db

type AssetService interface {
	Create(assets ...asset.Asset) error
	Read(symbols ...string) ([]asset.Asset, error)
	Update(assets ...asset.Asset) error
	Delete(assets ...asset.Asset) error
}

type CandlestickService interface {
	Create(cs *candlestick.List) error
	Read(cs *candlestick.List, start, end timestamp.Timestamp, limit uint) error
	Update(cs *candlestick.List) error
	Delete(cs *candlestick.List) error
}

type DB interface {
	Assets() AssetService
	Candlesticks() CandlestickService
	Periods() PeriodService
	Pairs() PairService
	Exchanges() ExchangeService
}

type ExchangeService interface {
	Create(exchanges ...exchange.Exchange) error
	Read(names ...string) ([]exchange.Exchange, error)
	Update(exchanges ...exchange.Exchange) error
	Delete(exchanges ...exchange.Exchange) error

	GetAndSetLockedExpiration(fn func(time.Time) (*time.Time, error)) error
	SetPairs(exchangeName string, pairs []pair.Pair) error
}

type PairService interface {
	Create(pairs ...pair.Pair) error
	Read(pairs ...pair.Pair) ([]pair.Pair, error)
	Update(pairs ...pair.Pair) error
	Delete(pairs ...pair.Pair) error

	ReadPerExchange(exchangeName string) ([]pair.Pair, error)
}

type PeriodService interface {
	Create(periods ...period.Period) error
	Read(names ...string) ([]period.Period, error)
	Update(periods ...period.Period) error
	Delete(periods ...period.Period) error
}