cmake_minimum_required(VERSION "3.27.0")

project("acpi"
  DESCRIPTION "An ACPI parsing library"
  VERSION "0.0.1"
  LANGUAGES ASM CXX
)

include("CTest")

#[============================================================================[
# External Dependencies
#]============================================================================]

include("FetchContent")

if (BUILD_TESTING)
  FetchContent_Declare(
    "Catch2"
    URL "https://github.com/catchorg/Catch2/archive/refs/tags/v3.7.1.tar.gz"
    URL_HASH "SHA256=c991b247a1a0d7bb9c39aa35faf0fe9e19764213f28ffba3109388e62ee0269c"
    EXCLUDE_FROM_ALL
    FIND_PACKAGE_ARGS
  )

  FetchContent_MakeAvailable("Catch2")

  find_package("Catch2")
  include("Catch")
endif()

#[============================================================================[
# Library
#]============================================================================]

add_library("acpi" STATIC)
add_library("acpi::lib" ALIAS "acpi")

target_sources("acpi" PRIVATE
  "acpi/common/checksum.cpp"
  "acpi/common/table_header.cpp"
  "acpi/data/madt.cpp"
  "acpi/data/rsdt.cpp"
  "acpi/data/xsdt.cpp"
  "acpi/pointers.cpp"
)

file(GLOB_RECURSE ACPI_HEADERS
  CONFIGURE_DEPENDS
  RELATIVE ${CMAKE_CURRENT_SOURCE_DIR}
  "acpi/*.hpp"
)

target_sources("acpi" PUBLIC
  FILE_SET HEADERS
  BASE_DIRS "acpi"
  FILES
  ${ACPI_HEADERS}
)

target_include_directories("acpi" PUBLIC
  "${CMAKE_CURRENT_SOURCE_DIR}"
)

target_link_libraries("acpi" PUBLIC
  "kstd::lib"
)

set_target_properties("acpi" PROPERTIES
    VERIFY_INTERFACE_HEADER_SETS YES
)

#[============================================================================[
# Tests
#]============================================================================]

if(BUILD_TESTING)
  find_program(IASL_EXE NAMES "iasl" REQUIRED)

  set(TEST_TABLES
    "basic_madt"
    "basic_rsdt"
    "basic_rsdp"
    "basic_xsdt"
    "table_header"
  )

  foreach(TABLE IN LISTS TEST_TABLES)
    add_custom_command(OUTPUT "test_data/${TABLE}.aml"
      COMMAND "${IASL_EXE}" -p "test_data/${TABLE}.aml" "${CMAKE_CURRENT_SOURCE_DIR}/test_data/${TABLE}.asl"
      DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/test_data/${TABLE}.asl"
      COMMENT "Compiling test_data/${TABLE}.asl"
      VERBATIM
    )
    list(APPEND GENERATED_TABLE_BLOBS "${CMAKE_CURRENT_BINARY_DIR}/test_data/${TABLE}.aml")
  endforeach()

  set_source_files_properties("test_data/tables.S" PROPERTIES OBJECT_DEPENDS "${GENERATED_TABLE_BLOBS}")

  if(COMMAND "enable_coverage")
    enable_coverage("acpi")
  endif()

  add_executable("acpi_tests")
  add_executable("acpi::tests" ALIAS "acpi_tests")

  target_sources("acpi_tests" PRIVATE
    "acpi/common/table_header.test.cpp"
    "acpi/data/madt.test.cpp"
    "acpi/data/rsdt.test.cpp"
    "acpi/data/xsdt.test.cpp"
    "acpi/pointers.test.cpp"

    "test_data/tables.S"
  )

  target_include_directories("acpi_tests" PRIVATE
    "${CMAKE_CURRENT_BINARY_DIR}/test_data"
  )

  target_link_libraries("acpi_tests" PRIVATE
    "Catch2::Catch2WithMain"
    "acpi::lib"
  )

  set_target_properties("acpi_tests" PROPERTIES
    C_CLANG_TIDY ""
    CXX_CLANG_TIDY ""
    EXCLUDE_FROM_ALL NO
  )

  catch_discover_tests("acpi_tests")
endif()