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

ROOT="$(cd "$(dirname "$0")" && pwd)"
BUILD="$ROOT/build"
APP="$BUILD/bin/Swiftly.app"
CONTENTS="$APP/Contents"
MACOS="$CONTENTS/MacOS"
RESOURCES="$CONTENTS/Resources"

SDK=$(xcrun --show-sdk-path)

RUST_LIB="$ROOT/target/release"
export MACOSX_DEPLOYMENT_TARGET=14.0
export ZERO_AR_DATE=0
echo "Building Rust workspace (release)..."
cd "$ROOT" && cargo build --release -p swiftly-viewport
if [ $? -ne 0 ]; then
    echo "ERROR: Rust build failed"
    exit 1
fi

if [ ! -f "$RUST_LIB/libswiftly_viewport.a" ]; then
    echo "ERROR: libswiftly_viewport.a not found at $RUST_LIB"
    exit 1
fi

RUST_FLAGS=(-import-objc-header "$ROOT/viewport/include/swiftly.h" -L "$RUST_LIB" -lswiftly_viewport)

# --- App icon from pre-rendered PNGs ---
ICONS="$ROOT/assets/icon_sources"
if [ -d "$ICONS" ]; then
    echo "Generating app icon..."
    ICONSET="$BUILD/AppIcon.iconset"
    mkdir -p "$ICONSET"
    cp "$ICONS/Swiftly_icons.png"     "$ICONSET/icon_16x16.png"
    cp "$ICONS/Swiftly_icons@2x.png"  "$ICONSET/icon_16x16@2x.png"
    cp "$ICONS/Swiftly_icons@2x.png"  "$ICONSET/icon_32x32.png"
    cp "$ICONS/Swiftly_icons@4x.png"  "$ICONSET/icon_32x32@2x.png"
    cp "$ICONS/Swiftly_icons@8x.png"  "$ICONSET/icon_128x128.png"
    cp "$ICONS/Swiftly_icons@16x.png" "$ICONSET/icon_128x128@2x.png"
    cp "$ICONS/Swiftly_icons@16x.png" "$ICONSET/icon_256x256.png"
    cp "$ICONS/Swiftly_icons@32.png"  "$ICONSET/icon_256x256@2x.png"
    cp "$ICONS/Swiftly_icons@32.png"  "$ICONSET/icon_512x512.png"
    cp "$ICONS/Swiftly_icons@64.png"  "$ICONSET/icon_512x512@2x.png"
    iconutil -c icns "$ICONSET" -o "$BUILD/AppIcon.icns"
    rm -rf "$ICONSET"
fi

# --- Bundle structure ---
mkdir -p "$MACOS" "$RESOURCES"
cp "$ROOT/Info.plist" "$CONTENTS/Info.plist"
if [ -f "$BUILD/AppIcon.icns" ]; then
    cp "$BUILD/AppIcon.icns" "$RESOURCES/AppIcon.icns"
fi

# --- Compile Swift ---
echo "Compiling Swift (release)..."
swiftc \
    -target arm64-apple-macosx14.0 \
    -sdk "$SDK" \
    "${RUST_FLAGS[@]}" \
    -framework Cocoa \
    -framework SwiftUI \
    -framework Metal \
    -framework MetalKit \
    -framework QuartzCore \
    -framework CoreGraphics \
    -framework CoreFoundation \
    -O \
    -o "$MACOS/Swiftly" \
    "$ROOT"/src/*.swift

# --- Code sign ---
codesign --force --sign - "$APP"

echo "Built: $APP"