Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 | 1x 14x 14x 9x 5x 1x 1x 1x 1x 1x 5x 5x 5x 5x 5x 5x 1x 5x 1x 5x 5x 4x | import { Buy } from "../../../rmrk1.0.0/classes/buy";
import { OP_TYPES } from "../../constants";
import { BlockCall } from "../../types";
import { Change } from "../../../rmrk1.0.0/changelog";
import { Remark } from "../remark";
import { NFT as N100 } from "../../..";
export const interactionBuy = (
remark: Remark, // Current remark
buyEntity: Buy,
nft?: N100 // NFT in current state
): void => {
// An NFT was bought after having been LISTed for sale
console.log("Instantiating buy");
if (!nft) {
throw new Error(
`[${OP_TYPES.BUY}] Attempting to buy non-existant NFT ${buyEntity.id}`
);
}
validate(remark, buyEntity, nft);
nft.addChange({
field: "owner",
old: nft.owner,
new: remark.caller,
caller: remark.caller,
block: remark.block,
} as Change);
nft.owner = remark.caller;
nft.addChange({
field: "forsale",
old: nft.forsale,
new: BigInt(0),
caller: remark.caller,
block: remark.block,
} as Change);
nft.forsale = BigInt(0);
};
const isTransferValid = (remark: Remark, nft: N100) => {
let transferValid = false;
let transferValue = "";
remark.extra_ex?.forEach((el: BlockCall) => {
Eif (el.call === "balances.transfer") {
transferValue = el.value;
if (el.value === `${nft.owner},${nft.forsale}`) {
transferValid = true;
}
}
});
return { transferValid, transferValue };
};
const validate = (remark: Remark, buyEntity: Buy, nft: N100) => {
const { transferValid, transferValue } = isTransferValid(remark, nft);
switch (true) {
case nft.burned != "":
throw new Error(
`[${OP_TYPES.BUY}] Attempting to buy burned NFT ${buyEntity.id}`
);
case nft.forsale <= BigInt(0):
throw new Error(
`[${OP_TYPES.BUY}] Attempting to buy not-for-sale NFT ${buyEntity.id}`
);
case nft.transferable === 0 || nft.transferable >= remark.block:
throw new Error(
`[${OP_TYPES.BUY}] Attempting to buy non-transferable NFT ${buyEntity.id}.`
);
case remark.extra_ex?.length === 0:
throw new Error(
`[${OP_TYPES.BUY}] No accompanying transfer found for purchase of NFT with ID ${buyEntity.id}.`
);
case !transferValid:
throw new Error(
`[${OP_TYPES.BUY}] Transfer for the purchase of NFT ID ${buyEntity.id} not valid. Recipient, amount should be ${nft.owner},${nft.forsale}, is ${transferValue}.`
);
}
};
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