// app/transactions/page.tsx
"use client";

import { useState } from "react";

// mocks/transactionData.ts
export const transactionDummyData = [
  {
    id: 1,
    merchandId: 100987998,
    transactionID: 1049131973,
    user: 1,
    created: "2025-06-18 10:10:30",
    state: "FAILED",
    statusDescription: "ERR_ABOVE_LIMIT",
    pspStatusCode: 100501,
  },
  {
    id: 2,
    merchandId: 100987998,
    transactionID: 1049131973,
    user: 2,
    created: "2025-06-18 10:10:30",
    state: "FAILED",
    statusDescription: "ERR_ABOVE_LIMIT",
    pspStatusCode: 100501,
  },
  {
    id: 3,
    merchandId: 100987998,
    transactionID: 1049131973,
    user: 3,
    created: "2025-06-18 10:10:30",
    state: "FAILED",
    statusDescription: "ERR_ABOVE_LIMIT",
    pspStatusCode: 100501,
  },
];

export default function TransactionsPage() {
  const [userId, setUserId] = useState("");
  const [state, setState] = useState("");
  const [statusCode, setStatusCode] = useState("");
  const [transactions, setTransactions] = useState<any[]>([]);
  const [loading, setLoading] = useState(false);

  const fetchTransactions = async () => {
    setLoading(true);
    try {
      const url = new URL("https://api.example.com/transactions");
      if (userId) url.searchParams.append("userId", userId);
      if (state) url.searchParams.append("state", state);
      if (statusCode) url.searchParams.append("statusCode", statusCode);

      const response = await fetch(url.toString());
      const data = await response.json();
      setTransactions(data.transactions);
    } catch (error) {
      console.error("Error fetching transactions:", error);
    } finally {
      setLoading(false);
    }
  };

  return (
    <div className="p-4">
      <h1 className="text-xl font-bold mb-4">Transaction Search</h1>

      <div className="flex gap-4 mb-4">
        <div>
          <label className="block text-sm mb-1">User ID</label>
          <input
            type="text"
            value={userId}
            onChange={(e) => setUserId(e.target.value)}
            className="border p-2 rounded text-sm"
            placeholder="Filter by user ID"
          />
        </div>

        <div>
          <label className="block text-sm mb-1">State</label>
          <input
            type="text"
            value={state}
            onChange={(e) => setState(e.target.value)}
            className="border p-2 rounded text-sm"
            placeholder="Filter by state"
          />
        </div>

        <div>
          <label className="block text-sm mb-1">Status Code</label>
          <input
            type="text"
            value={statusCode}
            onChange={(e) => setStatusCode(e.target.value)}
            className="border p-2 rounded text-sm"
            placeholder="Filter by status code"
          />
        </div>

        <div className="flex items-end">
          <button
            onClick={fetchTransactions}
            disabled={loading}
            className="bg-blue-500 text-white px-4 py-2 rounded text-sm"
          >
            {loading ? "Loading..." : "Search"}
          </button>
        </div>
      </div>

      {transactions.length > 0 ? (
        <div className="border rounded overflow-hidden">
          <table className="min-w-full">
            <thead className="bg-gray-100">
              <tr>
                <th className="py-2 px-4 text-left text-sm">ID</th>
                <th className="py-2 px-4 text-left text-sm">User</th>
                <th className="py-2 px-4 text-left text-sm">State</th>
                <th className="py-2 px-4 text-left text-sm">Status Code</th>
                <th className="py-2 px-4 text-left text-sm">Created</th>
              </tr>
            </thead>
            <tbody>
              {transactions.map((tx) => (
                <tr key={tx.id} className="border-t">
                  <td className="py-2 px-4 text-sm">{tx.id}</td>
                  <td className="py-2 px-4 text-sm">{tx.user}</td>
                  <td className="py-2 px-4 text-sm">{tx.state}</td>
                  <td className="py-2 px-4 text-sm">{tx.pspStatusCode}</td>
                  <td className="py-2 px-4 text-sm">{tx.created}</td>
                </tr>
              ))}
            </tbody>
          </table>
        </div>
      ) : (
        <div className="text-center py-4 text-sm">
          {loading ? "Loading transactions..." : "No transactions found"}
        </div>
      )}
    </div>
  );
}

// mocks/handlers.ts
import { http, HttpResponse } from "msw";

export const handlers = [
  http.get("https://api.example.com/transactions", ({ request }) => {
    const url = new URL(request.url);

    // Get query parameters
    const userId = url.searchParams.get("userId");
    const state = url.searchParams.get("state");
    const statusCode = url.searchParams.get("statusCode");

    // Filter transactions based on query parameters
    let filteredTransactions = [...transactionDummyData];

    if (userId) {
      filteredTransactions = filteredTransactions.filter(
        (tx) => tx.user.toString() === userId
      );
    }

    if (state) {
      filteredTransactions = filteredTransactions.filter(
        (tx) => tx.state.toLowerCase() === state.toLowerCase()
      );
    }

    if (statusCode) {
      filteredTransactions = filteredTransactions.filter(
        (tx) => tx.pspStatusCode.toString() === statusCode
      );
    }

    return HttpResponse.json({
      transactions: filteredTransactions,
      count: filteredTransactions.length,
    });
  }),
];