feat: add view function to encode params

Author: Yash Agrawal

contracts/SBTToken.sol

@@ -218,6 +218,23 @@ contract SBTToken is ISBTToken, ERC721EnumerableUpgradeable {
 			);
 	}
 
+	function encodeMetadata(
+		string memory name,
+		string memory description,
+		StringAttribute[] memory stringAttributes,
+		NumberAttribute[] memory numberAttributes,
+		string memory tokenUriImage
+	) public pure override returns (bytes memory) {
+		return
+			abi.encode(
+				name,
+				description,
+				tokenUriImage,
+				stringAttributes,
+				numberAttributes
+			);
+	}
+
 	function tokenURI(
 		uint256 tokenId
 	) public view override returns (string memory) {

contracts/interfaces/ISBTToken.sol

@@ -78,6 +78,23 @@ interface ISBTToken {
 		string memory tokenURIImage
 	) external;
 
+	/*
+	 * @dev Get the NFT metadata in encoded format.
+	 * @param name The name of the NFT.
+	 * @param description The description of the NFT.
+	 * @param stringAttributes The array of all the string attributes.
+	 * @param numberAttributes The array of all the number attributes.
+	 * param tokenUriImage The token image data or url.
+	 * @return bytes The encoded metadata bytes.
+	 */
+	function encodeMetadata(
+		string memory name,
+		string memory description,
+		StringAttribute[] memory stringAttributes,
+		NumberAttribute[] memory numberAttributes,
+		string memory tokenUriImage
+	) external pure returns (bytes memory);
+
 	/*
 	 * @dev get token ids by owner
 	 * @param _owner owner address