package main

import (
	"strconv"
	"time"
)

var (
	cacheObjCastle map[string]ChatWarsCastle
	cacheObjGuild  map[string]ChatWarsGuild
	cacheObjUser   map[string]ChatWarsUser
)

func getObjTypeId(objId int64) (int64, error) {
	var objTypeId int64

	stmt, err := db.Prepare(`SELECT o.obj_type_id FROM obj o WHERE o.id = ?`)
	if err != nil {
		return 0, err
	}
	defer stmt.Close()

	err = stmt.QueryRow(objId).Scan(&objTypeId)
	if err != nil {
		return 0, err
	}

	return objTypeId, nil
}

func getObjSubTypeId(objId int64) (int64, error) {
	var objSubTypeId int64

	stmt, err := db.Prepare(`SELECT o.obj_sub_type_id FROM obj o WHERE o.id = ?`)
	if err != nil {
		return 0, err
	}
	defer stmt.Close()

	err = stmt.QueryRow(objId).Scan(&objSubTypeId)
	if err != nil {
		return 0, err
	}

	return objSubTypeId, nil
}

func setObjSubTypeId(objId int64, objSubTypeID64 int64) error {
	stmt, err := db.Prepare(`UPDATE obj o SET o.obj_sub_type_id = ? WHERE o.id = ?;`)
	logOnError(err, "setObjSubTypeId : prepare update")
	if err != nil {
		return err
	}
	defer stmt.Close()

	_, err = stmt.Exec(objSubTypeID64, objId)
	logOnError(err, "setObjSubTypeId : exec update")
	return err
}

func addObjMsg(msgID64 int64, msgChatID64 int64, msgUserID64 int64, msgSenderUserID64 int64, msgDate time.Time, msgText string) (int64, error) {
	tx, err := db.Begin()
	logOnError(err, "addObjMsg : start transaction")
	if err != nil {
		return 0, err
	}

	res, err := tx.Exec(`INSERT INTO obj (obj_type_id, obj_sub_type_id)
						          VALUES (` + strconv.Itoa(objTypeMessage) + `,` + strconv.Itoa(objSubTypeMessageUnknown) + `);`)
	logOnError(err, "addObjMsg : exec insert obj")
	if err != nil {
		err2 := tx.Rollback()
		logOnError(err2, "addObjMsg : rollback insert obj")
		return 0, err
	}

	objId, err := res.LastInsertId()
	if err != nil {
		err2 := tx.Rollback()
		logOnError(err2, "addObjMsg : rollback get lastInsertId")
		return 0, err
	}

	stmt, err := tx.Prepare(`INSERT INTO obj_msg	(obj_id, msg_id, chat_id, user_id, sender_user_id, date, text)
							 VALUES 				(?,      ?,      ?,       ?,       ?,              ?,    ?);`)
	logOnError(err, "addObjMsg : prepare insert obj_msg")
	if err != nil {
		err2 := tx.Rollback()
		logOnError(err2, "addObjMsg : rollback prepare insert obj_msg")
		return 0, err
	}
	defer stmt.Close()

	_, err = stmt.Exec(objId, msgID64, msgChatID64, msgUserID64, msgSenderUserID64, msgDate, msgText)
	logOnError(err, "addObjMsg : exec insert obj_msg")
	if err != nil {
		err2 := tx.Rollback()
		logOnError(err2, "addObjMsg : rollback exec insert obj")
		return 0, err
	}

	err = tx.Commit()
	logOnError(err, "addObjMsg : commit")
	if err != nil {
		return 0, err
	}
	return objId, nil
}

func addObjCastle(logo string, name string) (int64, error) {
	tx, err := db.Begin()
	logOnError(err, "addObjCastle : start transaction")
	if err != nil {
		return 0, err
	}

	res, err := tx.Exec(`INSERT INTO obj (obj_type_id, obj_sub_type_id)
						          VALUES (` + strconv.Itoa(objTypeCastle) + `,` + strconv.Itoa(objSubTypeCastle) + `);`)
	logOnError(err, "addObjCastle : exec insert obj")
	if err != nil {
		err2 := tx.Rollback()
		logOnError(err2, "addObjCastle : rollback insert obj")
		return 0, err
	}

	objId, err := res.LastInsertId()
	if err != nil {
		err2 := tx.Rollback()
		logOnError(err2, "addObjCastle : rollback get lastInsertId")
		return 0, err
	}

	stmt, err := tx.Prepare(`INSERT INTO obj_castle	(obj_id, logo, name)
							 VALUES 				(?,      ?,       ?);`)
	logOnError(err, "addObjCastle : prepare insert obj_castle")
	if err != nil {
		err2 := tx.Rollback()
		logOnError(err2, "addObjCastle : rollback prepare insert obj_castle")
		return 0, err
	}
	defer stmt.Close()

	_, err = stmt.Exec(objId, logo, name)
	logOnError(err, "addObjCastle : exec insert obj_castle")
	if err != nil {
		err2 := tx.Rollback()
		logOnError(err2, "addObjCastle : rollback exec insert obj")
		return 0, err
	}

	err = tx.Commit()
	logOnError(err, "addObjCastle : commit")
	if err != nil {
		return 0, err
	}
	return objId, nil
}

func getObjCastleID(s string) int64 {
	return cacheObjCastle[s].ObjID64
}

func loadObjCastle() error {
	var (
		id   int64
		logo string
		name string
	)

	cacheObjCastle = make(map[string]ChatWarsCastle)

	castles, err := db.Query(`SELECT oc.obj_id, oc.logo, oc.name FROM obj_castle oc;`)
	if err != nil {
		return err
	}
	defer castles.Close()

