const {
  AppError,
  handleError,
  ErrorCreators,
  expressErrorHandler,
  asyncHandler,
} = require("error-shield");

// 1️⃣ Throw meaningful errors
throw ErrorCreators.notFound("User not found", { userId: 42 });

// 2️⃣ Handle & format any error
const details = handleError(new Error("Oops"), { includeStack: true });

// 3️⃣ Plug into Express with one line
app.use(expressErrorHandler({ includeTimestamp: true }));

const { AppError, handleError } = require("error-shield");

const error = new AppError("Something went wrong", 500, "CUSTOM_ERROR", {
  userId: 123,
  action: "updateProfile",
});

const errorDetails = handleError(error, {
  includeStack: true,
  includeTimestamp: true,
});

console.log(errorDetails);

const { ErrorCreators } = require("error-shield");

// 🔴 400 — Bad Request
throw ErrorCreators.badRequest("Invalid input provided", { field: "email" });

// 🔒 401 — Unauthorized
throw ErrorCreators.unauthorized("Authentication required");

// 🔍 404 — Not Found
throw ErrorCreators.notFound("User not found", { userId: 123 });

// ✏️ 422 — Validation Error
throw ErrorCreators.validationError("Email is required", { field: "email" });

// 🚦 429 — Too Many Requests
throw ErrorCreators.tooManyRequests("Rate limit exceeded", { retryAfter: 60 });

// 💥 500 — Internal Server Error
throw ErrorCreators.internalServerError("Unexpected failure");

const express = require("express");
const {
  expressErrorHandler,
  asyncHandler,
  ErrorCreators,
} = require("error-shield");

const app = express();

// Your routes — errors are automatically caught & forwarded
app.get(
  "/users/:id",
  asyncHandler(async (req, res) => {
    const user = await getUserById(req.params.id);
    if (!user) {
      throw ErrorCreators.notFound("User not found", { userId: req.params.id });
    }
    res.json(user);
  }),
);

// ⬇️ Error handler middleware (must be last)
app.use(
  expressErrorHandler({
    includeStack: process.env.NODE_ENV !== "production",
    includeTimestamp: true,
  }),
);

app.listen(3000, () => console.log("🚀 Server running on port 3000"));

const { asyncHandler } = require("error-shield");

// ❌ Without asyncHandler
app.get("/api/data", async (req, res, next) => {
  try {
    const data = await fetchData();
    res.json(data);
  } catch (err) {
    next(err); // easy to forget!
  }
});

// ✅ With asyncHandler — clean & safe
app.get(
  "/api/data",
  asyncHandler(async (req, res) => {
    const data = await fetchData();
    res.json(data);
  }),
);

const { handleError } = require("error-shield");

const errorDetails = handleError(error, {
  logger: (details) => {
    console.error("[ERROR]", details.message);
    // 📤 Send to your logging service
    Sentry.captureException(details);
  },
});

// Signature for all creators:
ErrorCreators.methodName(message?, context?)
// → Returns: AppError