Remove unused files and implement API routes for account and transaction management

src/pages/api/transactions/index.ts

@@ -0,0 +1,56 @@
+import type { APIRoute } from "astro";
+import { transactions, accounts } from "../../../data/store";
+import type { Transaction } from "../../../types";
+
+export const POST: APIRoute = async ({ request }) => {
+  try {
+    const transaction = (await request.json()) as Omit<Transaction, "id">;
+
+    // Validate required fields
+    if (
+      !transaction.accountId ||
+      !transaction.date ||
+      !transaction.description ||
+      transaction.amount === undefined
+    ) {
+      return new Response(
+        JSON.stringify({ error: "Missing required fields" }),
+        {
+          status: 400,
+          headers: { "Content-Type": "application/json" },
+        }
+      );
+    }
+
+    // Validate account exists
+    const account = accounts.find((a) => a.id === transaction.accountId);
+    if (!account) {
+      return new Response(JSON.stringify({ error: "Account not found" }), {
+        status: 404,
+        headers: { "Content-Type": "application/json" },
+      });
+    }
+
+    // Create new transaction with generated ID
+    const newTransaction: Transaction = {
+      ...transaction,
+      id: (transactions.length + 1).toString(), // Simple ID generation for demo
+    };
+
+    // Update account balance
+    account.balance += transaction.amount;
+
+    // Add to transactions array
+    transactions.push(newTransaction);
+
+    return new Response(JSON.stringify(newTransaction), {
+      status: 201,
+      headers: { "Content-Type": "application/json" },
+    });
+  } catch (error) {
+    return new Response(JSON.stringify({ error: "Invalid request body" }), {
+      status: 400,
+      headers: { "Content-Type": "application/json" },
+    });
+  }
+};