Update Acre SDK initialization for tBTC module

The tBTC module initialization was updated to match the tBTC module
wrapper for tBTC SDK.

sdk/src/acre.ts

@@ -1,4 +1,3 @@
-import { TBTC } from "@keep-network/tbtc-v2.ts"
 import { AcreContracts } from "./lib/contracts"
 import { ChainEIP712Signer } from "./lib/eip712-signer"
 import {
@@ -7,10 +6,13 @@ import {
   getEthereumContracts,
 } from "./lib/ethereum"
 import { StakingModule } from "./modules/staking"
+import Tbtc from "./modules/tbtc"
 import { EthereumSignerCompatibleWithEthersV5 } from "./lib/utils"
 
+const TBTC_API_ENDPOINT = process.env.TBTC_API_ENDPOINT ?? ""
+
 class Acre {
-  readonly #tbtc: TBTC
+  readonly #tbtc: Tbtc
 
   readonly #messageSigner: ChainEIP712Signer
 
@@ -21,7 +23,7 @@ class Acre {
   constructor(
     _contracts: AcreContracts,
     _messageSigner: ChainEIP712Signer,
-    _tbtc: TBTC,
+    _tbtc: Tbtc,
   ) {
     this.contracts = _contracts
     this.#tbtc = _tbtc
@@ -37,30 +39,17 @@ class Acre {
     signer: EthereumSignerCompatibleWithEthersV5,
     network: EthereumNetwork,
   ): Promise<Acre> {
-    const tbtc = await Acre.#getTBTCEthereumSDK(signer, network)
     const contracts = getEthereumContracts(signer, network)
     const messages = new EthereumEIP712Signer(signer)
 
-    return new Acre(contracts, messages, tbtc)
-  }
+    const tbtc = await Tbtc.initialize(
+      signer,
+      network,
+      TBTC_API_ENDPOINT,
+      contracts.bitcoinDepositor,
+    )
 
-  static #getTBTCEthereumSDK(
-    signer: EthereumSignerCompatibleWithEthersV5,
-    network: EthereumNetwork,
-  ): Promise<TBTC> {
-    switch (network) {
-      case "sepolia":
-        // @ts-expect-error We require the `signer` must include the ether v5
-        // signer's methods used in tBTC-v2.ts SDK so if we pass signer from
-        // ethers v6 it won't break the Acre SDK initialization.
-        return TBTC.initializeSepolia(signer)
-      case "mainnet":
-      default:
-        // @ts-expect-error We require the `signer` must include the ether v5
-        // signer's methods used in tBTC-v2.ts SDK so if we pass signer from
-        // ethers v6 it won't break the Acre SDK initialization.
-        return TBTC.initializeMainnet(signer)
-    }
+    return new Acre(contracts, messages, tbtc)
   }
 }