# Get the current date in yyyy.mmdd.hhmm format
execute_process(
    COMMAND date "+%Y.%m%d.%H%M"
    OUTPUT_VARIABLE PROJECT_VERSION
    OUTPUT_STRIP_TRAILING_WHITESPACE
)

cmake_minimum_required(VERSION 3.10)
get_filename_component(PROJECT_EXE_NAME "${CMAKE_CURRENT_SOURCE_DIR}" NAME)
project(${PROJECT_EXE_NAME} VERSION ${PROJECT_VERSION} LANGUAGES CXX)

# Force static linking globally
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static")
set(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
set(BUILD_SHARED_LIBS OFF CACHE BOOL "Build shared libraries" FORCE)
set(CMAKE_POSITION_INDEPENDENT_CODE OFF)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -static")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -static")
set(ZLIB_USE_STATIC_LIBS "ON")

set(CMAKE_CXX_STANDARD 23)
set(CMAKE_C_STANDARD 23)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

# Set default build type to Release if not specified
if(NOT CMAKE_BUILD_TYPE)
  set(CMAKE_BUILD_TYPE "Release" CACHE STRING "Choose the type of build (Debug or Release)" FORCE)
endif()

# Configure build-specific compiler flags
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -g")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O3 -DNDEBUG")

# Configure version.hpp file
configure_file(
    "${CMAKE_CURRENT_SOURCE_DIR}/src/version.hpp.in"
    "${CMAKE_CURRENT_BINARY_DIR}/src/autogen/version.hpp"
    @ONLY
)

# Set CMAKE_MODULE_PATH to include our custom find modules
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/cmake)

# Auto-detect source files
file(GLOB_RECURSE SOURCES "src/*.cpp")
file(GLOB_RECURSE HEADERS "src/*.hpp")
file(GLOB_RECURSE HEADERS "src/*.h")

# Add custom target to run cmake_prebuild.sh at the start of the build process
add_custom_target(run_prebuild_script ALL
    COMMAND ${CMAKE_COMMAND} -E echo "Running cmake_prebuild.sh..."
    COMMAND ${CMAKE_COMMAND} -E env bash ${CMAKE_CURRENT_SOURCE_DIR}/cmake_prebuild.sh
    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
)

# Add executable
add_executable(${PROJECT_EXE_NAME} ${SOURCES})
add_dependencies(${PROJECT_EXE_NAME} run_prebuild_script)

# Set include directories
# build dir goes first so that we can use the generated version.hpp
target_include_directories(${PROJECT_EXE_NAME} PRIVATE 
    $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/src/autogen>
    ${CMAKE_CURRENT_SOURCE_DIR}/src
)

# Configure libassert
include(FetchContent)
FetchContent_Declare(
  libassert
  GIT_REPOSITORY https://github.com/jeremy-rifkin/libassert.git
  GIT_TAG        v2.1.5
)
FetchContent_MakeAvailable(libassert)

# Add cpptrace
FetchContent_Declare(
  cpptrace
  GIT_REPOSITORY https://github.com/jeremy-rifkin/cpptrace.git
  GIT_TAG        v0.8.3
)
FetchContent_MakeAvailable(cpptrace)

# Add nlohmann/json
FetchContent_Declare(
  nlohmann_json
  GIT_REPOSITORY https://github.com/nlohmann/json.git
  GIT_TAG        v3.11.3
)
FetchContent_MakeAvailable(nlohmann_json)

# Link libraries
target_link_libraries(${PROJECT_EXE_NAME} PRIVATE
    libassert::assert
    cpptrace::cpptrace
    nlohmann_json::nlohmann_json
    ${CMAKE_SYSROOT}/usr/lib/libunwind.a
)

# Set static linking flags
set_target_properties(${PROJECT_EXE_NAME} PROPERTIES
    LINK_FLAGS "-static"
)