add formData capability

package-lock.json

@@ -102,6 +102,14 @@
         "@types/chai": "*"
       }
     },
+    "@types/form-data": {
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/@types/form-data/-/form-data-2.2.1.tgz",
+      "integrity": "sha512-JAMFhOaHIciYVh8fb5/83nmuO/AHwmto+Hq7a9y8FzLDcC1KCU344XDOMEmahnrTFlHjgh4L0WJFczNIX2GxnQ==",
+      "requires": {
+        "@types/node": "*"
+      }
+    },
     "@types/fs-extra": {
       "version": "5.0.4",
       "resolved": "https://registry.npmjs.org/@types/fs-extra/-/fs-extra-5.0.4.tgz",
@@ -114,8 +122,7 @@
     "@types/node": {
       "version": "10.5.2",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-10.5.2.tgz",
-      "integrity": "sha512-m9zXmifkZsMHZBOyxZWilMwmTlpC8x5Ty360JKTiXvlXZfBWYpsg9ZZvP/Ye+iZUh+Q+MxDLjItVTWIsfwz+8Q==",
-      "dev": true
+      "integrity": "sha512-m9zXmifkZsMHZBOyxZWilMwmTlpC8x5Ty360JKTiXvlXZfBWYpsg9ZZvP/Ye+iZUh+Q+MxDLjItVTWIsfwz+8Q=="
     },
     "@types/vinyl": {
       "version": "2.0.2",
@@ -153,6 +160,11 @@
       "integrity": "sha512-jgsaNduz+ndvGyFt3uSuWqvy4lCnIJiovtouQN5JZHOKCS2QuhEdbcQHFhVksz2N2U9hXJo8odG7ETyWlEeuDw==",
       "dev": true
     },
+    "asynckit": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
+      "integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k="
+    },
     "balanced-match": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
@@ -255,6 +267,14 @@
         "readable-stream": "^2.3.5"
       }
     },
+    "combined-stream": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.6.tgz",
+      "integrity": "sha1-cj599ugBrFYTETp+RFqbactjKBg=",
+      "requires": {
+        "delayed-stream": "~1.0.0"
+      }
+    },
     "concat-map": {
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
@@ -286,6 +306,11 @@
         "object-keys": "^1.0.8"
       }
     },
+    "delayed-stream": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
+      "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk="
+    },
     "diff": {
       "version": "3.5.0",
       "resolved": "https://registry.npmjs.org/diff/-/diff-3.5.0.tgz",
@@ -354,6 +379,16 @@
       "integrity": "sha1-C+4AUBiusmDQo6865ljdATbsG5k=",
       "dev": true
     },
+    "form-data": {
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/form-data/-/form-data-2.3.2.tgz",
+      "integrity": "sha1-SXBJi+YEwgwAXU9cI67NIda0kJk=",
+      "requires": {
+        "asynckit": "^0.4.0",
+        "combined-stream": "1.0.6",
+        "mime-types": "^2.1.12"
+      }
+    },
     "fs-extra": {
       "version": "6.0.1",
       "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-6.0.1.tgz",
@@ -520,6 +555,19 @@
       "integrity": "sha512-0Dab5btKVPhibSalc9QGXb559ED7G7iLjFXBaj9Wq8O3vorueR5K5jaE3hkG6ZQINyhA/JgG6Qk4qdFQjsYV6g==",
       "dev": true
     },
+    "mime-db": {
+      "version": "1.35.0",
+      "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.35.0.tgz",
+      "integrity": "sha512-JWT/IcCTsB0Io3AhWUMjRqucrHSPsSf2xKLaRldJVULioggvkJvggZ3VXNNSRkCddE6D+BUI4HEIZIA2OjwIvg=="
+    },
+    "mime-types": {
+      "version": "2.1.19",
+      "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.19.tgz",
+      "integrity": "sha512-P1tKYHVSZ6uFo26mtnve4HQFE3koh1UWVkp8YUC+ESBHe945xWSoXuHHiGarDqcEZ+whpCDnlNw5LON0kLo+sw==",
+      "requires": {
+        "mime-db": "~1.35.0"
+      }
+    },
     "minimatch": {
       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",

