RemoveExpiredCampaigns removes campaigns with expired dates from a list of ongoing campaigns.

RemoveExpiredCampaigns.js

// sample social media campaigns and their expiry dates
const campaigns =
[
  {
    "type": "campaign",
    "target": "Facebook",
    "expiry": "2020-03-07T16:32:12.011Z",
    "id": "campaign:05:target:facebook:campaignNo:4AB12"
  },
  {
    "type": "campaign",
    "target": "Instagram",
    "expiry": "2020-11-07T16:32:12.011Z",
    "id": "campaign:07:target:instagram:campaignNo:4AB2"
  },
  {
    "type": "campaign",
    "target": "Facebook",
    "expiry": "2020-09-07T16:32:12.011Z",
    "id": "campaign:02:target:facebook:campaignNo:4AB19"
  }
]

// sample campaigns created by the campaign manager
const allTeamCampaigns = {
  "campaign:amanda-pina23": {
    "total": 205,
    "availableTotal": 180,
    "campaigns": {
      "campaign:05:target:facebook:campaignNo:4AB12": 109,
      "campaign:07:target:instagram:campaignNo:4AB2": 96
    }
  },
  "campaign:amanda-pina31": {
    "total": 50,
    "availableTotal": 10,
    "campaigns": {
      "campaign:05:target:facebook:campaignNo:4AB12": 40,
      "campaign:02:target:facebook:campaignNo:4AB19": 10
    }
  }
}


const getExpiredCampaigns = (campaigns) => {
	const today = new Date()
	return expiredCampaigns = campaigns.filter(campaign => {
		return (new Date(campaign.expiry)) < today
	}).map(campaign => campaign.id)
}

const removeExpiredCampaignsFromLedger = (allTeamCampaigns, allCampaigns) => {
	return Object.keys(allTeamCampaigns).map((lkey) => {
	    const currentTeamCampaigns = allTeamCampaigns[lkey]
	    const campaigns = currentTeamCampaigns.campaigns
	    const goodCampaigns = Object.keys(campaigns).filter((campaignId) => !getExpiredCampaigns(allCampaigns).includes(campaignId))
	        .reduce((prevCampaignSet, campaignId) => {
	        	const newCampaignSet = {}
	        	newCampaignSet[campaignId] = campaigns[campaignId]
	            return Object.assign(prevCampaignSet, newCampaignSet)
	        }, {})
	    
	    return Object.assign(currentTeamCampaigns, { campaigns: goodCampaigns, id: lkey })
	}).reduce((prevCampaignSet, newCampaignSet) => {
	    const formattedCampaigns = Object.assign({}, newCampaignSet)
	    delete formattedCampaigns.id
	    return Object.assign(prevCampaignSet, { [newCampaignSet.id]: formattedCampaigns })
	}, {})
}

const formatted = removeExpiredCampaignsFromLedger(allTeamCampaigns, campaigns)

console.log(formatted)