# Copyright 2022 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.

import("//build_overrides/pigweed.gni")

import("$dir_pw_build/error.gni")
import("$dir_pw_build/target_types.gni")
import("$dir_pw_docgen/docs.gni")
import("tinyusb.gni")

# List of targets defined by this module.
_tinyusb_targets = [
  "device",
  "device_audio",
  "device_bth",
  "device_cdc",
  "device_dfu",
  "device_hid",
  "device_midi",
  "device_msc",
  "device_net",
  "device_usbtmc",
  "device_vendor",
  "device_video",
  "host",
  "host_cdc",
  "host_hid",
  "host_msc",
  "host_vendor",
]

# This file defines multiple GN source_set for using tinyusb and its different
# parts. See docs.rst for the configuration details.
if (pw_third_party_tinyusb_SOURCE == "") {
  group("tinyusb") {
  }
  foreach(tinyusb_target, _tinyusb_targets) {
    group("${tinyusb_target}") {
    }
  }
} else if (pw_third_party_tinyusb_PORT == "") {
  pw_error("tinyusb") {
    message_lines = [
      "tinyusb is being used by $current_toolchain, but pw_third_party_tinyusb_PORT is not set.",
      "If this toolchain is intentionally using tinyusb, ensure your toolchain configuration for this target sets pw_third_party_tinyusb_PORT.",
    ]
  }
  foreach(tinyusb_target, _tinyusb_targets) {
    group("${tinyusb_target}") {
      deps = [ ":tinyusb" ]
    }
  }
} else if (pw_third_party_tinyusb_CONFIG == "") {
  pw_error("tinyusb") {
    message_lines = [
      "tinyusb is being used by $current_toolchain, but pw_third_party_tinyusb_CONFIG is not set.",
      "If this toolchain is intentionally using tinyusb, ensure your toolchain configuration for this target sets pw_third_party_tinyusb_CONFIG.",
    ]
  }
  foreach(tinyusb_target, _tinyusb_targets) {
    group("${tinyusb_target}") {
      deps = [ ":tinyusb" ]
    }
  }
} else {
  not_needed([ "_tinyusb_targets" ])

  config("public_includes") {
    include_dirs = [ "$pw_third_party_tinyusb_SOURCE/src" ]
    visibility = [ ":*" ]
  }

  pw_source_set("tinyusb") {
    public_configs = [ ":public_includes" ]

    # tinyusb depends on headers provided by the other modules in this file
    # conditional to the features enabled by the config, so ignore those include
    # checks.
    check_includes = false
    allow_circular_includes_from = [ pw_third_party_tinyusb_PORT ]
    public_deps = [
      pw_third_party_tinyusb_CONFIG,
      pw_third_party_tinyusb_PORT,
    ]
    public = [
      "$pw_third_party_tinyusb_SOURCE/src/common/tusb_common.h",
      "$pw_third_party_tinyusb_SOURCE/src/common/tusb_compiler.h",
      "$pw_third_party_tinyusb_SOURCE/src/common/tusb_error.h",
      "$pw_third_party_tinyusb_SOURCE/src/common/tusb_fifo.h",
      "$pw_third_party_tinyusb_SOURCE/src/common/tusb_timeout.h",
      "$pw_third_party_tinyusb_SOURCE/src/common/tusb_types.h",
      "$pw_third_party_tinyusb_SOURCE/src/common/tusb_verify.h",
      "$pw_third_party_tinyusb_SOURCE/src/tusb.h",
      "$pw_third_party_tinyusb_SOURCE/src/tusb_option.h",
    ]
    sources = [
      "$pw_third_party_tinyusb_SOURCE/src/common/tusb_fifo.c",
      "$pw_third_party_tinyusb_SOURCE/src/tusb.c",
    ]
  }

  ##############################################################################
  # Device side.
  pw_source_set("device") {
    public_configs = [ ":public_includes" ]
    public_deps = [
      ":tinyusb",
      pw_third_party_tinyusb_PORT,
    ]

