Refactor codebase for clarity and consistency.

settings.go

@@ -1,10 +1,13 @@
 package traefikoidc
 
-import "os"
+import (
+	"fmt"
+	"net/http"
+	"os"
+)
 
-// constants
 const (
-	cookie_name = "_raczylo_oidc"
+	cookieName = "_raczylo_oidc"
 )
 
 type Config struct {
@@ -19,6 +22,59 @@ type Config struct {
 }
 
 func CreateConfig() *Config {
-	infoLogger.SetOutput(os.Stdout)
-	return &Config{}
+	return &Config{
+		Scopes:   []string{"openid", "profile", "email"},
+		LogLevel: "info",
+	}
+}
+
+func (c *Config) Validate() error {
+	if c.ProviderURL == "" {
+		return fmt.Errorf("providerURL is required")
+	}
+	if c.CallbackURL == "" {
+		return fmt.Errorf("callbackURL is required")
+	}
+	if c.ClientID == "" {
+		return fmt.Errorf("clientID is required")
+	}
+	if c.ClientSecret == "" {
+		return fmt.Errorf("clientSecret is required")
+	}
+	if c.SessionEncryptionKey == "" {
+		return fmt.Errorf("sessionEncryptionKey is required")
+	}
+	return nil
+}
+
+type defaultLogger struct {
+	level string
+}
+
+func NewLogger(level string) Logger {
+	return &defaultLogger{level: level}
+}
+
+func (l *defaultLogger) Infof(format string, args ...interface{}) {
+	if l.level == "info" || l.level == "debug" {
+		fmt.Printf("INFO: "+format+"\n", args...)
+	}
+}
+
+func (l *defaultLogger) Errorf(format string, args ...interface{}) {
+	fmt.Fprintf(os.Stderr, "ERROR: "+format+"\n", args...)
+}
+
+type HTTPClient interface {
+	Get(url string) (*http.Response, error)
+	Do(req *http.Request) (*http.Response, error)
+}
+
+type Logger interface {
+	Infof(format string, args ...interface{})
+	Errorf(format string, args ...interface{})
+}
+
+func handleError(w http.ResponseWriter, message string, code int) {
+	http.Error(w, message, code)
 }