package tsdb

import (
	"time"

	"github.com/influxdb/influxdb/toml"
)

const (
	// DefaultMaxWALSize is the default size of the WAL before it is flushed.
	DefaultMaxWALSize = 100 * 1024 * 1024 // 100MB

	// DefaultWALFlushInterval is the frequency the WAL will get flushed if
	// it doesn't reach its size threshold.
	DefaultWALFlushInterval = 10 * time.Minute

	// DefaultWALPartitionFlushDelay is the sleep time between WAL partition flushes.
	DefaultWALPartitionFlushDelay = 2 * time.Second
)

type Config struct {
	Dir                    string        `toml:"dir"`
	MaxWALSize             int           `toml:"max-wal-size"`
	WALFlushInterval       toml.Duration `toml:"wal-flush-interval"`
	WALPartitionFlushDelay toml.Duration `toml:"wal-partition-flush-delay"`
}

func NewConfig() Config {
	return Config{
		MaxWALSize:             DefaultMaxWALSize,
		WALFlushInterval:       toml.Duration(DefaultWALFlushInterval),
		WALPartitionFlushDelay: toml.Duration(DefaultWALPartitionFlushDelay),
	}
}