# ── Google Benchmark (FetchContent) ──
include(FetchContent)

find_package(benchmark QUIET)
if(NOT benchmark_FOUND)
    set(BENCHMARK_ENABLE_TESTING OFF CACHE BOOL "" FORCE)
    FetchContent_Declare(
        google_benchmark
        URL https://github.com/google/benchmark/archive/refs/tags/v1.8.3.tar.gz
    )
    FetchContent_MakeAvailable(google_benchmark)
endif()

# ── Benchmark helper header ──
# Provides vde::bench::measure_ms() chrono fallback if benchmark not available
# (benchmark:: is still preferred when linked)

# ── main entry ──
add_executable(vde_bench
    bench_main.cpp
)
target_link_libraries(vde_bench PRIVATE vde benchmark::benchmark)

# ── BVH ──
add_executable(vde_bench_bvh
    bench_main.cpp bench_bvh.cpp
)
target_link_libraries(vde_bench_bvh PRIVATE vde benchmark::benchmark)

# ── Delaunay ──
add_executable(vde_bench_delaunay
    bench_main.cpp bench_delaunay.cpp
)
target_link_libraries(vde_bench_delaunay PRIVATE vde benchmark::benchmark)

# ── Boolean (needs all component libs because INTERFACE deps may not resolve)
add_executable(vde_bench_boolean
    bench_main.cpp bench_boolean.cpp
)
target_link_libraries(vde_bench_boolean PRIVATE
    vde_foundation vde_core vde_curves vde_mesh vde_spatial vde_collision
    vde_boolean vde_brep vde_sketch benchmark::benchmark
)

# ── Curves ──
add_executable(vde_bench_curves
    bench_main.cpp bench_curves.cpp
)
target_link_libraries(vde_bench_curves PRIVATE vde benchmark::benchmark)

# ── Spatial (R-Tree / KD-Tree) ──
add_executable(vde_bench_spatial
    bench_main.cpp bench_spatial.cpp
)
target_link_libraries(vde_bench_spatial PRIVATE vde benchmark::benchmark)

# ── Convenience target: build all benchmarks ──
add_custom_target(vde_benchmarks
    DEPENDS
        vde_bench
        vde_bench_bvh
        vde_bench_delaunay
        
        vde_bench_curves
        vde_bench_spatial
    COMMENT "All benchmarks built"
)

# ── CTest integration: register benchmarks with optional args ──
# Run individual benchmarks via: ctest -R bench_
enable_testing()
add_test(NAME bench_bvh      COMMAND vde_bench_bvh      --benchmark_min_time=0.01s)
add_test(NAME bench_delaunay COMMAND vde_bench_delaunay --benchmark_min_time=0.01s)
add_test(NAME bench_boolean  COMMAND vde_bench_boolean  --benchmark_min_time=0.01s)
add_test(NAME bench_curves   COMMAND vde_bench_curves   --benchmark_min_time=0.01s)
add_test(NAME bench_spatial  COMMAND vde_bench_spatial  --benchmark_min_time=0.01s)