    # Ports may need to include the device headers.
    allow_circular_includes_from = [ pw_third_party_tinyusb_PORT ]
    sources = [
      "$pw_third_party_tinyusb_SOURCE/src/device/usbd.c",
      "$pw_third_party_tinyusb_SOURCE/src/device/usbd_control.c",
    ]
    public = [
      "$pw_third_party_tinyusb_SOURCE/src/device/dcd.h",
      "$pw_third_party_tinyusb_SOURCE/src/device/usbd.h",
      "$pw_third_party_tinyusb_SOURCE/src/device/usbd_pvt.h",
    ]
  }

  pw_source_set("device_audio") {
    public_configs = [ ":public_includes" ]
    public_deps = [ ":device" ]
    sources =
        [ "$pw_third_party_tinyusb_SOURCE/src/class/audio/audio_device.c" ]
    public = [
      "$pw_third_party_tinyusb_SOURCE/src/class/audio/audio.h",
      "$pw_third_party_tinyusb_SOURCE/src/class/audio/audio_device.h",
    ]
  }

  pw_source_set("device_bth") {
    public_configs = [ ":public_includes" ]
    public_deps = [ ":device" ]
    sources = [ "$pw_third_party_tinyusb_SOURCE/src/class/bth/bth_device.c" ]
    public = [ "$pw_third_party_tinyusb_SOURCE/src/class/bth/bth_device.h" ]
  }

  pw_source_set("device_cdc") {
    public_configs = [ ":public_includes" ]
    public_deps = [ ":device" ]
    sources = [ "$pw_third_party_tinyusb_SOURCE/src/class/cdc/cdc_device.c" ]
    public = [
      "$pw_third_party_tinyusb_SOURCE/src/class/cdc/cdc.h",
      "$pw_third_party_tinyusb_SOURCE/src/class/cdc/cdc_device.h",
    ]
  }

  pw_source_set("device_dfu") {
    public_configs = [ ":public_includes" ]
    public_deps = [ ":device" ]
    sources = [
      "$pw_third_party_tinyusb_SOURCE/src/class/dfu/dfu_device.c",
      "$pw_third_party_tinyusb_SOURCE/src/class/dfu/dfu_rt_device.c",
    ]
    public = [
      "$pw_third_party_tinyusb_SOURCE/src/class/dfu/dfu.h",
      "$pw_third_party_tinyusb_SOURCE/src/class/dfu/dfu_device.h",
      "$pw_third_party_tinyusb_SOURCE/src/class/dfu/dfu_rt_device.h",
    ]
  }

  pw_source_set("device_hid") {
    public_configs = [ ":public_includes" ]
    public_deps = [ ":device" ]
    sources = [ "$pw_third_party_tinyusb_SOURCE/src/class/hid/hid_device.c" ]
    public = [
      "$pw_third_party_tinyusb_SOURCE/src/class/hid/hid.h",
      "$pw_third_party_tinyusb_SOURCE/src/class/hid/hid_device.h",
    ]
  }

  pw_source_set("device_midi") {
    public_configs = [ ":public_includes" ]
    public_deps = [ ":device" ]
    sources = [ "$pw_third_party_tinyusb_SOURCE/src/class/midi/midi_device.c" ]
    public = [
      "$pw_third_party_tinyusb_SOURCE/src/class/midi/midi.h",
      "$pw_third_party_tinyusb_SOURCE/src/class/midi/midi_device.h",
    ]
  }

  pw_source_set("device_msc") {
    public_configs = [ ":public_includes" ]
    public_deps = [ ":device" ]
    sources = [ "$pw_third_party_tinyusb_SOURCE/src/class/msc/msc_device.c" ]
    public = [
      "$pw_third_party_tinyusb_SOURCE/src/class/msc/msc.h",
      "$pw_third_party_tinyusb_SOURCE/src/class/msc/msc_device.h",
    ]
  }

  pw_source_set("device_net") {
    public_configs = [ ":public_includes" ]
    public_deps = [ ":device" ]
    sources = [
      "$pw_third_party_tinyusb_SOURCE/src/class/net/ecm_rndis_device.c",
      "$pw_third_party_tinyusb_SOURCE/src/class/net/ncm_device.c",
    ]
    public = [
      "$pw_third_party_tinyusb_SOURCE/src/class/net/ncm.h",
      "$pw_third_party_tinyusb_SOURCE/src/class/net/net_device.h",
    ]
  }

