# Copyright 2020 The Pigweed Authors
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy of
# the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations under
# the License.

load("@rules_python//python:proto.bzl", "py_proto_library")
load(
    "//pw_build:pigweed.bzl",
    "pw_cc_test",
    "pw_facade",
)
load("//pw_protobuf_compiler:pw_proto_library.bzl", "pw_proto_library")

package(default_visibility = ["//visibility:public"])

licenses(["notice"])

pw_facade(
    name = "id",
    hdrs = [
        "public/pw_thread/id.h",
    ],
    backend = ":id_backend",
    includes = ["public"],
)

label_flag(
    name = "id_backend",
    build_setting_default = ":id_backend_multiplexer",
)

cc_library(
    name = "id_backend_multiplexer",
    visibility = ["@pigweed//targets:__pkg__"],
    deps = select({
        "//pw_build/constraints/rtos:embos": ["//pw_thread_embos:id"],
        "//pw_build/constraints/rtos:freertos": ["//pw_thread_freertos:id"],
        "//pw_build/constraints/rtos:threadx": ["//pw_thread_threadx:id"],
        "//conditions:default": ["//pw_thread_stl:id"],
    }),
)

cc_library(
    name = "config",
    hdrs = ["public/pw_thread/config.h"],
    includes = ["public"],
    deps = [":config_override"],
)

label_flag(
    name = "config_override",
    build_setting_default = "//pw_build:default_module_config",
)

cc_library(
    name = "thread_info",
    hdrs = ["public/pw_thread/thread_info.h"],
    includes = ["public"],
    deps = ["//pw_span"],
)

pw_facade(
    name = "thread_iteration",
    hdrs = [
        "public/pw_thread/thread_iteration.h",
    ],
    backend = ":iteration_backend",
    includes = ["public"],
    deps = [
        ":thread_info",
        "//pw_function",
        "//pw_status",
    ],
)

label_flag(
    name = "iteration_backend",
    build_setting_default = ":iteration_backend_multiplexer",
)

cc_library(
    name = "iteration_backend_multiplexer",
    visibility = ["@pigweed//targets:__pkg__"],
    deps = select({
        "//pw_build/constraints/rtos:embos": ["//pw_thread_embos:thread_iteration"],
        "//pw_build/constraints/rtos:freertos": ["//pw_thread_freertos:thread_iteration"],
        "//pw_build/constraints/rtos:threadx": ["//pw_thread_threadx:thread_iteration"],
        "//conditions:default": ["//pw_thread_stl:thread_iteration"],
    }),
)

pw_facade(
    name = "sleep",
    srcs = [
        "sleep.cc",
    ],
    hdrs = [
        "public/pw_thread/sleep.h",
    ],
    backend = ":sleep_backend",
    implementation_deps = [
        ":id",
    ],
    includes = ["public"],
    deps = [
        "//pw_chrono:system_clock",
        "//pw_preprocessor",
    ],
)

label_flag(
    name = "sleep_backend",
    build_setting_default = ":sleep_backend_multiplexer",
)

cc_library(
    name = "sleep_backend_multiplexer",
    visibility = ["@pigweed//targets:__pkg__"],
    deps = select({
        "//pw_build/constraints/rtos:embos": ["//pw_thread_embos:sleep"],
        "//pw_build/constraints/rtos:freertos": ["//pw_thread_freertos:sleep"],
        "//pw_build/constraints/rtos:threadx": ["//pw_thread_threadx:sleep"],
        "//conditions:default": ["//pw_thread_stl:sleep"],
    }),
)

pw_facade(
    name = "thread",
    srcs = [
        "public/pw_thread/config.h",
        "thread.cc",
    ],
    hdrs = [
        "public/pw_thread/detached_thread.h",
        "public/pw_thread/thread.h",
    ],
    backend = ":thread_backend",
    includes = ["public"],
    deps = [
        ":id",
        ":thread_core",
        "//pw_function",
    ],
)

