Refactored Beau's Plugin System

It now uses a plugin registry. Plugins are loaded when the configuration
file is first parsed. When a request is made it is passed over to the
available modifiers before and after it's execution and applies
whichever changes are made. It now passes a copy instead of a reference
to provide a nicer interface.

Dynamic values have been added as a plugin type. These plugins are
javascript functions that can be called from within the beau file and
whose results are used as a replacement.

These are added along with variables to the runtime execution flow. The
current order for their execution is:

Request composition -> Dynamic Values -> Pre-Request Modifiers ->
Post-Request Modifiers.

package.json

@@ -25,7 +25,7 @@
   },
   "repository": "git@github.com:Seich/Beau.git",
   "devDependencies": {
-    "jest": "22.0.4"
+    "jest": "^22.4.0"
   },
   "jest": {
     "testEnvironment": "node",

src/__mocks__/beau-dynamic-values.js

@@ -0,0 +1,11 @@
+class DynamicValues {
+	constructor(registry, settings = {}) {
+		registry.defineDynamicValue('add', this.add);
+	}
+
+	add(x, y) {
+		return x + y;
+	}
+}
+
+module.exports = DynamicValues;

src/__mocks__/beau-modifiers.js

@@ -0,0 +1,19 @@
+class Modifiers {
+	constructor(registry, settings = {}) {
+		registry.addPreRequestModifier(this.preRequest);
+		registry.addPostRequestModifier(this.postRequest);
+	}
+
+	preRequest(request, orig) {
+		request.headers.preRequestModifier = true;
+		return request;
+	}
+
+	postRequest(response, orig) {
+		response.body = 'Hello World';
+		response.response.body = 'Hello World';
+		return response;
+	}
+}
+
+module.exports = Modifiers;

src/__mocks__/requireg.js

@@ -1,19 +1,3 @@
 module.exports = function(name) {
-	return function(settings) {
+	return require(name);
-		let response = {
-			name: `${name}`,
-			preRequest(request) {
-				request.wasModified = true;
-
-				return request;
-			},
-
-			postResponse(response) {
-				response.changed = true;
-				return response;
-			}
-		};
-
-		return response;
-	};
 };