  pw_source_set("device_usbtmc") {
    public_configs = [ ":public_includes" ]
    public_deps = [ ":device" ]
    sources =
        [ "$pw_third_party_tinyusb_SOURCE/src/class/usbtmc/usbtmc_device.c" ]
    public = [
      "$pw_third_party_tinyusb_SOURCE/src/class/usbtmc/usbtmc.h",
      "$pw_third_party_tinyusb_SOURCE/src/class/usbtmc/usbtmc_device.h",
    ]
  }

  pw_source_set("device_vendor") {
    public_configs = [ ":public_includes" ]
    public_deps = [ ":device" ]
    sources =
        [ "$pw_third_party_tinyusb_SOURCE/src/class/vendor/vendor_device.c" ]
    public =
        [ "$pw_third_party_tinyusb_SOURCE/src/class/vendor/vendor_device.h" ]
  }

  pw_source_set("device_video") {
    public_configs = [ ":public_includes" ]
    public_deps = [ ":common" ]
    sources =
        [ "$pw_third_party_tinyusb_SOURCE/src/class/video/video_device.c" ]
    public = [
      "$pw_third_party_tinyusb_SOURCE/src/class/video/video.h",
      "$pw_third_party_tinyusb_SOURCE/src/class/video/video_device.h",
    ]
  }

  ##############################################################################
  # Host side.
  pw_source_set("host") {
    public_configs = [ ":public_includes" ]
    public_deps = [
      ":tinyusb",
      pw_third_party_tinyusb_PORT,
    ]

    # Ports may need to include the host headers.
    allow_circular_includes_from = [ pw_third_party_tinyusb_PORT ]
    sources = [
      "$pw_third_party_tinyusb_SOURCE/src/host/hub.c",
      "$pw_third_party_tinyusb_SOURCE/src/host/usbh.c",
      "$pw_third_party_tinyusb_SOURCE/src/host/usbh_control.c",
    ]
    public = [
      "$pw_third_party_tinyusb_SOURCE/src/host/hcd.h",
      "$pw_third_party_tinyusb_SOURCE/src/host/hcd_attr.h",
      "$pw_third_party_tinyusb_SOURCE/src/host/hub.h",
      "$pw_third_party_tinyusb_SOURCE/src/host/usbh.h",
      "$pw_third_party_tinyusb_SOURCE/src/host/usbh_classdriver.h",
    ]
  }

  pw_source_set("host_cdc") {
    public_configs = [ ":public_includes" ]
    public_deps = [ ":host" ]
    sources = [
      "$pw_third_party_tinyusb_SOURCE/src/class/cdc/cdc_host.c",
      "$pw_third_party_tinyusb_SOURCE/src/class/cdc/cdc_rndis_host.c",
    ]
    public = [
      "$pw_third_party_tinyusb_SOURCE/src/class/cdc/cdc.h",
      "$pw_third_party_tinyusb_SOURCE/src/class/cdc/cdc_host.h",
      "$pw_third_party_tinyusb_SOURCE/src/class/cdc/cdc_rndis.h",
      "$pw_third_party_tinyusb_SOURCE/src/class/cdc/cdc_rndis_host.h",
    ]
  }

  pw_source_set("host_hid") {
    public_configs = [ ":public_includes" ]
    public_deps = [ ":host" ]
    sources = [ "$pw_third_party_tinyusb_SOURCE/src/class/hid/hid_host.c" ]
    public = [
      "$pw_third_party_tinyusb_SOURCE/src/class/hid/hid.h",
      "$pw_third_party_tinyusb_SOURCE/src/class/hid/hid_host.h",
    ]
  }

  pw_source_set("host_msc") {
    public_configs = [ ":public_includes" ]
    public_deps = [ ":host" ]
    sources = [ "$pw_third_party_tinyusb_SOURCE/src/class/msc/msc_host.c" ]
    public = [
      "$pw_third_party_tinyusb_SOURCE/src/class/msc/msc.h",
      "$pw_third_party_tinyusb_SOURCE/src/class/msc/msc_host.h",
    ]
  }

  pw_source_set("host_vendor") {
    public_configs = [ ":public_includes" ]
    public_deps = [ ":host" ]
    sources =
        [ "$pw_third_party_tinyusb_SOURCE/src/class/vendor/vendor_host.c" ]
    public = [ "$pw_third_party_tinyusb_SOURCE/src/class/vendor/vendor_host.h" ]
  }
}

pw_doc_group("docs") {
  sources = [ "docs.rst" ]
}