#!/bin/bash

# UniFFI iOS and tvOS Build Script using -Zbuild-std
# Uses nightly cargo with -Zbuild-std to build tvOS targets

set -e

echo "🔨 Building UniFFI iOS and tvOS Framework with -Zbuild-std..."

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

# Install nightly toolchain
echo "🌙 Installing nightly toolchain..."
rustup toolchain install nightly
rustup component add rust-src --toolchain nightly

# 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 targets (stable)
IOS_TARGETS=(
    "aarch64-apple-ios"           # iOS device (ARM64)
    "x86_64-apple-ios"            # iOS simulator (Intel)
)

# tvOS targets (require -Zbuild-std)
TVOS_TARGETS=(
    "aarch64-apple-tvos"          # tvOS device (ARM64)
    "x86_64-apple-tvos"           # tvOS simulator (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 "📺 Building Rust library for tvOS targets with -Zbuild-std..."
for target in "${TVOS_TARGETS[@]}"; do
    echo "Building for $target..."
    cargo +nightly build --release --target "$target" --features uniffi -Zbuild-std
done

echo "🔗 Creating separate libraries..."

# iOS universal library
lipo -create \
    target/aarch64-apple-ios/release/libchurch_core.a \
    target/x86_64-apple-ios/release/libchurch_core.a \
    -output bindings/ios/libchurch_core_ios.a

# tvOS universal library
lipo -create \
    target/aarch64-apple-tvos/release/libchurch_core.a \
    target/x86_64-apple-tvos/release/libchurch_core.a \
    -output bindings/ios/libchurch_core_tvos.a

# Default to iOS library
cp bindings/ios/libchurch_core_ios.a bindings/ios/libchurch_core_universal.a

echo "⚡ Generating Swift bindings..."
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..."
cat > bindings/ios/church_coreFFI.modulemap << EOF
module church_coreFFI {
    header "church_coreFFI.h"
    export *
}
EOF

echo "📦 Moving 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 "$IOS_PROJECT_DIR/"
cp bindings/ios/libchurch_core_universal.a "$IOS_PROJECT_DIR/libchurch_core.a"

# Also copy the separate libraries for manual swapping if needed
cp bindings/ios/libchurch_core_ios.a "$IOS_PROJECT_DIR/"
cp bindings/ios/libchurch_core_tvos.a "$IOS_PROJECT_DIR/"

echo "✅ UniFFI iOS and tvOS framework build complete!"
echo "📁 Generated separate libraries:"
echo "   - libchurch_core.a (default: iOS)"
echo "   - libchurch_core_ios.a (iOS only)"
echo "   - libchurch_core_tvos.a (tvOS only)"
echo "🎯 Files copied to: $IOS_PROJECT_DIR"
echo "💡 If tvOS build fails, manually swap to libchurch_core_tvos.a"