CHANGE: multiple entites

src/app/_models/mqtt_base.ts

@@ -17,7 +17,8 @@ export class MQTTEntity implements iMQTTEntityBase {
 
   set name(name: string) {
     this._name = name;
-    this._uniq_id = btoa(this._name).slice(-7).slice(0, 5);
+    if (name == '') return;
+    this._uniq_id = hash(name);
     this.topic_updates.next('stat_t');
   }
 
@@ -98,3 +99,46 @@ export interface iMQTTEntityBase {
 
   toJSON: () => string;
 }
+
+function hash(str: string): string {
+  let seed = cyrb128(str);
+  let rand = sfc32(seed[0], seed[1], seed[2], seed[3]);
+  let rand_num = Math.floor(rand() * 100000).toString();
+  return rand_num;
+}
+
+function cyrb128(str: string) {
+  let h1 = 1779033703,
+    h2 = 3144134277,
+    h3 = 1013904242,
+    h4 = 2773480762;
+  for (let i = 0, k; i < str.length; i++) {
+    k = str.charCodeAt(i);
+    h1 = h2 ^ Math.imul(h1 ^ k, 597399067);
+    h2 = h3 ^ Math.imul(h2 ^ k, 2869860233);
+    h3 = h4 ^ Math.imul(h3 ^ k, 951274213);
+    h4 = h1 ^ Math.imul(h4 ^ k, 2716044179);
+  }
+  h1 = Math.imul(h3 ^ (h1 >>> 18), 597399067);
+  h2 = Math.imul(h4 ^ (h2 >>> 22), 2869860233);
+  h3 = Math.imul(h1 ^ (h3 >>> 17), 951274213);
+  h4 = Math.imul(h2 ^ (h4 >>> 19), 2716044179);
+  (h1 ^= h2 ^ h3 ^ h4), (h2 ^= h1), (h3 ^= h1), (h4 ^= h1);
+  return [h1 >>> 0, h2 >>> 0, h3 >>> 0, h4 >>> 0];
+}
+
+function sfc32(a: number, b: number, c: number, d: number) {
+  return function () {
+    a |= 0;
+    b |= 0;
+    c |= 0;
+    d |= 0;
+    let t = (((a + b) | 0) + d) | 0;
+    d = (d + 1) | 0;
+    a = b ^ (b >>> 9);
+    b = (c + (c << 3)) | 0;
+    c = (c << 21) | (c >>> 11);
+    c = (c + t) | 0;
+    return (t >>> 0) / 4294967296;
+  };
+}