X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Futils%2FFileUtils.ts;h=ecb945bf40915841809270453428725cddf6b182;hb=6a4032b5d8f3cbaa18d3beddcdfe9d335c1cba90;hp=b3940b718e2a2c0240808b0ee8aaf807b5707bfe;hpb=72f041bd50fc25ca5d233565cbc0ea836220ec0f;p=e-mobility-charging-stations-simulator.git

diff --git a/src/utils/FileUtils.ts b/src/utils/FileUtils.ts
index b3940b71..ecb945bf 100644
--- a/src/utils/FileUtils.ts
+++ b/src/utils/FileUtils.ts
@@ -1,33 +1,37 @@
-import logger from './Logger';
+import { type FSWatcher, type WatchListener, readFileSync, watch } from 'node:fs';
 
-export default class FileUtils {
-  static handleFileException(logPrefix: string, fileType: string, filePath: string, error: NodeJS.ErrnoException, consoleOut = false): void {
-    const prefix = logPrefix.length !== 0 ? logPrefix + ' ' : '';
-    if (error.code === 'ENOENT') {
-      if (consoleOut) {
-        console.warn(prefix + fileType + ' file ' + filePath + ' not found: ', error);
-      } else {
-        logger.warn(prefix + fileType + ' file ' + filePath + ' not found: %j', error);
-      }
-    } else if (error.code === 'EEXIST') {
-      if (consoleOut) {
-        console.warn(prefix + fileType + ' file ' + filePath + ' already exists: ', error);
-      } else {
-        logger.warn(prefix + fileType + ' file ' + filePath + ' already exists: %j', error);
-      }
-    } else if (error.code === 'EACCES') {
-      if (consoleOut) {
-        console.warn(prefix + fileType + ' file ' + filePath + ' access denied: ', error);
-      } else {
-        logger.warn(prefix + fileType + ' file ' + filePath + ' access denied: %j', error);
-      }
-    } else {
-      if (consoleOut) {
-        console.error(prefix + fileType + ' file ' + filePath + ' error: ', error);
-      } else {
-        logger.error(prefix + fileType + ' file ' + filePath + ' error: %j', error);
+import { handleFileException } from './ErrorUtils';
+import { logger } from './Logger';
+import { isNotEmptyString } from './Utils';
+import type { FileType, JsonType } from '../types';
+
+export const watchJsonFile = <T extends JsonType>(
+  file: string,
+  fileType: FileType,
+  logPrefix: string,
+  refreshedVariable?: T,
+  listener: WatchListener<string> = (event, filename) => {
+    if (isNotEmptyString(filename) && event === 'change') {
+      try {
+        logger.debug(`${logPrefix} ${fileType} file ${file} have changed, reload`);
+        refreshedVariable && (refreshedVariable = JSON.parse(readFileSync(file, 'utf8')) as T);
+      } catch (error) {
+        handleFileException(file, fileType, error as NodeJS.ErrnoException, logPrefix, {
+          throwError: false,
+        });
       }
-      throw error;
     }
+  },
+): FSWatcher | undefined => {
+  if (isNotEmptyString(file)) {
+    try {
+      return watch(file, listener);
+    } catch (error) {
+      handleFileException(file, fileType, error as NodeJS.ErrnoException, logPrefix, {
+        throwError: false,
+      });
+    }
+  } else {
+    logger.info(`${logPrefix} No ${fileType} file to watch given. Not monitoring its changes`);
   }
-}
+};