Add ability to make callouts through apex

Users may leverage named credentials to hit secure endpoints

Author: surajp

.prettierrc

@@ -8,6 +8,10 @@
     {
       "files": "*.{cmp,page,component}",
       "options": { "parser": "html","printWidth":120 }
+    },
+    {
+      "files": "*.{cls,trigger,apex}",
+      "options": { "parser": "apex","printWidth":120 }
     }
   ]
 }

force-app/main/default/classes/APICallController.cls

@@ -0,0 +1,33 @@
+/**
+ ** description: Controller for making api calls and sending the response back
+ **/
+
+public with sharing class APICallController {
+  @AuraEnabled
+  public static HttpResponseWrapper makeApiCall(
+    String endPoint,
+    String method,
+    String bodyStr,
+    Map<String, String> headers
+  ) {
+    HttpRequest req = new HttpRequest();
+    req.setEndpoint(endPoint);
+    system.debug('endpoint ' + endpoint);
+    req.setMethod(method);
+    if (method != 'GET') {
+      req.setBody(bodyStr);
+    }
+    if (headers != null) {
+      for (String key : headers.keySet()) {
+        req.setHeader(key, headers.get(key));
+      }
+    }
+    HttpResponse resp = new Http().send(req);
+    system.debug('response ' + resp.getBody());
+    Map<String, String> respHeaders = new Map<String, String>();
+    for (String key : resp.getHeaderKeys()) {
+      respHeaders.put(key, String.valueOf(resp.getHeader(key)));
+    }
+    return new HttpResponseWrapper(resp.getBody(), resp.getStatusCode(), respHeaders);
+  }
+}

force-app/main/default/classes/APICallController.cls-meta.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ApexClass xmlns="http://soap.sforce.com/2006/04/metadata">
+    <apiVersion>48.0</apiVersion>
+    <status>Active</status>
+</ApexClass>

force-app/main/default/classes/DynamicSOQLDMLControllerTest.cls

@@ -6,7 +6,7 @@ public with sharing class DynamicSOQLDMLControllerTest {
     insert a;
     a.Phone = '432424';
     Account[] recordsToUpdate = new List<Account>{ a };
-    DynamicSOQLDMLController.executeDml('update', recordsToUpdate, null, null);
+    DynamicSOQLDMLController.executeDml('update', JSON.serialize(recordsToUpdate), 'Account');
     a = [SELECT Phone FROM Account WHERE Id = :a.Id];
     System.assertEquals('432424', a.Phone);
   }
@@ -16,11 +16,8 @@ public with sharing class DynamicSOQLDMLControllerTest {
     // we won't test fetching cmdt
     DynamicSOQLDMLController.getJSFromCmdt('Account');
     String acctString = '[{"attributes":{"type":"Account"},"Name":"Test Account"}]';
-    DynamicSOQLDMLController.executeDml('insert', null, acctString, 'Account');
-    System.assertEquals(
-      1,
-      [SELECT ID FROM Account WHERE Name = 'Test Account'].size()
-    );
+    DynamicSOQLDMLController.executeDml('insert', acctString, 'Account');
+    System.assertEquals(1, [SELECT ID FROM Account WHERE Name = 'Test Account'].size());
   }
 
   @isTest
@@ -34,7 +31,7 @@ public with sharing class DynamicSOQLDMLControllerTest {
     accountsToUpdate.add(a1);
 
     String acctString = JSON.serialize(accountsToUpdate);
-    DynamicSOQLDMLController.executeDml('upsert', null, acctString, 'Account');
+    DynamicSOQLDMLController.executeDml('upsert', acctString, 'Account');
     System.assertEquals(2, [SELECT ID FROM Account].size());
     a = [SELECT Phone FROM Account WHERE Id = :a.Id];
     System.assertEquals('432343', a.Phone);
@@ -44,9 +41,7 @@ public with sharing class DynamicSOQLDMLControllerTest {
   public static void testSoql() {
     Account a = new Account(Name = 'Test Account');
     insert a;
-    Account[] acctsResult = DynamicSOQLDMLController.executeSoqlQuery(
-      'Select Name from Account'
-    );
+    Account[] acctsResult = DynamicSOQLDMLController.executeSoqlQuery('Select Name from Account');
     System.assertEquals(1, acctsResult.size());
     System.assertEquals('Test Account', acctsResult[0].Name);
   }

