include(CMakeParseArguments)

find_program(APACHE_HTTPD_COMMAND httpd )
if(APACHE_HTTPD_COMMAND)
  message("found vanilla apache named httpd supposing APACHE_INSTALL_DIR -->${APACHE_INSTALL_DIR}<-")
else()
  if(CMAKE_SYSTEM_NAME MATCHES "Linux")
    find_program(APACHE_HTTPD_COMMAND apache2 )
    if(APACHE_HTTPD_COMMAND)
	message("found apache2 in a debian folder structure")
	get_filename_component(TMP ${APACHE_HTTPD_COMMAND} PATH )
    else()
	message(FATAL_ERROR "unable to find apache on system ${CMAKE_SYSTEM_NAME}")
    endif()
  else()
    message(FATAL_ERROR "unable to handle system ${CMAKE_SYSTEM_NAME}")
  endif()
endif()
if(APACHE_HTTPD_COMMAND)
	execute_process(COMMAND ${APACHE_HTTPD_COMMAND} -v
	  OUTPUT_VARIABLE APACHE_tmpvar
	  OUTPUT_STRIP_TRAILING_WHITESPACE)
	message("apache version---->${APACHE_tmpvar}<---")
	STRING(REGEX REPLACE ".*: Apache/([.0-9]+).*" "\\1" APACHE_VERSION_STRING  "${APACHE_tmpvar}" )
	message("Apache version -->${APACHE_VERSION_STRING}<--")
	get_filename_component(TMP ${APACHE_HTTPD_COMMAND} PATH )
	get_filename_component(APACHE_INSTALL_DIR ${TMP} PATH )
	find_program(APACHE_CTL_COMMAND 
	  apachectl apache2ctl 
	  PATHS ${TMP}
	 )

	find_path(APACHE_MODULES_DIR 
	  NAMES mod_auth_basic.so
	  PATHS ${APACHE_INSTALL_DIR}/modules /usr/lib/apache2/modules/
	  DOC "base apache module directory"
	)
	find_file(APACHE_MIME_TYPES
	  NAMES mime.types
	  PATHS ${APACHE_INSTALL_DIR}/conf /etc
	  DOC "mime type file"
	)
	find_file(APACHE_MIME_MAGIC
	  NAMES magic
	  PATHS ${APACHE_INSTALL_DIR}/conf /etc/apache2
	  DOC "magic mime file"
	)
else()
	message("CMAKE_SYSTEM --> ${CMAKE_SYSTEM}")
	message(FATAL_ERROR "unable to find apache")
endif()

include(FindPackageHandleStandardArgs)
message("Apache_FIND_VERSION---->${Apache_FIND_VERSION}<---")
FIND_PACKAGE_HANDLE_STANDARD_ARGS(
  Apache 
  REQUIRED_VARS_APACHE_HTTPD_COMMAND 
  VERSION_VAR APACHE_VERSION_STRING
)


function(apache_search_module)
  cmake_parse_arguments(APACHE_MSRC "" "NAME;FILENAME" "" ${ARGN} )
  if(NOT APACHE_MSRC_NAME)
    message(FATAL_ERROR "apache_search_module need at least a name")
  else()
    if(NOT APACHE_MSRC_FILENAME)
      set(APACHE_MSRC_FILENAME "mod_${APACHE_MSRC_NAME}.so")
      set(APACHE_MSRC_NAME "${APACHE_MSRC_NAME}_module")
    endif()
    message("searching apache module -->${APACHE_MSRC_NAME}<-->${APACHE_MSRC_FILENAME}<--")
    find_file("APACHE_MODULE_${APACHE_MSRC_NAME}"
	  NAMES ${APACHE_MSRC_FILENAME}
	  PATHS ${APACHE_MODULES_SEARCH_DIRS}
	  DOC "base apache module directory"
    )
    if(NOT APACHE_MODULE_${APACHE_MSRC_NAME})
      message("apache module ${APACHE_MSRC_NAME} NOT FOUND")
    endif()
  endif()
  if(APACHE_MODULE_${APACHE_MSRC_NAME})
    set(APACHE_LOADMODULE_STRING "${APACHE_LOADMODULE_STRING}\nLoadModule ${APACHE_MSRC_NAME} ${APACHE_MODULE_${APACHE_MSRC_NAME}}" PARENT_SCOPE)
  endif()
  
endfunction()