/**
 * fake asynchronous bid request function
 * to be implemented by partners
 *
 * @param {Object} state - the player state (retrieved by AD_READYTOFETCH)
 * @return {Promise}
 * @resolve {Object} computed customConfig object
 * @reject {String} error
 */
const myFetchPrebid = async ({ videoId, adPosition } = {}) => {
  const timeout = (ms) => new Promise(resolve => setTimeout(resolve, ms))

  await timeout(2000)

  return {
    hbTest: 'customHBwithPES',
    hbVideoId: videoId || 'tooEarly',
    hbAdPosition: adPosition || 'preroll',
  }
}

// Step 3: get the player and fetch advertising values from the header bidding solution in parallel
// When used with a first preroll, myFetchPrebid function shouldn't trigger a prebid auction since it is already ongoing. It should however trigger the auction for any other ad break than first preroll
Promise.all([dailymotion.getPlayer('myPlayer'), myFetchPrebid()])
  .then(([player, customConfig]) => {
    // Step 4: When ad values returned and the player is retrieved, update the player with setCustomConfig()
    player.setCustomConfig(customConfig)

    // Step 5: Add an event listener AD_READYTOFETCH for the next ads
    // each time the event is caught, fetch new advertising values and pass it via setCustomConfig() 
    player.on(dailymotion.events.AD_READYTOFETCH, (state) => {
      myFetchPrebid(state)
        .then((customConfig) => {
          player.setCustomConfig(customConfig)
        })        
        .catch((err) => {
          console.error(err)
        })
    })
  }) 
  .catch(() => {
    console.error("fail to get the player")
  })