add validation function

Author: i-hardy

dotcom-rendering/src/model/validate.ts

@@ -15,13 +15,15 @@ import footballMatchListPageSchema from '../frontend/schemas/feFootballMatchList
 import footballMatchPageSchema from '../frontend/schemas/feFootballMatchPage.json';
 import footballTablesPageSchema from '../frontend/schemas/feFootballTablesPage.json';
 import frontSchema from '../frontend/schemas/feFront.json';
+import hostedContentSchema from '../frontend/schemas/feHostedContent.json';
 import tagPageSchema from '../frontend/schemas/feTagPage.json';
 import type { Block } from '../types/blocks';
 import type { FEEditionsCrosswords } from '../types/editionsCrossword';
 import type { FENewslettersPageType } from '../types/newslettersPage';
 import blockSchema from './block-schema.json';
 import editionsCrosswordSchema from './editions-crossword-schema.json';
 import newslettersPageSchema from './newsletter-page-schema.json';
+import { FEHostedContent } from 'src/frontend/feHostedContent';
 
 const options: Options = {
 	verbose: false,
@@ -56,6 +58,7 @@ const validateCricketMatchPage = ajv.compile<FECricketMatchPage>(
 const validateFootballMatchPage = ajv.compile<FEFootballMatchPage>(
 	footballMatchPageSchema,
 );
+const validateHostedContent = ajv.compile<FEHostedContent>(hostedContentSchema);
 
 export const validateAsFEArticle = (data: unknown): FEArticle => {
 	if (validateArticle(data)) return data;
@@ -186,3 +189,15 @@ export const validateAsFootballMatchPageType = (
             ${JSON.stringify(validateFootballMatchPage.errors, null, 2)}`,
 	);
 };
+
+export const validateAsHostedContent = (data: unknown): FEHostedContent => {
+	if (validateHostedContent(data)) return data;
+
+	const url =
+		isObject(data) && isString(data.webURL) ? data.webURL : 'unknown url';
+
+	throw new TypeError(
+		`Unable to validate request body for url ${url}.\n
+            ${JSON.stringify(validateArticle.errors, null, 2)}`,
+	);
+};