#CMAKE_MINIMUM_REQUIRED(VERSION 2.8.12 FATAL_ERROR)
CMAKE_MINIMUM_REQUIRED(VERSION 3.5 FATAL_ERROR)

MESSAGE(STATUS CMAKE_VERSION = "${CMAKE_VERSION}")

IF(POLICY CMP0003)
   CMAKE_POLICY(SET CMP0003 NEW)
ENDIF(POLICY CMP0003)

IF(POLICY CMP0048)
   CMAKE_POLICY(SET CMP0048 NEW)
ENDIF(POLICY CMP0048)

IF(POLICY CMP0056)
   CMAKE_POLICY(SET CMP0056 NEW)
ENDIF(POLICY CMP0056)

IF(POLICY CMP0066)
  CMAKE_POLICY(SET CMP0066 NEW)
ENDIF(POLICY CMP0066)

IF(POLICY CMP0072)
  CMAKE_POLICY(SET CMP0072 NEW)
ENDIF(POLICY CMP0072)

IF(APPLE)
   SET(CMAKE_CXX_STANDARD 11)
   SET(CMAKE_CXX_STANDARD_REQUIRED True)
ENDIF(APPLE)

IF(NOT ${CMAKE_VERSION} VERSION_LESS "3.0.2")
   # Speed Dreams project
   PROJECT(speed-dreams-2 VERSION 2.4.0)
ELSE(NOT ${CMAKE_VERSION} VERSION_LESS "3.0.2")
   # Speed Dreams project
   PROJECT(speed-dreams-2)

   SET(PROJECT_VERSION_MAJOR 2)
   SET(PROJECT_VERSION_MINOR 4)
   SET(PROJECT_VERSION_PATCH 0)
   SET(PROJECT_VERSION_TWEAK )
   SET(PROJECT_VERSION ${PROJECT_VERSION_MAJOR})

   IF(DEFINED PROJECT_VERSION_MINOR)
      SET(PROJECT_VERSION ${PROJECT_VERSION}.${PROJECT_VERSION_MINOR})
      IF(DEFINED PROJECT_VERSION_PATCH)
         SET(PROJECT_VERSION ${PROJECT_VERSION}.${PROJECT_VERSION_PATCH})
         IF(DEFINED PROJECT_VERSION_TWEAK)
            SET(PROJECT_VERSION ${PROJECT_VERSION}.${PROJECT_VERSION_TWEAK})
         ENDIF(DEFINED PROJECT_VERSION_TWEAK)
      ENDIF(DEFINED PROJECT_VERSION_PATCH)
   ENDIF(DEFINED PROJECT_VERSION_MINOR)
   
   SET(speed-dreams-2_VERSION ${PROJECT_VERSION})
   #MESSAGE(WARNING "CMAKE_VERSION ${CMAKE_VERSION} is deprecated")
ENDIF(NOT ${CMAKE_VERSION} VERSION_LESS "3.0.2")

INCLUDE(cmake/macros.cmake)
INCLUDE(cmake/checks.cmake)

CHECK_HEADERS_H()
CHECK_FUNCTIONS()
CHECK_LIBRARIES()

# Determine version
SET(NEXT_LESSER_VERSION 0) # The next lesser version
MATH(EXPR NEXT_MINOR "${PROJECT_VERSION_MINOR} + 1")
SET(NEXT_MAJOR_MINOR_VERSION "${PROJECT_VERSION_MAJOR}.${NEXT_MINOR}") # Next major.minor version
#MESSAGE(STATUS "NEXT_MAJOR_MINOR_VERSION ${NEXT_MAJOR_MINOR_VERSION}")

# Uncomment if you don't want automatic SVN version detection
# (poor performances under Windows, don't work with git-svn, ...)
# SET(OPTION_AUTOVERSION Off)

IF(NOT OPTION_AUTOVERSION)
	
	SET(VERSION "${NEXT_MAJOR_MINOR_VERSION}-dev")
	SET(VERSION_LONG "${VERSION}")
	
	MESSAGE(STATUS "Version '${VERSION_LONG}' (not auto-detected from SVN source tree)")

ELSE(NOT OPTION_AUTOVERSION)

	# Use SVN HeadURL property on this CMakeLists.txt file in order to automatically get the current version
	SET(HEAD_URL "$HeadURL$")

