#!/bin/sh

# Usage:
#   ./appify-zathura.sh /path/to/executable "App Name" [bundle_id] [--set-default]
# Example:
#   ./appify-zathura.sh /opt/homebrew/bin/zathura "Zathura" com.siah.Zathura --set-default

set -eu

if [ $# -lt 2 ]; then
  echo "Usage: $(basename "$0") /path/to/executable \"App Name\" [bundle_id] [--set-default]" >&2
  exit 1
fi

EXEC="$1"
APPNAME="$2"
APPID="${3:-}"

SET_DEFAULT="no"
if [ "${4:-}" = "--set-default" ]; then
  SET_DEFAULT="yes"
fi

if [ ! -x "$EXEC" ]; then
  echo "Error: executable not found or not executable: $EXEC" >&2
  exit 1
fi

# Bundle ID 없으면 AppName을 알파뉴메릭만 추려서 기본값 생성
if [ -z "$APPID" ]; then
  SANAME=$(printf "%s" "$APPNAME" | tr -cd '[:alnum:]')
  [ -z "$SANAME" ] && SANAME="App"
  APPID="com.local.${SANAME}"
fi

APPROOT="${APPNAME}.app"
APPDIR="${APPROOT}/Contents"
MACOSDIR="${APPDIR}/MacOS"
RESOURCEDIR="${APPDIR}/Resources"

# 기존 .app 있으면 교체
if [ -e "$APPROOT" ]; then
  echo "Removing existing ${APPROOT}..."
  rm -rf "$APPROOT"
fi

echo "Creating app bundle..."
mkdir -p "$MACOSDIR" "$RESOURCEDIR"

# 실행 래퍼
cat >"${MACOSDIR}/${APPNAME}" <<SH
#!/bin/sh
exec "${EXEC}" "\$@"
SH
chmod +x "${MACOSDIR}/${APPNAME}"

# Info.plist (Bundle ID + PDF 뷰어로 선언)
cat >"${APPDIR}/Info.plist" <<PLIST
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>CFBundleName</key><string>${APPNAME}</string>
  <key>CFBundleDisplayName</key><string>${APPNAME}</string>
  <key>CFBundleIdentifier</key><string>${APPID}</string>
  <key>CFBundleVersion</key><string>1.0</string>
  <key>CFBundleShortVersionString</key><string>1.0</string>
  <key>CFBundlePackageType</key><string>APPL</string>
  <key>CFBundleExecutable</key><string>${APPNAME}</string>

  <!-- PDF를 이 앱으로 열 수 있게 선언 -->
  <key>CFBundleDocumentTypes</key>
  <array>
    <dict>
      <key>CFBundleTypeName</key><string>PDF document</string>
      <key>LSItemContentTypes</key>
      <array>
        <string>com.adobe.pdf</string>
      </array>
      <key>CFBundleTypeRole</key><string>Viewer</string>
    </dict>
  </array>
</dict>
</plist>
PLIST

echo "Validating Info.plist..."
if ! /usr/bin/plutil -lint "${APPDIR}/Info.plist" >/dev/null 2>&1; then
  echo "Error: Info.plist validation failed." >&2
  exit 1
fi

# /Applications 로 이동 (권한 필요시 sudo 사용)
TARGET="/Applications/${APPROOT}"
echo "Installing to /Applications..."
if ! mv "${APPROOT}" /Applications/ 2>/dev/null; then
  echo "mv needs admin rights; trying sudo..."
  rm -r /Applications/"$APPROOT"
  sudo mv "${APPROOT}" /Applications/
fi

# Launch Services에 등록
LSREG="/System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister"
if [ -x "$LSREG" ]; then
  echo "Registering with Launch Services..."
  "$LSREG" -f "$TARGET" >/dev/null 2>&1 || true
fi

# mdls로 Bundle ID 확인
echo "Checking bundle id..."
FOUND_ID=$(mdls -name kMDItemCFBundleIdentifier "$TARGET" 2>/dev/null | awk -F'=' '{gsub(/^[ \t"]+|[ \t"]+$/,"",$2); print $2}')
if [ -z "$FOUND_ID" ] || [ "$FOUND_ID" = "(null)" ]; then
  echo "Warning: mdls didn't return a bundle id. Using ${APPID} for duti operations." >&2
  FOUND_ID="$APPID"
fi

# (옵션) duti로 기본앱 설정
if [ "$SET_DEFAULT" = "yes" ]; then
  if ! command -v duti >/dev/null 2>&1; then
    echo "duti not found. Installing hint: brew install duti" >&2
    exit 1
  fi
  echo "Setting ${FOUND_ID} as default app for PDF..."
  # UTI 기준(권장)
  duti -s "${FOUND_ID}" com.adobe.pdf all
  # 확장자 기준(추가)
  duti -s "${FOUND_ID}" .pdf all
fi

echo "Done."
echo "App:            ${TARGET}"
echo "Bundle ID:      ${FOUND_ID}"
echo "Set default?:   ${SET_DEFAULT}"
echo "Test: open -a \"${APPNAME}\" /path/to/file.pdf"