package sentio

import (
	"context"
	"errors"
)

var (
	ErrMarketClosed  = errors.New("market is closed")
	ErrTooSmallOrder = errors.New("too small order size")
)

type Market interface {
	Connect(done chan struct{}) (chan MarketConnection, error)
	Subscribe(symbol string) error

	IsMarketOpened() bool
	Time() Clock

	Buy(ctx context.Context, symbol string, ratio float64) (float64, Order, error)
	Sell(ctx context.Context, symbol string, ratio float64) (float64, Order, error)
	CancelOrder(id string) error

	Orders() ([]Order, error)
	Portfolio() (Portfolio, error)
	PortfolioHistory() ([]PortfolioRecord, error)

	Cash() (float64, error)
	Equity() (float64, error)
	MaxBudget() float64
}