Merge branch '277-opening-plugin-multiple-times-should-be-not-possible' into 'development'

Resolve "opening plugin multiple times should be not possible"

Closes #277

See merge request !216

src/components/Map/Drawer/AvailablePluginsDrawer/AvailablePluginsDrawer.constants.ts

 export const PLUGIN_LOADING_ERROR_PREFIX = 'Failed to load plugin';
+export const PLUGIN_LOADING_TWICE_ERROR = 'Plugin cannot be loaded more than once';

src/components/Map/Drawer/AvailablePluginsDrawer/LoadPluginFromUrl/hooks/useLoadPluginFromUrl.ts

 import { PluginsManager } from '@/services/pluginsManager';
 import axios from 'axios';
 import { ChangeEvent, useMemo, useState, KeyboardEvent } from 'react';
-import { ENTER_KEY_CODE } from '@/constants/common';
+import { ENTER_KEY_CODE, ZERO } from '@/constants/common';
 import { showToast } from '@/utils/showToast';
 import { getErrorMessage } from '@/utils/getErrorMessage';
-import { PLUGIN_LOADING_ERROR_PREFIX } from '../../AvailablePluginsDrawer.constants';
+import md5 from 'crypto-js/md5';
+import {
+  PLUGIN_LOADING_ERROR_PREFIX,
+  PLUGIN_LOADING_TWICE_ERROR,
+} from '../../AvailablePluginsDrawer.constants';
 
 type UseLoadPluginReturnType = {
   handleChangePluginUrl: (event: ChangeEvent<HTMLInputElement>) => void;
@@ -29,6 +33,20 @@ export const useLoadPluginFromUrl = (): UseLoadPluginReturnType => {
       const response = await axios(pluginUrl);
       let pluginScript = response.data;
 
+      const hash = md5(pluginScript).toString();
+
+      if (
+        Array.isArray(PluginsManager.activePlugins[hash]) &&
+        PluginsManager.activePlugins[hash].length > ZERO
+      ) {
+        setIsLoading(false);
+        showToast({
+          type: 'error',
+          message: PLUGIN_LOADING_TWICE_ERROR,
+        });
+        return;
+      }
+
       PluginsManager.setHashedPlugin({
         pluginUrl,
         pluginScript,