package option

import (
	"crypto/tls"

	E "github.com/sagernet/sing/common/exceptions"
)

type InboundTLSOptions struct {
	Enabled         bool     `json:"enabled,omitempty"`
	ServerName      string   `json:"server_name,omitempty"`
	ALPN            []string `json:"alpn,omitempty"`
	MinVersion      string   `json:"min_version,omitempty"`
	MaxVersion      string   `json:"max_version,omitempty"`
	CipherSuites    []string `json:"cipher_suites,omitempty"`
	Certificate     string   `json:"certificate,omitempty"`
	CertificatePath string   `json:"certificate_path,omitempty"`
	Key             string   `json:"key,omitempty"`
	KeyPath         string   `json:"key_path,omitempty"`
}

type OutboundTLSOptions struct {
	Enabled           bool     `json:"enabled,omitempty"`
	DisableSNI        bool     `json:"disable_sni,omitempty"`
	ServerName        string   `json:"server_name,omitempty"`
	Insecure          bool     `json:"insecure,omitempty"`
	ALPN              []string `json:"alpn,omitempty"`
	MinVersion        string   `json:"min_version,omitempty"`
	MaxVersion        string   `json:"max_version,omitempty"`
	CipherSuites      []string `json:"cipher_suites,omitempty"`
	DisableSystemRoot bool     `json:"disable_system_root,omitempty"`
	Certificate       string   `json:"certificate,omitempty"`
	CertificatePath   string   `json:"certificate_path,omitempty"`
}

func ParseTLSVersion(version string) (uint16, error) {
	switch version {
	case "1.0":
		return tls.VersionTLS10, nil
	case "1.1":
		return tls.VersionTLS11, nil
	case "1.2":
		return tls.VersionTLS12, nil
	case "1.3":
		return tls.VersionTLS13, nil
	default:
		return 0, E.New("unknown tls version:", version)
	}
}