src/__tests__/__snapshots__/beau.spec.js.snap

@@ -12,7 +12,33 @@ Beau {
     "ENDPOINT": "http://jsonplaceholder.typicode.com",
     "ENVIRONMENT": Object {},
     "HOSTS": Array [],
-    "PLUGINS": Array [],
+    "PLUGINS": Plugins {
+      "context": Object {},
+      "registry": Object {
+        "dynamicValues": Array [],
+        "postRequestModifiers": Array [],
+        "preRequestModifiers": Array [],
+      },
+    },
+    "REQUESTS": Array [
+      Object {
+        "ALIAS": "get-post",
+        "ENDPOINT": "http://jsonplaceholder.typicode.com",
+        "HEADERS": Object {
+          "authentication": "hello",
+        },
+        "REQUEST": "GET /posts/1",
+      },
+      Object {
+        "ALIAS": "user",
+        "ENDPOINT": "http://jsonplaceholder.typicode.com",
+        "HEADERS": Object {
+          "authentication": "hello",
+          "hello": "world",
+        },
+        "REQUEST": "GET /user",
+      },
+    ],
     "VERSION": 1,
     "configKeys": Array [
       "VERSION",
@@ -48,7 +74,9 @@ Beau {
       "endpoint": "http://jsonplaceholder.typicode.com",
       "version": 1,
     },
-    "requests": Array [
+  },
+  "requests": RequestList {
+    "REQUESTS": Array [
       Object {
         "ALIAS": "get-post",
         "ENDPOINT": "http://jsonplaceholder.typicode.com",
@@ -67,8 +95,6 @@ Beau {
         "REQUEST": "GET /user",
       },
     ],
-  },
-  "requests": RequestList {
     "cache": RequestCache {
       "$cache": Object {
         "$env": Object {},
@@ -84,7 +110,33 @@ Beau {
       "ENDPOINT": "http://jsonplaceholder.typicode.com",
       "ENVIRONMENT": Object {},
       "HOSTS": Array [],
-      "PLUGINS": Array [],
+      "PLUGINS": Plugins {
+        "context": Object {},
+        "registry": Object {
+          "dynamicValues": Array [],
+          "postRequestModifiers": Array [],
+          "preRequestModifiers": Array [],
+        },
+      },
+      "REQUESTS": Array [
+        Object {
+          "ALIAS": "get-post",
+          "ENDPOINT": "http://jsonplaceholder.typicode.com",
+          "HEADERS": Object {
+            "authentication": "hello",
+          },
+          "REQUEST": "GET /posts/1",
+        },
+        Object {
+          "ALIAS": "user",
+          "ENDPOINT": "http://jsonplaceholder.typicode.com",
+          "HEADERS": Object {
+            "authentication": "hello",
+            "hello": "world",
+          },
+          "REQUEST": "GET /user",
+        },
+      ],
       "VERSION": 1,
       "configKeys": Array [
         "VERSION",
@@ -120,25 +172,6 @@ Beau {
         "endpoint": "http://jsonplaceholder.typicode.com",
         "version": 1,
       },
-      "requests": Array [
-        Object {
-          "ALIAS": "get-post",
-          "ENDPOINT": "http://jsonplaceholder.typicode.com",
-          "HEADERS": Object {
-            "authentication": "hello",
-          },
-          "REQUEST": "GET /posts/1",
-        },
-        Object {
-          "ALIAS": "user",
-          "ENDPOINT": "http://jsonplaceholder.typicode.com",
-          "HEADERS": Object {
-            "authentication": "hello",
-            "hello": "world",
-          },
-          "REQUEST": "GET /user",
-        },
-      ],
     },
     "list": Array [
       Request {
@@ -159,6 +192,14 @@ Beau {
           },
           "REQUEST": "GET /posts/1",
         },
+        "plugins": Plugins {
+          "context": Object {},
+          "registry": Object {
+            "dynamicValues": Array [],
+            "postRequestModifiers": Array [],
+            "preRequestModifiers": Array [],
+          },
+        },
       },
       Request {
         "ALIAS": "user",
@@ -180,26 +221,14 @@ Beau {
           },
           "REQUEST": "GET /user",
         },
+        "plugins": Plugins {
+          "context": Object {},
+          "registry": Object {
+            "dynamicValues": Array [],
+            "postRequestModifiers": Array [],
+            "preRequestModifiers": Array [],
           },
-    ],
-    "modifiers": Array [],
-    "requests": Array [
-      Object {
-        "ALIAS": "get-post",
-        "ENDPOINT": "http://jsonplaceholder.typicode.com",
-        "HEADERS": Object {
-          "authentication": "hello",
         },
-        "REQUEST": "GET /posts/1",
-      },
-      Object {
-        "ALIAS": "user",
-        "ENDPOINT": "http://jsonplaceholder.typicode.com",
-        "HEADERS": Object {
-          "authentication": "hello",
-          "hello": "world",
-        },
-        "REQUEST": "GET /user",
       },
     ],
   },

