Examples: Buy, Transfer, SetApproval (#1)

* transfer, set approval and hardcoded buy

* buy-nft gas estimates

examples/buy-nft.ts

@@ -0,0 +1,22 @@
+import {
+  deriveEthAddress,
+  signAndSendTransaction
+} from "../src/chains/ethereum";
+
+const run = async () => {
+  const sender = await deriveEthAddress("ethereum,1");
+  // TODO - encode call Data from OpenSeaSDK.
+  // https://github.com/ProjectOpenSea/opensea-js/blob/main/developerDocs/advanced-use-cases.md
+  const seaportAddress = "0x00000000000000ADc04C56Bf30aC9d3c0aAF14dC";
+  const salePrice = 0.05;
+  const callData = "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";
+
+  await signAndSendTransaction(
+    sender,
+    seaportAddress,
+    salePrice,
+    callData
+  );
+};
+
+run();

examples/set-approval-for-all.ts

@@ -0,0 +1,27 @@
+import {
+  deriveEthAddress,
+  signAndSendTransaction,
+} from "../src/chains/ethereum";
+import {
+  erc721Interface
+} from "../src/utils/interfaces"
+
+
+
+const run = async () => {
+
+  const sender = await deriveEthAddress("ethereum,1");
+  const value = 0;
+  const tokenAddress = "0xe66be37f6b446079fe71a497312996dff6bd963f";
+  const operator = "0x8d99F8b2710e6A3B94d9bf465A98E5273069aCBd";
+  const callData = erc721Interface().encodeFunctionData("setApprovalForAll", [operator, true]);
+
+  await signAndSendTransaction(
+    sender,
+    tokenAddress,
+    value,
+    callData
+  );
+};
+
+run();

examples/transfer-nft.ts

@@ -0,0 +1,25 @@
+import {
+  deriveEthAddress,
+  signAndSendTransaction
+} from "../src/chains/ethereum";
+import { erc721Interface } from "../src/utils/interfaces";
+
+const run = async () => {
+  const sender = await deriveEthAddress("ethereum,1");
+  const value = 0;
+  // TODO retrieve from user:
+  const tokenAddress = "0xe66be37f6b446079fe71a497312996dff6bd963f";
+  const tokenId = 2;
+  const to = "0x8d99F8b2710e6A3B94d9bf465A98E5273069aCBd";
+
+  const callData = erc721Interface().encodeFunctionData("safeTransferFrom(address,address,uint256)", [sender, to, tokenId]);
+
+  await signAndSendTransaction(
+    sender,
+    tokenAddress,
+    value,
+    callData
+  );
+};
+
+run();