#ifndef BTCEXPLORER_BLOCK_H
#define BTCEXPLORER_BLOCK_H

#include <cstdint>
#include <array>
#include <vector>

#include "Transaction.h"

enum BlockMagic: uint32_t {
    Mainnet = 0xf9beb4d9,
    Testnet3 = 0x0b110907,
    Regtest = 0xfabfb5da
};

struct PreBlockHeader {
    BlockMagic magic;
    uint32_t blockSize;
};

struct BlockHeader {
    uint32_t  version;
    std::array<uint8_t,32> prevBlockHeaderHash;
    std::array<uint8_t,32> merkleRootHash;
    uint32_t time;
    uint32_t nBits;
    uint32_t nOnce;
};

class Block {
private:
    BlockHeader _header;
    std::vector<Transaction> _transactions;
    size_t _size;

public:
    Block(const std::byte* pBlock, size_t size);
    [[nodiscard]] uint32_t version() const;
    [[nodiscard]] uint32_t time() const;
    [[nodiscard]] const std::vector<Transaction>& transactions() const;
    [[nodiscard]] size_t size() const;
    [[nodiscard]] std::string prevHeaderHash() const;
};

#endif //BTCEXPLORER_BLOCK_H