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

ts() { date +"%H:%M:%S"; }
lower() { echo "$1" | tr '[:upper:]' '[:lower:]'; }

script_dir="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
repo_root="$(cd -- "${script_dir}/../.." && pwd)"

usage() {
  cat <<'EOF'
Usage:
  ./build/macos/build_app.sh [--debug|--release] [--deploy] [--dmg] [--clean] [--build-dir <path>]

What it does:
  - Configures and builds Strawberry with CMake + Ninja
  - Optional: runs CMake targets 'deploy' (bundle deps) and 'dmg' (create DMG)

Options:
  --release       Release build (default)
  --debug         Debug build
  --deploy        Run: cmake --build <builddir> --target deploy
  --dmg           Run: cmake --build <builddir> --target dmg   (implies --deploy)
  --clean         Delete the build dir before configuring
  --build-dir     Override build directory (default: <repo>/cmake-build-macos-<config>)
  -h, --help      Show help
EOF
}

config="Release"
do_deploy=0
do_dmg=0
do_clean=0
build_dir=""

while [[ $# -gt 0 ]]; do
  case "$1" in
    --release) config="Release"; shift ;;
    --debug) config="Debug"; shift ;;
    --deploy) do_deploy=1; shift ;;
    --dmg) do_dmg=1; do_deploy=1; shift ;;
    --clean) do_clean=1; shift ;;
    --build-dir) build_dir="${2:-}"; shift 2 ;;
    -h|--help) usage; exit 0 ;;
    *) echo "Unknown arg: $1" >&2; usage; exit 2 ;;
  esac
done

if [[ "$(uname -s)" != "Darwin" ]]; then
  echo "Error: This script is for macOS only." >&2
  exit 1
fi

if ! command -v xcode-select >/dev/null 2>&1 || ! xcode-select -p >/dev/null 2>&1; then
  echo "Error: Xcode Command Line Tools not found." >&2
  echo "Install them first: xcode-select --install" >&2
  exit 1
fi

if ! command -v brew >/dev/null 2>&1; then
  echo "Error: Homebrew ('brew') not found in PATH." >&2
  echo "Install Homebrew first: https://brew.sh/" >&2
  exit 1
fi

if ! command -v cmake >/dev/null 2>&1; then
  echo "Error: cmake not found. Did you run ./build/macos/install_brew_deps.sh ?" >&2
  exit 1
fi

if ! command -v ninja >/dev/null 2>&1; then
  echo "Error: ninja not found. Did you run ./build/macos/install_brew_deps.sh ?" >&2
  exit 1
fi

brew_prefix="$(brew --prefix)"
qt_prefix="$(brew --prefix qt)"
icu_prefix="$(brew --prefix icu4c || true)"

if [[ -z "$build_dir" ]]; then
  build_dir="${repo_root}/cmake-build-macos-$(lower "$config")"
fi

echo "==> [$(ts)] Repo:      ${repo_root}"
echo "==> [$(ts)] Build dir: ${build_dir}"
echo "==> [$(ts)] Config:    ${config}"

if [[ "$do_clean" -eq 1 ]]; then
  echo "==> [$(ts)] Cleaning build dir"
  rm -rf "$build_dir"
fi

mkdir -p "$build_dir"

# Make pkg-config more reliable with Homebrew.
export PKG_CONFIG_PATH="${brew_prefix}/lib/pkgconfig:${brew_prefix}/share/pkgconfig:${PKG_CONFIG_PATH:-}"

# For dist/CMakeLists.txt Info.plist minimum version logic.
export MACOSX_DEPLOYMENT_TARGET="${MACOSX_DEPLOYMENT_TARGET:-12.0}"

cmake_prefix_path="${qt_prefix};${brew_prefix}"

echo "==> [$(ts)] Configuring (CMAKE_PREFIX_PATH=${cmake_prefix_path})"
cmake_extra_args=()

# Optional: override Sparkle update feed / key for your own published builds.
# Example:
#   export SPARKLE_FEED_URL="https://example.com/appcast.xml"
#   export SPARKLE_PUBLIC_ED25519_KEY="base64=="
if [[ -n "${SPARKLE_FEED_URL:-}" ]]; then
  cmake_extra_args+=("-DSPARKLE_FEED_URL=${SPARKLE_FEED_URL}")
fi
if [[ -n "${SPARKLE_PUBLIC_ED25519_KEY:-}" ]]; then
  cmake_extra_args+=("-DSPARKLE_PUBLIC_ED25519_KEY=${SPARKLE_PUBLIC_ED25519_KEY}")
fi

cmake -S "$repo_root" -B "$build_dir" -G Ninja \
  -DCMAKE_BUILD_TYPE="$config" \
  -DCMAKE_PREFIX_PATH="$cmake_prefix_path" \
  -DCMAKE_FRAMEWORK_PATH="${brew_prefix}/Frameworks;${brew_prefix}/opt/sparkle-framework/Frameworks" \
  -DOPTIONAL_COMPONENTS_MISSING_DEPS_ARE_FATAL=OFF \
  ${cmake_extra_args+"${cmake_extra_args[@]}"} \
  ${icu_prefix:+-DICU_ROOT="$icu_prefix"}

echo "==> [$(ts)] Building"
cmake --build "$build_dir" --parallel

if [[ "$do_deploy" -eq 1 ]]; then
  echo "==> [$(ts)] Preparing env for 'deploy' target (GIO/GStreamer)"
  export GIO_EXTRA_MODULES="${brew_prefix}/lib/gio/modules"
  export GST_PLUGIN_SCANNER="${brew_prefix}/opt/gstreamer/libexec/gstreamer-1.0/gst-plugin-scanner"
  export GST_PLUGIN_PATH="${brew_prefix}/lib/gstreamer-1.0"

  # Optional, but helps dist/macos/macgstcopy.sh bundle libsoup which GStreamer loads dynamically.
  libsoup_prefix="$(brew --prefix libsoup 2>/dev/null || true)"
  if [[ -n "${libsoup_prefix}" ]]; then
    libsoup_dylib="$(ls -1 "${libsoup_prefix}"/lib/libsoup-*.dylib 2>/dev/null | head -n 1 || true)"
    if [[ -n "${libsoup_dylib}" ]]; then
      export LIBSOUP_LIBRARY_PATH="${libsoup_dylib}"
    fi
  fi

  echo "==> [$(ts)] Running: deploy"
  cmake --build "$build_dir" --target deploy
fi

if [[ "$do_dmg" -eq 1 ]]; then
  echo "==> [$(ts)] Running: dmg"
  cmake --build "$build_dir" --target dmg
fi

echo "==> [$(ts)] Done"
echo "Built app:"
echo "  ${build_dir}/strawberry.app"