src/__tests__/__snapshots__/config.spec.js.snap

@@ -41,7 +41,68 @@ Config {
       "host": "info",
     },
   ],
-  "PLUGINS": Array [],
+  "PLUGINS": Plugins {
+    "context": Object {},
+    "registry": Object {
+      "dynamicValues": Array [],
+      "postRequestModifiers": Array [],
+      "preRequestModifiers": Array [],
+    },
+  },
+  "REQUESTS": Array [
+    Object {
+      "ALIAS": "e1",
+      "ENDPOINT": "http://example.org",
+      "HEADERS": Object {
+        "hello": "mars",
+      },
+      "REQUEST": "GET /e1",
+    },
+    Object {
+      "ALIAS": "com:e2",
+      "ENDPOINT": "http://example.com",
+      "HEADERS": Object {
+        "hello": "world",
+        "world": "hello",
+      },
+      "REQUEST": "GET /e2",
+    },
+    Object {
+      "ALIAS": "com:posts",
+      "ENDPOINT": "http://example.com",
+      "HEADERS": Object {
+        "hello": "world",
+        "world": "hello",
+      },
+      "REQUEST": "GET /posts",
+    },
+    Object {
+      "ALIAS": "net:e3",
+      "ENDPOINT": "http://example.net",
+      "HEADERS": Object {
+        "hello": "world",
+        "world": "bye",
+      },
+      "REQUEST": "GET /e3",
+    },
+    Object {
+      "ALIAS": "net:posts",
+      "ENDPOINT": "http://example.net",
+      "HEADERS": Object {
+        "hello": "world",
+        "world": "bye",
+      },
+      "REQUEST": "GET /posts",
+    },
+    Object {
+      "ALIAS": "info:posts",
+      "ENDPOINT": "http://example.info",
+      "HEADERS": Object {
+        "hello": "mars",
+      },
+      "REQUEST": "GET /posts",
+    },
+  ],
   "VERSION": 1,
   "configKeys": Array [
     "VERSION",
@@ -101,60 +162,6 @@ Config {
       },
     ],
   },
-  "requests": Array [
-    Object {
-      "ALIAS": "e1",
-      "ENDPOINT": "http://example.org",
-      "HEADERS": Object {
-        "hello": "mars",
-      },
-      "REQUEST": "GET /e1",
-    },
-    Object {
-      "ALIAS": "com:e2",
-      "ENDPOINT": "http://example.com",
-      "HEADERS": Object {
-        "hello": "world",
-        "world": "hello",
-      },
-      "REQUEST": "GET /e2",
-    },
-    Object {
-      "ALIAS": "com:posts",
-      "ENDPOINT": "http://example.com",
-      "HEADERS": Object {
-        "hello": "world",
-        "world": "hello",
-      },
-      "REQUEST": "GET /posts",
-    },
-    Object {
-      "ALIAS": "net:e3",
-      "ENDPOINT": "http://example.net",
-      "HEADERS": Object {
-        "hello": "world",
-        "world": "bye",
-      },
-      "REQUEST": "GET /e3",
-    },
-    Object {
-      "ALIAS": "net:posts",
-      "ENDPOINT": "http://example.net",
-      "HEADERS": Object {
-        "hello": "world",
-        "world": "bye",
-      },
-      "REQUEST": "GET /posts",
-    },
-    Object {
-      "ALIAS": "info:posts",
-      "ENDPOINT": "http://example.info",
-      "HEADERS": Object {
-        "hello": "mars",
-      },
-      "REQUEST": "GET /posts",
-    },
-  ],
 }
 `;
 
@@ -169,7 +176,33 @@ Config {
   "ENDPOINT": "http://jsonplaceholder.typicode.com",
   "ENVIRONMENT": Object {},
   "HOSTS": Array [],
-  "PLUGINS": Array [],
+  "PLUGINS": Plugins {
+    "context": Object {},
+    "registry": Object {
+      "dynamicValues": Array [],
+      "postRequestModifiers": Array [],
+      "preRequestModifiers": Array [],
+    },
+  },
+  "REQUESTS": Array [
+    Object {
+      "ALIAS": "get-post",
+      "ENDPOINT": "http://jsonplaceholder.typicode.com",
+      "HEADERS": Object {
+        "authentication": "hello",
+      },
+      "REQUEST": "GET /posts/1",
+    },
+    Object {
+      "ALIAS": "user",
+      "ENDPOINT": "http://jsonplaceholder.typicode.com",
+      "HEADERS": Object {
+        "authentication": "hello",
+        "hello": "world",
+      },
+      "REQUEST": "GET /user",
+    },
+  ],
   "VERSION": 1,
   "configKeys": Array [
     "VERSION",
@@ -205,24 +238,5 @@ Config {
     "endpoint": "http://jsonplaceholder.typicode.com",
     "version": 1,
   },
-  "requests": Array [
-    Object {
-      "ALIAS": "get-post",
-      "ENDPOINT": "http://jsonplaceholder.typicode.com",
-      "HEADERS": Object {
-        "authentication": "hello",
-      },
-      "REQUEST": "GET /posts/1",
-    },
-    Object {
-      "ALIAS": "user",
-      "ENDPOINT": "http://jsonplaceholder.typicode.com",
-      "HEADERS": Object {
-        "authentication": "hello",
-        "hello": "world",
-      },
-      "REQUEST": "GET /user",
-    },
-  ],
 }
 `;

