// Copyright (c) Hercules Dev Team, licensed under GNU GPL.
// See the LICENSE file
// Portions Copyright (c) Athena Dev Teams

#ifndef LOGIN_ACCOUNT_H
#define LOGIN_ACCOUNT_H

#include "common/cbasetypes.h"
#include "common/mmo.h" // ACCOUNT_REG2_NUM
#include "common/sql.h" // Sql

typedef struct AccountDB AccountDB;
typedef struct AccountDBIterator AccountDBIterator;


#ifdef HERCULES_CORE
// standard engines
AccountDB* account_db_sql(void);
#endif // HERCULES_CORE

struct mmo_account
{
	int account_id;
	char userid[NAME_LENGTH];
	char pass[32+1];            // 23+1 for plaintext, 32+1 for md5-ed passwords
	char sex;                   // gender (M/F/S)
	char email[40];             // e-mail (by default: a@a.com)
	int group_id;               // player group id
	uint8 char_slots;           // this accounts maximum character slots (maximum is limited to MAX_CHARS define in char server)
	unsigned int state;         // packet 0x006a value + 1 (0: complete OK)
	time_t unban_time;          // (timestamp): ban time limit of the account (0 = no ban)
	time_t expiration_time;     // (timestamp): validity limit of the account (0 = unlimited)
	unsigned int logincount;    // number of successful auth attempts
	unsigned int pincode_change;// (timestamp): last time of pincode change
	char pincode[4+1];          // pincode value
	char lastlogin[24];         // date+time of last successful login
	char last_ip[16];           // save of last IP of connection
	char birthdate[10+1];       // assigned birth date (format: YYYY-MM-DD, default: 0000-00-00)
};


struct AccountDBIterator
{
	/// Destroys this iterator, releasing all allocated memory (including itself).
	///
	/// @param self Iterator
	void (*destroy)(AccountDBIterator* self);

	/// Fetches the next account in the database.
	/// Fills acc with the account data.
	/// @param self Iterator
	/// @param acc Account data
	/// @return true if successful
	bool (*next)(AccountDBIterator* self, struct mmo_account* acc);
};

struct Account_engine {
	AccountDB* (*constructor)(void);
	AccountDB* db;
};

struct AccountDB
{
	/// Initializes this database, making it ready for use.
	/// Call this after setting the properties.
	///
	/// @param self Database
	/// @return true if successful
	bool (*init)(AccountDB* self);

	/// Destroys this database, releasing all allocated memory (including itself).
	///
	/// @param self Database
	void (*destroy)(AccountDB* self);

	/// Gets a property from this database.
	/// These read-only properties must be implemented:
	/// "engine.name" -> "txt", "sql", ...
	/// "engine.version" -> internal version
	/// "engine.comment" -> anything (suggestion: description or specs of the engine)
	///
	/// @param self Database
	/// @param key Property name
	/// @param buf Buffer for the value
	/// @param buflen Buffer length
	/// @return true if successful
	bool (*get_property)(AccountDB* self, const char* key, char* buf, size_t buflen);

	/// Sets a property in this database.
	///
	/// @param self Database
	/// @param key Property name
	/// @param value Property value
	/// @return true if successful
	bool (*set_property)(AccountDB* self, const char* key, const char* value);

	/// Creates a new account in this database.
	/// If acc->account_id is not -1, the provided value will be used.
	/// Otherwise the account_id will be auto-generated and written to acc->account_id.
	///
	/// @param self Database
	/// @param acc Account data
	/// @return true if successful
	bool (*create)(AccountDB* self, struct mmo_account* acc);

	/// Removes an account from this database.
	///
	/// @param self Database
	/// @param account_id Account id
	/// @return true if successful
	bool (*remove)(AccountDB* self, const int account_id);

	/// Modifies the data of an existing account.
	/// Uses acc->account_id to identify the account.
	///
	/// @param self Database
	/// @param acc Account data
	/// @return true if successful
	bool (*save)(AccountDB* self, const struct mmo_account* acc);

	/// Finds an account with account_id and copies it to acc.
	///
	/// @param self Database
	/// @param acc Pointer that receives the account data
	/// @param account_id Target account id
	/// @return true if successful
	bool (*load_num)(AccountDB* self, struct mmo_account* acc, const int account_id);

	/// Finds an account with userid and copies it to acc.
	///
	/// @param self Database
	/// @param acc Pointer that receives the account data
	/// @param userid Target username
	/// @return true if successful
	bool (*load_str)(AccountDB* self, struct mmo_account* acc, const char* userid);

	/// Returns a new forward iterator.
	///
	/// @param self Database
	/// @return Iterator
	AccountDBIterator* (*iterator)(AccountDB* self);
};

#ifdef HERCULES_CORE
Sql *account_db_sql_up(AccountDB* self);

void mmo_send_accreg2(AccountDB* self, int fd, int account_id, int char_id);
void mmo_save_accreg2(AccountDB* self, int fd, int account_id, int char_id);
#endif // HERCULES_CORE

#endif /* LOGIN_ACCOUNT_H */