Remove ONLY the files/dirs BepInEx + the modpack added ------------
  say_step 'Removing BepInEx + the modpack...'
  TARGETS="BepInEx winhttp.dll doorstop_config.ini doorstop_libs .doorstop_version changelog.txt start_game_bepinex.sh start_server_bepinex.sh"
  for t in $TARGETS; do
    if [ -e "$VALHEIM/$t" ]; then
      rm -rf "$VALHEIM/$t"
      say_ok "Removed $t"
      REMOVED=$((REMOVED + 1))
    fi
  done
  if [ "$REMOVED" -eq 0 ]; then
    say_ok 'Nothing to remove - the game is already vanilla.'
  fi
fi

# ---- 3. Remove the Desktop launcher -----------------------------------------
LAUNCHER="$HOME/Desktop/Popcorn's Pantheon.command"
if [ -e "$LAUNCHER" ]; then
  rm -f "$LAUNCHER"
  say_ok "Removed the Desktop launcher (Popcorn's Pantheon.command)"
  REMOVED=$((REMOVED + 1))
fi

printf '\n=================================================================\n'
printf '  Done - back to vanilla. Launch Valheim via Steam normally.\n'
printf '=================================================================\n\n'
printf '  If anything still seems off, the nuclear fallback is:\n'
printf '  Steam -> Valheim -> Properties -> Installed Files ->\n'
printf '  "Verify integrity of game files".\n'
finish 0