load("@bazel_skylib//rules:common_settings.bzl", "string_flag")
load("@rules_zig//zig:defs.bzl", "zig_library")

IMPL = [
    "threaded",
    "zigcoro",
]

string_flag(
    name = "impl",
    build_setting_default = "threaded",
    values = IMPL,
)

[
    config_setting(
        name = "impl.{}".format(impl),
        flag_values = {":impl": impl},
    )
    for impl in IMPL
]

zig_library(
    name = "zigcoro",
    srcs = ["meta.zig"],
    import_name = "async",
    main = "zigcoro.zig",
    deps = [
        "@libxev//:xev",
        "@zigcoro//:libcoro",
    ],
)

zig_library(
    name = "threaded",
    srcs = ["meta.zig"],
    import_name = "async",
    main = "threaded.zig",
    deps = [
        "@libxev//:xev",
    ],
)

alias(
    name = "async",
    actual = select({
        ":impl.threaded": ":threaded",
        ":impl.zigcoro": ":zigcoro",
    }),
    visibility = ["//visibility:public"],
)