fix(core): update

This commit is contained in:
Philipp Kunz 2020-01-20 14:41:27 +00:00
parent 7be7617c07
commit 5fabe776f5
4 changed files with 111 additions and 4 deletions

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@ -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(
0,
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();

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

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@ -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;
}
}

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@ -0,0 +1,63 @@
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) => {
const nextBatch = getNextParallelBatch(0);
const outcomes: TTreeActionResult[] = [];
for (const rule of nextBatch) {
const checkResult = await rule.checkFunction(objectArg);
if (checkResult.startsWith("apply")) {
await rule.actionFunction(objectArg);
}
outcomes.push(checkResult);
};
const finalOutcome: TTreeActionResult = outcomes.reduce((previous, current, index, array) => {
if (current.includes('continue') || previous.includes('continue')) {
return 'continue';
} else {
return 'stop';
}
});
if (finalOutcome === 'stop') {
return;
}
if (startPriority < this.rules[this.rules.length-1].priority) {
runNextBatch(startPriority++);
}
};
await runNextBatch(0);
}
public createRule(priorityArg: number, checkFunctionArg: TCheckFunc<T>, actionFunctionArg: TActionFunc) {
const rule = new Rule<T>(this, priorityArg, checkFunctionArg, actionFunctionArg);
this.rules.push(rule);
}
}