package logotel

import (
	"git.blauwelle.com/go/crate/log/logsdk/logjson"
)

const (
	bytesBufferInitialSize = 512
	bytesBufferMaximumSize = 4096
)

func newConfig(opts ...Option) *config {
	cfg := defaultConfig()
	for _, opt := range opts {
		opt.apply(cfg)
	}
	if !cfg.hasPool {
		cfg.bytesBufferPool = logjson.NewBytesBufferPool(bytesBufferInitialSize, bytesBufferMaximumSize)
	}
	return cfg
}

func defaultConfig() *config {
	return &config{
		hasPool: false,
	}
}

// WithBufferPool 指定缓冲池
func WithBufferPool(pool logjson.BytesBufferPool) Option {
	return optionFunc(func(cfg *config) {
		cfg.bytesBufferPool = pool
		cfg.hasPool = true
	})
}

// Option 配置 Processor
type Option interface {
	apply(cfg *config)
}

type config struct {
	bytesBufferPool logjson.BytesBufferPool
	hasPool         bool
}
type optionFunc func(cfg *config)

func (fn optionFunc) apply(cfg *config) {
	fn(cfg)
}