refactor: extract cfg package

3 files changed, 46 insertions, 0 deletions

diff --git a/pkg/cfg/cfg.go b/pkg/cfg/cfg.go
new file mode 100644
index 00000000..0d7a6427
--- /dev/null
+++ b/pkg/cfg/cfg.go
@@ -0,0 +1,34 @@
+package cfg
+
+import (
+	"crypto/tls"
+	"net/http"
+)
+
+type Config struct {
+	BindAddress string
+	Mux         http.Handler
+	TLS         *tls.Config
+}
+
+func New(addr string, options ...Option) *Config {
+	if addr == "" {
+		addr = ":0"
+	}
+
+	c := &Config{
+		BindAddress: addr,
+		Mux:         http.DefaultServeMux,
+	}
+	for _, option := range options {
+		option(c)
+	}
+	return c
+}
+
+func (c *Config) Run(server *http.Server) error {
+	if c.TLS != nil {
+		return server.ListenAndServeTLS("", "")
+	}
+	return server.ListenAndServe()
+}
diff --git a/pkg/cfg/mux.go b/pkg/cfg/mux.go
new file mode 100644
index 00000000..694ee9e7
--- /dev/null
+++ b/pkg/cfg/mux.go
@@ -0,0 +1,9 @@
+package cfg
+
+import "net/http"
+
+func WithMux(mux http.Handler) Option {
+	return func(config *Config) {
+		config.Mux = mux
+	}
+}
diff --git a/pkg/cfg/option.go b/pkg/cfg/option.go
new file mode 100644
index 00000000..0f3e87d8
--- /dev/null
+++ b/pkg/cfg/option.go
@@ -0,0 +1,3 @@
+package cfg
+
+type Option func(*Config)