src/__tests__/__snapshots__/plugins.spec.js.snap

@@ -0,0 +1,49 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`Beau's plugin system Dynamic Values should look for dynamic values executing and replacing them 1`] = `
+Object {
+  "body": "Hello World",
+  "request": Object {
+    "body": undefined,
+    "endpoint": "http://example.com/hello/3",
+    "headers": Object {
+      "count": "3",
+      "preRequestModifier": true,
+    },
+  },
+  "response": Object {
+    "body": "Hello World",
+    "headers": Array [],
+    "status": 200,
+  },
+}
+`;
+
+exports[`Beau's plugin system Request Modifiers should modify the request and response using modifiers. 1`] = `
+Object {
+  "body": "Hello World",
+  "request": Object {
+    "body": undefined,
+    "endpoint": "http://example.com/user",
+    "headers": Object {
+      "preRequestModifier": true,
+    },
+  },
+  "response": Object {
+    "body": "Hello World",
+    "headers": Array [],
+    "status": 200,
+  },
+}
+`;
+
+exports[`Beau's plugin system shouldn't do anything when given an empty array. 1`] = `
+Plugins {
+  "context": Object {},
+  "registry": Object {
+    "dynamicValues": Array [],
+    "postRequestModifiers": Array [],
+    "preRequestModifiers": Array [],
+  },
+}
+`;

src/__tests__/__snapshots__/request.spec.js.snap

@@ -35,22 +35,3 @@ Object {
   },
 }
 `;
-
-exports[`Request should use modifiers 1`] = `
-Array [
-  Array [
-    Object {
-      "endpoint": "http://martianwabbit.com/user",
-      "headers": Object {},
-      "method": "GET",
-      "payload": Object {},
-      "query": Object {},
-    },
-    Object {
-      "alias": "show",
-      "endpoint": "http://martianwabbit.com",
-      "request": "GET /user",
-    },
-  ],
-]
-`;

src/__tests__/__snapshots__/requestList.spec.js.snap

@@ -3,7 +3,6 @@
 exports[`RequestList should execute requests by alias. 1`] = `
 Object {
   "body": "{\\"hello\\": \\"world\\"}",
-  "changed": true,
   "request": Object {
     "body": Object {
       "lastname": "Diaz",

src/__tests__/config.spec.js

@@ -31,7 +31,7 @@ describe('Config', () => {
         `);
 
     const config = new Config(doc);
-    expect(Object.keys(config.requests).length).toBe(4);
+    expect(Object.keys(config.REQUESTS).length).toBe(4);
   });
 
   it('should set up defaults for all requests', () => {
@@ -53,7 +53,7 @@ describe('Config', () => {
     const config = new Config(doc);
 
     expect(config).toMatchSnapshot();
-    Object.values(config.requests).forEach(r => {
+    Object.values(config.REQUESTS).forEach(r => {
       expect(r.HEADERS.authentication).toMatch('hello');
     });
   });
@@ -115,8 +115,8 @@ describe('Config', () => {
 
     let config = new Config(doc);
 
-    expect(config.requests[0].ALIAS).toBe('test1:posts');
+    expect(config.REQUESTS[0].ALIAS).toBe('test1:posts');
-    expect(config.requests[1].ALIAS).toBe('test2:posts');
+    expect(config.REQUESTS[1].ALIAS).toBe('test2:posts');
   });
 
   it(`should throw if host doesn't have a host key`, () => {
@@ -153,6 +153,6 @@ describe('Config', () => {
         `);
 
     let config = new Config(doc);
-    expect(config.requests[0].HEADERS.hello).toBe(1);
+    expect(config.REQUESTS[0].HEADERS.hello).toBe(1);
   });
 });

