cmake_minimum_required(VERSION 3.20)
project(factory-hole-core LANGUAGES CXX)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

include(FetchContent)

# ---- Core dependencies -------------------------------------------------------

# Flecs ECS
FetchContent_Declare(
    flecs
    GIT_REPOSITORY https://github.com/SanderMertens/flecs.git
    GIT_TAG v4.1.4
    GIT_SHALLOW TRUE
)

# Doctest
FetchContent_Declare(
    doctest
    GIT_REPOSITORY https://github.com/doctest/doctest.git
    GIT_TAG v2.4.12
    GIT_SHALLOW TRUE
)

# GLM – vector/matrix math
FetchContent_Declare(
    glm
    GIT_REPOSITORY https://github.com/g-truc/glm.git
    GIT_TAG 1.0.1
    GIT_SHALLOW TRUE
)

# nlohmann/json – graph serialisation
FetchContent_Declare(
    nlohmann_json
    GIT_REPOSITORY https://github.com/nlohmann/json.git
    GIT_TAG v3.11.3
    GIT_SHALLOW TRUE
)

# ---- World-generation dependencies ------------------------------------------

# FastNoise2 – noise nodes
FetchContent_Declare(
    FastNoise2
    GIT_REPOSITORY https://github.com/Auburn/FastNoise2.git
    GIT_TAG master
    GIT_SHALLOW TRUE
)

# ---- Frontend dependencies (used by tools/) ----------------------------------

# GLFW – windowing for the node-editor tool
FetchContent_Declare(
    glfw
    GIT_REPOSITORY https://github.com/glfw/glfw.git
    GIT_TAG 3.4
    GIT_SHALLOW TRUE
)
set(GLFW_BUILD_DOCS     OFF CACHE BOOL "" FORCE)
set(GLFW_BUILD_TESTS    OFF CACHE BOOL "" FORCE)
set(GLFW_BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)

# Dear ImGui
FetchContent_Declare(
    imgui
    GIT_REPOSITORY https://github.com/ocornut/imgui.git
    GIT_TAG v1.91.6
    GIT_SHALLOW TRUE
)

# ImNodes – node-graph editor widget for ImGui
FetchContent_Declare(
    imnodes
    GIT_REPOSITORY https://github.com/Nelarius/imnodes.git
    GIT_TAG v0.5
    GIT_SHALLOW TRUE
)

# ImGuiFileDialog – file browser widget for the node-editor tool
FetchContent_Declare(
    ImGuiFileDialog
    GIT_REPOSITORY https://github.com/aiekick/ImGuiFileDialog.git
    GIT_TAG v0.6.7
    GIT_SHALLOW TRUE
)

FetchContent_MakeAvailable(flecs doctest glm nlohmann_json glfw imgui imnodes)

# ---- Core library ------------------------------------------------------------

set(SOURCES
    src/Components/Config/WorldConfig.cpp
    src/Components/Support.cpp
    src/Core/WorldInstance.cpp
    src/WorldGraph/WorldGraph.cpp
    src/WorldGraph/WorldGraphSerializer.cpp
    src/WorldGraph/WorldGraphChunk.cpp
)

add_library(factory-hole-core ${SOURCES})

target_include_directories(factory-hole-core PUBLIC
    ${CMAKE_CURRENT_SOURCE_DIR}/include
)

target_link_libraries(factory-hole-core PUBLIC
    flecs::flecs_static
    doctest::doctest
    glm::glm
    nlohmann_json::nlohmann_json
)

# ---- Main executable ---------------------------------------------------------

add_executable(factory-hole-app src/main.cpp)
target_link_libraries(factory-hole-app PRIVATE factory-hole-core)

# ---- Tests -------------------------------------------------------------------

enable_testing()

file(GLOB_RECURSE TEST_SOURCES tests/*.cpp)

add_executable(factory-hole-tests ${TEST_SOURCES})

target_include_directories(factory-hole-tests PRIVATE
    ${CMAKE_CURRENT_SOURCE_DIR}/include
)

target_link_libraries(factory-hole-tests PRIVATE
    factory-hole-core
    doctest::doctest_with_main
)

add_test(NAME factory-hole-tests COMMAND factory-hole-tests)

# ---- Tools -------------------------------------------------------------------

add_subdirectory(tools/node-editor)