# -*- cmake -*-

set(default_opsys ${CMAKE_SYSTEM_NAME})
if(default_opsys MATCHES "Linux|Android")
  set(default_opsys GNU/Linux)
endif()

set(default_machine ${CMAKE_SYSTEM_PROCESSOR})
if(default_machine MATCHES "^(amd64|AMD64)$")
  set(default_machine x86_64)
elseif(default_machine MATCHES "^(armv6l|armv7l|armv7-a)$")
  set(default_machine arm)
elseif(default_machine STREQUAL "ppc64")
  set(default_machine powerpc)
elseif(default_machine STREQUAL "aarch64")
  set(default_machine a64)
endif()

set(TCF_MACHINE ${default_machine} CACHE STRING "TCF machine")
set(TCF_OPSYS ${default_opsys} CACHE STRING "TCF operating system")

if (NOT TCF_DIR)
   set(TCF_DIR ${CMAKE_CURRENT_LIST_DIR})
endif()

if (NOT TCF_LIB_NAME)
   set(TCF_LIB_NAME tcf)
endif()

set(TCF_BASE_DIR ${TCF_DIR}/agent)

# sources to build
set(TCF_SRCS)

# get all regular source files
file(GLOB TCF_SRCS_REL RELATIVE ${TCF_BASE_DIR}
	${TCF_BASE_DIR}/system/${TCF_OPSYS}/tcf/*.c
	${TCF_BASE_DIR}/machine/${TCF_MACHINE}/tcf/*.c
	${TCF_BASE_DIR}/tcf/framework/*.c
	${TCF_BASE_DIR}/tcf/services/*.c
	${TCF_BASE_DIR}/tcf/main/*.c
	${TCF_BASE_DIR}/tcf/http/*.c)

if(TCF_MACHINE STREQUAL "a64")
  list(APPEND TCF_SRCS_REL machine/arm/tcf/stack-crawl-arm.c)
  list(APPEND TCF_SRCS_REL machine/arm/tcf/disassembler-arm.c)
  list(APPEND TCF_SRCS_REL machine/arm/tcf/disassembler-thumb.c)
endif()

# remove non-library files
file(GLOB TCF_MAIN_REL RELATIVE ${TCF_BASE_DIR}
	${TCF_BASE_DIR}/tcf/main/main*.c)
list(REMOVE_ITEM TCF_SRCS_REL ${TCF_MAIN_REL})

if(DEFINED TCF_EXTRA_DIR)
  foreach(extraDir ${TCF_EXTRA_DIR})
    # get extra all source files
    file(GLOB_RECURSE TCF_EXTRA_SRCS_REL RELATIVE ${extraDir}
      ${extraDir}/system/${TCF_OPSYS}/tcf/*.c
      ${extraDir}/machine/${TCF_MACHINE}/tcf/*.c
      ${extraDir}/tcf/framework/*.c
      ${extraDir}/tcf/services/*.c
      ${extraDir}/tcf/main/*.c
      ${extraDir}/tcf/http/*.c)

    # Override regular files with extra files
    list (LENGTH TCF_EXTRA_SRCS_REL LEN_TCF_EXTRA_SRCS_REL)

    if (NOT LEN_TCF_EXTRA_SRCS_REL EQUAL 0)
      list(REMOVE_ITEM TCF_SRCS_REL ${TCF_EXTRA_SRCS_REL})
    endif ()
    
    foreach(file ${TCF_EXTRA_SRCS_REL})
      list(APPEND TCF_SRCS ${extraDir}/${file})
    endforeach(file)
  endforeach(extraDir)
endif()

foreach(file ${TCF_SRCS_REL})
  list(APPEND TCF_SRCS ${TCF_BASE_DIR}/${file})
endforeach(file)

if(DEFINED TCF_EXTRA_DIR)
  foreach(extraDir ${TCF_EXTRA_DIR})
    include_directories(${extraDir} ${extraDir}/system/${TCF_OPSYS} ${extraDir}/machine/${TCF_MACHINE})
  endforeach(extraDir)
endif()

include_directories(${TCF_BASE_DIR} ${TCF_BASE_DIR}/system/${TCF_OPSYS} ${TCF_BASE_DIR}/machine/${TCF_MACHINE})

add_library(${TCF_LIB_NAME} ${TCF_LIB_TYPE} ${TCF_SRCS})
find_package(Threads)
target_link_libraries(${TCF_LIB_NAME} Threads::Threads)
find_library(LIBRT rt)
if(LIBRT)
  target_link_libraries(${TCF_LIB_NAME} ${LIBRT})
endif()
find_library(LIBUUID uuid)
if(LIBUUID)
  target_link_libraries(${TCF_LIB_NAME} ${LIBUUID})
else()
  target_compile_definitions(${TCF_LIB_NAME} PUBLIC USE_uuid_generate=0)
endif()
if(WIN32)
  target_link_libraries(${TCF_LIB_NAME} version.lib psapi.lib ws2_32 iphlpapi)
endif()
if(ANDROID)
  find_library(LIBLOG log)
  target_link_libraries(${TCF_LIB_NAME} ${LIBLOG})
endif()
if(SSL_LIB_NAME)
  target_link_libraries(${TCF_LIB_NAME} ${SSL_LIB_NAME})
else()
  add_definitions("-DENABLE_SSL=0")
endif()

if(DEFINED TCF_PLUGIN_PATH)
  add_definitions(-DPATH_Plugins=${TCF_PLUGIN_PATH})
  if (UNIX)
    target_link_libraries(${TCF_LIB_NAME} dl)
  endif()
endif()

if (LIBWEBSOCKETSDIR)
  find_library(LIBWEBSOCKETS NAME "websockets" PATHS ${LIBWEBSOCKETSDIR}/lib NO_DEFAULT_PATH)
  if (${LIBWEBSOCKETS} STREQUAL "LIBWEBSOCKETS-NOTFOUND")
    message(FATAL_ERROR "ERROR: Could not find libwebsockets library in directory: " ${LIBWEBSOCKETSDIR})
  else()
    message(STATUS "Found libwebsockets library: ${LIBWEBSOCKETS}")
  endif()
  include_directories(${LIBWEBSOCKETSDIR}/include/)
  target_link_libraries(${TCF_LIB_NAME} ${LIBWEBSOCKETS})
  add_definitions("-DENABLE_LibWebSockets=1")
  INCLUDE (${CMAKE_ROOT}/Modules/FindOpenSSL.cmake)
  if (NOT OPENSSL_FOUND)
    message(FATAL_ERROR "ERROR: Could not find OpenSSL!!!")
  endif(NOT OPENSSL_FOUND)
  include_directories(${OPENSSL_INCLUDE_DIR})
  target_link_libraries(${TCF_LIB_NAME} ${OPENSSL_LIBRARIES})
endif()