Add basic auth support to custom API

internal/glance/widget-custom-api.go

@@ -36,8 +36,12 @@ type CustomAPIRequest struct {
 	Body               any                  `yaml:"body"`
 	MockResponse       string               `yaml:"mock-response"`
 	SkipJSONValidation bool                 `yaml:"skip-json-validation"`
-	bodyReader         io.ReadSeeker        `yaml:"-"`
-	httpRequest        *http.Request        `yaml:"-"`
+	BasicAuth          struct {
+		Username string `yaml:"username"`
+		Password string `yaml:"password"`
+	} `yaml:"basic-auth"`
+	bodyReader  io.ReadSeeker `yaml:"-"`
+	httpRequest *http.Request `yaml:"-"`
 }
 
 type customAPIWidget struct {
@@ -190,6 +194,10 @@ func (req *CustomAPIRequest) initialize() error {
 		httpReq.Header.Add(key, value)
 	}
 
+	if req.BasicAuth.Username != "" || req.BasicAuth.Password != "" {
+		httpReq.SetBasicAuth(req.BasicAuth.Username, req.BasicAuth.Password)
+	}
+
 	req.httpRequest = httpReq
 
 	return nil
@@ -708,6 +716,11 @@ var customAPITemplateFuncs = func() template.FuncMap {
 
 			return req
 		},
+		"withBasicAuth": func(username, password string, req *CustomAPIRequest) *CustomAPIRequest {
+			req.BasicAuth.Username = username
+			req.BasicAuth.Password = password
+			return req
+		},
 		"getResponse": func(req *CustomAPIRequest) *customAPIResponseData {
 			err := req.initialize()
 			if err != nil {