Improve Digital Bid Adapter: Bid floor is sent in USD when possible (#…

…12341)

* 12238 - Azerion / Improve: does not properly support currency module

* **Type:** Fix
* **Scope:** improvedigitalBidAdapter
* **Subject:** Bid floors are always converted to USD.
* **Details:**
* Adds `DEFAULT_CURRENCY` variable which is set to USD
* Adds `convertBidFloorCurrency` function which in used to convert the bid floor when both `imp.bidfloor` and `imp.bidfloorcur` are present, and `imp.bidfloorcur` is not equal to the adapter's `DEFAULT_CURRENCY`;
* **Breaks:** N/A

* restored accidentally discarded change from unit test expect

* * Modifies behavior to pass bid floor as is when it cannot be converted to USD;
* Removes rounding of bid floor when converting its currency to USD;

* remove unnecessary uses of `toUpperCase()`

* * fix `convertCurrency` mock
* remove redundant checks for type and NaN from `convertBidFloorCurrency` function

---------

Co-authored-by: Lyubomir Shishkov <l.shishkov@azerion.com>
Co-authored-by: Jozef Bartek <31618107+jbartek25@users.noreply.github.com>

modules/improvedigitalBidAdapter.js

@@ -5,6 +5,7 @@ import {BANNER, NATIVE, VIDEO} from '../src/mediaTypes.js';
 import {Renderer} from '../src/Renderer.js';
 import {hasPurpose1Consent} from '../src/utils/gdpr.js';
 import {ortbConverter} from '../libraries/ortbConverter/converter.js';
+import {convertCurrency} from '../libraries/currencyUtils/currency.js';
 /**
  * See https://github.com/prebid/Prebid.js/pull/8827 for details on linting exception
  * ImproveDigital only imports after winning a bid and only if the creative cannot reach top
@@ -30,6 +31,7 @@ const BASIC_ADS_BASE_URL = 'https://ad.360yield-basic.com';
 const PB_ENDPOINT = 'pb';
 const EXTEND_URL = 'https://pbs.360yield.com/openrtb2/auction';
 const IFRAME_SYNC_URL = 'https://hb.360yield.com/prebid-universal-creative/load-cookie.html';
+const DEFAULT_CURRENCY = 'USD';
 
 const VIDEO_PARAMS = {
   DEFAULT_MIMES: ['video/mp4']
@@ -125,6 +127,21 @@ export const spec = {
 
 registerBidder(spec);
 
+const convertBidFloorCurrency = (imp) => {
+  try {
+    const bidFloor = convertCurrency(
+      imp.bidfloor,
+      imp.bidfloorcur,
+      DEFAULT_CURRENCY,
+      false,
+    );
+    imp.bidfloor = bidFloor;
+    imp.bidfloorcur = DEFAULT_CURRENCY;
+  } catch (err) {
+    logWarn(`Failed to convert bid floor to ${DEFAULT_CURRENCY}. Passing floor price in its original currency.`, err);
+  }
+};
+
 export const CONVERTER = ortbConverter({
   context: {
     ttl: CREATIVE_TTL,
@@ -139,7 +156,11 @@ export const CONVERTER = ortbConverter({
     imp.secure = Number(window.location.protocol === 'https:');
     if (!imp.bidfloor && bidRequest.params.bidFloor) {
       imp.bidfloor = bidRequest.params.bidFloor;
-      imp.bidfloorcur = getBidIdParameter('bidFloorCur', bidRequest.params).toUpperCase() || 'USD'
+      imp.bidfloorcur = getBidIdParameter('bidFloorCur', bidRequest.params).toUpperCase() || DEFAULT_CURRENCY;
+    }
+
+    if (imp.bidfloor && imp.bidfloorcur && imp.bidfloorcur !== DEFAULT_CURRENCY) {
+      convertBidFloorCurrency(imp);
     }
     const bidderParamsPath = context.extendMode ? 'ext.prebid.bidder.improvedigital' : 'ext.bidder';
     const placementId = bidRequest.params.placementId;