feat: support text-plain response sample

closes #270

demo/swagger.yaml

@@ -619,6 +619,7 @@ paths:
           examples:
             application/json: OK
             application/xml: <message> OK </message>
+            text/plain: OK
           headers:
             X-Rate-Limit:
               type: integer

lib/components/SchemaSample/schema-sample.html

@@ -20,7 +20,15 @@
       <div class="action-buttons">
         <span copy-button [copyText]="xmlSample" class="hint--top-left hint--inversed"> <a>Copy</a> </span>
       </div>
-      <pre class="xml-sample" [innerHtml]="xmlSample | prism:'xml'"></pre>
+      <pre class="response-sample" [innerHtml]="xmlSample | prism:'xml'"></pre>
+    </div>
+  </tab>
+  <tab tabTitle="text/plain" *ngIf="textSample">
+    <div class="snippet">
+      <div class="action-buttons">
+        <span copy-button [copyText]="xmlSample" class="hint--top-left hint--inversed"> <a>Copy</a> </span>
+      </div>
+      <pre class="response-sample">{{textSample}}</pre>
     </div>
   </tab>
 </tabs>

lib/components/SchemaSample/schema-sample.scss

@@ -131,7 +131,7 @@ pre {
     padding-left: 6px;
   }
 
-  .redoc-json, .xml-sample {
+  .redoc-json, .response-sample {
       overflow-x: auto;
       padding: 20px;
       border-radius: $border-radius*2;

lib/components/SchemaSample/schema-sample.ts

@@ -6,7 +6,7 @@ import * as OpenAPISampler from 'openapi-sampler';
 import JsonPointer from '../../utils/JsonPointer';
 import { BaseComponent, SpecManager } from '../base';
 import { SchemaNormalizer } from '../../services/schema-normalizer.service';
-import { getJsonLikeSample, getXmlLikeSample} from '../../utils/helpers';
+import { getJsonLikeSample, getXmlLikeSample, getTextLikeSample } from '../../utils/helpers';
 
 @Component({
   selector: 'schema-sample',
@@ -21,6 +21,7 @@ export class SchemaSample extends BaseComponent implements OnInit {
   element: any;
   sample: any;
   xmlSample: string;
+  textSample: string;
   enableButtons: boolean = false;
 
   private _normalizer:SchemaNormalizer;
@@ -51,10 +52,8 @@ export class SchemaSample extends BaseComponent implements OnInit {
       base.examples = requestExamples;
     }
 
-    let xmlLikeSample = base.examples && getXmlLikeSample(base.examples);
-    if (xmlLikeSample) {
-      this.xmlSample = xmlLikeSample;
-    }
+    this.xmlSample = base.examples && getXmlLikeSample(base.examples);
+    this.textSample = base.examples && getTextLikeSample(base.examples);
 
     let jsonLikeSample = base.examples && getJsonLikeSample(base.examples);
     if (jsonLikeSample) {

lib/utils/helpers.ts

@@ -142,6 +142,10 @@ export function isXmlLike(contentType: string): boolean {
   return contentType.search(/xml/i) !== -1;
 }
 
+export function isTextLike(contentType: string): boolean {
+  return contentType.search(/text\/plain/i) !== -1;
+}
+
 export function getJsonLikeSample(samples: Object = {}) {
   const jsonLikeKeys = Object.keys(samples).filter(isJsonLike);
 
@@ -161,3 +165,14 @@ export function getXmlLikeSample(samples: Object = {}) {
 
   return samples[xmlLikeKeys[0]];
 }
+
+
+export function getTextLikeSample(samples: Object = {}) {
+  const textLikeKeys = Object.keys(samples).filter(isTextLike);
+
+  if (!textLikeKeys.length) {
+    return false;
+  }
+
+  return samples[textLikeKeys[0]];
+}