feat(preferences): added support for server-based preferences, rather than client-based

re #4

app/client/assets/js/isaiah.js

@@ -67,6 +67,13 @@
       });
   };
 
+  /**
+   * Determine whether a key-value association exists in the localStorage
+   * @param {string} key
+   * @returns {boolean}
+   */
+  const lsExists = (key) => (localStorage.getItem(key) === null ? false : true);
+
   /**
    * Retrieve a value from localStorage, with support for booleans and default value
    * @param {string} key
@@ -84,7 +91,7 @@
   /**
    * Determine the general type of a variable
    * @param {*} v
-   * @returns {'string'|'numeric'|'date'}
+   * @returns {'string'|'numeric'}
    */
   const getGeneralType = (v) => {
     if (typeof v !== 'string') v = v.toString();
@@ -4285,6 +4292,32 @@
         break;
 
       case 'auth':
+        // Load server-sent preferences if any
+        if ('Preferences' in notification.Content) {
+          for (const entry of Object.entries(
+            notification.Content.Preferences
+          )) {
+            // Camelize the the original key
+            const newKey = entry[0]
+              .replace('CLIENT_PREFERENCE_', '')
+              .toLowerCase()
+              .replace(/[^a-zA-Z0-9]+(.)/g, (m, chr) => chr.toUpperCase());
+
+            // Turn the stringified value into a typed variable
+            let newValue = null;
+            if (['true', '1', 'on'].includes(entry[1].toLowerCase()))
+              newValue = true;
+            else if (['false', '0', 'off'].includes(entry[1].toLowerCase()))
+              newValue = false;
+            else newValue = entry[1];
+
+            // Update the current preferences if unset
+            if (!lsExists(newKey))
+              if (newKey !== 'theme') state.settings[newKey] = newValue;
+              else state.appearance.currentTheme = newValue;
+          }
+        }
+
         if ('Authentication' in notification.Content) {
           state.message.category = 'authentication';
           state.message.type = notification.Type;

app/server/server/authentication.go

@@ -23,6 +23,7 @@ func (Authentication) RunCommand(server *Server, session _session.GenericSession
 					"Authentication": ui.JSON{
 						"Message": "Your are now authenticated",
 					},
+					"Preferences": server.GetPreferences(),
 				},
 			}))
 			break
@@ -82,6 +83,7 @@ func (Authentication) RunCommand(server *Server, session _session.GenericSession
 					"Authentication": ui.JSON{
 						"Message": "Your are now authenticated",
 					},
+					"Preferences": server.GetPreferences(),
 				},
 			}),
 		)

app/server/server/server.go

@@ -114,7 +114,11 @@ func (server *Server) runCommand(session _session.GenericSession, command ui.Com
 			server.SendNotification(
 				session,
 				ui.NotificationInit(ui.NotificationParams{
-					Content: ui.JSON{"Tabs": tabs, "Agents": agents, "Hosts": hosts},
+					Content: ui.JSON{
+						"Tabs":   tabs,
+						"Agents": agents,
+						"Hosts":  hosts,
+					},
 				}))
 		} else if command.Action == "enumerate" {
 			// `enumerate` is used only in the context of the `Jump` command
@@ -325,6 +329,7 @@ func (server *Server) Handle(session _session.GenericSession, message ...[]byte)
 						"Spontaneous": true,
 						"Message":     "Your are now authenticated",
 					},
+					"Preferences": server.GetPreferences(),
 				},
 			}))
 		}
@@ -456,3 +461,14 @@ func (s *Server) SetHost(name string) {
 	s.Docker = _client.NewClientWithOpts(client.WithHost(correspondingHost[1]))
 	s.CurrentHostName = name
 }
+
+func (s *Server) GetPreferences() ui.Preferences {
+	var preferences = make(ui.Preferences, 0)
+	for k, v := range _os.GetFullEnv() {
+		if strings.HasPrefix(k, "CLIENT_PREFERENCE_") {
+			preferences[k] = v
+		}
+	}
+
+	return preferences
+}

app/server/ui/preference.go

@@ -0,0 +1,4 @@
+package ui
+
+// Represent a JS preference in the web browser
+type Preferences map[string]string

app/server/ui/row.go

@@ -1,5 +1,5 @@
 package ui
 
-// Represent
+// Represent a row in the web browser
 type Row map[string]interface{}
 type Rows []Row