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

repo_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
target="${IOS_RUST_TARGET:-aarch64-apple-ios-sim}"

case "${target}" in
  aarch64-apple-ios)
    tdlib_platform_dir="${TDLIB_IOS_PLATFORM_DIR:-iphoneos}"
    ;;
  aarch64-apple-ios-sim | x86_64-apple-ios)
    tdlib_platform_dir="${TDLIB_IOS_PLATFORM_DIR:-iphonesimulator}"
    ;;
  *)
    printf 'Unsupported iOS Rust target: %s\n' "${target}" >&2
    printf 'Supported targets: aarch64-apple-ios, aarch64-apple-ios-sim, x86_64-apple-ios\n' >&2
    exit 1
    ;;
esac

tdlib_root="${LOCAL_TDLIB_PATH:-${repo_root}/.build/tdlib-ios/${tdlib_platform_dir}}"
tdlib_version="${TDLIB_VERSION:-1.8.29}"

if [[ -z "${DEVELOPER_DIR:-}" && -d /Applications/Xcode.app/Contents/Developer ]]; then
  export DEVELOPER_DIR=/Applications/Xcode.app/Contents/Developer
fi

if [[ ! -d "${tdlib_root}/include" ]]; then
  printf 'TDLib include directory not found: %s\n' "${tdlib_root}/include" >&2
  printf 'Run scripts/build-tdlib-ios.sh first or set LOCAL_TDLIB_PATH to a TDLib install root.\n' >&2
  exit 1
fi

if [[ ! -f "${tdlib_root}/lib/libtdjson.${tdlib_version}.dylib" ]]; then
  printf 'TDLib dylib not found: %s\n' "${tdlib_root}/lib/libtdjson.${tdlib_version}.dylib" >&2
  printf 'tdlib-rs local-tdlib expects the versioned dylib name on macOS-hosted builds.\n' >&2
  exit 1
fi

cd "${repo_root}"

if ! rustup target list --installed | grep -qx "${target}"; then
  rustup target add "${target}"
fi

export LOCAL_TDLIB_PATH="${tdlib_root}"

cargo build \
  -p tele-ios-ffi \
  --no-default-features \
  --features core-session-local-tdlib \
  --target "${target}" \
  --release

printf 'Built tele-ios-ffi for %s with LOCAL_TDLIB_PATH=%s\n' "${target}" "${LOCAL_TDLIB_PATH}"