X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Futils%2FUtils.ts;h=89119bc2df77181529b4de1371fbcc908c58e251;hb=44eb6026079c8dc2c77b10a96a42d0c0b2da7c8f;hp=2411c605bfc27c44ebd2d70b6bc3643f12a635e3;hpb=17ac262c08a637a9aef23c350176bf476ad212ef;p=e-mobility-charging-stations-simulator.git

diff --git a/src/utils/Utils.ts b/src/utils/Utils.ts
index 2411c605..89119bc2 100644
--- a/src/utils/Utils.ts
+++ b/src/utils/Utils.ts
@@ -1,13 +1,28 @@
-import crypto from 'crypto';
-import { v4 as uuid } from 'uuid';
+import crypto from 'node:crypto';
+import util from 'node:util';
+
+import clone from 'just-clone';
+
+import Constants from './Constants';
+import { WebSocketCloseEventStatusString } from '../types/WebSocket';
 
 export default class Utils {
+  private constructor() {
+    // This is intentional
+  }
+
   public static logPrefix(prefixString = ''): string {
     return new Date().toLocaleString() + prefixString;
   }
 
   public static generateUUID(): string {
-    return uuid();
+    return crypto.randomUUID();
+  }
+
+  public static validateUUID(uuid: string): boolean {
+    return /^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-4[0-9a-fA-F]{3}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$/.test(
+      uuid
+    );
   }
 
   public static async sleep(milliSeconds: number): Promise<NodeJS.Timeout> {
@@ -24,80 +39,90 @@ export default class Utils {
     let secondsStr = seconds.toString();
 
     if (hours < 10) {
-      hoursStr = '0' + hours.toString();
+      hoursStr = `0${hours.toString()}`;
     }
     if (minutes < 10) {
-      minutesStr = '0' + minutes.toString();
+      minutesStr = `0${minutes.toString()}`;
     }
     if (seconds < 10) {
-      secondsStr = '0' + seconds.toString();
+      secondsStr = `0${seconds.toString()}`;
     }
-    return hoursStr + ':' + minutesStr + ':' + secondsStr.substring(0, 6);
+    return `${hoursStr}:${minutesStr}:${secondsStr.substring(0, 6)}`;
   }
 
   public static formatDurationSeconds(duration: number): string {
     return Utils.formatDurationMilliSeconds(duration * 1000);
   }
 
-  public static convertToDate(value: unknown): Date {
-    // Check
-    if (!value) {
-      return value as Date;
+  public static convertToDate(
+    value: Date | string | number | null | undefined
+  ): Date | null | undefined {
+    if (Utils.isNullOrUndefined(value)) {
+      return value as null | undefined;
+    }
+    if (value instanceof Date) {
+      return value;
     }
-    // Check Type
-    if (!(value instanceof Date)) {
-      return new Date(value as string);
+    if (Utils.isString(value) || typeof value === 'number') {
+      return new Date(value);
     }
-    return value;
+    return null;
   }
 
   public static convertToInt(value: unknown): number {
-    let changedValue: number = value as number;
     if (!value) {
       return 0;
     }
+    let changedValue: number = value as number;
     if (Number.isSafeInteger(value)) {
       return value as number;
     }
-    // Check
+    if (typeof value === 'number') {
+      return Math.trunc(value);
+    }
     if (Utils.isString(value)) {
-      // Create Object
       changedValue = parseInt(value as string);
     }
+    if (isNaN(changedValue)) {
+      throw new Error(`Cannot convert to integer: ${value.toString()}`);
+    }
     return changedValue;
   }
 
   public static convertToFloat(value: unknown): number {
-    let changedValue: number = value as number;
     if (!value) {
       return 0;
     }
-    // Check
+    let changedValue: number = value as number;
     if (Utils.isString(value)) {
-      // Create Object
       changedValue = parseFloat(value as string);
     }
+    if (isNaN(changedValue)) {
+      throw new Error(`Cannot convert to float: ${value.toString()}`);
+    }
     return changedValue;
   }
 
   public static convertToBoolean(value: unknown): boolean {
     let result = false;
-    // Check boolean
     if (value) {
       // Check the type
       if (typeof value === 'boolean') {
-        // Already a boolean
-        result = value;
-      } else {
-        // Convert
-        result = value === 'true';
+        return value;
+      } else if (
+        Utils.isString(value) &&
+        ((value as string).toLowerCase() === 'true' || value === '1')
+      ) {
+        result = true;
+      } else if (typeof value === 'number' && value === 1) {
+        result = true;
       }
     }
     return result;
   }
 
-  public static getRandomFloat(max: number, min = 0, negative = false): number {
-    if (max < min || min < 0 || max < 0) {
+  public static getRandomFloat(max = Number.MAX_VALUE, min = 0, negative = false): number {
+    if (max < min || max < 0 || min < 0) {
       throw new RangeError('Invalid interval');
     }
     const randomPositiveFloat = crypto.randomBytes(4).readUInt32LE() / 0xffffffff;
@@ -105,19 +130,13 @@ export default class Utils {
     return sign * (randomPositiveFloat * (max - min) + min);
   }
 
