refactor(confighttp): HTML page handlers into generic getPage function (#4645)

docs/api.js

@@ -1,15 +1,21 @@
 function generateExamples(endpoint, method, body = null) {
   let curlBodyString = '';
+  let curlHeaderString = '';
   let psBodyString = '';
+  let psContentTypeString = '';
+  let psBodyParams = '';
 
   if (body) {
     const curlJsonString = JSON.stringify(body).replace(/"/g, '\\"');
     curlBodyString = ` -d "${curlJsonString}"`;
+    curlHeaderString = ' -H "Content-Type: application/json"';
     psBodyString = `-Body (ConvertTo-Json ${JSON.stringify(body)})`;
+    psContentTypeString = '-ContentType \'application/json\'';
+    psBodyParams = ' `\n  ' + psBodyString + ' `\n  ' + psContentTypeString;
   }
 
   return {
-    cURL: `curl -u user:pass -H "Content-Type: application/json" -X ${method.trim()} -k https://localhost:47990${endpoint.trim()}${curlBodyString}`,
+    cURL: `curl -u user:pass${curlHeaderString} -X ${method.trim()} -k https://localhost:47990${endpoint.trim()}${curlBodyString}`,
     Python: `import json
 import requests
 from requests.auth import HTTPBasicAuth
@@ -22,19 +28,18 @@ requests.${method.trim().toLowerCase()}(
     JavaScript: `fetch('https://localhost:47990${endpoint.trim()}', {
   method: '${method.trim()}',
   headers: {
-    'Authorization': 'Basic ' + btoa('user:pass'),
-    'Content-Type': 'application/json',
+    'Authorization': 'Basic ' + btoa('user:pass'),${body ? `\n    'Content-Type': 'application/json',` : ''}
   }${body ? `,\n  body: JSON.stringify(${JSON.stringify(body)}),` : ''}
 })
 .then(response => response.json())
 .then(data => console.log(data));`,
     PowerShell: `Invoke-RestMethod \`
   -SkipCertificateCheck \`
-  -ContentType 'application/json' \`
   -Uri 'https://localhost:47990${endpoint.trim()}' \`
   -Method ${method.trim()} \`
-  -Headers @{Authorization = 'Basic ' + [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes('user:pass'))}
-  ${psBodyString}`
+  -Headers @{
+    Authorization = 'Basic ' + [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes('user:pass'))
+  }${psBodyParams}`
   };
 }