# Copyright 2021 Google LLC
#
# 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.

project(
    'metrics-ipmi-blobs',
    ['cpp', 'c'],
    version: '0.1',
    default_options: [
        'warning_level=3',
        'werror=true',
        'cpp_std=c++23',
        'c_std=c18',
        'tests=' + (meson.is_subproject() ? 'disabled' : 'auto'),
    ],
)

nanopb = find_program('nanopb_generator.py', native: true, required: false)
if not nanopb.found()
    nanopb_opts = import('cmake').subproject_options()
    nanopb_opts.add_cmake_defines({'BUILD_SHARED_LIBS': 'ON'})
    nanopb_proj = import('cmake').subproject('nanopb', options: nanopb_opts)
    nanopb = find_program(
        meson.global_source_root() + '/subprojects/nanopb/generator/nanopb_generator.py',
        native: true,
    )
    nanopb_dep = nanopb_proj.dependency('protobuf_nanopb')
else
    nanopb_dep = meson.get_compiler('cpp').find_library('protobuf-nanopb')
endif

nanopb_kwargs = {
    'output': ['@BASENAME@.pb.n.h', '@BASENAME@.pb.n.c'],
    'command': [
        nanopb,
        '-q',
        '-s',
        'packed_struct:0',
        '-H.n.h',
        '-S.n.c',
        '-I' + import('fs').relative_to(
            meson.current_source_dir(),
            meson.global_build_root(),
        ),
        '-D' + import('fs').relative_to(
            meson.current_build_dir(),
            meson.global_build_root(),
        ),
        '@INPUT@',
    ],
}

tgt = custom_target(
    'metricblob.pb.n.hc',
    input: 'metricblob.proto',
    kwargs: nanopb_kwargs,
)
metrics_nanopb_hdr = tgt[0]
metrics_nanopb_src = tgt[1]

metrics_nanopb_pre = declare_dependency(
    include_directories: include_directories('.'),
    sources: metrics_nanopb_hdr,
    dependencies: [nanopb_dep],
)

metrics_nanopb_lib = static_library(
    'metrics_nanopb',
    metrics_nanopb_src,
    implicit_include_directories: false,
    dependencies: metrics_nanopb_pre,
)

metrics_nanopb_dep = declare_dependency(
    dependencies: metrics_nanopb_pre,
    link_with: metrics_nanopb_lib,
)

pre = declare_dependency(
    include_directories: include_directories('.'),
    dependencies: [
        metrics_nanopb_dep,
        dependency('phosphor-logging'),
        dependency('phosphor-ipmi-blobs'),
        dependency('sdbusplus'),
    ],
)

lib = static_library(
    'metricsblob',
    'util.cpp',
    'handler.cpp',
    'metric.cpp',
    implicit_include_directories: false,
    dependencies: pre,
)

dep = declare_dependency(dependencies: pre, link_with: lib)

shared_module(
    'metricsblob',
    'main.cpp',
    dependencies: dep,
    implicit_include_directories: false,
    install: true,
    install_dir: get_option('libdir') / 'blob-ipmid',
)

if get_option('tests').allowed()
    subdir('test')
endif