1.0.8

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@pushrocks/smartrule",
-  "version": "1.0.3",
+  "version": "1.0.8",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@pushrocks/smartrule",
-  "version": "1.0.3",
+  "version": "1.0.8",
   "private": false,
   "description": "a smart rule library for handling decision trees.",
   "main": "dist/index.js",

test/test.ts

@@ -1,8 +1,33 @@
 import { expect, tap } from '@pushrocks/tapbundle';
 import * as smartrule from '../ts/index';
 
+interface ITestMessage {
+  id: string;
+  body: string;
+}
+
+let testSmartruleInstance: smartrule.SmartRule<ITestMessage>;
+
 tap.test('first test', async () => {
-  console.log(smartrule.standardExport);
+  testSmartruleInstance = new smartrule.SmartRule<ITestMessage>();
+  testSmartruleInstance.createRule(
+    2,
+    async messageArg => {
+      if (messageArg.body.startsWith('hello')) {
+        return 'apply-stop';
+      }
+    },
+    async messageArg => {
+      console.log(`rule triggered for message with body ${messageArg.body}`);
+    }
+  );
+});
+
+tap.test('make a decision based on an object', async () => {
+  testSmartruleInstance.makeDecision({
+    id: '123456',
+    body: 'hello, there. This is a cool message!'
+  })
 });
 
 tap.start();

ts/index.ts

@@ -1,3 +1 @@
-import * as plugins from './smartrule.plugins';
-
-export let standardExport = 'Hi there! :) This is an exported string';
+export * from './smartrule.classes.smartrule';

ts/smartrule.classes.rule.ts

@@ -0,0 +1,21 @@
+import * as plugins from './smartrule.plugins';
+import { SmartRule } from './smartrule.classes.smartrule';
+
+export type TTreeActionResult = 'continue' | 'apply-continue' | 'apply-stop' | 'stop';
+export type TActionFunc = (objectArg) => Promise<any>;
+
+export type TCheckFunc<T> = (objectArg: T) => Promise<TTreeActionResult>;
+
+export class Rule<T> {
+  public smartRuleRef: SmartRule<T>;
+  public priority: number;
+  public checkFunction: TCheckFunc<T>;
+  public actionFunction: TActionFunc;
+
+  constructor(smartRuleRef: SmartRule<T>, priorityArg: number, checkFunctionArg: TCheckFunc<T>, actionFunctionArg: TActionFunc) {
+    this.smartRuleRef = smartRuleRef;
+    this.priority = priorityArg;
+    this.checkFunction = checkFunctionArg;
+    this.actionFunction = actionFunctionArg;
+  }
+}

ts/smartrule.classes.smartrule.ts

@@ -0,0 +1,68 @@
+import * as plugins from './smartrule.plugins';
+import { Rule, TCheckFunc, TActionFunc, TTreeActionResult } from './smartrule.classes.rule';
+
+export class SmartRule<T> {
+  public rules: Array<Rule<T>> = [];
+
+  /**
+   * makes a decision based on the given obect and the given rules
+   * @param objectArg 
+   */
+  public async makeDecision(objectArg: T) {
+    // lets sort the rules
+    this.rules = this.rules.sort((a,b) => {
+      if (a.priority > b.priority) {
+        return 1;
+      } else {
+        return 0;
+      }
+    });
+
+    // gets the next batch with the same priority
+    const getNextParallelBatch = (priorityStart: number) => {
+      return this.rules.filter(rule => {
+        return rule.priority === priorityStart;
+      });
+    };
+
+    // lets run the checks
+    const runNextBatch = async (startPriority: number, runRulesAmount: number): Promise<void> => {
+      const nextBatch = getNextParallelBatch(startPriority);
+      runRulesAmount = runRulesAmount + nextBatch.length;
+      const outcomes: TTreeActionResult[] = [];
+      for (const rule of nextBatch) {
+        const checkResult = await rule.checkFunction(objectArg);
+        if (checkResult.startsWith("apply")) {
+          await rule.actionFunction(objectArg); // here the action function is run
+        }
+        outcomes.push(checkResult);
+      }
+
+      if (outcomes.length > 0) {
+        const finalOutcomeOfBatch: TTreeActionResult = outcomes.reduce((previous, current, index, array) => {
+          if (current.includes('continue') || previous.includes('continue')) {
+            return 'continue';
+          } else {
+            return 'stop';
+          }
+        });
+        if (finalOutcomeOfBatch === 'stop') {
+          return;
+        }
+      }
+
+      if (runRulesAmount < this.rules.length) {
+        await runNextBatch((startPriority + 1), runRulesAmount);
+      } else {
+        return;
+      }
+    };
+
+    await runNextBatch(0,0);
+  }
+
+  public createRule(priorityArg: number, checkFunctionArg: TCheckFunc<T>, actionFunctionArg: TActionFunc) {
+    const rule = new Rule<T>(this, priorityArg, checkFunctionArg, actionFunctionArg);
+    this.rules.push(rule);
+  }
+}