package store

import (
	"context"
	"crypto/tls"
)

type Interface interface {
	Domain() string
	TLS() tls.Certificate
	TLSConfig() *tls.Config

	SetDomain(string)
	SetTLS(tls.Certificate)
}

func New(ctx context.Context, filename string) (Interface, error) {
	return &concrete{
		filename: filename,
	}, nil
}

type concrete struct {
	filename string

	// TODO: these will eventually be persisted to the file in `filename`
	domain string
	cert   tls.Certificate
}

func (c *concrete) Domain() string {
	return c.domain
}

func (c *concrete) TLS() tls.Certificate {
	return c.cert
}

func (c *concrete) TLSConfig() *tls.Config {
	return &tls.Config{
		GetCertificate: func(*tls.ClientHelloInfo) (*tls.Certificate, error) {
			certCopy := c.TLS()

			return &certCopy, nil
		},

		ServerName: c.Domain(),
	}
}

func (c *concrete) SetDomain(domain string) {
	c.domain = domain

	return
}

func (c *concrete) SetTLS(cert tls.Certificate) {
	c.cert = cert

	return
}