crowdfunder add campaign cancel campaign update campaign withdraw proceeds

campaignId is campaign contract Address

mapping campaignId => campaign struct

events campaign added campaign canceled campaign expired campaign successful campaign updated

getter functions getCampaign(campaignId) getCampaigns getAmountMade(campaignId) -- current balance

campaign -- struct

campaign { campaign id creator creator type (sole or team) title description tags goalAmount funding deadline current balance state (expired, successful, inprogess) address => contributions mapping }

getBalance getDetails