# Copyright 2020 MongoDB Inc.
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"""
Pseudo-builders for building and registering benchmarks.
"""
from SCons.Script import Action


def exists(env):
    return True


def build_benchmark(env, target, source, **kwargs):

    bmEnv = env.Clone()
    bmEnv.InjectThirdParty(libraries=["benchmark"])

    if bmEnv.TargetOSIs("windows"):
        bmEnv.Append(LIBS=["ShLwApi.lib"])

    libdeps = kwargs.get("LIBDEPS", [])
    libdeps.append("$BUILD_DIR/mongo/unittest/benchmark_main")

    kwargs["LIBDEPS"] = libdeps
    benchmark_test_components = {"tests", "benchmarks"}
    primary_component = kwargs.get("AIB_COMPONENT", env.get("AIB_COMPONENT", ""))
    if primary_component and not primary_component.endswith("-benchmark"):
        kwargs["AIB_COMPONENT"] += "-benchmark"
    elif primary_component:
        kwargs["AIB_COMPONENT"] = primary_component
    else:
        kwargs["AIB_COMPONENT"] = "benchmarks"
        benchmark_test_components = {"tests"}

    if "AIB_COMPONENTS_EXTRA" in kwargs:
        benchmark_test_components = set(kwargs["AIB_COMPONENTS_EXTRA"]).union(
            benchmark_test_components
        )

    kwargs["AIB_COMPONENTS_EXTRA"] = benchmark_test_components

    result = bmEnv.Program(target, source, **kwargs)
    bmEnv.RegisterTest("$BENCHMARK_LIST", result[0])
    bmEnv.Alias("$BENCHMARK_ALIAS", result)

    return result


def generate(env):
    env.TestList("$BENCHMARK_LIST", source=[])
    env.AddMethod(build_benchmark, "Benchmark")
    env.Alias("$BENCHMARK_ALIAS", "$BENCHMARK_LIST")