src/__tests__/plugins.spec.js

@@ -0,0 +1,94 @@
+const yaml = require('js-yaml');
+const Config = require('../config');
+const Plugins = require('../plugins');
+const Request = require('../request');
+const RequestCache = require('../requestCache');
+
+describe(`Beau's plugin system`, () => {
+    let config;
+    let request;
+    let plugins;
+
+    beforeEach(() => {
+        const doc = yaml.safeLoad(`
+            version: 1
+            endpoint: 'http://example.com'
+
+            plugins:
+                - Modifiers:
+                    data: hi
+                - DynamicValues
+
+            GET /posts/$[add(1, 1)]: get-post
+        `);
+
+        config = new Config(doc);
+        plugins = config.PLUGINS;
+    });
+
+    it('should load all plugins', () => {
+        expect(plugins.registry.preRequestModifiers.length).toBe(1);
+        expect(plugins.registry.postRequestModifiers.length).toBe(1);
+        expect(plugins.registry.dynamicValues.length).toBe(1);
+    });
+
+    it(`should throw if given an invalid configuration`, () => {
+        expect(() => new Plugins([{ test1: true, test2: true }])).toThrow();
+    });
+
+    it(`shouldn't do anything when given an empty array.`, () => {
+        expect(new Plugins()).toMatchSnapshot();
+    });
+
+    describe(`Request Modifiers`, () => {
+        beforeEach(() => {
+            request = new Request(
+                {
+                    request: 'POST /user',
+                    endpoint: 'http://example.com',
+                    alias: 'update'
+                },
+                plugins
+            );
+        });
+
+        it(`should modify the request and response using modifiers.`, async () => {
+            await expect(request.exec()).resolves.toMatchSnapshot();
+        });
+    });
+
+    describe(`Dynamic Values`, () => {
+        beforeEach(() => {
+            request = new Request(
+                {
+                    request: 'PATCH /hello/$[add(1, 2)]',
+                    endpoint: 'http://example.com',
+                    alias: 'say-hello',
+                    headers: {
+                        count: '$[add(1, $value2)]'
+                    }
+                },
+                plugins
+            );
+        });
+
+        it(`should look for dynamic values executing and replacing them`, async () => {
+            let cache = new RequestCache();
+            cache.add('$value2', '2');
+
+            let req = await request.exec(cache);
+
+            expect(req).toHaveProperty('request.headers.count', '3');
+            expect(req).toMatchSnapshot();
+        });
+
+        it(`should throw when calling an undefined dynamic value`, async () => {
+            request = new Request({
+                request: 'POST /hello/$[notAvailable(1, 2)]',
+                alias: 'say-hello'
+            });
+
+            await expect(request.exec()).rejects.toThrow();
+        });
+    });
+});

src/__tests__/request.spec.js

@@ -64,7 +64,7 @@ describe('Request', () => {
 	});
 
 	it('should execute a request', async () => {
-		await expect(request.exec([], cache)).resolves.toMatchSnapshot();
+		await expect(request.exec(cache)).resolves.toMatchSnapshot();
 		await expect(
 			requestWithoutDependencies.exec()
 		).resolves.toMatchSnapshot();
@@ -74,21 +74,4 @@ describe('Request', () => {
 		requestPromiseNativeMock.fail = true;
 		await expect(requestWithoutDependencies.exec()).rejects.toThrow(Error);
 	});
-
-	it('should use modifiers', async () => {
-		const preRequest = jest.fn();
-		const withPreRequest = [{ preRequest }];
-
-		const notCalled = jest.fn();
-		const nonModifiers = [{ notCalled }];
-
-		await requestWithoutDependencies.exec(withPreRequest);
-
-		expect(preRequest).toHaveBeenCalled();
-		expect(preRequest.mock.calls).toMatchSnapshot();
-
-		await requestWithoutDependencies.exec(nonModifiers);
-
-		expect(notCalled).not.toHaveBeenCalled();
-	});
 });

src/__tests__/requestList.spec.js

@@ -12,17 +12,6 @@ describe('RequestList', () => {
 	const doc = {
 		ENDPOINT: endpoint,
 		ENVIRONMENT: env,
-		PLUGINS: [
-			{
-				'beau-jwt': {
-					data: {
-						secret: 'shhh.',
-						userId: 412
-					}
-				}
-			},
-			'beau-document'
-		],
 		'GET /post': { alias: 'get-posts' },
 		'POST /user': {
 			alias: 'user',
@@ -38,7 +27,12 @@ describe('RequestList', () => {
 		requestPromiseNativeMock.fail = false;
 
 		let config = new Config(doc);
-		requests = new RequestList(config.requests, config);
+		requests = new RequestList(config);
+	});
+
+	it('should allow an empty request list', () => {
+		requests = new RequestList();
+		expect(requests.list.length).toBe(0);
 	});
 
 	it('should load valid requests', () => {
@@ -49,12 +43,6 @@ describe('RequestList', () => {
 		requests.fetchDependencies(['get-posts']);
 	});
 
