cmake_minimum_required(VERSION 3.16)

# Generate version from current date
execute_process(
    COMMAND date "+%Y.%m%d.%H%M"
    OUTPUT_VARIABLE PROJECT_VERSION
    OUTPUT_STRIP_TRAILING_WHITESPACE
)

# Project setup
if(NOT DEFINED PROJECT_NAME)
    message(FATAL_ERROR "PROJECT_NAME is not defined. Pass it via -DPROJECT_NAME=<name>")
endif()

project(${PROJECT_NAME} VERSION ${PROJECT_VERSION} LANGUAGES CXX)

# C++ standard and build configuration
set(CMAKE_CXX_STANDARD 23)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

# Static linking configuration
set(CMAKE_EXE_LINKER_FLAGS "-static -Wl,--allow-multiple-definition")
set(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
set(BUILD_SHARED_LIBS OFF)

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

# Pre-build script
add_custom_target(run_prebuild_script ALL
    COMMAND bash ${CMAKE_CURRENT_SOURCE_DIR}/cmake_prebuild.sh
    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
)

# Source files
file(GLOB_RECURSE SOURCES "src/*.cpp")
set_source_files_properties(${SOURCES} PROPERTIES GENERATED TRUE)

# Create executable
add_executable(${PROJECT_NAME} ${SOURCES})
add_dependencies(${PROJECT_NAME} run_prebuild_script)

# Include directories
target_include_directories(${PROJECT_NAME} PRIVATE 
    ${CMAKE_CURRENT_BINARY_DIR}/src/autogen
    ${CMAKE_CURRENT_SOURCE_DIR}/src
)

# External dependencies
include(FetchContent)
FetchContent_Declare(
    nlohmann_json
    GIT_REPOSITORY https://github.com/nlohmann/json.git
    GIT_TAG v3.12.0
)
FetchContent_MakeAvailable(nlohmann_json)

# Find packages
set(CMAKE_PREFIX_PATH /usr/local)
find_package(OpenSSL REQUIRED)
find_package(Drogon CONFIG REQUIRED)

# Link libraries
target_link_libraries(${PROJECT_NAME} PRIVATE
    nlohmann_json::nlohmann_json
    Drogon::Drogon
    /usr/lib/libunwind.a
    /usr/lib/libunwind-x86_64.a
    /usr/local/lib/libpgcommon.a
    /usr/local/lib/libpgport.a
    lzma
    dl
)