	# Define regular expressions
	SET(REGEX_TAG        "^\\$HeadURL:.*speed-dreams/code/tags/([^/\\$ ]*).*\\$$")
	SET(REGEX_BUG_BRANCH "^\\$HeadURL:.*speed-dreams/code/branches/([0-9]+\\.[0-9]+)(\\.[xX])?/.*\\$$")
	SET(REGEX_TRUNK      "^\\$HeadURL:.*speed-dreams/code/trunk/.*\\$$")
	SET(REGEX_BRANCH     "^\\$HeadURL:.*speed-dreams/code/branches/([^/\\$ ]*).*\\$$")

	# Check regular expressions
	STRING(REGEX MATCH "${REGEX_TAG}"        VERSION_IS_TAG "${HEAD_URL}")
	STRING(REGEX MATCH "${REGEX_BUG_BRANCH}" VERSION_IS_BUG_BRANCH "${HEAD_URL}")
	STRING(REGEX MATCH "${REGEX_TRUNK}"      VERSION_IS_TRUNK "${HEAD_URL}")
	STRING(REGEX MATCH "${REGEX_BRANCH}"     VERSION_IS_BRANCH "${HEAD_URL}")

	# See if we need to look at the current SVN revision
	SET(NEED_SVN_REV TRUE)
	IF(VERSION_IS_TAG)
		STRING(REGEX REPLACE "${REGEX_TAG}" "\\1" VERSION "${HEAD_URL}")
	ELSEIF(VERSION_IS_BUG_BRANCH)
		STRING(REGEX REPLACE "${REGEX_BUG_BRANCH}" "\\1" TMP_VERSION "${HEAD_URL}")
		SET(VERSION "${TMP_VERSION}.${NEXT_LESSER_VERSION}-dev")
	ELSEIF(VERSION_IS_TRUNK)
		SET(VERSION "${NEXT_MAJOR_MINOR_VERSION}-trunk")
	ELSEIF(VERSION_IS_BRANCH)
		STRING(REGEX REPLACE "${REGEX_BRANCH}" "\\1" VERSION "${HEAD_URL}")
	ELSE(VERSION_IS_TAG)
		MESSAGE("Warning: Could not determine version name from HeadURL ${HEAD_URL}")
		SET(VERSION "${NEXT_MAJOR_MINOR_VERSION}-dev")
		SET(NEED_SVN_REV FALSE)
	ENDIF(VERSION_IS_TAG)
	
	# Try to get current SVN revision
	IF(NEED_SVN_REV)
		SET(SVN_FIND_REV_FAILED FALSE)
		FIND_PROGRAM(SVNVERSION_EXEC svnversion PATHS /usr/local/bin /usr/bin)
		MARK_AS_ADVANCED(SVNVERSION_EXEC)
		IF(NOT SVNVERSION_EXEC)
			SET(SVN_FIND_REV_FAILED TRUE)
		ENDIF(NOT SVNVERSION_EXEC)
		IF(NOT SVN_FIND_REV_FAILED)
			MESSAGE(STATUS "Looking for current subversion revision (may be long) ...")
			EXECUTE_PROCESS(COMMAND ${SVNVERSION_EXEC} ${CMAKE_CURRENT_SOURCE_DIR} --no-newline
							RESULT_VARIABLE SVNVERSION_RESULT
							OUTPUT_VARIABLE SVN_REV_LONG)
			IF(NOT ${SVNVERSION_RESULT} EQUAL 0)
				SET(SVN_FIND_REV_FAILED TRUE)
			ENDIF(NOT ${SVNVERSION_RESULT} EQUAL 0)
		ENDIF(NOT SVN_FIND_REV_FAILED)
		IF(NOT SVN_FIND_REV_FAILED)
			IF("${SVN_REV_LONG}" MATCHES ":")
				STRING(REGEX REPLACE "^[^:]*:(.*)$" "\\1" SVN_REV "${SVN_REV_LONG}")
			ELSE("${SVN_REV_LONG}" MATCHES ":")
				SET(SVN_REV "${SVN_REV_LONG}")
			ENDIF("${SVN_REV_LONG}" MATCHES ":")
			IF(NOT SVN_REV)
				SET(SVN_FIND_REV_FAILED TRUE)
			ENDIF(NOT SVN_REV)
		ENDIF(NOT SVN_FIND_REV_FAILED)
		SET(VERSION_LONG "${VERSION}")
		IF(NOT SVN_FIND_REV_FAILED)
			STRING(TOLOWER ${SVN_REV} SVN_REV)
			SET(VERSION_LONG "${VERSION_LONG}-r${SVN_REV}")
		ENDIF(NOT SVN_FIND_REV_FAILED)
	ELSE(NEED_SVN_REV)
		SET(VERSION_LONG "${VERSION}")
	ENDIF(NEED_SVN_REV)

	MESSAGE(STATUS "Version '${VERSION_LONG}'")

