#
#  Copyright 2021 Google, Inc.
#
#  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:
#
#  http://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.
#

# Generate single c++ headers for each pdl
#
# Parameters:
#   include: Base include path (i.e. bt/gd)
#   source_root: Root of source relative to current BUILD.gn
#   sources: PDL files to use for generation.
template("packetgen_headers") {
  all_dependent_config_name = "_${target_name}_all_dependent_config"
  config(all_dependent_config_name) {
    include_dirs = [ "${root_gen_dir}" ]
  }

  action(target_name) {
    forward_variables_from(invoker, [ "include", "sources", "source_root" ])
    assert(defined(sources), "sources must be set")
    assert(defined(include), "include must be set")
    assert(defined(source_root), "source root must be set")

    outdir = rebase_path(root_gen_dir)
    source_root = rebase_path(source_root)

    script = "//common-mk/file_generator_wrapper.py"
    binfile = "${root_out_dir}/bluetooth_packetgen"
    args = [
      binfile,
      "--include=${include}",
      "--out=${outdir}",
      "--source_root=${source_root}",
    ]

    outputs = []
    foreach (source, sources) {
      rel_source = rebase_path(source, ".")
      args += [ rebase_path(source, source_root) ]
      outputs += [ string_replace("${outdir}/${rel_source}.h", ".pdl", "") ]
    }

    all_dependent_configs = [ ":${all_dependent_config_name}" ]
    if (defined(invoker.all_dependent_configs)) {
      all_dependent_configs += invoker.all_dependent_configs
    }

    if (defined(invoker.configs)) {
      configs += invoker.configs
    }
  }
}