#ifndef __SCN2K_CMD_H__
#define __SCN2K_CMD_H__

#include <vector>
#include <string>
#include <map>

#include "scn2k_flags.h"

#define STRHEAP_SIZE 10000
enum Cmdtype {
	CMD_NOP, CMD_FLAGS, CMD_JMP, CMD_TEXT, CMD_OTHER, CMD_SYSVAR,
	CMD_TEXTEND,
	CMD_SAVECMDGRP, CMD_SAVECMDGRP_START, CMD_SAVECMDGRP_ONCE, CMD_SAVECMD_ONCE, CMD_WAITFRAMEUPDATE,CMD_SAVEPOINT, CMD_ROLLBACKPOINT,
	CMD_SAVEREQ, CMD_SAVE,
	CMD_LOADREQ, CMD_LOAD,
	CMD_MENUREQ,
	CMD_BACKLOGREQ, CMD_BACKLOGREQ_FWD,
	CMD_END};

enum SkipMode {
	SKIP_NO=0, SKIP_TEXT=1, SKIP_GRP_FAST=16, SKIP_GRP_NOEFFEC=32,
	SKIP_GRP_NODRAW=64, SKIPEND_TEXT=256, SKIPEND_KEY=512, SKIP_IN_MENU=1024
};

struct CmdSimplified { // Cmd 保存用
	int type, cmd1, cmd2, cmd3, cmd4, argc;
	char* args;
	void Save(std::string& save);
	void Load(const char* save, char*& args_buffer);
	void copy(const CmdSimplified& from, char*& args_buffer);
};

class SimpleCmd {
	public:
		SimpleCmd(int a, int b, int c);
		SimpleCmd();

		bool operator==(const SimpleCmd& cmd) const;
		bool operator<(const SimpleCmd& cmd) const;

	public:
		int cmd1, cmd2, cmd3;
};

class Cmd : public SimpleCmd{
	public:
		Cmdtype cmd_type;
		int cmd4;
		int argc;
		int pos, scn;
		const char* rawdata;
		char cmdstr[1024];
		std::vector<VarInfo> args;

	private:
		const Flags& flags;
		bool errorflag;
		int system_version;

		int GetArgs(const char*& d);
		int GetArgsSpecial(int normal_args,const char*& d);
		void GetSelection(const char*& d);
		int GetSwitch(const char*& d);
		int GetSimpleSwitch(const char*& d);
		int GetExpression(const char*& d, struct VarInfo* info = 0);
		int GetExpressionCond(const char*& d);
		int GetLeftToken(const char*& d, struct VarInfo& info);
		int GetString(const char*& d);
		int CopyString(const char* d);
		int StrVar(int type, int number);
		static char strtype[256];
		static int StrType(const char* d) { return strtype[*(unsigned const char*)d];}

	public:
		const char* Str(const VarInfo& info) const;
		int AddStr(char* s);

	private:
		char strheap[STRHEAP_SIZE];
		int strend;
		void SetError(void) { errorflag = true;}
		void ResetString(void) {
			strend = 0;
		}

	public:
		void GetCmd(Flags& f, const char*& d);
		void SetSysvar(int n, int v);
		void SetSysvar(int v) { SetSysvar(TYPE_SYS_SYS, v); }
		void SetFlagvar(VarInfo info, int v);
		void SetStrvar(VarInfo info, const std::string& s);
		bool IsError() { return errorflag;}
		void clear(void);
		virtual const char * CmdDescr(int, int, int, int) { return "Not supported"; }
		Cmd(const Flags& f, int _sys_ver);
		void read(const CmdSimplified& cmd);
		void write(CmdSimplified& cmd, char*& args_buffer) const;
};

class CommandHandler {
	public:
		typedef void (CommandHandler::*CmdImpl)(Cmd& cmd);
		typedef struct {
			const char* descr;
			CmdImpl function;
		} CommandInfo;
		void RegisterCommand(int cmd1, int cmd2, int cmd3, const char* descr, CmdImpl func);
		bool Exec(Cmd& cmd);
		void PrintCmd(Cmd& cmd);

	private:
		typedef std::map<SimpleCmd, CommandInfo> CommandMap;
		CommandMap command_map;
};

#endif