#!/usr/bin/env bash
set -euo pipefail

# ============================================================
# build-macos-app.sh
# Baut LehrerApp.Desktop als natives macOS .app-Bundle
# ============================================================

# ---- Konfiguration (bei Bedarf anpassen) --------------------
PROJECT_PATH="LehrerApp.Desktop"          # Pfad zum .csproj / Projektordner
APP_NAME="LehrerApp"                      # Name des App-Bundles (LehrerApp.app)
EXECUTABLE_NAME="LehrerApp.Desktop"       # Name der Binary aus dotnet publish (= AssemblyName des Projekts!)
BUNDLE_ID="de.deinname.lehrerapp"         # CFBundleIdentifier
VERSION="1.0.0"                           # CFBundleShortVersionString
MIN_MACOS="12.0"                          # LSMinimumSystemVersion
ICON_PNG="icon.png"                       # Quell-Icon (min. 512x512 oder 1024x1024)
RUNTIME_IDS=("osx-arm64" "osx-x64")       # Architekturen, für die gebaut wird
UNIVERSAL_BUILD=true                      # true = zusätzlich Universal Binary via lipo
CODESIGN_ADHOC=true                       # true = Ad-hoc-Signierung am Ende

# ---- Ableitungen ---------------------------------------------
BUILD_DIR="./build"
APP_BUNDLE="${BUILD_DIR}/${APP_NAME}.app"
CONTENTS_DIR="${APP_BUNDLE}/Contents"
MACOS_DIR="${CONTENTS_DIR}/MacOS"
RESOURCES_DIR="${CONTENTS_DIR}/Resources"

echo "=== 1/6: Alte Build-Artefakte entfernen ==="
rm -rf "${BUILD_DIR}"
mkdir -p "${BUILD_DIR}"

echo "=== 2/6: dotnet publish für jede Architektur ==="
for RID in "${RUNTIME_IDS[@]}"; do
  echo "  -> Publish für ${RID}"
  dotnet publish "${PROJECT_PATH}" \
    -c Release \
    -r "${RID}" \
    --self-contained true \
    -p:PublishSingleFile=false \
    -o "${BUILD_DIR}/publish/${RID}"
done

echo "=== 3/6: App-Bundle-Struktur anlegen ==="
mkdir -p "${MACOS_DIR}" "${RESOURCES_DIR}"

if [ "${UNIVERSAL_BUILD}" = true ] && [ "${#RUNTIME_IDS[@]}" -ge 2 ]; then
  echo "  -> Universal Binary via lipo erzeugen"
  SRC_A="${BUILD_DIR}/publish/${RUNTIME_IDS[0]}/${EXECUTABLE_NAME}"
  SRC_B="${BUILD_DIR}/publish/${RUNTIME_IDS[1]}/${EXECUTABLE_NAME}"

  # Alle Nicht-Binärdateien (Assets etc.) aus der ersten Architektur übernehmen
  rsync -a --exclude "${EXECUTABLE_NAME}" "${BUILD_DIR}/publish/${RUNTIME_IDS[0]}/" "${MACOS_DIR}/"

  lipo -create -output "${MACOS_DIR}/${EXECUTABLE_NAME}" "${SRC_A}" "${SRC_B}"
else
  echo "  -> Einzelne Architektur (${RUNTIME_IDS[0]}) übernehmen"
  cp -r "${BUILD_DIR}/publish/${RUNTIME_IDS[0]}/"* "${MACOS_DIR}/"
fi

if [ ! -f "${MACOS_DIR}/${EXECUTABLE_NAME}" ]; then
  echo "FEHLER: Erwartete Executable '${EXECUTABLE_NAME}' nicht in ${MACOS_DIR} gefunden."
  echo "Tatsächlicher Inhalt von ${BUILD_DIR}/publish/${RUNTIME_IDS[0]}/:"
  ls "${BUILD_DIR}/publish/${RUNTIME_IDS[0]}/"
  echo "-> Passe EXECUTABLE_NAME im Skript-Kopf entsprechend an."
  exit 1
fi

chmod +x "${MACOS_DIR}/${EXECUTABLE_NAME}"

echo "=== 4/6: Icon konvertieren (.icns) ==="
if [ -f "${ICON_PNG}" ]; then
  ICONSET_DIR="${BUILD_DIR}/icon.iconset"
  mkdir -p "${ICONSET_DIR}"

  sips -z 16 16     "${ICON_PNG}" --out "${ICONSET_DIR}/icon_16x16.png"      > /dev/null
  sips -z 32 32     "${ICON_PNG}" --out "${ICONSET_DIR}/icon_16x16@2x.png"   > /dev/null
  sips -z 32 32     "${ICON_PNG}" --out "${ICONSET_DIR}/icon_32x32.png"      > /dev/null
  sips -z 64 64     "${ICON_PNG}" --out "${ICONSET_DIR}/icon_32x32@2x.png"   > /dev/null
  sips -z 128 128   "${ICON_PNG}" --out "${ICONSET_DIR}/icon_128x128.png"    > /dev/null
  sips -z 256 256   "${ICON_PNG}" --out "${ICONSET_DIR}/icon_128x128@2x.png" > /dev/null
  sips -z 256 256   "${ICON_PNG}" --out "${ICONSET_DIR}/icon_256x256.png"    > /dev/null
  sips -z 512 512   "${ICON_PNG}" --out "${ICONSET_DIR}/icon_256x256@2x.png" > /dev/null
  sips -z 512 512   "${ICON_PNG}" --out "${ICONSET_DIR}/icon_512x512.png"    > /dev/null
  sips -z 1024 1024 "${ICON_PNG}" --out "${ICONSET_DIR}/icon_512x512@2x.png" > /dev/null

  iconutil -c icns "${ICONSET_DIR}" -o "${RESOURCES_DIR}/icon.icns"
  ICON_KEY="<key>CFBundleIconFile</key><string>icon.icns</string>"
else
  echo "  -> Kein '${ICON_PNG}' gefunden, App-Bundle wird ohne Icon erstellt."
  ICON_KEY=""
fi

echo "=== 5/6: Info.plist schreiben ==="
cat > "${CONTENTS_DIR}/Info.plist" <<PLIST
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>CFBundleName</key><string>${APP_NAME}</string>
    <key>CFBundleDisplayName</key><string>${APP_NAME}</string>
    <key>CFBundleExecutable</key><string>${EXECUTABLE_NAME}</string>
    <key>CFBundleIdentifier</key><string>${BUNDLE_ID}</string>
    <key>CFBundlePackageType</key><string>APPL</string>
    <key>CFBundleShortVersionString</key><string>${VERSION}</string>
    <key>CFBundleVersion</key><string>${VERSION}</string>
    <key>LSMinimumSystemVersion</key><string>${MIN_MACOS}</string>
    <key>NSHighResolutionCapable</key><true/>
    ${ICON_KEY}
</dict>
</plist>
PLIST

echo "=== 6/6: Signieren ==="
if [ "${CODESIGN_ADHOC}" = true ]; then
  codesign --force --deep --sign - "${APP_BUNDLE}"
  echo "  -> Ad-hoc signiert (nur lokal lauffähig, Gatekeeper-Warnung bei Weitergabe)."
else
  echo "  -> Signierung übersprungen."
fi

echo ""
echo "Fertig! App-Bundle liegt unter: ${APP_BUNDLE}"
echo "Test mit: open '${APP_BUNDLE}'"