Escalax Bid Adapter: initial release (prebid#12483)

* init escalax adapter

* region substitution based on time zone

Author: escalax

modules/escalaxBidAdapter.js

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+import { ortbConverter } from '../libraries/ortbConverter/converter.js';
+import { registerBidder } from '../src/adapters/bidderFactory.js';
+import { config } from '../src/config.js';
+import { BANNER, NATIVE, VIDEO } from '../src/mediaTypes.js';
+
+const BIDDER_CODE = 'escalax';
+const ESCALAX_SOURCE_ID_MACRO = '[sourceId]';
+const ESCALAX_ACCOUNT_ID_MACRO = '[accountId]';
+const ESCALAX_SUBDOMAIN_MACRO = '[subdomain]';
+const ESCALAX_URL = `https://${ESCALAX_SUBDOMAIN_MACRO}.escalax.io/bid?type=pjs&partner=${ESCALAX_SOURCE_ID_MACRO}&token=${ESCALAX_ACCOUNT_ID_MACRO}`;
+const ESCALAX_DEFAULT_CURRENCY = 'USD';
+const ESCALAX_DEFAULT_SUBDOMAIN = 'bidder_us';
+
+function createImp(buildImp, bidRequest, context) {
+  const imp = buildImp(bidRequest, context);
+  imp.ext = {
+    [BIDDER_CODE]: {
+      sourceId: bidRequest.params.sourceId,
+      accountId: bidRequest.params.accountId,
+    }
+  };
+  if (!imp.bidfloor) imp.bidfloor = bidRequest.params.bidfloor;
+  return imp;
+}
+
+function createRequest(buildRequest, imps, bidderRequest, context) {
+  const request = buildRequest(imps, bidderRequest, context);
+  const bid = context.bidRequests[0];
+  request.test = config.getConfig('debug') ? 1 : 0;
+  if (!request.cur) request.cur = [bid.params.currency || ESCALAX_DEFAULT_CURRENCY];
+  return request;
+}
+
+function createBidResponse(buildBidResponse, bid, context) {
+  const bidResponse = buildBidResponse(bid, context);
+  bidResponse.cur = 'USD';
+  return bidResponse;
+}
+
+function getSubdomain() {
+  const regionMap = {
+    'Europe': 'bidder_eu',
+    'Africa': 'bidder_eu',
+    'Atlantic': 'bidder_eu',
+    'Arctic': 'bidder_eu',
+    'Asia': 'bidder_apac',
+    'Australia': 'bidder_apac',
+    'Antarctica': 'bidder_apac',
+    'Pacific': 'bidder_apac',
+    'Indian': 'bidder_apac',
+    'America': 'bidder_us'
+  };
+
+  try {
+    const timezone = Intl.DateTimeFormat().resolvedOptions().timeZone;
+    const region = timezone.split('/')[0];
+    return regionMap[region] || 'bidder_us';
+  } catch (err) {
+    return 'bidder_us';
+  }
+}
+
+const converter = ortbConverter({
+  context: {
+    netRevenue: true,
+    ttl: 20,
+  },
+  imp: createImp,
+  request: createRequest,
+  bidResponse: createBidResponse
+});
+
+export const spec = {
+  code: BIDDER_CODE,
+  supportedMediaTypes: [BANNER, VIDEO, NATIVE],
+
+  isBidRequestValid: (bid) => {
+    return Boolean(bid.params.sourceId) && Boolean(bid.params.accountId);
+  },
+
+  buildRequests: (validBidRequests, bidderRequest) => {
+    if (validBidRequests && validBidRequests.length === 0) return [];
+    const { sourceId, accountId } = validBidRequests[0].params;
+    const subdomain = getSubdomain();
+    const endpointURL = ESCALAX_URL
+      .replace(ESCALAX_SUBDOMAIN_MACRO, subdomain || ESCALAX_DEFAULT_SUBDOMAIN)
+      .replace(ESCALAX_ACCOUNT_ID_MACRO, sourceId)
+      .replace(ESCALAX_SOURCE_ID_MACRO, accountId);
+    const request = converter.toORTB({ bidRequests: validBidRequests, bidderRequest });
+    return {
+      method: 'POST',
+      url: endpointURL,
+      data: request
+    };
+  },
+
+  interpretResponse: (response, request) => {
+    if (response?.body) {
+      const bids = converter.fromORTB({ response: response.body, request: request.data }).bids;
+      return bids;
+    }
+    return [];
+  },
+};
+
+registerBidder(spec);

modules/escalaxBidAdapter.md

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+# Overview
+
+```
+Module Name: Escalax SSP Bidder Adapter
+Module Type: Bidder Adapter
+Maintainer: connect@escalax.io
+```
+
+# Description
+
+Escalax Bidding adapter requires setup before beginning. Please contact us at <connect@escalax.io>
+
+# Test Parameters
+
+```js
+const adUnits = [
+  {
+    code: "banner1",
+    mediaTypes: {
+      banner: {
+        sizes: [
+          [300, 250],
+          [300, 600],
+        ],
+      },
+    },
+    bids: [
+      {
+        bidder: "escalax",
+        params: {
+          accountId: "hash",
+          sourceId: "sourceId",
+        },
+      },
+    ],
+  },
+  {
+    code: "native_example",
+    mediaTypes: {
+      native: {},
+    },
+    bids: [
+      {
+        bidder: "escalax",
+        params: {
+          accountId: "hash",
+          sourceId: "sourceId",
+        },
+      },
+    ],
+  },
+  {
+    code: "video1",
+    sizes: [640, 480],
+    mediaTypes: {
+      video: {
+        minduration: 0,
+        maxduration: 999,
+        boxingallowed: 1,
+        skip: 0,
+        mimes: ["application/javascript", "video/mp4"],
+        w: 1920,
+        h: 1080,
+        protocols: [2],
+        linearity: 1,
+        api: [1, 2],
+      },
+    },
+    bids: [
+      {
+        bidder: "escalax",
+        params: {
+          accountId: "hash",
+          sourceId: "sourceId",
+        },
+      },
+    ],
+  },
+];
+```