Solana Piggy Bank Program with Anchor

This is a Solana program written using the Anchor framework that allows users to save and get back their tokens from a piggy bank.

Further to the previous Counter program which demonstrate how to store and manipulate data on Solana, this program demonstrates:

• Transfer of tokens
• Custody of user's tokens to a vault owned by PDA
• Closure of normal accounts and token accounts
• Using clock Solana
• Handling predefined errors

Features

Initialization

The PiggyBank program initializes a bank account with specifying the owner, the token mint allowed and the lock period.

pub fn init_bank(ctx: Context<InitBank>, timeout: i64)

Deposit Tokens

Deposit tokens into the bank.

pub fn deposit(ctx: Context<Deposit>, amount: u64)

Close the Bank

Check if the lock period expiries, withdraw all tokens deposited and close the bank.

pub fn close_bank(ctx: Context<CloseBank>)

Accounts

The program uses the following account structures:

#[account]
#[derive(InitSpace)]
pub struct PiggyBank {
    pub owner: Pubkey,
    pub mint: Pubkey,
    pub balance: u64,
    pub start_time: i64,
    pub timeout: i64,
}

Prerequisites

• Rust
• Solana CLI
• Anchor

Getting Started

1. Clone the Repository

git clone https://github.com/kenchan0824/anchor-piggybank.git
cd solana-piggybank

2. Run the Test

anchor test

Tests

The tests for the counter program are located in

piggybank.ts

The tests include:

• Initialize the piggy bank
• Deposit into piggy bank
• Close the piggy bank should fail before timeout
• Close the piggy bank should fail before timeout
• Close the piggy bank

License

This project is licensed under the MIT License. See the LICENSE file for details.