cmake_minimum_required(VERSION 3.10)
project(TerraVisor)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

# Define output directories for different configurations
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})

set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG "${CMAKE_BINARY_DIR}")
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_RELEASE "${CMAKE_BINARY_DIR}")

# Add source files
file(GLOB_RECURSE SOURCES
  "${CMAKE_SOURCE_DIR}/src/*.cpp"
)

# Add header files
file(GLOB_RECURSE HEADERS
  "${CMAKE_SOURCE}/headers/*.h"
)

# Add shader files
file(GLOB SHADERS
  "${CMAKE_SOURCE_DIR}/shaders/*.glsl"
)

# Include directories
include_directories(
  ${CMAKE_SOURCE_DIR}/include    # Third-party headers
  ${CMAKE_SOURCE_DIR}/headers    # Project headers
)

# Link directories for libraries
link_directories(${CMAKE_SOURCE_DIR}/lib)
  
# Add the executable
add_executable(TerraVisor ${SOURCES} ${HEADERS})

# Link libraries
target_link_libraries(TerraVisor glew32 glfw3 opengl32)

# Include directories for the target
target_include_directories(TerraVisor PRIVATE ${CMAKE_SOURCE_DIR}/include ${CMAKE_SOURCE_DIR}/include/GL ${CMAKE_SOURCE_DIR}/include/GLFW ${CMAKE_SOURCE_DIR}/headers)

# Custom target for shaders
add_custom_target(copy_shaders ALL
  COMMAND ${CMAKE_COMMAND} -E copy_directory
  ${CMAKE_SOURCE_DIR}/shaders ${CMAKE_BINARY_DIR}/shaders
)

# Set subsystem based on build type
if (WIN32)
    if (CMAKE_BUILD_TYPE STREQUAL "Release")
        set_target_properties(TerraVisor PROPERTIES LINK_FLAGS "-Wl,--subsystem,windows")
    else()
        set_target_properties(TerraVisor PROPERTIES LINK_FLAGS "-Wl,--subsystem,console")
    endif()
endif()

# Ensure shaders are copied before building the executable
add_dependencies(TerraVisor copy_shaders)