Add OpenAPI endpoint at /openapi with Swagger documentation

cmd/docs/docs.go

@@ -87,12 +87,12 @@ type swaggerInfo struct {
 
 // SwaggerInfo holds exported Swagger Info so clients can modify it
 var SwaggerInfo = swaggerInfo{
-	Version:     "",
-	Host:        "",
-	BasePath:    "",
-	Schemes:     []string{},
-	Title:       "",
-	Description: "",
+	Version:     "1.0",
+	Host:        "localhost:8080",
+	BasePath:    "/",
+	Schemes:     []string{"http", "https"},
+	Title:       "MusicServer API",
+	Description: "API for the MusicServer application",
 }
 
 type s struct{}
@@ -129,3 +129,9 @@ func (s *s) ReadDoc() string {
 func init() {
 	swag.Register("swagger", &s{})
 }
+
+// GetSwaggerJSON returns the swagger JSON
+func GetSwaggerJSON() string {
+	s := &s{}
+	return s.ReadDoc()
+}