	for castles.Next() {
		err = castles.Scan(&id, &logo, &name)
		if err != nil {
			return err
		}
		c := new(ChatWarsCastle)
		c.ObjID64 = id
		c.Logo = logo
		c.Name = name
		cacheObjCastle[logo] = *c
		cacheObjCastle[name] = *c
	}

	return nil
}

func addObjGuild(tag string, name string) (int64, error) {
	tx, err := db.Begin()
	logOnError(err, "addObjGuild : start transaction")
	if err != nil {
		return 0, err
	}

	res, err := tx.Exec(`INSERT INTO obj (obj_type_id, obj_sub_type_id)
						          VALUES (` + strconv.Itoa(objTypeGuild) + `,` + strconv.Itoa(objSubTypeGuild) + `);`)
	logOnError(err, "addObjGuild : exec insert obj")
	if err != nil {
		err2 := tx.Rollback()
		logOnError(err2, "addObjGuild : rollback insert obj")
		return 0, err
	}

	objId, err := res.LastInsertId()
	if err != nil {
		err2 := tx.Rollback()
		logOnError(err2, "addObjGuild : rollback get lastInsertId")
		return 0, err
	}

	stmt, err := tx.Prepare(`INSERT INTO obj_guild	(obj_id, tag, name, chat_id, deposit_chat_id)
							 VALUES 				(?,      ?,   ?,    NULL,    NULL);`)
	logOnError(err, "addObjGuild : prepare insert obj_guild")
	if err != nil {
		err2 := tx.Rollback()
		logOnError(err2, "addObjGuild : rollback prepare insert obj_guild")
		return 0, err
	}
	defer stmt.Close()

	_, err = stmt.Exec(objId, tag, name)
	logOnError(err, "addObjGuild : exec insert obj_guild")
	if err != nil {
		err2 := tx.Rollback()
		logOnError(err2, "addObjGuild : rollback exec insert obj")
		return 0, err
	}

	err = tx.Commit()
	logOnError(err, "addObjGuild : commit")
	if err != nil {
		return 0, err
	}
	return objId, nil
}

func getObjGuildID(s string) int64 {
	if g, ok := cacheObjGuild[s]; ok {
		return g.ObjID64
	} else {
		objID64, err := addObjGuild(s, ``)
		logOnError(err, "getObjGuildID")
		g := new(ChatWarsGuild)
		g.ObjID64 = objID64
		g.Tag = s
		g.Name = ``
		cacheObjGuild[s] = *g
	}
	return cacheObjGuild[s].ObjID64
}

func loadObjGuild() error {
	var (
		id   int64
		tag  string
		name string
	)

	cacheObjGuild = make(map[string]ChatWarsGuild)

	guilds, err := db.Query(`SELECT og.obj_id, og.tag, og.name FROM obj_guild og;`)
	if err != nil {
		return err
	}
	defer guilds.Close()

	for guilds.Next() {
		err = guilds.Scan(&id, &tag, &name)
		if err != nil {
			return err
		}
		g := new(ChatWarsGuild)
		g.ObjID64 = id
		g.Tag = tag
		g.Name = name
		cacheObjGuild[tag] = *g
	}

	return nil
}

func addObjUser(name string) (int64, error) {
	tx, err := db.Begin()
	logOnError(err, "addObjUser : start transaction")
	if err != nil {
		return 0, err
	}

	res, err := tx.Exec(`INSERT INTO obj (obj_type_id, obj_sub_type_id)
						          VALUES (` + strconv.Itoa(objTypeUser) + `,` + strconv.Itoa(objSubTypeUser) + `);`)
	logOnError(err, "addObjUser : exec insert obj")
	if err != nil {
		err2 := tx.Rollback()
		logOnError(err2, "addObjUser : rollback insert obj")
		return 0, err
	}

	objId, err := res.LastInsertId()
	if err != nil {
		err2 := tx.Rollback()
		logOnError(err2, "addObjUser : rollback get lastInsertId")
		return 0, err
	}

	stmt, err := tx.Prepare(`INSERT INTO obj_user	(obj_id, name)
							 VALUES 				(?,      ?);`)
	logOnError(err, "addObjUser : prepare insert obj_user")
	if err != nil {
		err2 := tx.Rollback()
		logOnError(err2, "addObjUser : rollback prepare insert obj_user")
		return 0, err
	}
	defer stmt.Close()

	_, err = stmt.Exec(objId, name)
	logOnError(err, "addObjUser : exec insert obj_user")
	if err != nil {
		err2 := tx.Rollback()
		logOnError(err2, "addObjUser : rollback exec insert obj")
		return 0, err
	}

	err = tx.Commit()
	logOnError(err, "addObjUser : commit")
	if err != nil {
		return 0, err
	}
	return objId, nil
}

func getObjUserID(s string) int64 {
	if u, ok := cacheObjUser[s]; ok {
		return u.ObjID64
	} else {
		objID64, err := addObjUser(s)
		logOnError(err, "getObjUserID")
		u := new(ChatWarsUser)
		u.ObjID64 = objID64
		u.Name = s
		cacheObjUser[s] = *u
	}
	return cacheObjUser[s].ObjID64
}

func loadObjUser() error {
	var (
		id   int64
		name string
	)

	cacheObjUser = make(map[string]ChatWarsUser)

	users, err := db.Query(`SELECT ou.obj_id, ou.name FROM obj_user ou;`)
	if err != nil {
		return err
	}
	defer users.Close()

	for users.Next() {
		err = users.Scan(&id, &name)
		if err != nil {
			return err
		}
		u := new(ChatWarsUser)
		u.ObjID64 = id
		u.Name = name
		cacheObjUser[name] = *u
	}

	return nil
}