//
//  Block.swift
//  Blockchain
//
//  Created by Victor BODINAUD on 27/02/2020.
//  Copyright © 2020 Victor BODINAUD. All rights reserved.
//

import Foundation
import CryptoSwift

class Block {
    var hash: String
    var data: String
    var previousHash: String
    var index: Int
    var nonce: Int
    var timestamp: Int
    
    /**
        Initialize a block with the provided parts and specifications.
     
        - parameters:
            - hash: The hash of the block
            - data: The data of the block
            - previousHash: The hash of the previous block
            - index: The index of the block
            - nonce: The nonce of the block
            - timestamp: The timestamp of the block
     
        - returns: A beautiful new block for the blockchain.
     */
    init(hash: String = "", data: String = "", previousHash: String = "", index: Int = 0, nonce: Int = 0, timestamp: Int = 0) {
        self.data = data
        self.previousHash = previousHash
        self.index = index
        self.nonce = nonce
        self.timestamp = timestamp
        self.hash = hash
    }
    
    /**
        Generate the hash of the block.
     
        - returns: The hash of the block
     */
    func generateHash() -> String {
        return data.sha256()
    }
    
    /**
        Generate the timestamp of the block
     
        - returns: The timestamp of the block
     */
    func generateTimestamp() -> Int {
        return Int(Date().timeIntervalSince1970)
    }
}