cmake_minimum_required(VERSION 3.20)

# -----------------------------
# Project setup
# -----------------------------
# Use Clang explicitly (you can override from CLI if needed)
set(CMAKE_C_COMPILER clang)
set(CMAKE_CXX_COMPILER clang++)

project(email-tracker LANGUAGES C CXX)

set(CMAKE_CXX_STANDARD 23)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
set(CMAKE_BUILD_TYPE Release)

# -----------------------------
# Dependencies (all local submodules)
# -----------------------------
add_subdirectory(external/fmt)
add_subdirectory(external/spdlog)
add_subdirectory(external/tomlplusplus)
add_subdirectory(external/duckdb)
add_subdirectory(external/json)
add_subdirectory(external/BLAKE3/c)
add_subdirectory(external/cpp-httplib)

# -----------------------------
# Executables
# -----------------------------
add_executable(${PROJECT_NAME}-client src/main-tracker.cpp)
add_executable(${PROJECT_NAME}-daemon src/main-daemon.cpp)

# -----------------------------
# Common libraries
# -----------------------------
set(COMMON_LIBS
    fmt
    spdlog
    tomlplusplus
    duckdb_static
    nlohmann_json
    blake3
    # cpp-httplib
)

# -----------------------------
# External include directories
# -----------------------------
set(EXTERNAL_INCLUDES
    ${CMAKE_CURRENT_SOURCE_DIR}/external/fmt/include
    ${CMAKE_CURRENT_SOURCE_DIR}/external/spdlog/include
    ${CMAKE_CURRENT_SOURCE_DIR}/external/tomlplusplus/include
    ${CMAKE_CURRENT_SOURCE_DIR}/external/duckdb/src/include
    ${CMAKE_CURRENT_SOURCE_DIR}/external/json/include/nlohmann
    ${CMAKE_CURRENT_SOURCE_DIR}/external/BLAKE3/c
    ${CMAKE_CURRENT_SOURCE_DIR}/external/cpp-httplib
)

# -----------------------------
# Automatically include all header directories under src/
# -----------------------------
file(GLOB_RECURSE SRC_SUBDIRS LIST_DIRECTORIES true "${CMAKE_CURRENT_SOURCE_DIR}/src/*")
set(SRC_INCLUDES "")
foreach(dir ${SRC_SUBDIRS})
    if(IS_DIRECTORY ${dir})
        list(APPEND SRC_INCLUDES ${dir})
    endif()
endforeach()

# -----------------------------
# Automatically include all .cpp files under src/
# Exclude main files to avoid multiple main() definitions
# -----------------------------
file(GLOB_RECURSE ALL_CPP "${CMAKE_CURRENT_SOURCE_DIR}/src/*.cpp")
list(REMOVE_ITEM ALL_CPP
    "${CMAKE_CURRENT_SOURCE_DIR}/src/main-tracker.cpp"
    "${CMAKE_CURRENT_SOURCE_DIR}/src/main-daemon.cpp"
)

# -----------------------------
# Apply configuration to all targets
# -----------------------------
foreach(target ${PROJECT_NAME}-client ${PROJECT_NAME}-daemon)
    target_link_libraries(${target} PRIVATE ${COMMON_LIBS})
    target_include_directories(${target} PRIVATE ${EXTERNAL_INCLUDES} ${SRC_INCLUDES})
    target_sources(${target} PRIVATE ${ALL_CPP})
endforeach()

# -----------------------------
# Optional: warnings and strict flags for Clang
# -----------------------------
if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
    add_compile_options(-Wall -Wextra -Wpedantic -Wconversion)
endif()