feat(helper): ✨ add function getParamString to make param construct…

…ion easier to read and add to

src/helpers/books/audible/ApiHelper.ts

@@ -15,8 +15,18 @@ class ApiHelper {
 		const helper = new SharedHelper()
 		const baseDomain = 'https://api.audible.com'
 		const baseUrl = '1.0/catalog/products'
-		const params =
-			'?response_groups=contributors,product_desc,product_extended_attrs,product_attrs,media,rating,series&image_sizes=500,1024'
+		const paramArr = [
+			'contributors',
+			'product_desc',
+			'product_extended_attrs',
+			'product_attrs',
+			'media',
+			'rating',
+			'series',
+			'image_sizes=500,1024'
+		]
+		const paramStr = helper.getParamString(paramArr)
+		const params = `?response_groups=${paramStr}`
 		this.reqUrl = helper.buildUrl(asin, baseDomain, baseUrl, params)
 	}
 

src/helpers/shared.ts

@@ -133,6 +133,15 @@ class SharedHelper {
 	getGenreAsinFromUrl(url: string): string | undefined {
 		return url.match(this.asin11Regex)?.[0]
 	}
+
+	/**
+	 * Combine the given array of string parameters into a single string.
+	 * @param {string[]} params the array of string parameters to combine
+	 * @returns {string} the combined string
+	 */
+	getParamString(params: string[]): string {
+		return params.slice(0, -1).join(',') + '&' + params.slice(-1)
+	}
 }
 
 export default SharedHelper