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

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
cd "$SCRIPT_DIR"

BUILD_DIR="${BUILD_DIR:-$SCRIPT_DIR/build_harness}"
BUILD_TYPE="${BUILD_TYPE:-Release}"
export CMAKE_BUILD_PARALLEL_LEVEL="${CMAKE_BUILD_PARALLEL_LEVEL:-2}"

if [[ $# -gt 1 || ( $# -eq 1 && "$1" != --run ) ]]; then
    echo "Usage: $0 [--run]" >&2
    exit 1
fi

TOOLS=(cmake ninja "${CC:-cc}" "${CXX:-c++}")
case "$(uname -s)" in
    Linux) TOOLS+=(pkg-config) ;;
    Darwin) TOOLS+=(xcrun) ;;
    *) echo "ERROR: build_harness.sh requires a native Linux or macOS host." >&2; exit 1 ;;
esac
if [[ $# -eq 1 ]]; then
    TOOLS+=(ctest)
fi
for tool in "${TOOLS[@]}"; do
    if ! command -v "$tool" >/dev/null 2>&1; then
        echo "ERROR: $tool not found. See README.md prerequisites." >&2
        exit 1
    fi
done

if [[ "$(uname -s)" == Darwin ]]; then
    xcrun --sdk macosx --show-sdk-path
fi

echo "Configuring the native QA harness only in $BUILD_DIR ($BUILD_TYPE)..."
cmake -S "$SCRIPT_DIR" -B "$BUILD_DIR" -G Ninja \
    -DCMAKE_BUILD_TYPE="$BUILD_TYPE" \
    -DSERUMALT_BUILD_PLUGIN=OFF \
    -DSERUMALT_BUILD_TESTS=ON

echo "Building SerumAltTest..."
cmake --build "$BUILD_DIR" --config "$BUILD_TYPE" --target SerumAltTest

if [[ $# -eq 1 ]]; then
    echo "Running the QA harness with CTest..."
    ctest --test-dir "$BUILD_DIR" --build-config "$BUILD_TYPE" --output-on-failure --no-tests=error
fi

echo "Done. QA harness: $BUILD_DIR/SerumAltTest_artefacts/$BUILD_TYPE/SerumAltTest"