package manager

import (
	"errors"
	"git.noahlan.cn/northlan/ngs/session"
)

type DataManager struct {
}

func NewDataManager() *DataManager {
	return &DataManager{}
}

func (m *DataManager) SessionGameStatus(session *session.Session, status GameStatus) GameStatus {
	if data, err := m.SessionData(session); err != nil {
		return GameEnded
	} else {
		return data.SetStatus(status)
	}
}

func (m *DataManager) SessionData(session *session.Session) (*GameData, error) {
	if !session.HasKey(DataKey) {
		return nil, errors.New("session中无data数据")
	}
	return session.Value(DataKey).(*GameData), nil
}

func (m *DataManager) BattleIdBySession(session *session.Session) int64 {
	data, err := m.SessionData(session)
	if err != nil {
		return 0
	}
	return data.BattleId()
}