initialize_tree_account_for_spl_token

pub fn initialize_tree_account_for_spl_token(
    ctx: Context<InitializeTreeAccountForSplToken>,
    max_deposit_amount: u64
) -> Result<()>

import * as anchor from "@coral-xyz/anchor";
import { Program } from "@coral-xyz/anchor";
import { PublicKey } from "@solana/web3.js";

const program = anchor.workspace.Zkcash as Program<Zkcash>;
const authority = anchor.web3.Keypair.generate();

// Example: Initialize tree for USDC on mainnet
const usdcMint = new PublicKey("EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v");

// Derive tree PDA for this mint
const [splTreePDA] = PublicKey.findProgramAddressSync(
  [Buffer.from("merkle_tree"), usdcMint.toBuffer()],
  program.programId
);

const [globalConfigPDA] = PublicKey.findProgramAddressSync(
  [Buffer.from("global_config")],
  program.programId
);

// Maximum deposit: 1 million USDC (1,000,000 * 10^6)
const maxDepositAmount = new anchor.BN(1_000_000_000_000);

await program.methods
  .initializeTreeAccountForSplToken(maxDepositAmount)
  .accounts({
    treeAccount: splTreePDA,
    mint: usdcMint,
    globalConfig: globalConfigPDA,
    authority: authority.publicKey,
    systemProgram: anchor.web3.SystemProgram.programId
  })
  .signers([authority])
  .rpc();

console.log(`SPL tree initialized for mint: ${usdcMint.toString()}`);

// 1. Initialize the tree (once per token)
await initializeTreeForToken(usdcMint, maxDeposit);

// 2. Users can now deposit that token
await transactSpl(depositProof, usdcMint);

// 3. Optionally update the deposit limit later
await updateDepositLimitForSplToken(usdcMint, newLimit);