package.json

@@ -23,7 +23,9 @@
   },
   "homepage": "https://gitlab.com/pushrocks/smartrequest#README",
   "dependencies": {
-    "@pushrocks/smartpromise": "^2.0.5"
+    "@pushrocks/smartpromise": "^2.0.5",
+    "@types/form-data": "^2.2.1",
+    "form-data": "^2.3.2"
   },
   "devDependencies": {
     "@gitzone/tsrun": "^1.1.9",

ts/smartrequest.formdata.ts

@@ -0,0 +1,62 @@
+import * as plugins from "./smartrequest.plugins";
+import * as interfaces from "./smartrequest.interfaces";
+import { request } from "./smartrequest.request";
+
+/**
+ * the interfae for FormFieldData
+ */
+export interface IFormField {
+  name: string;
+  type: "string" | "filePath" | "Buffer";
+  payload: string;
+}
+
+/**
+ * retrieve the FormData headers in reliable way
+ * @param formDataArg
+ */
+const getFormDataHeaders = (formDataArg: plugins.formData) => {
+  const done = plugins.smartpromise.defer();
+  formDataArg.getLength((err, length) => {
+    if (err) {
+      done.reject(err);
+    }
+    const headers = Object.assign(
+      { "Content-Length": length },
+      formDataArg.getHeaders()
+    );
+    done.resolve(headers);
+  });
+  return done.promise;
+};
+
+const appendFormField = async (
+  formDataArg: plugins.formData,
+  formDataField: IFormField
+) => {
+  if (formDataField.type === "filePath") {
+    formDataArg.append("type", "image");
+    let fileData = plugins.fs.createReadStream(
+      plugins.path.join(__dirname, formDataField.payload)
+    );
+    formDataArg.append("media", fileData, "upload.pdf");
+  }
+};
+
+export const postFormData = async (
+  urlArg: string,
+  optionsArg: interfaces.ISmartRequestOptions = {},
+  payloadArg: IFormField[]
+) => {
+  const form = new plugins.formData();
+  for (const formField of payloadArg) {
+    await appendFormField(form, formField);
+  }
+  const pipeLog: any = async (...args) => {
+    console.log(args);
+  };
+  const requestOptions = Object.assign({}, optionsArg, { requestBody: form });
+
+  // lets fire the actual request for sending the formdata
+  request(urlArg, requestOptions);
+};

ts/smartrequest.plugins.ts

@@ -1,7 +1,10 @@
-import * as url from 'url';
+import * as formData from 'form-data';
+import * as fs from 'fs';
 import * as http from 'http';
 import * as https from 'https';
+import * as path from 'path';
+import * as url from 'url';
 
 import * as smartpromise from '@pushrocks/smartpromise';
 
-export { url, http, https, smartpromise };
+export {formData, http, https, fs, path, url, smartpromise };

ts/smartrequest.request.ts

@@ -86,7 +86,28 @@ export let request = async (
 
 
   // lets perform the actual request
-  let request = requestModule.request(optionsArg, async response => {
+  let request = requestModule.request(optionsArg);
+
+  // lets write the requestBody
+  if (optionsArg.requestBody) {
+    if (
+      typeof optionsArg.requestBody !== "string"
+      && !(optionsArg.requestBody instanceof plugins.formData)
+    ) {
+      optionsArg.requestBody = JSON.stringify(optionsArg.requestBody);
+      request.write(optionsArg.requestBody);
+    } else if (optionsArg.requestBody instanceof plugins.formData) {
+      optionsArg.requestBody.pipe(request);
+    }
+  }
+
+  // lets handle an error
+  request.on("error", e => {
+    console.error(e);
+  });
+
+  // lets handle the response
+  request.on("response", async response => {
     if (streamArg) {
       done.resolve(response);
     } else {
@@ -95,16 +116,6 @@ export let request = async (
     }
   });
 
-  // lets write the requestBody
-  if (optionsArg.requestBody) {
-    if (typeof optionsArg.requestBody !== "string") {
-      optionsArg.requestBody = JSON.stringify(optionsArg.requestBody);
-    }
-    request.write(optionsArg.requestBody);
-  }
-  request.on("error", e => {
-    console.error(e);
-  });
   request.end();
 
   const result = await done.promise;