cmake_minimum_required(VERSION 3.16)

project(douwco_hivemind CXX)

set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED On)

# Generate compile commands
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

# Set the Emscripten toolchain
set(CMAKE_TOOLCHAIN_FILE ${EMSCRIPTEN_ROOT}/cmake/Modules/Platform/Emscripten.cmake CACHE STRING "")

# set(COMPILE_FLAGS --cache ${CMAKE_BINARY_DIR}/cache)
set(LINK_FLAGS -sASSERTIONS=0 -sMALLOC=emmalloc)
add_compile_options(${COMPILE_FLAGS})
add_link_options(${COMPILE_FLAGS} ${LINK_FLAGS})

add_subdirectory(screepsxx)


# If you change TARGET_NAME, please, make corresponding changes in main.js.
set(TARGET_NAME douwco_hivemind)

include_directories(${CMAKE_SOURCE_DIR}/douwco_hivemind/include)

file(GLOB SRC_FILES ${CMAKE_SOURCE_DIR}/douwco_hivemind/src/*.cpp
                    ${CMAKE_SOURCE_DIR}/douwco_hivemind/src/*/*.cpp)
add_executable(${TARGET_NAME} ${SRC_FILES})
target_link_libraries(${TARGET_NAME} screepsxx)
target_link_options(${TARGET_NAME} PUBLIC -sMODULARIZE=1 --no-entry --bind -sEXPORT_ES6=0)

# Post-process compile_commands.json to remove Emscripten flags
add_custom_command(
    TARGET ${TARGET_NAME} POST_BUILD
    COMMAND ${CMAKE_COMMAND} -E echo "Cleaning compile_commands.json for clangd..."
    COMMAND python3 ${CMAKE_SOURCE_DIR}/clean_compile_commands.py
            ${CMAKE_BINARY_DIR}/compile_commands.json
    COMMENT "Post-processing compile_commands.json for clangd compatibility"
)

# Symlink compile_commands.json to project root for clangd
add_custom_command(
    TARGET ${TARGET_NAME} POST_BUILD
    COMMAND ${CMAKE_COMMAND} -E create_symlink
            ${CMAKE_BINARY_DIR}/compile_commands.json
            ${CMAKE_SOURCE_DIR}/compile_commands.json
    COMMENT "Symlinking compile_commands.json to project root for clangd"
)

# Collect all artifacts in 'dist' directory
# WASM-module and corresponding JS-module must have different base names in order to use them in Screeps, so we add suffixes.
add_custom_command(TARGET ${TARGET_NAME} POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_BINARY_DIR}/${TARGET_NAME}.wasm ${CMAKE_SOURCE_DIR}/dist/${TARGET_NAME}_module.wasm)
add_custom_command(TARGET ${TARGET_NAME} POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_BINARY_DIR}/${TARGET_NAME}.js ${CMAKE_SOURCE_DIR}/dist/${TARGET_NAME}_loader.js)
add_custom_command(TARGET ${TARGET_NAME} POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_SOURCE_DIR}/js/main.js ${CMAKE_SOURCE_DIR}/dist/main.js)
add_custom_command(TARGET ${TARGET_NAME} POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_SOURCE_DIR}/js/wasm_loader.js ${CMAKE_SOURCE_DIR}/dist/wasm_loader.js)