load("@rules_cc//cc:defs.bzl", "cc_library", "cc_test")
load("@rules_license//rules:license.bzl", "license")

package(
    default_applicable_licenses = [":license"],
)

license(
    name = "license",
    license_kinds = ["@rules_license//licenses/spdx:Zlib"],
    license_text = "LICENSE.txt",
)

license(
    name = "license.dr_libs",
    license_kinds = ["@rules_license//licenses/spdx:MIT-0"],
    license_text = "src/codecs/dr_libs/LICENSE",
)

license(
    name = "license.minimp3",
    license_kinds = ["@rules_license//licenses/spdx:CC0-1.0"],
    license_text = "src/codecs/minimp3/LICENSE",
)

license(
    name = "license.stb_vorbis",
    license_kinds = ["@rules_license//licenses/spdx:MIT"],
    license_text = "src/codecs/stb_vorbis/stb_vorbis.h",
)

license(
    name = "license.timidity",
    license_kinds = ["@rules_license//licenses/spdx:Artistic-1.0"],
    license_text = "src/codecs/timidity/COPYING",
)

exports_files([
    "LICENSE.txt",
    "src/codecs/dr_libs/LICENSE",
    "src/codecs/minimp3/LICENSE",
    "src/codecs/timidity/COPYING",
])

EXCLUDED_EXTERNAL_CODEC_SRCS = [
    # These backends require additional third-party libraries that are not
    # wired in this initial BCR packaging pass.
    "src/codecs/music_cmd.c",
    "src/codecs/music_flac.c",
    "src/codecs/music_fluidsynth.c",
    "src/codecs/music_gme.c",
    "src/codecs/music_modplug.c",
    "src/codecs/music_mpg123.c",
    "src/codecs/music_nativemidi.c",
    "src/codecs/music_ogg.c",
    "src/codecs/music_opus.c",
    "src/codecs/music_wavpack.c",
    "src/codecs/music_xmp.c",
]

DEFAULT_CODEC_DEFINES = [
    "MUSIC_FLAC_DRFLAC",
    "MUSIC_MP3_MINIMP3",
    "MUSIC_MID_TIMIDITY",
    "MUSIC_OGG",
    "OGG_USE_STB",
    "MUSIC_WAV",
]

PLATFORM_FEATURE_DEFINES = select({
    "@platforms//os:linux": [
        "HAVE_FORK",
        "HAVE_SETBUF",
        "HAVE_SIGNAL_H",
        "MUSIC_CMD",
    ],
    "@platforms//os:macos": [
        "MUSIC_MID_NATIVE",
    ],
    "@platforms//os:windows": [
        "MUSIC_MID_NATIVE",
    ],
    "//conditions:default": [],
})

PLATFORM_SRCS = select({
    "@platforms//os:linux": [
        "src/codecs/music_cmd.c",
    ],
    "@platforms//os:macos": [
        "src/codecs/music_nativemidi.c",
        "src/codecs/native_midi/native_midi_common.c",
        "src/codecs/native_midi/native_midi_macosx.c",
    ],
    "@platforms//os:windows": [
        "src/codecs/music_nativemidi.c",
        "src/codecs/native_midi/native_midi_common.c",
        "src/codecs/native_midi/native_midi_win32.c",
    ],
    "//conditions:default": [],
})

PLATFORM_LINKOPTS = select({
    "@platforms//os:macos": [
        "-Wl,-framework,AudioToolbox",
        "-Wl,-framework,AudioUnit",
        "-Wl,-framework,CoreServices",
    ],
    "@platforms//os:windows": [
        "winmm.lib",
    ],
    "//conditions:default": [],
})

cc_library(
    name = "sdl2_mixer_headers",
    hdrs = ["include/SDL_mixer.h"],
    strip_include_prefix = "include",
    visibility = ["//visibility:public"],
    deps = ["@sdl2//:sdl2_headers"],
)

cc_library(
    name = "sdl2_mixer_private_headers",
    hdrs = glob(["src/**/*.h"]),
    applicable_licenses = [
        ":license",
        ":license.dr_libs",
        ":license.minimp3",
        ":license.stb_vorbis",
        ":license.timidity",
    ],
    includes = [
        "src",
        "src/codecs",
    ],
    visibility = ["//:__subpackages__"],
    deps = [":sdl2_mixer_headers"],
)

cc_library(
    name = "sdl2_mixer",
    srcs = [
        "src/effect_position.c",
        "src/effect_stereoreverse.c",
        "src/effects_internal.c",
        "src/mixer.c",
        "src/music.c",
        "src/utils.c",
    ] + PLATFORM_SRCS + glob(
        ["src/codecs/timidity/*.c"],
    ) + glob(
        ["src/codecs/*.c"],
        exclude = EXCLUDED_EXTERNAL_CODEC_SRCS,
    ),
    applicable_licenses = [
        ":license",
        ":license.dr_libs",
        ":license.minimp3",
        ":license.stb_vorbis",
        ":license.timidity",
    ],
    implementation_deps = [":sdl2_mixer_private_headers"],
    linkopts = PLATFORM_LINKOPTS,
    local_defines = DEFAULT_CODEC_DEFINES + PLATFORM_FEATURE_DEFINES,
    visibility = ["//visibility:public"],
    deps = [
        ":sdl2_mixer_headers",
        "@sdl2",
    ],
)

cc_test(
    name = "sdl2_mixer_headers_consumer_compile_test",
    srcs = ["sdl2_mixer_headers_consumer_compile_test.cc"],
    deps = [":sdl2_mixer_headers"],
)

cc_test(
    name = "sdl2_mixer_consumer_link_test",
    srcs = ["sdl2_mixer_consumer_link_test.cc"],
    deps = [":sdl2_mixer"],
)