ENDIF(NOT OPTION_AUTOVERSION)

# SVN_REV is used by packagers, so set it to something
# in case it couldn't be retrieved or OPTION_AUTOVERSION is FALSE
IF(NOT SVN_REV)
	SET(SVN_REV "XXXX")
ENDIF(NOT SVN_REV)

# PROJECT_VERSION_METADATA is used by NSIS packagers
# its what comes after the '-' sign (if anything)
# ie: in tag '2.2.2-rc1' PROJECT_VERSION_METADATA should be '-rc1'
STRING(FIND "${VERSION}" "-" _METADATA_INDEX)
IF(NOT ${_METADATA_INDEX} EQUAL -1)
   STRING(SUBSTRING ${VERSION} ${_METADATA_INDEX} -1 PROJECT_VERSION_METADATA)
ELSE(NOT ${_METADATA_INDEX} EQUAL -1)
   SET(PROJECT_VERSION_METADATA )
ENDIF(NOT ${_METADATA_INDEX} EQUAL -1)
#MESSAGE(STATUS "PROJECT_VERSION_METADATA ${PROJECT_VERSION_METADATA}")

# Generate config.h
CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/cmake/config.h.in.cmake
               ${CMAKE_CURRENT_BINARY_DIR}/config.h)

# Generate DOxygen configuration file
CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/cmake/doxygenconfig.in.cmake
               ${CMAKE_CURRENT_BINARY_DIR}/doxygen_config @ONLY)


# Fictive = no-output target, for having source files available in IDEs.
SET(_SOURCES CHANGES.txt COPYING.txt INSTALL.txt README.txt)
ADD_CUSTOM_TARGET(rootdoc SOURCES ${_SOURCES} data/data/credits.xml)

# Install top tree data files
SD_INSTALL_FILES(DATA "/"  FILES ${_SOURCES})

# Initialize user settings file management (before any of them is collected).
SD_SETUP_SETTINGS_VERSION()

# Setup empty GLOBAL lists for robots and modules
SET_PROPERTY(GLOBAL PROPERTY SD_MODULE_LIST "")
SET_PROPERTY(GLOBAL PROPERTY SD_CAR_LIST "")
SET_PROPERTY(GLOBAL PROPERTY SD_TRACK_LIST "")
SET_PROPERTY(GLOBAL PROPERTY SD_ROBOT_LIST "")
SET_PROPERTY(GLOBAL PROPERTY SD_OSG_PLUGIN_LIST "")
SET_PROPERTY(GLOBAL PROPERTY SD_EXE_LIST "")

# Sub-dirs to build ...
ADD_SUBDIRECTORY(src)
ADD_SUBDIRECTORY(data)
ADD_SUBDIRECTORY(cmake)

# After the user settings files have been collected,
# Update (and then install) version.xml from their respective version.
SD_UPDATE_SETTINGS_VERSION()

IF(MSVC)
   INSTALL(FILES ${CMAKE_CURRENT_SOURCE_DIR}/doc/faq/faq.html DESTINATION ./doc)
   INSTALL(FILES ${CMAKE_CURRENT_SOURCE_DIR}/doc/userman/how_to_drive.html DESTINATION ./doc)
   INSTALL(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/doc/userman/images/ DESTINATION ./doc/images/)
ENDIF(MSVC)


# Useful for using an installation of SD as a robot development framework without building it.
# Only do for an in source tree build as INSTALL_SD_CMAKE() doesn't seem to use CMAKE_INSTALL_PREFIX
IF("${PROJECT_SOURCE_DIR}" STREQUAL "${PROJECT_BINARY_DIR}")
   INSTALL_SD_CMAKE()
ENDIF("${PROJECT_SOURCE_DIR}" STREQUAL "${PROJECT_BINARY_DIR}")

# Must be the last ADD_SUBDIRECTORY for FIXUP_BUNDLE to work
ADD_SUBDIRECTORY(packaging)

# Generate a 'make clobber'-like clobber.sh/.bat script in case of an in-source build.
IF("${PROJECT_SOURCE_DIR}" STREQUAL "${PROJECT_BINARY_DIR}")
	SD_GENERATE_CLOBBER_SCRIPT()
ENDIF("${PROJECT_SOURCE_DIR}" STREQUAL "${PROJECT_BINARY_DIR}")

