add fully AMM sample codes

content/_code-samples/create-amm/ts/create-amm.ts

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+'use strict'
+
+require('dotenv').config();
+var xrpl = require('xrpl')
+// Configure console.log to print deeper into nested objects so you can
+// better see properties of the AMM:
+require('util').inspect.defaultOptions.depth = 5
+import {
+  AmmInfo,
+  TokenInfo,
+  acquireTokens,
+  bidAmm,
+  checkExistsAmm,
+  confirmAmm,
+  createAmm,
+  depositAmm,
+  getAmmcost,
+  get_new_token,
+  swap,
+  voteAmm,
+  withdrawAmm
+} from './lib/amm';
+import {
+  WS_URL
+} from './util/consts';
+
+/**
+ * AMM機能を試すためのスクリプト
+ */
+async function main() {
+  const client = new xrpl.Client(WS_URL);
+  await client.connect()
+
+  // Get credentials from the Faucet -------------------------------------------
+  console.log("Requesting address from the faucet...")
+  // const wallet = (await client.fundWallet()).wallet
+
+  // To use an existing account, use code such as the following:
+  const wallet = xrpl.Wallet.fromSeed(process.env.SECRET_FEED!)
+
+  // Create New Token
+  const msh_amount = await get_new_token(client, wallet, "MSH", "10000")
+  // call get new token method (FOO トークンを発行)
+  const foo_amount = await get_new_token(client, wallet, "FOO", "1000")
+
+  // Acquire tokens ------------------------------------------------------------
+  await acquireTokens(client, wallet, msh_amount);
+  await acquireTokens(client, wallet, foo_amount);
+
+  // create AMM Info
+  const amm_info_request: AmmInfo = {
+    "command": "amm_info",
+    "asset": {
+      "currency": msh_amount.currency!,
+      "issuer": msh_amount.issuer!,
+    },
+    "asset2": {
+      "currency": foo_amount.currency!,
+      "issuer": foo_amount.issuer!
+    },
+    "ledger_index": "validated"
+  }
+
+  // Check if AMM already exists ----------------------------------------------
+  await checkExistsAmm(client, amm_info_request, msh_amount, foo_amount);
+
+  // Look up AMM transaction cost ---------------------------------------------
+  const amm_fee_drops = await getAmmcost(client);
+
+  // Create AMM ---------------------------------------------------------------
+  // This example assumes that 15 TST ≈ 100 FOO in value.
+  await createAmm(client, wallet, msh_amount, foo_amount, amm_fee_drops)
+
+  // Confirm that AMM exists --------------------------------------------------
+  const {
+    account_lines_result: account_lines_result,
+    ammInfo: ammInfo
+  } = await confirmAmm(client, wallet, amm_info_request);
+
+  // console.log("account_lines_result:", account_lines_result)
+  console.log("ammAddress:", ammInfo.issuer)
+
+  // deposit AMM
+  await depositAmm(client, wallet, msh_amount, "15", foo_amount, "100")
+  // withdraw AMM
+  await withdrawAmm(client, wallet, msh_amount, "5", foo_amount, "5")
+  // BidAMM
+  await bidAmm(client, wallet, msh_amount, foo_amount, ammInfo)
+  // VoteAMM
+  await voteAmm(client, wallet, msh_amount, foo_amount, 500)
+  // Swap (payment Transaction)
+  await swap(client, wallet, ammInfo.issuer, msh_amount, foo_amount, "1", "2")
+
+  // confirm AMM again
+  const {
+    account_lines_result: account_lines_result2,
+  } = await confirmAmm(client, wallet, amm_info_request);
+
+  //console.log("account_lines_result2:", account_lines_result2)
+
+  // ============= (another XRP pattern) ===============
+
+  // create AMM Info (another XRP pattern)
+  const amm_info_request2: AmmInfo = {
+    "command": "amm_info",
+    "asset": {
+      "currency": msh_amount.currency!,
+      "issuer": msh_amount.issuer!,
+    },
+    "asset2": {
+      "currency": "XRP",
+      "issuer": null
+    },
+    "ledger_index": "validated"
+  }
+
+  // create XRP Amount info
+  const xrpInfo: TokenInfo = {
+    "currency": null,
+    "value": "10000000",
+    "issuer": null
+  }
+
+  // Check if AMM already exists ----------------------------------------------
+  await checkExistsAmm(client, amm_info_request2, msh_amount, xrpInfo);
+  // Create AMM ---------------------------------------------------------------
+  // This example assumes that 15 TST ≈ 100 FOO in value.
+  await createAmm(client, wallet, msh_amount, xrpInfo, amm_fee_drops)
+
+  // Confirm that AMM exists --------------------------------------------------
+  const {
+    ammInfo: ammInfo2
+  } = await confirmAmm(client, wallet, amm_info_request2);
+
+  // console.log("account_lines_result:", account_lines_result)
+  console.log("ammAddress2:", ammInfo2.issuer)
+  // deposit AMM
+  await depositAmm(client, wallet, msh_amount, "15", xrpInfo, "10")
+  // withdraw AMM
+  await withdrawAmm(client, wallet, msh_amount, "5", xrpInfo, "5")
+  // Swap (payment Transaction) XRP ->> MSH
+  await swap(client, wallet, ammInfo2.issuer, msh_amount, xrpInfo, "1", "2000000")
+  // Swap (payment Transaction) MSH ->> XRP
+  await swap(client, wallet, ammInfo2.issuer, xrpInfo, msh_amount, "2000", "1")
+
+
+  // Disconnect when done -----------------------------------------------------
+  await client.disconnect()
+}
+
+main()