commandLine.go

package main

import (
	"fmt"
	"log"
	"time"
)

func (cli *CLI) PrintBlockChain() {
	bc := cli.bc
	iterator := bc.NewIterator()
	for {
		// 返回区块，游标左移
		block := iterator.Next()
		date := time.Unix(int64(block.TimeStamp), 0).Format("2006-01-02 15:04:05")
		fmt.Printf("===== 当前区块高度 %d =====\n", 0)
		fmt.Printf("终端版本: %d\n", block.Version)
		fmt.Printf("前区块hash值: %x\n", block.PrevHash)
		fmt.Printf("梅克尔根hash值: %x\n", block.MerkelRoot)
		fmt.Printf("块产生时间: %s\n", date)
		fmt.Printf("块难度: %d\n", block.Difficulty)
		fmt.Printf("随机数: %d\n", block.Nonce)
		fmt.Printf("当前区块hash值: %x\n", block.Hash)
		fmt.Printf("当前区块数据: %s\n", block.Transactions[0].TxInputs[0].PubKey)

		if len(block.PrevHash) == 0 {
			break
		}
	}
}

func (cli *CLI) PrintTransactions() {
	bc := cli.bc
	iterator := bc.NewIterator()
	for {
		// 返回区块，游标左移
		block := iterator.Next()
		for _, tx := range block.Transactions {
			txStr := tx.String()
			fmt.Println(txStr)
		}

		if len(block.PrevHash) == 0 {
			break
		}
	}
}

func (cli *CLI) GetBalance(addr string) {
	// 1. 校验地址
	if !IsValidAddress(addr) {
		log.Printf("address %s is invalid\n", addr)
		return
	}

	// 2. 生成公钥hash
	pubKeyHash := GetPubKeyFromAddress(addr)
	utxos := cli.bc.FindUTXOs(pubKeyHash)

	amount := 0.0
	for _, utxo := range utxos {
		amount += utxo.Amount
	}
	log.Printf("%s balance: %f\n", addr, amount)
}

func (cli *CLI) Send(from, to string, amount float64, miner, data string) {
	// 1. 创建挖矿交易
	coinbase := NewCoinBaseTx(miner, data)
	// 2. 创建一个普通交易
	tx := NewTransaction(from, to, amount, cli.bc)
	if coinbase == nil || tx == nil {
		return
	}
	// 3. 添加到区块
	cli.bc.AddBlock([]*Transaction{coinbase, tx})
}

func (cli *CLI) NewWallet() {
	wallets := NewWallets()
	address := wallets.CreateWallet()
	fmt.Printf("your new address: %s\n", address)
}

func (cli *CLI) ListAddress() {
	wallets := NewWallets()
	addresses := wallets.GetAllAddress()
	fmt.Println("Tips: the order of all list addresses is random!")
	for i, addr := range addresses {
		fmt.Printf("wallet[%d]: %s\n", i, addr)
	}
}