EflGetModules

include_guard(DIRECTORY)
include(FetchContent)

macro(__efl_propagate __var)
  set(${__var} ${${__var}} PARENT_SCOPE)
endmacro()

function(__efl_find_perl)
  if(DEFINED PERL_VERSION AND DEFINED PERL_EXECUTABLE)
    return()
  endif()
  find_package(Perl REQUIRED)
  set(PERL_VERSION ${PERL_VERSION_STRING})
  __efl_assert_propagate(PERL_VERSION)
  __efl_assert_propagate(PERL_EXECUTABLE)
endfunction()

##=== Locate Implementation =================================##

macro(Efl_Getmodules)
  __efl_set_install_prefix()
  foreach(__tgt ${ARGN})
    if(TARGET ${__tgt})
      continue()
    endif()
    __efl_parse_target(${__tgt})
    __efl_get_target(${__tgt})
    message("[efl::core] Found ${__tgt}")
  endforeach()
endmacro()

macro(__efl_set_install_prefix)
  if(NOT DEFINED EFL_INSTALL_PREFIX)
    if(WIN32)
      set(EFL_INSTALL_PREFIX "C:/Eightforge")
    else()
      set(EFL_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}/Eightforge")
    endif()
  endif()
endmacro()

macro(__efl_parse_target __tgt)
  string(REGEX REPLACE "::" "-" __EFL_TGT_NAME "${__tgt}")
  if(__EFL_TGT_NAME MATCHES "(([_a-zA-Z-]+)-([_a-zA-Z-]+))$")
    set(__EFL_TGT_DIR "${CMAKE_MATCH_2}/${CMAKE_MATCH_3}")
  else()
    set(__EFL_TGT_DIR "${__EFL_TGT_NAME}")
  endif()
  set(__EFL_TGT_URL "https://github.com/eightforge/${__EFL_TGT_NAME}.git")
endmacro()

macro(__efl_get_target __tgt)
  set(__EFL_TGT_CURR "${__EFL_TGT_NAME}-tgt")
  set(__EFL_TGT_SRC "${EFL_INSTALL_PREFIX}/${__EFL_TGT_DIR}")

  if(NOT ${__EFL_TGT_CURR}_ADDED OR EFL_FORCE_FETCH)
    FetchContent_Declare(${__EFL_TGT_CURR}
      GIT_REPOSITORY ${__EFL_TGT_URL}
      GIT_TAG main
      SOURCE_DIR ${__EFL_TGT_SRC}
    )

    FetchContent_GetProperties(${__EFL_TGT_CURR}
      SOURCE_DIR ${__EFL_TGT_CURR}_SOURCE_DIR
      BINARY_DIR ${__EFL_TGT_CURR}_BINARY_DIR
    )

    if(NOT ${__EFL_TGT_CURR}_POPULATED)
      FetchContent_Populate(${__EFL_TGT_CURR})
      set(${__EFL_TGT_CURR}_BINARY_DIR ${${__EFL_TGT_CURR}_BINARY_DIR}
        CACHE FILEPATH "" FORCE)
    endif()
  endif()

  add_subdirectory(${__EFL_TGT_SRC} ${__EFL_TGT_CURR}_BINARY_DIR)
  set(${__EFL_TGT_CURR}_ADDED ON 
    CACHE BOOL "If the target has already been added.")
endmacro()