force-app/main/default/classes/HttpResponseWrapper.cls

@@ -0,0 +1,14 @@
+public with sharing class HttpResponseWrapper {
+  @AuraEnabled
+  public String body;
+  @AuraEnabled
+  public Integer statusCode;
+  @AuraEnabled
+  public Map<String, String> headers;
+
+  public HttpResponseWrapper(String body, Integer statusCode, Map<String, String> headers) {
+    this.body = body;
+    this.statusCode = statusCode;
+    this.headers = headers;
+  }
+}

force-app/main/default/classes/HttpResponseWrapper.cls-meta.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ApexClass xmlns="http://soap.sforce.com/2006/04/metadata">
+    <apiVersion>48.0</apiVersion>
+    <status>Active</status>
+</ApexClass>

force-app/main/default/lwc/httpRequest/httpRequest.html

@@ -0,0 +1,3 @@
+<template>
+    
+</template>

force-app/main/default/lwc/httpRequest/httpRequest.js

@@ -0,0 +1,50 @@
+import { api } from "lwc";
+import makeApiCall from "@salesforce/apex/APICallController.makeApiCall";
+
+export default class HttpRequest {
+  endPoint = "";
+  method = "GET";
+  body = null;
+  headers = {};
+
+  @api
+  setEndpoint(val) {
+    this.endPoint = val;
+  }
+
+  @api
+  setMethod(val) {
+    this.method = val;
+  }
+
+  @api
+  setBody(val) {
+    this.body = val;
+  }
+
+  @api
+  addHeader(key, value) {
+    if (typeof value !== "string")
+      throw "You may only set string values for headers";
+    this.headers[key] = value;
+  }
+
+  @api
+  clear() {
+    this.endPoint = "";
+    this.method = "GET";
+    this.body = null;
+    this.headers = {};
+  }
+
+  @api
+  async send() {
+    let resp = await makeApiCall({
+      endPoint: this.endPoint,
+      method: this.method,
+      bodyStr: this.body ? JSON.stringify(this.body) : "",
+      headers: this.headers
+    });
+    return resp;
+  }
+}

force-app/main/default/lwc/httpRequest/httpRequest.js-meta.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<LightningComponentBundle xmlns="http://soap.sforce.com/2006/04/metadata">
+    <apiVersion>48.0</apiVersion>
+    <isExposed>false</isExposed>
+</LightningComponentBundle>

force-app/main/default/lwc/jsButtonLwc/jsButtonLwc.js

@@ -4,6 +4,7 @@ import executeSoql from "@salesforce/apex/DynamicSOQLDMLController.executeSoqlQu
 import executeDml from "@salesforce/apex/DynamicSOQLDMLController.executeDml";
 import getSObjectType from "@salesforce/apex/DynamicSOQLDMLController.getSObjectTypeFromId";
 import { ShowToastEvent } from "lightning/platformShowToastEvent";
+import HttpRequest from "c/httpRequest";
 
 const REGEX_SOQL = "\\|\\|\\s?(select\\s+[^|]+)\\s?\\|\\|";
 const REGEX_UPDATE = "\\|\\|\\s?update\\s([^|;]+);?\\s*\\|\\|";
@@ -16,6 +17,8 @@ export default class JsButtonLwc extends LightningElement {
   @api recordId;
   _notifiedParent = false;
 
+  httpRequest = new HttpRequest();
+
   renderedCallback() {
     if (!this._notifiedParent)
       this.dispatchEvent(new CustomEvent("initcomplete"));
@@ -26,8 +29,8 @@ export default class JsButtonLwc extends LightningElement {
     if (!this.js && this.cmdtName) {
       let js = await fetchJSFromCmdt({ cmdtName: this.cmdtName });
       await this.runJS(js);
-    }else if(this.js){
-      await this.runJS(this.js)
+    } else if (this.js) {
+      await this.runJS(this.js);
     }
   }
 
@@ -47,7 +50,7 @@ export default class JsButtonLwc extends LightningElement {
 
   async executeDml(dmlType, records, sObjectType) {
     try {
-      if(records && !Array.isArray(records)){
+      if (records && !Array.isArray(records)) {
         records = [records];
       }
       if (!sObjectType)
@@ -93,7 +96,9 @@ export default class JsButtonLwc extends LightningElement {
       new RegExp(REGEX_INSERT_UPSERT, "gi"),
       "await this.executeDml('$1',$3,'$2');"
     );
-    let op = await (Function("recordId", `return (async ()=>{${js}})()`).bind(this))(this.recordId);
+    let op = await Function("recordId", `return (async ()=>{${js}})()`).bind(
+      this
+    )(this.recordId);
     return op;
   }
 }