Merge pull request #8 from ShyamKrishna33/add-transactions

Create Add-Transaction Functionality

src/main/java/BudgetBuddy.java

@@ -31,6 +31,9 @@ public static void main(String[] args){
                 System.out.println("Displaying transactions:");
                 System.out.println(transactions.getTransactions());
                 break;
+            case "add":
+                transactions.processTransaction(input);
+                break;
             default:
                 System.out.println("Invalid command.");
             }

src/main/java/financemanager/TransactionList.java

@@ -1,20 +1,30 @@
 package financemanager;
 
+import parser.Parser;
 import transactions.Transaction;
 
 import java.util.ArrayList;
 
 public class TransactionList {
 
     private ArrayList<Transaction> transactions;
+    private Parser parser;
 
     public TransactionList() {
         // Initialise ArrayList in the constructor
         this.transactions = new ArrayList<>();
+        this.parser = new Parser();
     }
 
     public ArrayList<Transaction> getTransactions() {
         return transactions;
     }
 
+    private void addTransaction(Transaction t) {
+        transactions.add(t);
+    }
+
+    public void processTransaction(String input) {
+        addTransaction(parser.parseTransaction(input));
+    }
 }

src/main/java/parser/Parser.java

@@ -1,4 +1,37 @@
 package parser;
 
+import transactions.Transaction;
+
 public class Parser {
+
+    public static final int ADD_COMMAND_INDEX = 3;
+
+    public Transaction parseTransaction(String input) {
+        String data = input.substring(ADD_COMMAND_INDEX + 1);
+        String[] parseData = data.split("/");
+        String description = null;
+        String date = null;
+        String amount = null;
+        String category = null;
+        for(int i = 0; i < parseData.length; i++) {
+            switch (parseData[i].trim()) {
+            case "n":
+                description = parseData[i + 1];
+                break;
+            case "$":
+                amount = parseData[i + 1];
+                break;
+            case "d":
+                date = parseData[i + 1];
+                break;
+            case "c":
+                category = parseData[i + 1];
+                break;
+            default:
+                break;
+            }
+        }
+        assert amount != null;
+        return new Transaction(description, Float.parseFloat(amount), date, category);
+    }
 }

src/main/java/transactions/Transaction.java

@@ -5,10 +5,13 @@ public class Transaction {
     private float amount;
     private String category;
 
-    public Transaction(String description, float amount, String category) {
+    private String date;
+
+    public Transaction(String description, float amount, String category, String date) {
         this.description = description;
         this.amount = amount;
         this.category = category;
+        this.date = date;
     }
 
     public String getDescription() {
@@ -22,4 +25,8 @@ public float getAmount() {
     public String getCategory() {
         return category;
     }
+
+    public String getDate() {
+        return date;
+    }
 }