Add nextMilleniumBidAdapter (prebid#3249)

* Add nextMilleniumBidAdapter

* fix bugs

modules/nextMilleniumBidAdapter.js

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+import * as utils from 'src/utils';
+import { registerBidder } from 'src/adapters/bidderFactory';
+import { BANNER } from 'src/mediaTypes';
+
+const BIDDER_CODE = 'nextMillenium';
+const HOST = 'https://brainlyads.com';
+const CURRENCY = 'USD';
+const TIME_TO_LIVE = 360;
+
+export const spec = {
+  code: BIDDER_CODE,
+  supportedMediaTypes: [BANNER],
+
+  isBidRequestValid: function(bid) {
+    return !!(
+      bid.params.placement_id && utils.isNumber(bid.params.placement_id)
+    );
+  },
+
+  buildRequests: function(validBidRequests) {
+    let requests = [];
+
+    utils._each(validBidRequests, function(bid) {
+      requests.push({
+        method: 'POST',
+        url: HOST + '/hb/s2s',
+        options: {
+          contentType: 'application/json',
+          withCredentials: true
+        },
+        data: JSON.stringify({
+          placement_id: utils.getBidIdParameter('placement_id', bid.params)
+        }),
+        bidId: bid.bidId
+      });
+    });
+
+    return requests;
+  },
+
+  interpretResponse: function(serverResponse, bidRequest) {
+    try {
+      const bidResponse = serverResponse.body;
+      const bidResponses = [];
+
+      if (Number(bidResponse.cpm) > 0) {
+        bidResponses.push({
+          requestId: bidRequest.bidId,
+          cpm: bidResponse.cpm,
+          width: bidResponse.width,
+          height: bidResponse.height,
+          creativeId: bidResponse.creativeId,
+          currency: CURRENCY,
+          netRevenue: false,
+          ttl: TIME_TO_LIVE,
+          ad: bidResponse.ad
+        });
+      }
+
+      return bidResponses;
+    } catch (err) {
+      utils.logError(err);
+      return [];
+    }
+  },
+
+  getUserSyncs: function(syncOptions) {
+    const syncs = []
+    if (syncOptions.iframeEnabled) {
+      syncs.push({
+        type: 'iframe',
+        url: HOST + '/hb/s2s/matching'
+      });
+    }
+
+    if (syncOptions.pixelEnabled) {
+      syncs.push({
+        type: 'image',
+        url: HOST + '/hb/s2s/matching'
+      });
+    }
+    return syncs;
+  }
+};
+registerBidder(spec);

modules/nextMilleniumBidAdapter.md

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+# Overview
+```
+Module Name: NextMillenium Bid Adapter
+Module Type: Bidder Adapter
+Maintainer: mikhail.ivanchenko@iageengineering.net
+```
+
+# Description
+Module that connects to NextMillenium's server for bids.
+Currently module supports only banner mediaType.
+
+# Test Parameters
+```
+    var adUnits = [{
+        code: '/test/div',
+        mediaTypes: {
+            banner: {
+                sizes: [[300, 250]]
+            }
+        },
+        bids: [{
+            bidder: 'nextMillenium',
+            params: {
+                placement_id: -1
+            }
+        }]
+    }];
+```

test/spec/modules/nextMilleniumBidAdapter_spec.js

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+import { expect } from 'chai';
+import { spec } from 'modules/nextMilleniumBidAdapter';
+
+describe('nextMilleniumBidAdapterTests', function() {
+  let bidRequestData = {
+    bids: [
+      {
+        bidId: 'transaction_1234',
+        bidder: 'nextMillenium',
+        params: {
+          placement_id: 12345
+        },
+        sizes: [[300, 250]]
+      }
+    ]
+  };
+  let request = [];
+
+  it('validate_pub_params', function() {
+    expect(
+      spec.isBidRequestValid({
+        bidder: 'nextMillenium',
+        params: {
+          placement_id: 12345
+        }
+      })
+    ).to.equal(true);
+  });
+
+  it('validate_generated_params', function() {
+    let bidRequestData = [
+      {
+        bidId: 'bid1234',
+        bidder: 'nextMillenium',
+        params: { placement_id: -1 },
+        sizes: [[300, 250]]
+      }
+    ];
+    let request = spec.buildRequests(bidRequestData);
+    expect(request[0].bidId).to.equal('bid1234');
+  });
+
+  it('validate_getUserSyncs_function', function() {
+    expect(spec.getUserSyncs({ iframeEnabled: true })).to.have.lengthOf(1);
+    expect(spec.getUserSyncs({ iframeEnabled: false })).to.have.lengthOf(0);
+
+    let pixel = spec.getUserSyncs({ iframeEnabled: true });
+    expect(pixel[0].type).to.equal('iframe');
+    expect(pixel[0].url).to.equal('https://brainlyads.com/hb/s2s/matching');
+  });
+
+  it('validate_response_params', function() {
+    let serverResponse = {
+      body: {
+        cpm: 1.7,
+        width: 300,
+        height: 250,
+        creativeId: 'p35t0enob6twbt9mofjc8e',
+        ad: 'Hello! It\'s a test ad!'
+      }
+    };
+
+    let bids = spec.interpretResponse(serverResponse, bidRequestData.bids[0]);
+    expect(bids).to.have.lengthOf(1);
+
+    let bid = bids[0];
+
+    expect(bid.creativeId).to.equal('p35t0enob6twbt9mofjc8e');
+    expect(bid.ad).to.equal('Hello! It\'s a test ad!');
+    expect(bid.cpm).to.equal(1.7);
+    expect(bid.width).to.equal(300);
+    expect(bid.height).to.equal(250);
+    expect(bid.currency).to.equal('USD');
+  });
+
+  it('validate_response_params_with passback', function() {
+    let serverResponse = {
+      body: [
+        {
+          hash: '1e100887dd614b0909bf6c49ba7f69fdd1360437',
+          content: 'Ad html passback',
+          size: [300, 250],
+          is_passback: 1
+        }
+      ]
+    };
+    let bids = spec.interpretResponse(serverResponse);
+
+    expect(bids).to.have.lengthOf(0);
+  });
+});