cmake_minimum_required(VERSION 3.8)
project(qpoases_colcon)

set(CMAKE_BUILD_TYPE Release)

# find dependencies
find_package(ament_cmake REQUIRED)
include(FetchContent)

# Define directories
set(QPOASES_DEVEL_PREFIX ${CMAKE_INSTALL_PREFIX} CACHE STRING "QPOASES install path")
set(QPOASES_INCLUDE_DIR ${QPOASES_DEVEL_PREFIX}/include)
set(QPOASES_LIB_DIR ${QPOASES_DEVEL_PREFIX}/lib)
set(QPOASES_DOWNLOAD_DIR ${CMAKE_CURRENT_BINARY_DIR}/download)
set(QPOASES_BUILD_DIR ${CMAKE_CURRENT_BINARY_DIR}/build)

# Create directories if they do not exist
file(MAKE_DIRECTORY ${QPOASES_INCLUDE_DIR})
file(MAKE_DIRECTORY ${QPOASES_LIB_DIR})
file(MAKE_DIRECTORY ${QPOASES_DOWNLOAD_DIR})
file(MAKE_DIRECTORY ${QPOASES_BUILD_DIR})

# QPOASES Settings
set(BUILD_SHARED_LIBS ON CACHE STRING "Build shared libraries" FORCE)
set(QPOASES_BUILD_EXAMPLES OFF CACHE BOOL "Examples disable")

# Download & build source
FetchContent_Declare(qpoasesDownload
        GIT_REPOSITORY https://github.com/coin-or/qpOASES
        UPDATE_COMMAND ""
        SOURCE_DIR ${QPOASES_DOWNLOAD_DIR}
        BINARY_DIR ${QPOASES_BUILD_DIR}
        BUILD_COMMAND $(MAKE)
        INSTALL_COMMAND "$(MAKE) install"
)
FetchContent_MakeAvailable(qpoasesDownload)

# Copy header to where ament_cmake expects them
file(COPY ${QPOASES_DOWNLOAD_DIR}/include/qpOASES.hpp DESTINATION ${QPOASES_INCLUDE_DIR})

file(GLOB_RECURSE HEADERS "${QPOASES_DOWNLOAD_DIR}/include/qpOASES/*")
foreach (HEADER_FILE ${HEADERS})
  message(STATUS "FOUND HEADER: " ${HEADER_FILE})
  file(COPY ${HEADER_FILE} DESTINATION ${QPOASES_INCLUDE_DIR}/qpOASES)
endforeach ()

file(GLOB_RECURSE HEADERS "${QPOASES_DOWNLOAD_DIR}/include/qpOASES/extras/*")
foreach (HEADER_FILE ${HEADERS})
  message(STATUS "FOUND HEADER: " ${HEADER_FILE})
  file(COPY ${HEADER_FILE} DESTINATION ${QPOASES_INCLUDE_DIR}/qpOASES/extras)
endforeach ()

# Propagate dependencies
ament_export_include_directories(${QPOASES_INCLUDE_DIR})
ament_export_libraries(qpOASES)

install(TARGETS qpOASES
        LIBRARY DESTINATION lib)

ament_package()