near-api-lib

The NEAR API library is a comprehensive Rust library designed to simplify the development of applications on the NEAR blockchain. It provides developers with essential tools and abstractions for account management, transaction building and signing, querying the blockchain state, and performing cryptographic operations, all from the comfort of Rust.

Features

• Account Management: Easily manage NEAR accounts, allowing for the creation of new accounts, key management, and account deletion.

• Transaction Building and Signing: Utilize a builder pattern for constructing and signing transactions with support for various actions.

• Blockchain Interaction: Communicate with the NEAR blockchain using the provided JSON RPC provider to query data or send transactions.

• Cryptographic Utilities: Access cryptographic functions for key generation, signing, and verification. (Rexport for easy access to existing near-crypto crate.)

• NEAR Blockchain Primitives: Work directly with NEAR blockchain primitives for low-level operations. (Rexport for easy access to existing near-primitives crate.)

Getting Started

Add the following to your Cargo.toml file:

[dependencies]
near-api-lib = "0.1.0-alpha"

Usage

use near_api_lib::primitives::types::{AccountId, Balance, Gas};
use near_api_lib::Account;
use near_api_lib::InMemorySigner;
use near_api_lib::JsonRpcProvider;

use serde_json::json;
use std::sync::Arc;

mod utils;

#[tokio::main]
async  fn main() -> Result<(), Box<dyn std::error::Error>> {

env_logger::init();
let signer_account_id: AccountId = utils::input("Enter the signer Account ID: ")?.parse()?;
let signer_secret_key = utils::input("Enter the signer's private key: ")?.parse()?;
//To-do, implement account exist check.
let new_account_id: AccountId = utils::input("Enter new account name: ")?.parse()?;
let signer = InMemorySigner::from_secret_key(signer_account_id.clone(), signer_secret_key);

  
let gas: Gas = 100_000_000_000_000; // Example amount in yoctoNEAR
// Amount to transfer to the new account
let amount: Balance = 10_000_000_000_000_000_000_000; // Example amount in yoctoNEAR

  
let new_secret_key = near_crypto::SecretKey::from_random(near_crypto::KeyType::ED25519);
let provider = Arc::new(JsonRpcProvider::new("https://rpc.testnet.near.org"));
let signer = Arc::new(signer);

  

let account = Account::new(signer_account_id, signer, provider);
let contract_id: AccountId = "testnet".parse::<AccountId>()?;
let method_name = "create_account".to_string();

let args_json = json!({
"new_account_id": new_account_id,
"new_public_key": new_secret_key.public_key()
});

let result = account
.function_call(contract_id, method_name, args_json, gas, amount)
.await;


println!("Response: {:#?}", result);
println!("New Account ID: {}", new_account_id);
println!("Secret Key: {}", new_secret_key);

Ok(())
}

Examples

The crate includes examples that demonstrate how to use various features. To run an example, use the following command: cargo run --example <example_name>

For instance, to test the create_account function: cargo run --example create_account

Contributing

We welcome contributions to the near-api-lib crate! Please feel free to submit pull requests or open issues to suggest improvements or add new features.