#!/bin/bash

# UniFFI iOS Build Script
# Generates Swift bindings and universal iOS framework without Python dependencies

set -e

echo "🔨 Building UniFFI iOS Framework..."

# Clean previous builds
echo "🧹 Cleaning previous builds..."
rm -rf target/
rm -rf bindings/
mkdir -p bindings/ios

# Install uniffi_bindgen if not present
if ! command -v uniffi-bindgen &> /dev/null; then
    echo "📦 Installing uniffi_bindgen..."
    cargo install uniffi_bindgen --bin uniffi-bindgen
fi

# iOS and Mac Catalyst targets
IOS_TARGETS=(
    "aarch64-apple-ios"           # iOS device (ARM64)
    "aarch64-apple-ios-sim"       # iOS simulator (Apple Silicon)
    "aarch64-apple-ios-macabi"    # Mac Catalyst (Apple Silicon)
    "x86_64-apple-ios-macabi"     # Mac Catalyst (Intel)
)

echo "📱 Installing iOS targets..."
for target in "${IOS_TARGETS[@]}"; do
    rustup target add "$target"
done

echo "🔧 Building Rust library for iOS targets..."
for target in "${IOS_TARGETS[@]}"; do
    echo "Building for $target..."
    cargo build --release --target "$target" --features uniffi
done

echo "⚡ Generating Swift bindings..."
# Generate Swift bindings using uniffi_bindgen
uniffi-bindgen generate \
    src/church_core.udl \
    --language swift \
    --out-dir bindings/ios \
    --lib-file target/aarch64-apple-ios/release/libchurch_core.a

echo "📋 Generating module map..."
# Create module map for Swift integration
cat > bindings/ios/church_coreFFI.modulemap << EOF
module church_coreFFI {
    header "church_coreFFI.h"
    export *
}
EOF

echo "🔗 Preparing libraries..."
# Simulator library (Apple Silicon only)
cp target/aarch64-apple-ios-sim/release/libchurch_core.a bindings/ios/libchurch_core_sim.a

# Device library (ARM64 device)
cp target/aarch64-apple-ios/release/libchurch_core.a bindings/ios/libchurch_core_device.a

# Mac Catalyst libraries
cp target/aarch64-apple-ios-macabi/release/libchurch_core.a bindings/ios/libchurch_core_mac_arm64.a
cp target/x86_64-apple-ios-macabi/release/libchurch_core.a bindings/ios/libchurch_core_mac_x86_64.a

# Create universal Mac Catalyst library
lipo -create \
    bindings/ios/libchurch_core_mac_arm64.a \
    bindings/ios/libchurch_core_mac_x86_64.a \
    -output bindings/ios/libchurch_core_mac_catalyst.a

echo "🔗 Creating XCFramework..."
# Create separate header directories for each library
mkdir -p bindings/ios/device-headers
mkdir -p bindings/ios/sim-headers
mkdir -p bindings/ios/mac-arm64-headers
mkdir -p bindings/ios/mac-x86_64-headers
cp bindings/ios/church_coreFFI.h bindings/ios/device-headers/
cp bindings/ios/church_coreFFI.h bindings/ios/sim-headers/
cp bindings/ios/church_coreFFI.h bindings/ios/mac-arm64-headers/
cp bindings/ios/church_coreFFI.h bindings/ios/mac-x86_64-headers/

# Create XCFramework with Mac Catalyst support  
# Using universal Mac Catalyst library built from -macabi targets
xcodebuild -create-xcframework \
    -library bindings/ios/libchurch_core_device.a \
    -headers bindings/ios/device-headers \
    -library bindings/ios/libchurch_core_sim.a \
    -headers bindings/ios/sim-headers \
    -library bindings/ios/libchurch_core_mac_catalyst.a \
    -headers bindings/ios/mac-arm64-headers \
    -output bindings/ios/ChurchCore.xcframework

echo "📦 Moving files to iOS project..."
# Copy generated files to iOS project
IOS_PROJECT_DIR="../RTSDA-iOS/RTSDA"
cp bindings/ios/church_core.swift "$IOS_PROJECT_DIR/"
cp bindings/ios/church_coreFFI.h "$IOS_PROJECT_DIR/"
cp bindings/ios/church_coreFFI.modulemap "$IOS_PROJECT_DIR/"
cp -r bindings/ios/ChurchCore.xcframework "$IOS_PROJECT_DIR/"

echo "✅ UniFFI iOS framework build complete!"
echo "📁 Generated files:"
echo "   - church_core.swift (Swift bindings)"
echo "   - church_coreFFI.h (C header)"
echo "   - church_coreFFI.modulemap (Module map)"
echo "   - ChurchCore.xcframework (Universal XCFramework)"
echo ""
echo "🎯 Files copied to: $IOS_PROJECT_DIR"
echo "💡 Add ChurchCore.xcframework to your Xcode project and you're good to go!"
echo "📱 Supports: iOS Device (ARM64), iOS Simulator (Apple Silicon), Mac Catalyst (Intel + Apple Silicon)"