-  public static getRandomInteger(max: number, min = 0): number {
-    if (max < 0) {
-      throw new RangeError('Invalid interval');
-    }
+  public static getRandomInteger(max = Constants.MAX_RANDOM_INTEGER, min = 0): number {
     max = Math.floor(max);
-    if (min) {
-      if (max < min || min < 0) {
-        throw new RangeError('Invalid interval');
-      }
+    if (!Utils.isNullOrUndefined(min) && min !== 0) {
       min = Math.ceil(min);
-      return Math.floor(Utils.secureRandom() * (max - min + 1)) + min;
+      return Math.floor(crypto.randomInt(min, max + 1));
     }
-    return Math.floor(Utils.secureRandom() * (max + 1));
+    return Math.floor(crypto.randomInt(max + 1));
   }
 
   public static roundTo(numberValue: number, scale: number): number {
@@ -130,7 +149,7 @@ export default class Utils {
     return Math.trunc(numberValue * truncPower) / truncPower;
   }
 
-  public static getRandomFloatRounded(max: number, min = 0, scale = 2): number {
+  public static getRandomFloatRounded(max = Number.MAX_VALUE, min = 0, scale = 2): number {
     if (min) {
       return Utils.roundTo(Utils.getRandomFloat(max, min), scale);
     }
@@ -153,8 +172,16 @@ export default class Utils {
     );
   }
 
-  public static cloneObject<T>(object: T): T {
-    return JSON.parse(JSON.stringify(object)) as T;
+  public static isObject(item: unknown): boolean {
+    return (
+      Utils.isNullOrUndefined(item) === false &&
+      typeof item === 'object' &&
+      Array.isArray(item) === false
+    );
+  }
+
+  public static cloneObject<T extends object>(object: T): T {
+    return clone<T>(object);
   }
 
   public static isIterable<T>(obj: T): boolean {
@@ -166,7 +193,7 @@ export default class Utils {
   }
 
   public static isEmptyString(value: unknown): boolean {
-    return Utils.isString(value) && (value as string).length === 0;
+    return Utils.isString(value) && (value as string).trim().length === 0;
   }
 
   public static isUndefined(value: unknown): boolean {
@@ -178,25 +205,33 @@ export default class Utils {
     return value == null ? true : false;
   }
 
-  public static isEmptyArray(object: unknown): boolean {
-    if (!object) {
+  public static isEmptyArray(object: unknown | unknown[]): boolean {
+    if (!Array.isArray(object)) {
       return true;
     }
-    if (Array.isArray(object) && object.length > 0) {
+    if (object.length > 0) {
       return false;
     }
     return true;
   }
 
   public static isEmptyObject(obj: object): boolean {
-    return !Object.keys(obj).length;
+    if (obj?.constructor !== Object) {
+      return false;
+    }
+    // Iterates over the keys of an object, if
+    // any exist, return false.
+    for (const _ in obj) {
+      return false;
+    }
+    return true;
   }
 
   public static insertAt = (str: string, subStr: string, pos: number): string =>
     `${str.slice(0, pos)}${subStr}${str.slice(pos)}`;
 
   /**
-   * @param [retryNumber=0]
+   * @param retryNumber - the number of retries that have already been attempted
    * @returns delay in milliseconds
    */
   public static exponentialDelay(retryNumber = 0): number {
@@ -205,6 +240,10 @@ export default class Utils {
     return delay + randomSum;
   }
 
+  public static isPromisePending(promise: Promise<unknown>): boolean {
+    return util.inspect(promise).includes('pending');
+  }
+
   public static async promiseWithTimeout<T>(
     promise: Promise<T>,
     timeoutMs: number,
@@ -216,7 +255,10 @@ export default class Utils {
     // Create a timeout promise that rejects in timeout milliseconds
     const timeoutPromise = new Promise<never>((_, reject) => {
       setTimeout(() => {
-        timeoutCallback();
+        if (Utils.isPromisePending(promise)) {
+          timeoutCallback();
+          // FIXME: The original promise shall be canceled
+        }
         reject(timeoutError);
       }, timeoutMs);
     });
@@ -233,4 +275,49 @@ export default class Utils {
   public static secureRandom(): number {
     return crypto.randomBytes(4).readUInt32LE() / 0x100000000;
   }
+
+  public static JSONStringifyWithMapSupport(
+    obj: Record<string, unknown> | Record<string, unknown>[] | Map<unknown, unknown>,
+    space?: number
+  ): string {
+    return JSON.stringify(
+      obj,
+      (key, value: Record<string, unknown>) => {
+        if (value instanceof Map) {
+          return {
+            dataType: 'Map',
+            value: [...value],
+          };
+        }
+        return value;
+      },
+      space
+    );
+  }
+
+  /**
+   * Convert websocket error code to human readable string message
+   *
+   * @param code - websocket error code
+   * @returns human readable string message
+   */
+  public static getWebSocketCloseEventStatusString(code: number): string {
+    if (code >= 0 && code <= 999) {
+      return '(Unused)';
+    } else if (code >= 1016) {
+      if (code <= 1999) {
+        return '(For WebSocket standard)';
+      } else if (code <= 2999) {
+        return '(For WebSocket extensions)';
+      } else if (code <= 3999) {
+        return '(For libraries and frameworks)';
+      } else if (code <= 4999) {
+        return '(For applications)';
+      }
+    }
+    if (!Utils.isUndefined(WebSocketCloseEventStatusString[code])) {
+      return WebSocketCloseEventStatusString[code] as string;
+    }
+    return '(Unknown)';
+  }
 }