label_flag(
    name = "thread_backend",
    build_setting_default = ":thread_backend_multiplexer",
)

cc_library(
    name = "thread_backend_multiplexer",
    visibility = ["@pigweed//targets:__pkg__"],
    deps = select({
        "//pw_build/constraints/rtos:embos": ["//pw_thread_embos:thread"],
        "//pw_build/constraints/rtos:freertos": ["//pw_thread_freertos:thread"],
        "//pw_build/constraints/rtos:threadx": ["//pw_thread_threadx:thread"],
        "//conditions:default": ["//pw_thread_stl:thread"],
    }),
)

cc_library(
    name = "deprecated_or_new_thread_function",
    hdrs = ["public/pw_thread/deprecated_or_new_thread_function.h"],
    includes = ["public"],
    deps = [
        "//pw_function",
    ],
)

pw_cc_test(
    name = "deprecated_or_new_thread_function_test",
    srcs = [
        "deprecated_or_new_thread_function_test.cc",
    ],
    deps = [
        ":deprecated_or_new_thread_function",
    ],
)

cc_library(
    name = "thread_core",
    hdrs = [
        "public/pw_thread/thread_core.h",
    ],
    includes = ["public"],
    deps = [
        "//pw_log",
        "//pw_status",
    ],
)

cc_library(
    name = "thread_snapshot_service",
    srcs = [
        "pw_thread_private/thread_snapshot_service.h",
        "thread_snapshot_service.cc",
    ],
    hdrs = ["public/pw_thread/thread_snapshot_service.h"],
    includes = ["public"],
    deps = [
        "//pw_protobuf",
        "//pw_rpc/raw:server_api",
        "//pw_span",
        "//pw_status",
        ":config",
        ":thread_cc.pwpb",
        ":thread_info",
        ":thread_iteration",
        ":thread_snapshot_service_cc.pwpb",
        ":thread_snapshot_service_cc.raw_rpc",
        # TODO(amontanez): This should depend on FreeRTOS but our third parties
        # currently do not have Bazel support.
    ],
)

cc_library(
    name = "test_thread_context_backend_multiplexer",
    visibility = ["@pigweed//targets:__pkg__"],
    deps = select({
        "//conditions:default": ["//pw_thread_stl:test_thread_context"],
    }),
)

pw_facade(
    name = "test_thread_context",
    hdrs = [
        "public/pw_thread/test_thread_context.h",
    ],
    backend = ":test_thread_context_backend",
    includes = ["public"],
)

label_flag(
    name = "test_thread_context_backend",
    build_setting_default = ":test_thread_context_backend_multiplexer",
)

pw_facade(
    name = "yield",
    srcs = [
        "yield.cc",
    ],
    hdrs = [
        "public/pw_thread/yield.h",
    ],
    backend = ":yield_backend",
    implementation_deps = [
        ":id",
    ],
    includes = ["public"],
    deps = [
        "//pw_preprocessor",
    ],
)

label_flag(
    name = "yield_backend",
    build_setting_default = ":yield_backend_multiplexer",
)

cc_library(
    name = "yield_backend_multiplexer",
    visibility = ["@pigweed//targets:__pkg__"],
    deps = select({
        "//pw_build/constraints/rtos:embos": ["//pw_thread_embos:yield"],
        "//pw_build/constraints/rtos:freertos": ["//pw_thread_freertos:yield"],
        "//pw_build/constraints/rtos:threadx": ["//pw_thread_threadx:yield"],
        "//conditions:default": ["//pw_thread_stl:yield"],
    }),
)

cc_library(
    name = "snapshot",
    srcs = [
        "snapshot.cc",
    ],
    hdrs = [
        "public/pw_thread/snapshot.h",
    ],
    deps = [
        ":thread",
        ":thread_cc.pwpb",
        "//pw_bytes",
        "//pw_function",
        "//pw_log",
        "//pw_protobuf",
        "//pw_status",
    ],
)

cc_library(
    name = "non_portable_test_thread_options",
    hdrs = [
        "public/pw_thread/non_portable_test_thread_options.h",
    ],
    deps = [
        ":thread",
    ],
)

