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# get_basic_ids()
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#

subroutine(get_basic_ids(
	node profile,
	string current_language), (

	# Returns a node which contains all the basic IDs (or checksums)
	# which are required to check up to date state of cached objects.
	# This node is typically created upon the initial report request.
	# The generated ID's are then used throughout the report generation
	# process.
	
	debug_message("#### get_basic_ids() START \n");
		
	delete_node("v.basic_ids");
	
	string lang_stats_pathname = LOGANALYSISINFO_DIRECTORY . "language/" . current_language . "/lang_stats.cfg";

	# 2009-03-17 - GMF - If the current_language doesn't exist, use preferences.miscellaneous.language
	# 2009-12-28 - KHP - Disabled due the way we get the current_language but this would also violate the caching parameters. If 
	# the current_language as provided doesn't exist then the system should actually throw an error.
	# if (!file_exists(lang_stats_pathname)) then (
	#	debug_message("#### WARNING - reguar lang_stats_pathname does not exist! \n");
	#	lang_stats_pathname = LOGANALYSISINFO_DIRECTORY . "language" . internal.directory_divider . preferences.miscellaneous.language . internal.directory_divider . "lang_stats.cfg";
    # );
    
    debug_message("#### current_language: " . current_language . "\n");
    debug_message("#### lang_stats_pathname: " . lang_stats_pathname . "\n");
	
	# For the lang_stats_checksum we use the file modification_time and size and not the node as base because getting
	# the checksum from the node would be a too expensive operation.
	delete_node("v.lang_stats_file_info");
	get_file_info(lang_stats_pathname, "v.lang_stats_file_info");
	# debug_message("\n" . node_as_string("v.lang_stats_file_info") . "\n");
	string lang_stats_checksum = current_language . @("v.lang_stats_file_info.modification_time") . @("v.lang_stats_file_info.size");
	
	string graph_colors_checksum = md5_digest(node_as_string("graph_colors"));
	
	string log_fields_checksum = md5_digest(node_as_string(profile . ".log.fields"));
	string database_fields_checksum = md5_digest(node_as_string(profile . ".database.fields"));
	string report_fields_checksum = md5_digest(node_as_string(profile . ".statistics.report_fields"));
	string reports_menu_checksum = md5_digest(node_as_string(profile . ".statistics.reports_menu"));
	
	string extended_profile_dat_id = log_fields_checksum . database_fields_checksum . report_fields_checksum . graph_colors_checksum;
	
	# KHP 15/Jan/2010 - log.field_options is no longer available
	# extended_profile_dat_id .= @(profile . ".log.field_options.sessions_page_field");
	
	extended_profile_dat_id = md5_digest(extended_profile_dat_id);
	
	"v.basic_ids.product_build_id" = @("version.log_analysis_info_version");
	"v.basic_ids.lang_stats_checksum" = lang_stats_checksum;
	"v.basic_ids.graph_colors_checksum" = graph_colors_checksum;
	 
	"v.basic_ids.log_fields_checksum" = log_fields_checksum;
	"v.basic_ids.database_fields_checksum" = database_fields_checksum;
	"v.basic_ids.report_fields_checksum" = report_fields_checksum;
	"v.basic_ids.reports_menu_checksum" = reports_menu_checksum;
	
	"v.basic_ids.extended_profile_dat_id" = extended_profile_dat_id;
	
	debug_message("\n" . node_as_string("v.basic_ids") . "\n");
	
	# Return basic_ids node
	
	"v.basic_ids";
));