///////////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) 2008-2012  Artyom Beilis (Tonkikh) <artyomtnk@yahoo.com>
//
//  See accompanying file COPYING.TXT file for licensing details.
//
///////////////////////////////////////////////////////////////////////////////
#ifndef CPPCMS_IMPL_CACHED_SETTINGS
#define CPPCMS_IMPL_CACHED_SETTINGS
#include <cppcms/json.h>
#include <booster/thread.h>
#include <cppcms/http_cookie.h>
#include <booster/log.h>
namespace cppcms {
namespace impl {
	struct cached_settings {
		struct cached_security {
			long long multipart_form_data_limit;
			long long content_length_limit;
			int file_in_memory_limit;
			std::string uploads_path;
			bool display_error_message;
			std::string email_error_message;

			struct cached_csrf {
				bool enable;
				bool automatic;
				bool exposed;

				cached_csrf(json::value const &v)
				{
					enable = v.get("security.csrf.enable",false);
					automatic = v.get("security.csrf.automatic",true);
					exposed = v.get("security.csrf.exposed",false);
				}
			} csrf;

			cached_security(json::value const &v) :
				csrf(v)
			{
				multipart_form_data_limit = v.get("security.multipart_form_data_limit",64*1024);
				content_length_limit = v.get("security.content_length_limit",1024);
				file_in_memory_limit = v.get("security.file_in_memory_limit",128*1024);
				uploads_path = v.get("security.uploads_path","");
				display_error_message = v.get("security.display_error_message",false);
				email_error_message = v.get("security.email_error_message","");
			}
		} security;
		struct cached_fastcgi {
			int cuncurrency_hint;
			cached_fastcgi(json::value const &v)
			{
				cuncurrency_hint = v.get("fastcgi.cuncurrency_hint",-1);
			}
		} fastcgi;
		struct cached_service {
			std::string ip;
			int port;
			int output_buffer_size;
			int input_buffer_size;
			int async_output_buffer_size;
			bool disable_xpowered_by;
			bool disable_xpowered_by_version;
			bool generate_http_headers;
			int worker_threads;
			int worker_processes;
			cached_service(json::value const &v)
			{
				ip = v.get("service.ip","127.0.0.1");
				port = v.get("service.port",8080);
				output_buffer_size = v.get("service.output_buffer_size",16384);
				input_buffer_size = v.get("service.input_buffer_size",65536);
				async_output_buffer_size = v.get("service.async_output_buffer_size",1024);
				disable_xpowered_by = v.get("service.disable_xpowered_by",false);
				disable_xpowered_by_version = v.get("service.disable_xpowered_by_version",false);
				unsigned cpus = booster::thread::hardware_concurrency();
				if(cpus == 0)
					cpus = 1;
				worker_threads = v.get("service.worker_threads",5 * cpus);
				worker_processes = v.get("service.worker_processes",0);
				generate_http_headers = v.get("service.generate_http_headers",false);
			}
		} service;
		struct cached_localization {
			bool disable_charset_in_content_type;
			cached_localization(json::value const &v) :
				disable_charset_in_content_type(v.get("localization.disable_charset_in_content_type",false))
			{
			}
		} localization;
		struct cached_gzip {
			bool enable;
			int level;
			int buffer;
			cached_gzip(json::value const &v)
			{
				enable=v.get("gzip.enable",true);
				level=v.get("gzip.level",-1);
				buffer=v.get("gzip.buffer",-1);
			}
		} gzip;
		struct cached_http {
			struct cached_proxy {
				bool behind;
				std::vector<std::string> remote_addr_cgi_variables;
			} proxy;
			std::vector<std::string> script_names;
			int timeout;
			cached_http(json::value const &v)
			{
				proxy.behind=v.get("http.proxy.behind",false);
				std::vector<std::string> default_headers;
				default_headers.push_back("X-Forwarded-For");
				std::vector<std::string> remote_addr_headers =
					v.get("http.proxy.remote_addr_headers",default_headers);

				for(size_t i=0;i<remote_addr_headers.size();i++) {
					std::string name = "HTTP_" + remote_addr_headers[i];
					for(unsigned i=0;i<name.size();i++) {
						if(name[i] == '-')
							name[i]='_';
						else if('a' <= name[i] && name[i] <='z')
							name[i]=name[i]-'a' + 'A';
					}
					proxy.remote_addr_cgi_variables.push_back(name);
				}

				script_names = v.get("http.script_names",std::vector<std::string>());
				std::string script = v.get("http.script","");
        /* TODO: need to detect "" vs. missing (nullish) */
				//if(!script.empty())
					script_names.push_back(script);
				timeout = v.get("http.timeout",30);
			}
		} http;
		struct cached_session {
			int timeout;
			std::string expire;
			bool disable_automatic_load;
			struct cached_cookies {
				std::string prefix;
				std::string domain;
				std::string path;
				int time_shift;
				bool use_age;
				bool use_exp;
				bool secure;
				bool remove_unknown_cookies;
			} cookies;
			cached_session(json::value const &v)
			{
				timeout = v.get("session.timeout",24*3600);
				expire = v.get("session.expire","browser");
				disable_automatic_load = v.get("session.disable_automatic_load",false);
				cookies.prefix = v.get("session.cookies.prefix","cppcms_session");
				cookies.domain = v.get("session.cookies.domain","");
				cookies.path = v.get("session.cookies.path","/");
				cookies.time_shift = v.get("session.cookies.time_shift",0);
				std::string method = v.get("session.cookies.expiration_method","both");
				cookies.remove_unknown_cookies = v.get("session.cookies.remove_unknown_cookies",true);

				if(method == "both") {
					cookies.use_age = cookies.use_exp = true;
				}
				else if (method == "expires") {
					cookies.use_age = false;
					cookies.use_exp = true;
				}
				else if(method == "max-age") {
					cookies.use_age = true;
					cookies.use_exp = false;
				}
				else {
					BOOSTER_WARNING("cppcms") << "Invalid session.cookies.expiration_method "
					  "should be one of 'max-age', 'expires' or 'both' assuming default 'both'";
					cookies.use_age = cookies.use_exp = true;
				}
				cookies.secure = v.get("session.cookies.secure",false);
			}
		} session;
		struct cached_misc {
			bool invalid_url_throws;

			cached_misc(json::value const &v)
			{
				invalid_url_throws = v.get("misc.invalid_url_throws",false);
			}

		} misc;
		cached_settings(json::value const &v) :
			security(v),
			fastcgi(v),
			service(v),
			localization(v),
			gzip(v),
			http(v),
			session(v),
			misc(v)
		{
		}

	};
} // impl
} // cppcms
#endif