# To instantiate this as a pw_cc_test, depend on this pw_cc_library and the
# pw_cc_library which implements the backend for non_portable_test_thread_options. See
# //pw_thread_stl:thread_backend_test as an example.
cc_library(
    name = "thread_facade_test",
    testonly = True,
    srcs = [
        "thread_facade_test.cc",
    ],
    deps = [
        ":id",
        ":non_portable_test_thread_options",
        ":thread",
        "//pw_chrono:system_clock",
        "//pw_sync:binary_semaphore",
        "//pw_unit_test",
    ],
    alwayslink = True,
)

pw_cc_test(
    name = "test_thread_context_facade_test",
    srcs = [
        "test_thread_context_facade_test.cc",
    ],
    # TODO: b/317922402 - On Windows, this test can easily hang indefinitely.
    # Disable on Windows until we can test with the native Windows SDK libraries
    # for threading.
    target_compatible_with = select({
        "@platforms//os:windows": ["@platforms//:incompatible"],
        "//conditions:default": [],
    }),
    deps = [
        ":test_thread_context",
        ":thread",
        "//pw_sync:binary_semaphore",
        "//pw_unit_test",
    ],
)

pw_cc_test(
    name = "id_facade_test",
    srcs = [
        "id_facade_test.cc",
    ],
    deps = [
        ":id",
        "//pw_unit_test",
    ],
)

pw_cc_test(
    name = "sleep_facade_test",
    srcs = [
        "sleep_facade_test.cc",
        "sleep_facade_test_c.c",
    ],
    deps = [
        ":id",
        ":sleep",
        "//pw_chrono:system_clock",
        "//pw_preprocessor",
        "//pw_unit_test",
    ],
)

pw_cc_test(
    name = "thread_info_test",
    srcs = [
        "thread_info_test.cc",
    ],
    deps = [
        ":thread_info",
        "//pw_span",
    ],
)

pw_cc_test(
    name = "thread_snapshot_service_test",
    srcs = [
        "pw_thread_private/thread_snapshot_service.h",
        "thread_snapshot_service_test.cc",
    ],
    # TODO: https://pwbug.dev/342662853 - This test fails under ASAN.
    tags = ["noasan"],
    deps = [
        ":thread_cc.pwpb",
        ":thread_info",
        ":thread_iteration",
        ":thread_snapshot_service",
        ":thread_snapshot_service_cc.pwpb",
        "//pw_protobuf",
        "//pw_span",
        "//pw_sync:thread_notification",
    ],
)

pw_cc_test(
    name = "yield_facade_test",
    srcs = [
        "yield_facade_test.cc",
        "yield_facade_test_c.c",
    ],
    deps = [
        ":id",
        ":yield",
        "//pw_preprocessor",
        "//pw_unit_test",
    ],
)

proto_library(
    name = "thread_proto",
    srcs = ["pw_thread_protos/thread.proto"],
    strip_import_prefix = "/pw_thread",
    deps = [
        "//pw_tokenizer:tokenizer_proto",
    ],
)

py_proto_library(
    name = "thread_proto_py_pb2",
    deps = [":thread_proto"],
)

proto_library(
    name = "thread_snapshot_service_proto",
    srcs = ["pw_thread_protos/thread_snapshot_service.proto"],
    strip_import_prefix = "/pw_thread",
    deps = [
        ":thread_proto",
    ],
)

pw_proto_library(
    name = "thread_snapshot_service_cc",
    deps = [":thread_snapshot_service_proto"],
)

py_proto_library(
    name = "thread_snapshot_service_py_pb2",
    deps = [":thread_snapshot_service_proto"],
)

pw_proto_library(
    name = "thread_cc",
    deps = [":thread_proto"],
)