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added new function send_fixed_final_bal (#12)

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cmasta9
2025-08-07 18:42:08 -05:00
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parent ac3c85f90d
commit ed0cdd810d
2 changed files with 30 additions and 1 deletions
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2
README.md
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@@ -3,7 +3,7 @@
> ~~how to buy banani from beatrice~~
> how to install banani on react.js
Banani is a library for the Banano cryptocurrency that will support sending, receiving, changing rep, RPC calls, message signing, wallet management, etc. It aims to be a more powerful and sensible version of @bananocoin/bananojs. Banani takes heavy inspiration from the Python [bananopie](https://github.com/stjet/bananopie) (which I also wrote), which in turn takes some inspiration from my experiences with ethers.js.
Banani is a library for the Banano cryptocurrency that will support sending, receiving, changing rep, RPC calls, message signing, wallet management, etc. It aims to be a more powerful and sensible version of @bananocoin/bananojs. Banani takes heavy inspiration from the Python [bananopie](https://github.com/stjet/bananopie) (which I [prussia] also wrote), which in turn takes some inspiration from my experiences with ethers.js.
**Please report any bugs or request features by opening an Github issue.** You can ask for help or ask questions in the #frankensteins-lab channel of the Banano discord and people will be typically be eager to assist if they can.

29
wallet.ts
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@@ -94,6 +94,35 @@ export class Wallet {
const block = { ...block_ns, signature, work };
return await this.send_process(block, "send");
}
/* Send by passing in a fixed final balance */
async send_fixed_final_bal(to: Address, end_bal: util.Whole, gen_work?: boolean, representative?: Address, cached_account_info?: AccountInfoRPC): Promise<BlockHash> {
const raw_end = util.whole_to_raw(end_bal, this.rpc.DECIMALS);
const info = cached_account_info ?? (await this.get_account_info(undefined, true)); //this should be lazy. the true makes sure representative is included
const pub_receive = util.get_public_key_from_address(to);
if (representative === undefined) {
if (info.representative === undefined) throw Error("Missing field 'representative' in `cached_account_info`");
representative = info.representative;
}
if (raw_end < 0n) {
throw Error(`End balance cannot be negative`);
}
const block_ns: BlockNoSignature = {
type: "state",
account: this.address,
previous: info.frontier,
representative,
balance: raw_end.toString() as `${number}`, //you gotta trust me here typescript
//link is public key of account to send to
link: pub_receive,
link_as_account: to,
};
const s_block_hash = util.hash_block(block_ns); //block hash of the send block
let work = undefined;
if (gen_work && this.work_function) work = await this.work_function(info.frontier);
const signature = util.sign_block_hash(this.private_key, s_block_hash);
const block = { ...block_ns, signature, work };
return await this.send_process(block, "send");
}
/* Send all Bananos */
async send_all(to: Address, work?: boolean, representative?: Address): Promise<BlockHash> {
const info = await this.get_account_info(undefined, true);