cmake_minimum_required(VERSION 2.8)

INCLUDE(FindProtobuf)
FIND_PACKAGE(Protobuf REQUIRED)

# Gtest source archive to use
SET(GTEST_ARCHIVE gtest-1.7.0.zip)
# Where to download archive (if it doesn't exist)
SET(GTEST_DLSERVER http://googletest.googlecode.com/files)
SET(GTEST_ROOT $ENV{HOME}/Downloads/gtest-1.7.0)

function(PROTOBUF_GENERATE_PHP SRCS)
  if(NOT ARGN)
    message(SEND_ERROR "Error: PROTOBUF_GENERATE_PHP() called without any proto files")
    return()
  endif(NOT ARGN)

  if(PROTOBUF_GENERATE_PHP_APPEND_PATH)
    # Create an include path for each file specified
    foreach(FIL ${ARGN})
      get_filename_component(ABS_FIL ${FIL} ABSOLUTE)
      get_filename_component(ABS_PATH ${ABS_FIL} PATH)
      list(FIND _protobuf_include_path ${ABS_PATH} _contains_already)
      if(${_contains_already} EQUAL -1)
          list(APPEND _protobuf_include_path -I ${ABS_PATH})
      endif()
    endforeach()
  else()
    set(_protobuf_include_path -I ${CMAKE_CURRENT_SOURCE_DIR})
  endif()

  set(${SRCS})
  foreach(FIL ${ARGN})
    get_filename_component(ABS_FIL ${FIL} ABSOLUTE)
    get_filename_component(FIL_WE ${FIL} NAME_WE)

    list(APPEND ${SRCS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.proto.php")
    add_custom_command(
      OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.proto.php"
      COMMAND  ${PROTOBUF_PROTOC_EXECUTABLE}
      ARGS --plugin /usr/local/bin/protoc-gen-php --php_out ${CMAKE_CURRENT_BINARY_DIR} ${_protobuf_include_path}  ${ABS_FIL}
      DEPENDS ${ABS_FIL}
      COMMENT "Running PHP protocol buffer compiler on ${FIL}"
      VERBATIM )
    add_custom_target(protoc-gen-php ALL DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.proto.php")
  endforeach()

  set_source_files_properties(${${SRCS}} PROPERTIES GENERATED TRUE)
  set(${SRCS} ${${SRCS}} PARENT_SCOPE)
endfunction()

IF(NOT EXISTS ${CMAKE_CURRENT_BINARY_DIR}/${GTEST_ARCHIVE})
	MESSAGE("Downloading file: ${CMAKE_SOURCE_DIR}/${GTEST_ARCHIVE}")
	FILE(DOWNLOAD ${GTEST_DLSERVER}/${GTEST_ARCHIVE}
		${CMAKE_CURRENT_BINARY_DIR}/${GTEST_ARCHIVE})

	EXECUTE_PROCESS(COMMAND cmake -E tar zxf ${GTEST_ARCHIVE}
		WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})

	ADD_SUBDIRECTORY(${CMAKE_CURRENT_BINARY_DIR}/gtest-1.7.0 gtest-1.7.0)
	INCLUDE_DIRECTORIES(${CMAKE_CURRENT_BINARY_DIR}/include ${CMAKE_CURRENT_BINARY_DIR})
ENDIF(NOT EXISTS ${CMAKE_CURRENT_BINARY_DIR}/${GTEST_ARCHIVE})

FILE(GLOB ProtoFiles "${CMAKE_CURRENT_SOURCE_DIR}/proto/*.proto")

PROTOBUF_GENERATE_PHP(ProtoPHP ${ProtoFiles})
MESSAGE("Generated file: ${ProtoPHP}")
PROTOBUF_GENERATE_CPP(ProtoSources ProtoHeaders ${ProtoFiles})
MESSAGE("Generated file: ${ProtoSources}")

INCLUDE_DIRECTORIES(
    ${GTEST_ROOT}/include
    ${PROTOBUF_INCLUDE_DIR}
    ${CMAKE_CURRENT_BINARY_DIR}
)

FILE(GLOB SRC_TESTS *.cc)

ADD_EXECUTABLE(conformance_test
	${SRC_TESTS}
	${ProtoSources}
)

TARGET_LINK_LIBRARIES(conformance_test
    pthread
    ${GTEST_ROOT}/build/libgtest.a
    ${GTEST_ROOT}/build/libgtest_main.a
    ${PROTOBUF_LIBRARY}
)