crowdfunding-dapp

A Web3 crowdfunding platform using custom ERC20 tokens and ERC1155 NFTs to enable contributors to become project shareholders, and the ability to claim proportional profits when the project becomes profitable.

ERC20 - T1 (This will be our token for funding) NFT(ERC 1155) - P1 (Here 1 is the id of the project, so we will have separate ERC 1155 tokens for separate projects confirmed from Yash).

Example Use case:

Goal - 100 T1 P1 tokens - 1000 contribution = 10T1 deadline - 6 days (we will cater our deadline via a bool if yes -> deadline met, else not)

Formula sharesToBeGivenToinvestor = contribution/Goal * total number of NFTs

Examples:

A user -> 10T1 = 10/1001000 = 100 P1 B user -> 2 T1 = 2/1001000 = 20 P1

When Goal achieved

Formula Net profit for user = profit_multipier * invested_P1 * ratio(Goal in terms of P1)

eg Lets say after goal achieved the company went 2x

so profit_multipier = 2 invested P1 for user A = 100P1

Net profit for A = 2 * 100 * 100/1000 = 4 T1 which is twice the amt he invested

Contract functions:

1. createProject

• Initialize Goal(in T1 units), Deadline, number of P1 tokens, name
• number of P1 tokens
• Append to the list of projects if exists
• mint P1 tokens
• return project id

2. getallProjects(Read from the list of projects)

• simply return the project with data

3. contribute/investInProject(ID, amount)

• User will enter the amount of T1 tokens which they want to pledge
• The same amount of T1 tokens will be minted and ransaferred to our CF contract
• Map user address with amount of T1 tokens
• We will calculate number of P1 tokens to be given to the user
• We will mint and transfer calculated number of P1 tokens to the user's address.

4. Withdraw

• 24hr check otherwise return error
• Iterate through map
• InvestorContribution and find the contributer, and transfer all the ERC20 tokens back to their respective contributers and burn(?) their respective P1
• ask about the burn thing

5. RefundAll

• Iterate through map - InvestorContribution,
• and transfer all the ERC20 tokens back to their respective contributers and burn(?) their respective P1 tokens.
• ask about the burn thing

6. ClaimProfit -

• Iterate through map - InvestorContribution and find the investor's contribution.
• Check if the number of P1 tokens they want to claim is lesser than or equal to their P1 shares.
• calculate the profit using the formula above and return the profit in terms of T1 tokens to the user.
• remove from investor from map and burn 1155 for them