✨ Enhance blockchain

SwiftChainCore/Models/AccountManager.swift

@@ -0,0 +1,66 @@
+//
+//  AccountManager.swift
+//  SwiftChain
+//
+//  Created by Victor on 27/11/2024.
+//
+
+public class AccountManager {
+    private var accounts: [String: Account] = [:]
+    private let miningReward = 50
+
+    func getAccount(_ address: String) -> Account {
+        if let account = accounts[address] {
+            return account
+        }
+        let newAccount = Account(id: address, balance: 0)
+        accounts[address] = newAccount
+        return newAccount
+    }
+
+    func canProcessTransaction(_ transaction: Transaction) -> Bool {
+        if transaction.type == "MINING_REWARD" {
+            return true
+        }
+
+        let senderAccount = getAccount(transaction.sender)
+        return senderAccount.balance >= transaction.amount
+    }
+
+    func processTransaction(_ transaction: Transaction) -> Bool {
+        if !canProcessTransaction(transaction) {
+            return false
+        }
+
+        if transaction.type == "MINING_REWARD" {
+            let minerAccount = getAccount(transaction.receiver)
+            minerAccount.balance += miningReward
+            return true
+        }
+
+        let senderAccount = getAccount(transaction.sender)
+        let receiverAccount = getAccount(transaction.receiver)
+
+        senderAccount.balance -= transaction.amount
+        receiverAccount.balance += transaction.amount
+
+        return true
+    }
+
+    func getBalance(_ address: String) -> Int {
+        return getAccount(address).balance
+    }
+
+    func processBlock(_ block: Block) -> Bool {
+        let tempAccounts = accounts
+
+        for transaction in block.transactions {
+            if !processTransaction(transaction) {
+                accounts = tempAccounts
+                return false
+            }
+        }
+
+        return true
+    }
+}