BlockChain/block.h at main · Zeratal/BlockChain · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
#pragma once

#include <string>
#include <vector>
#include <memory>
#include "transaction.h"
#include "merkletree.h"
#include <nlohmann/json.hpp>

class Block {
public:
    Block(int index, const std::vector<Transaction>& transactions, const std::string& previousHash);
    Block(const nlohmann::json& json);

    std::string calculateHash() const;
    void mineBlock(int difficulty);
    bool isValid() const;

    // Getters
    int getIndex() const { return index_; }
    std::string getTimestamp() const { return timestamp_; }
    std::string getPreviousHash() const { return previousHash_; }
    std::string getHash() const { return hash_; }
    int getNonce() const { return nonce_; }
    std::string getMerkleRoot() const { return merkleRoot_; }
    const std::vector<Transaction>& getTransactions() const { return transactions_; }
    const std::map<std::string, double>& getBalanceChanges() const { return balanceChanges_; }
    void setBalanceChanges(const std::map<std::string, double>& balanceChanges) { balanceChanges_ = balanceChanges; }

    // 将区块转换为 JSON 字符串
    std::string toJson() const;
    bool verifyDifficulty(int difficulty) const;
private:

    std::map<std::string, double> balanceChanges_;  // 记录每个地址的余额变更

    int index_;
    std::string timestamp_;
    std::vector<Transaction> transactions_;
    std::string previousHash_;
    std::string hash_;
    int nonce_;
    std::string merkleRoot_;

    static std::string sha256(const std::string& str);
};