# Add an unistall target.
CONFIGURE_FILE("${CMAKE_CURRENT_SOURCE_DIR}/cmake/uninstall.cmake" 
               "${CMAKE_CURRENT_BINARY_DIR}/uninstall.cmake" IMMEDIATE @ONLY)
IF(MSVC)
	SET(_UNINST_TGT_NAME "UNINSTALL")
ELSE(MSVC)
	SET(_UNINST_TGT_NAME "uninstall")
ENDIF(MSVC)
ADD_CUSTOM_TARGET(${_UNINST_TGT_NAME} "${CMAKE_COMMAND}" -P "${CMAKE_CURRENT_BINARY_DIR}/uninstall.cmake" )

IF(OPTION_CHECK_CONTENTS)
   INCLUDE(cmake/prerelease.cmake)
ENDIF(OPTION_CHECK_CONTENTS)

IF(OPTION_PACKAGING OR OPTION_ALL_IN_ONE_PACKAGING)
   INCLUDE(cmake/packagemaker.cmake)
ENDIF(OPTION_PACKAGING OR OPTION_ALL_IN_ONE_PACKAGING)
IF(OPTION_PACKAGING)
   IF(MSVC)
      INCLUDE(cmake/packagemaker-nsis.cmake)
   ENDIF(MSVC)
   IF(APPLE)
      INCLUDE(cmake/packagemaker-dmg.cmake)
   ENDIF(APPLE)
ENDIF(OPTION_PACKAGING)

IF(OPTION_ALL_IN_ONE_PACKAGING)
   IF(MSVC AND ${CMAKE_VERSION} VERSION_LESS "3.17")
      MESSAGE(SEND_ERROR "OPTION_ALL_IN_ONE_PACKAGING requires CMake 3.17 or greater on Windows")
   ENDIF(MSVC AND ${CMAKE_VERSION} VERSION_LESS "3.17")
   INCLUDE(CPack)
ENDIF(OPTION_ALL_IN_ONE_PACKAGING)

IF(OPTION_PORTABLE_PACKAGING)
   IF(NOT ${CMAKE_VERSION} VERSION_LESS "3.0")
         #[[
         This section adds a batch file for running speed-dreams-2.exe with a local settings directory.
         This is similar to how 'Portable Apps' work.
         It also adds projects to build a self-extracting 7-zip file (if 7-zip is installed)
      ]]
   ENDIF(NOT ${CMAKE_VERSION} VERSION_LESS "3.0")
   IF(WIN32)

      find_program(7ZIP_EXE 7z.exe PATH_SUFFIXES 7-Zip)
      find_file(7ZIP_WIN 7z.sfx PATH_SUFFIXES 7-Zip)

      set(SD_EXE_NAME "speed-dreams-2.exe")
      SET(PORTABLE_PACKAGE_FILE_NAME "speed-dreams-2-r${SVN_REV}-portable-setup" CACHE STRING "Name for portable package file")
      SET(PORTABLE_BATCH_FILE_NAME "speed-dreams-2-r${SVN_REV}-portable.bat" CACHE STRING "Name for portable batch file")

            CONFIGURE_FILE("${CMAKE_CURRENT_SOURCE_DIR}/packaging/portable/sd-portable.bat.in" 
                  "${CMAKE_BINARY_DIR}/${PORTABLE_BATCH_FILE_NAME}" @ONLY)
         
      INSTALL(PROGRAMS "${CMAKE_BINARY_DIR}/${PORTABLE_BATCH_FILE_NAME}" DESTINATION .)

      # NOTE this WILL pick up changes and additions!
      # just re-build INSTALL no need to rerun CMake configure!
      INSTALL(DIRECTORY packaging/portable/settings DESTINATION . )

      if(7ZIP_EXE AND 7ZIP_WIN)

         ADD_CUSTOM_TARGET(PORTABLE_INSTALL)
         ADD_CUSTOM_TARGET(PORTABLE_PACKAGE DEPENDS PORTABLE_INSTALL)

         ADD_CUSTOM_COMMAND(TARGET PORTABLE_INSTALL
                     COMMAND "${CMAKE_COMMAND}" --build . --target INSTALL --config $<CONFIG>
                     WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
                     COMMENT "Building INSTALL...")

         ADD_CUSTOM_COMMAND(TARGET PORTABLE_PACKAGE
                        COMMAND ${7ZIP_EXE} a -sfx7z.sfx ${CMAKE_BINARY_DIR}/${PORTABLE_PACKAGE_FILE_NAME} *
                        WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_PREFIX}
                        COMMENT "Building portable package...")

      else(7ZIP_EXE AND 7ZIP_WIN)
            message(STATUS "Could not find 7-ZIP. Portable build disabled.")
      endif(7ZIP_EXE AND 7ZIP_WIN)
   ENDIF(WIN32)
ENDIF(OPTION_PORTABLE_PACKAGING)