-	it('should load plugins', () => {
-		const pluginLessList = new RequestList();
-		expect(requests.modifiers.length).toBe(2);
-		expect(pluginLessList.modifiers.length).toBe(0);
-	});
-
 	it('should execute requests by alias.', async () => {
 		await expect(requests.execByAlias('user')).resolves.toMatchSnapshot();
 	});
@@ -83,6 +71,6 @@ describe('RequestList', () => {
 			}
 		});
 
-		expect(() => new RequestList(config.requests, config)).toThrow();
+		expect(() => new RequestList(config, config)).toThrow();
 	});
 });

src/beau.js

@@ -4,8 +4,7 @@ const Config = require('./config');
 class Beau {
 	constructor(doc, env = {}) {
 		this.config = new Config(doc, env);
-
+		this.requests = new RequestList(this.config);
-		this.requests = new RequestList(this.config.requests, this.config);
 	}
 }
 

src/config.js

@@ -1,5 +1,6 @@
 const deepMerge = require('deepmerge');
 const { requestRegex, UpperCaseKeys } = require('./shared');
+const Plugins = require('./plugins');
 
 class Config {
 	constructor(doc, env = {}) {
@@ -23,7 +24,7 @@ class Config {
 
 		this.ENVIRONMENT = deepMerge(this.ENVIRONMENT, env);
 
-		this.requests = [];
+		this.REQUESTS = [];
 
 		this.loadRequests(doc, {
 			DEFAULTS: this.DEFAULTS,
@@ -31,6 +32,8 @@ class Config {
 		});
 
 		this.loadHosts(this.HOSTS, config);
+
+		this.PLUGINS = new Plugins(this.PLUGINS);
 	}
 
 	loadHosts(hosts, rootConfig) {
@@ -77,7 +80,7 @@ class Config {
 				return deepMerge(defaults, request);
 			});
 
-		this.requests = this.requests.concat(requests);
+		this.REQUESTS = this.REQUESTS.concat(requests);
 	}
 
 	loadConfig(host) {

src/plugins.js

@@ -0,0 +1,92 @@
+const vm = require('vm');
+const requireg = require('requireg');
+const deepmerge = require('deepmerge');
+const { toKebabCase, dynamicValueRegex, replaceInObject } = require('./shared');
+
+class Plugins {
+	constructor(plugins = []) {
+		this.registry = {
+			preRequestModifiers: [],
+			postRequestModifiers: [],
+			dynamicValues: []
+		};
+
+		this.context = {};
+
+		plugins.forEach(plugin => this.loadPlugin(plugin));
+	}
+
+	loadPlugin(plugin) {
+		let name = plugin;
+		let settings = {};
+
+		if (typeof plugin === 'object') {
+			let keys = Object.keys(plugin);
+
+			if (keys.length !== 1) {
+				throw new Error(`Plugin items should contain only one key.`);
+			}
+
+			name = Object.keys(plugin)[0];
+			settings = plugin[name];
+		}
+
+		plugin = requireg(`./beau-${toKebabCase(name)}`);
+		new plugin(this, settings);
+	}
+
+	executeModifier(modifier, obj, orig) {
+		let result = deepmerge({}, obj);
+
+		this.registry[modifier].forEach(
+			modifier => (result = modifier(result, orig))
+		);
+
+		return result;
+	}
+
+	execPreRequestModifiers(request, originalRequest) {
+		return this.executeModifier(
+			'preRequestModifiers',
+			request,
+			originalRequest
+		);
+	}
+
+	execPostRequestModifiers(response, originalRequest) {
+		return this.executeModifier(
+			'postRequestModifiers',
+			response,
+			originalRequest
+		);
+	}
+
+	replaceDynamicValues(obj) {
+		return replaceInObject(obj, val => {
+			try {
+				return val.replace(dynamicValueRegex, (match, call) => {
+					return vm.runInContext(call, this.context);
+				});
+			} catch (e) {
+				throw new Error(`DynamicValue: ` + e);
+			}
+		});
+	}
+
+	addPreRequestModifier(modifier) {
+		this.registry.preRequestModifiers.push(modifier);
+	}
+
+	addPostRequestModifier(modifier) {
+		this.registry.postRequestModifiers.push(modifier);
+	}
+
+	defineDynamicValue(name, fn) {
+		this.registry.dynamicValues.push({ name, fn });
+		this.context[name] = fn;
+
+		vm.createContext(this.context);
+	}
+}
+
+module.exports = Plugins;

