以买方的身份与 B&A 集成

navigator.joinAdInterestGroup({
  name: 'example-ig',
  owner: 'https://dsp.example',

  // An ID is mapped to each render URL
  ads: [
    {
      renderURL: 'https://dsp.example/ad.html',
      adRenderId: '12345678' // 12 characters max,
      buyerReportingId: 'brid123', // Optional
      buyerAndSellerReportingId: 'bsrid123', // Optional
      selectableBuyerAndSellerReportingId: ['sbsrid123', 'sbsrid456'], // Optional
    },
  ],
  adComponents: [
    {
      renderURL: 'https://dsp.example/ad-component.html',
      adRenderId: 'abcdefgh'
    },
  ],

  // Flags are set to omit data in the B&A auction payload
  auctionServerRequestFlags: ['omit-ads', 'omit-user-bidding-signals'],

  // Data not included in the B&A auction payload can be fetched as trusted signals
  // The following is an example of how the keys could look, but the actual
  // implementation is up to the ad tech
  trustedBiddingSignalsKeys: [
    'exampleUserBiddingSignalsKey',
    'exampleAdRenderIdKey',
    'exampleAdMetadataKey',
    'exampleAdReportingIdKey',
  ],

  // Optionally, interest groups can be prioritized
  priority: 0.0,
});

navigator.joinAdInterestGroup({
  auctionServerRequestFlags: ['omit-user-bidding-signals', 'omit-ads'],
});

navigator.joinAdInterestGroup({
  ads: [
    {
      renderURL: 'https://dsp.example/ad.html',
      adRenderId: '12345678' // 12 characters max
    },
  ],
  adComponents: [
    {
      renderURL: 'https://dsp.example/ad-component.html',
      adComponentRenderId: 'abcdefgh'
    },
  ],
});

const ad1RenderURL = 'https://dsp.example/ad-1.html';
const ad2RenderURL = 'https://dsp.example/ad-2.html';
const ad1RenderId = 'render-id-1';
const ad2RenderId = 'render-id-2';
const ad1ReportingId = 'reporting-id-1';
const ad2ReportingId = 'reporting-id-2';

// Generate a unique identifier
const id = crypto.randomUUID();

// Define the keys with the unique ID
const trustedSignalsKeyForIG = `interest-group-${id}`

// Set the keys in the interest group
navigator.joinAdInterestGroup({
  // …
  ads: [
    {
      renderURL: ad1RenderURL,
      adRenderId: ad1RenderId,
      buyerReportingId: ad1ReportingId
    },
    {
      renderURL: ad2RenderURL,
      adRenderId: ad2RenderId,
      buyerReportingId: ad2ReportingId
    },
  ],
  trustedBiddingSignalsKeys: [
    trustedSignalsKeyForIG
  ]
});

// Send the associated data to your server to be loaded into the Key/Value Service
fetch('https://dsp.example/kv/load', {
  method: 'POST',
  body: JSON.stringify({
    id,
    [trustedSignalsKeyForIG]: {
      userBiddingSignals: {
        favoriteColor: 'blue'
      },
      ads: [
        {
          renderURL: ad1RenderURL,
          adRenderId: ad1RenderId,
          buyerReportingId: ad1ReportingId,
          metadata: {
            color: 'red'
          }   
        },
        {
          renderURL: ad2RenderURL,
          adRenderId: ad2RenderId,
          buyerReportingId: ad2ReportingId,
          metadata: {
            color: 'blue'
          }   
        },
      ]
    }
  })
});

{
  topWindowHostname: 'advertiser.example',
  seller: 'https://ssp.example',
  topLevelSeller: 'https://ssp-top.example',
  joinCount: 5,
  bidCount: 24,
  recency: 1684134092,

  // prevWins is [timeInSeconds, adRenderId]
  prevWins: [
    [9342, 'render-id-1'],
    [1314521, 'render-id-2']
  ],

  // Compiled WebAssembly code
  wasmHelper: WebAssembly.Module

  // Data-Version value from K/V response, if available
  dataVersion: 1,
}

await navigator.joinAdInterestGroup({
  ads: [
    { renderURL: 'https://dsp.example/red-shirt-ad.html', adRenderId: 'arid1'},
    { renderURL: 'https://dsp.example/blue-shirt-ad.html', adRenderId: 'arid2'},
    { renderURL: 'https://dsp.example/red-pants-ad.html', adRenderId: 'arid3'},
    { renderURL: 'https://dsp.example/blue-pants-ad.html', adRenderId: 'arid4'},
  ],
  trustedBiddingSignalKeys: [
    'userBiddingSignals-someUniqueId',
    // ...and more
  ]
})

fetch('https://dsp.example/kv/load', {
  body: JSON.stringify({
    'userBiddingSignals-someUniqueId': {
      favoriteColor: 'blue',
      favoriteProduct: 'shirt'
    }
  })
})

function generateBid(..., trustedBiddingSignals, browserSignals) {
  const { userBiddingSignals } = trustedBiddingSignals
  const { favoriteColor, favoriteProduct } = userBiddingSignals

  return {
    bid: 1,
    render: `https://dsp.example/${favoriteColor}-${favoriteProduct}-ad.html`
  }
}

generateBid(..., trustedBiddingSignals, …) {
  const { ad1ReportingId, ad2reportingId } = trustedBiddingSignals;
  // ...
  return {
    bid: 1,
    render: 'https://dsp.example/ad-1.html'
    buyerReportingId: ad1reportingId
  }
}

reportWin(..., buyerReportingSignals) {
  const { buyerReportingId } = buyerReportingSignals;
}