手动计算UTXO

原创
2019/11/06 10:11
阅读数 36
const TX_TYPE_IN = 1;
const TX_TYPE_OUT = 2;

export const CreateUtxos = async (address: string, data: any) => {
    let mapData = new Map();
    let temp = new Map();
    for (const iter of data) {
        mapData.set(iter.hash, iter);
        // console.log(iter.hash);
        let type = TX_TYPE_IN;
        for (const input of iter.inputs) {
            if (input.coin.coinbase) continue;
            if (address == input.coin.address) {
                type = TX_TYPE_OUT;
            }
        }
        let out = -1;
        let balance = 0;
        for (const output of iter.outputs) {
            out++;
            if (address == output.address) {
                balance = output.value;
                break;
            }
        }
        temp.set(iter.hash, { type, out, balance, spentTxid: null, spentHeight: 0 });
    }

    for (const [key, value] of mapData) {
        for (const input of value.inputs) {
            if (input.coinbase) continue;
            if (temp.has(input.prevout.hash)) {
                const pre = temp.get(input.prevout.hash);
                const local = temp.get(key);
                if (pre.spentHeight <= 0 && (pre.type != local.type || local.type == TX_TYPE_OUT)) {
                    pre.spentTxid = value.hash;
                    pre.spentHeight = value.height;
                }
            }
        }
    }
    let balance = 0;
    let unspentList: Array<any> = [];
    for (const [key, value] of temp) {
        if (value.spentHeight === 0) {
            balance += value.balance;
            // console.info(key, value.out);
            unspentList.push(value);
        } /*else {
            temp.delete(key);
        }*/
    }

    // return {balance, unspentList: Array.from(temp.values())}
    return { balance, unspentList };
}

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