cmake_minimum_required(VERSION 3.14)
project({{PROJECT_NAME}}_tests LANGUAGES CXX)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

# --------------------------------------------------------------------------
# Google Test (fetched automatically on first build)
# --------------------------------------------------------------------------
include(FetchContent)
FetchContent_Declare(
    googletest
    GIT_REPOSITORY https://github.com/google/googletest.git
    GIT_TAG        v1.14.0
)
set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
FetchContent_MakeAvailable(googletest)

enable_testing()

# --------------------------------------------------------------------------
# Include paths -- same headers the Arduino sketch uses
# --------------------------------------------------------------------------
set(LIB_DIR ${CMAKE_SOURCE_DIR}/../lib)

include_directories(
    ${LIB_DIR}/hal
    ${LIB_DIR}/app
    ${CMAKE_SOURCE_DIR}/mocks
)

# Auto-discover driver libraries (added by: anvil add <driver>)
if(IS_DIRECTORY ${LIB_DIR}/drivers)
    file(GLOB DRIVER_DIRS ${LIB_DIR}/drivers/*)
    foreach(DRIVER_DIR ${DRIVER_DIRS})
        if(IS_DIRECTORY ${DRIVER_DIR})
            include_directories(${DRIVER_DIR})
        endif()
    endforeach()
endif()

# --------------------------------------------------------------------------
# Mock Arduino library -- provides Arduino API on x86_64
# --------------------------------------------------------------------------
add_library(mock_arduino STATIC
    mocks/mock_arduino.cpp
)
target_include_directories(mock_arduino PUBLIC
    ${CMAKE_SOURCE_DIR}/mocks
    ${LIB_DIR}/hal
    ${LIB_DIR}/app
)

# --------------------------------------------------------------------------
# Unit tests (Google Mock -- verifies exact HAL call sequences)
# --------------------------------------------------------------------------
add_executable(test_unit
    test_unit.cpp
)
target_link_libraries(test_unit
    GTest::gtest_main
    GTest::gmock
    mock_arduino
)

# --------------------------------------------------------------------------
# System tests (SimHal -- exercises full application logic)
# --------------------------------------------------------------------------
add_executable(test_system
    test_system.cpp
)
target_link_libraries(test_system
    GTest::gtest_main
    mock_arduino
)

# --------------------------------------------------------------------------
# Register with CTest
# --------------------------------------------------------------------------
include(GoogleTest)
gtest_discover_tests(test_unit)
gtest_discover_tests(test_system)

# --------------------------------------------------------------------------
# Driver tests (added automatically by: anvil add <driver>)
# --------------------------------------------------------------------------
file(GLOB DRIVER_TEST_SOURCES ${CMAKE_SOURCE_DIR}/test_*.cpp)
# Exclude test_unit.cpp and test_system.cpp (already handled above)
list(FILTER DRIVER_TEST_SOURCES EXCLUDE REGEX "test_unit\\.cpp$")
list(FILTER DRIVER_TEST_SOURCES EXCLUDE REGEX "test_system\\.cpp$")

foreach(TEST_SOURCE ${DRIVER_TEST_SOURCES})
    get_filename_component(TEST_NAME ${TEST_SOURCE} NAME_WE)
    add_executable(${TEST_NAME} ${TEST_SOURCE})
    target_link_libraries(${TEST_NAME}
        GTest::gtest_main
        GTest::gmock
        mock_arduino
    )
    gtest_discover_tests(${TEST_NAME})
endforeach()