Royalties Provider (contract RoyaltiesRegistry)

Need to know before:

• struct Part[] {address account; uint value} - simple one-level structure to save address author and their part.

Methods

RoyaltiesRegistry is a separate contract, which provides interface: getRoyalties() and methods: setProviderByToken(), setRoyaltiesByToken(), setRoyaltiesByTokenAndTokenId(). Methods can be called by Owner contract RoyaltiesRegistry or by Owner contract (token), which address set as input parameter token.

Royalties Provider - any contract, which supports IRoyaltiesProvider interface. In this way any contract can inherit IRoyaltiesProvider interface and realize own method getRoyalties(). Address Royalties Provider contract will appear in ProviderRoyalties hash storage(use further PHS) after calling method setProviderByToken().

getRoyalties(address token, uint tokenId) returns(Part[] memory royalties);

• Input parameter: token - address token;
• Input parameter: tokenId - token Id;
• Returns: royalties - Part[] array royalties.

Algorithm getRoyalties() consists of three parts:

1. Check RoyaltiesRegistry hash storage(use further RHS), if find royalties by token or tokenId, return royalties.
2. Check PHS by input token. If find a contract address in PHS, check contract supports IRoyaltiesProvider interface, get royalties by IRoyaltiesProvider interface, save royalties in RHS, return royalties.
3. Check contract royalties by token and tokenId. If contract supports RoyaltiesV1 or RoyaltiesV2 interface, get royalties by one of supported interfaces (RoyaltiesV1 or RoyaltiesV2), save royalties in RHS, return royalties.

setProviderByToken(address token, address provider); Save address provider in PHS. This method don`t update RHS. If it necessary to save royalties in RHS, user need to call method setRoyaltiesByTokenAndTokenId().

• Input parameter: token - address token;
• Input parameter: tokenId - token Id.

setRoyaltiesByTokenAndTokenId(address token, uint tokenId, Part[] memory royalties); Save royalties in RHS.

• Input parameter: token - address token;
• Input parameter: tokenId - token Id;
• Input parameter: royalties - array royalties, each item content author address and author part.

setRoyaltiesByToken(address token, Part[] memory royalties); Save royalties in RHS.

• Input parameter: token - address token;
• Input parameter: royalties - array royalties, each item content author address and author part.