/*
 * This file is a part of CMSLU -- Content Management System like Unix
 * and is not publicly distributed
 * 
 * Copyright (c) 2008, Tomasz Sowa
 * All rights reserved.
 * 
 */
 
#ifndef headerfilerequest
#define headerfilerequest

#include <fcgiapp.h>
#include <sstream>
#include <vector>
#include "requesttypes.h"
#include "log.h"
#include "session.h"

#include "getparser.h"
#include "postparser.h"
#include "cookieparser.h"
#include "item.h"
#include "error.h"


struct Request
{
    FCGX_Stream * in,  * out, * err;
    FCGX_ParamArray env; // defined as 'char **'


	enum Method { get, post, none } method;


	// headers, page and debug
	std::ostringstream headers, page, debug;

	
	GetTable    get_table;
	PostTable   post_table;
	CookieTable cookie_table;
	
	// environment variables
	// they are not null -- when the server doesn't have such a variable it will be pointing into 'char_empty' which is default '\0'
	const char * env_request_method;
	const char * env_request_uri;
	const char * env_http_cookie;
	const char * env_remote_addr;
	const char * env_http_host;

	// current session
	// is set after calling session_manager.SetSession()
	Session * session;

	
	// 'done_status' is set if 'done' is different than 'nothing'
	Error done_status;

	// what to do
	enum Result { err_internal, err404, err_per_denied, show_dir, show_item, show_item_by_id, add_item, edit_item, del_item, del_item_confirm, confirm, redirect, logout } result; // zamienic na to_do

	
	

	// current directory e.g.  /foo/bar
	std::vector<Item> cur_dir_table;
	
	// id of the last directory (bar) or -1
	long dir;

	// items in the current directory
	// maybe without contents?
	std::vector<Item> item_table;
	
	// directories in the current directory
	std::vector<Item> dir_table;

	// this item is used for many purposes such as editing, adding an item etc.
	Item item;

	// this string is used for many purposes such as redirecting
	std::string str;

	// for debugging
	void PrintGetTable();
	void PrintEnv();
	void PrintIn();
		
	Request();
	void Clear();


	void SetCookie(const char * name, const char * value);
	void SetCookie(const char * name, long value);

	bool IsPostVar(const char * var);
	std::string & PostVar(const char * var);  // with a throw


	// item_table[0] -> item
	void CopyFirstItem();


	void ReadEnvVariables();
	void CheckMethod();
	void ReadParameters();
	void Read();
	void SendAll();
	
	
	bool CanChangeUser(const Item & item, long new_user_id);
	bool CanChangeGroup(const Item & item, long new_group_id);
	bool CanChangePrivileges(const Item & item, int new_priv);
	
	bool HasAccess(const Item & item, int mask);
	bool HasReadAccess(const Item & item);
	bool HasWriteAccess(const Item & item);
	bool HasReadWriteAccess(const Item & item);
	bool HasReadExecAccess(const Item & item);
		
	
private:
	// used to set some env_* variables into it, when the server didn't set that variable
	// it contains '\0'
	const char char_empty;
	
	const char * SetEnvVar(const char * var);
};



extern Request request;



#endif