src/request.js

@@ -1,4 +1,8 @@
 const request = require('request-promise-native');
+const RequestList = require('./requestList');
+const RequestCache = require('./requestCache');
+const Plugins = require('./plugins');
+
 const {
 	httpVerbs,
 	requestRegex,
@@ -6,12 +10,11 @@ const {
 	UpperCaseKeys,
 	removeOptionalKeys
 } = require('./shared');
-const RequestList = require('./requestList');
-const RequestCache = require('./requestCache');
 
 class Request {
-	constructor(req) {
+	constructor(req, plugins = new Plugins()) {
 		this.originalRequest = req;
+		this.plugins = plugins;
 
 		const {
 			REQUEST,
@@ -50,13 +53,15 @@ class Request {
 	}
 
 	findDependencies(request, set = new Set()) {
-		if (typeof request === 'object') {
+		let type = typeof request;
-			const keys = Object.keys(request).filter(key => key !== 'ALIAS');
 
-			keys.forEach(key => {
+		if (type === 'object') {
+			Object.keys(request)
+				.filter(key => key !== 'ALIAS')
+				.forEach(key => {
 					set = this.findDependencies(request[key], set);
 				});
-		} else if (typeof request === 'string') {
+		} else if (type === 'string') {
 			const matches = request.match(replacementRegex) || [];
 			const deps = matches.map(m => m.split('.')[0].substring(1));
 
@@ -66,21 +71,22 @@ class Request {
 		return set;
 	}
 
-	async exec(modifiers = [], cache = new RequestCache()) {
+	async exec(cache = new RequestCache()) {
-		const settings = {
+		let settings = cache.parse({
-			endpoint: cache.parse(this.ENDPOINT),
+			endpoint: this.ENDPOINT,
 			method: this.VERB,
-			headers: cache.parse(this.HEADERS),
+			headers: this.HEADERS,
-			query: cache.parse(this.PARAMS),
+			query: this.PARAMS,
-			payload: cache.parse(this.PAYLOAD)
+			payload: this.PAYLOAD
-		};
-
-		modifiers.forEach(mod => {
-			if (typeof mod.preRequest !== 'undefined') {
-				mod.preRequest(settings, this.originalRequest);
-			}
 		});
 
+		settings = this.plugins.replaceDynamicValues(settings);
+
+		settings = this.plugins.execPreRequestModifiers(
+			settings,
+			this.originalRequest
+		);
+
 		try {
 			const response = await request(
 				removeOptionalKeys(
@@ -100,7 +106,7 @@ class Request {
 				)
 			);
 
-			const results = {
+			let results = {
 				request: {
 					headers: response.request.headers,
 					body: response.request.body,
@@ -114,11 +120,16 @@ class Request {
 				body: response.body
 			};
 
+			results = this.plugins.execPostRequestModifiers(
+				results,
+				this.originalRequest
+			);
+
 			cache.add(`$${this.ALIAS}`, results);
 
 			return results;
 		} catch ({ error }) {
-			throw new Error(error);
+			throw new Error(`Request Error: ` + error);
 		}
 	}
 }

src/requestCache.js

@@ -1,4 +1,4 @@
-const { replacementRegex } = require('./shared');
+const { replacementRegex, replaceInObject } = require('./shared');
 
 class RequestCache {
 	constructor() {
@@ -27,26 +27,13 @@ class RequestCache {
 	}
 
 	parse(item) {
-		let type = typeof item;
-
-		if (type === 'undefined') {
-			return {};
-		}
-
 		if (item === null) {
 			return null;
 		}
 
