#!/usr/bin/env bash
# Baut das gepatchte Ghostty-Template (ghostty-template/Ghostty.app) lokal neu —
# OHNE VM, OHNE Zig. Der kritische Zig-Kern liegt bereits als
# vendor/libghostty/lib/libghostty.a vor; hier laeuft nur noch reines Xcode.
#
# Voraussetzungen:
#   - Volles Xcode (CommandLineTools reichen NICHT). Per `xcodes` installierbar.
#   - vendor/libghostty/lib/libghostty.a (arm64) + vendor/libghostty/include
#   - Installierte /Applications/Ghostty.app (liefert die Shell-Ressourcen)
#
# WICHTIG: libghostty.a ist auf Ghostty v1.3.1 gepinnt. Ein Versionssprung
# erfordert einen NEUEN libghostty.a-Build (Zig, nur in macOS-15-VM moeglich —
# siehe vendor/libghostty/README.md). Dieses Skript baut nur das App-Bundle neu.
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
GHOSTTY_VERSION="${1:-v1.3.1}"
VENDOR="$SCRIPT_DIR/vendor/libghostty"
BUILD="$SCRIPT_DIR/.ghostty-build"
SRC="$BUILD/ghostty-src"
INSTALLED="/Applications/Ghostty.app"

# --- Xcode (volles) finden ---
find_xcode() {
  local p
  p="$(xcode-select -p 2>/dev/null || true)"
  [[ "$p" == *Xcode*/Contents/Developer ]] && { echo "$p"; return; }
  for c in /Applications/Xcode*.app \
           "$HOME/Library/Application Support/com.robotsandpencils.xcodes/Xcode.app"; do
    [[ -d "$c/Contents/Developer" ]] && { echo "$c/Contents/Developer"; return; }
  done
  return 1
}
DEVELOPER_DIR="$(find_xcode)" || { echo "Volles Xcode nicht gefunden." >&2; exit 1; }
export DEVELOPER_DIR
echo ">> Xcode: $(xcodebuild -version | head -1)"

# --- Vorbedingungen ---
[[ -f "$VENDOR/lib/libghostty.a" ]] || { echo "fehlt: $VENDOR/lib/libghostty.a" >&2; exit 1; }
[[ -d "$INSTALLED/Contents/Resources" ]] || { echo "fehlt: $INSTALLED (Shell-Ressourcen)" >&2; exit 1; }

# --- 1. Source holen ---
mkdir -p "$BUILD"
if [[ ! -d "$SRC/.git" ]]; then
  rm -rf "$SRC"
  git clone --depth 1 --branch "$GHOSTTY_VERSION" https://github.com/ghostty-org/ghostty.git "$SRC"
else
  git -C "$SRC" fetch --depth 1 origin "$GHOSTTY_VERSION"
  git -C "$SRC" checkout -f FETCH_HEAD
fi

# --- 2. Patch anwenden (idempotent) ---
cd "$SRC"
git checkout -- "macos/Sources/Features/Custom App Icon/DockTilePlugin.swift" 2>/dev/null || true
git apply "$SCRIPT_DIR/ghostty-template/dock-icon.patch"
echo ">> Patch angewandt"

# --- 3. xcframework aus libghostty.a (Header MIT module.modulemap aus src/include) ---
OUT_XCF="$SRC/macos/GhosttyKit.xcframework"
rm -rf "$OUT_XCF"
xcodebuild -create-xcframework \
  -library "$VENDOR/lib/libghostty.a" \
  -headers "$SRC/include" \
  -output "$OUT_XCF" >/dev/null
echo ">> GhosttyKit.xcframework verpackt"

# --- 4. Shell-Ressourcen einspeisen (sonst CpResource-Fehler) ---
SHARE="$SRC/zig-out/share"
mkdir -p "$SHARE"
for n in zsh vim terminfo man nvim locale fish ghostty bat bash-completion; do
  rm -rf "$SHARE/$n"
  cp -R "$INSTALLED/Contents/Resources/$n" "$SHARE/$n"
done
echo ">> Shell-Ressourcen eingespeist"

# --- 5. App bauen (arm64, ReleaseLocal, ohne Signing) ---
cd "$SRC/macos"
xcodebuild -project Ghostty.xcodeproj -target Ghostty -configuration ReleaseLocal \
  SYMROOT="$BUILD/out" ARCHS=arm64 ONLY_ACTIVE_ARCH=YES \
  CLANG_MODULE_CACHE_PATH="$BUILD/modulecache" \
  CODE_SIGNING_ALLOWED=NO CODE_SIGNING_REQUIRED=NO CODE_SIGN_IDENTITY="" \
  build >/dev/null
echo ">> App gebaut"

# --- 6. Template ersetzen ---
DST="$SCRIPT_DIR/ghostty-template/Ghostty.app"
rm -rf "$DST"
cp -R "$BUILD/out/ReleaseLocal/Ghostty.app" "$DST"
echo ">> Template aktualisiert: $DST"