-		if (type === 'string') {
+		return replaceInObject(item, item =>
-			return item.replace(replacementRegex, key => this.get(key));
+			item.replace(replacementRegex, key => this.get(key))
-		}
+		);
-
-		if (type === 'object') {
-			Object.keys(item).forEach(k => (item[k] = this.parse(item[k])));
-			return item;
-		}
-
-		return item;
 	}
 }
 

src/requestList.js

@@ -1,14 +1,12 @@
 const Request = require('./request');
 const RequestCache = require('./requestCache');
 const httpVerbs = require('./shared').httpVerbs;
-const requireg = require('requireg');
 
 class RequestList {
-	constructor(requests = [], config = {}) {
+	constructor(config = { REQUESTS: [] }) {
 		this.config = config;
-		this.requests = requests;
+		this.REQUESTS = config.REQUESTS;
 
-		this.modifiers = this.loadPlugins();
 		this.list = this.loadRequests();
 		this.cache = new RequestCache();
 
@@ -17,7 +15,7 @@ class RequestList {
 
 	async execByAlias(alias) {
 		if (this.cache.exists(`$${alias}`)) {
-			return this.applyPostResponseModifiers(this.cache.get(`$${alias}`));
+			return this.cache.get(`$${alias}`);
 		}
 
 		const request = this.list.find(r => r.ALIAS === alias);
@@ -28,9 +26,8 @@ class RequestList {
 
 		try {
 			await this.fetchDependencies(Array.from(request.DEPENDENCIES));
-			const response = await request.exec(this.modifiers, this.cache);
+			const response = await request.exec(this.cache);
-
+			return response;
-			return this.applyPostResponseModifiers(response);
 		} catch (reason) {
 			throw new Error(
 				`Request: ${request.VERB} ${
@@ -49,10 +46,9 @@ class RequestList {
 
 	loadRequests() {
 		let requests = [];
-		this.requests.forEach(request => {
+		this.REQUESTS.forEach(request => {
 			try {
-				let r = new Request(request);
+				requests.push(new Request(request, this.config.PLUGINS));
-				requests.push(r);
 			} catch (e) {
 				throw new Error(`${request.request} was ignored: ${e}`);
 			}
@@ -60,34 +56,6 @@ class RequestList {
 
 		return requests;
 	}
-
-	loadPlugins() {
-		if (typeof this.config.PLUGINS === 'undefined') {
-			return [];
-		}
-
-		return this.config.PLUGINS.map(plugin => {
-			let name = plugin;
-			let settings = null;
-
-			if (typeof plugin === 'object') {
-				name = Object.keys(plugin)[0];
-				settings = plugin[name];
-			}
-
-			return new (requireg(name))(settings);
-		});
-	}
-
-	applyPostResponseModifiers(response) {
-		this.modifiers.forEach(mod => {
-			if (typeof mod.postResponse !== 'undefined') {
-				mod.postResponse(response);
-			}
-		});
-
-		return response;
-	}
 }
 
 module.exports = RequestList;

src/shared.js

@@ -11,7 +11,8 @@ const httpVerbs = [
 ];
 
 const requestRegex = new RegExp(`(${httpVerbs.join('|')})\\s(.*)`, 'i');
-const replacementRegex = /\$([a-zA-Z\.\d\-\_\/\\\:]*)/g;
+const replacementRegex = /\$([a-zA-Z\.\d\-\_\/\\\:]+)/g;
+const dynamicValueRegex = /\$\[(\w+\((?:.|[\n\r])+?\))\]/g;
 
 const UpperCaseKeys = function(obj) {
 	let result = {};
@@ -37,10 +38,43 @@ const removeOptionalKeys = function(obj, optionalValues) {
 	return result;
 };
 
+const toKebabCase = function(str) {
+	return str
+		.trim()
+		.replace(/([a-z])([A-Z])/g, '$1-$2')
+		.replace(/\s+/g, '-')
+		.toLowerCase();
+};
+
+const replaceInObject = function(obj, fn) {
+	if (obj === null) {
+		return null;
+	}
+
+	let type = typeof obj;
+
+	if (type === 'undefined') {
+		return {};
+	}
+
+	if (type === 'string') {
+		return fn(obj);
+	}
+
+	if (type === 'object') {
+		Object.keys(obj).forEach(k => (obj[k] = replaceInObject(obj[k], fn)));
+	}
+
+	return obj;
+};
+
 module.exports = {
 	httpVerbs,
 	requestRegex,
 	replacementRegex,
+	dynamicValueRegex,
 	UpperCaseKeys,
-	removeOptionalKeys
+	removeOptionalKeys,
+	toKebabCase,
+	replaceInObject
 };