# Responsable Errors

This is a small go library that provides errors that can be more useful in the context of a web app.

## Overview

Use this library to wrap errors so that an error handler in your web app can use them in a response.

I plan to create a middleware library for Gin soon to utilize this library.

## Installation

Use go modules.

```go
import errors "codeberg.org/danjones000/responsable-errors"
```

## Usage

```go
err := SomethingThatReturnsAnError()
err = errors.Errorf(418, "I am a teapot. %w", err)

// Later on, when you're returning something
// This example uses gin.
c.JSON(err.GetStatus(), gin.H{"error":err.GetMsg()})
```

Or:

```go
user, err := db.GetUser(id)
if err != nil {
    return errors.NotFound("%w", err).Msg("User %d not found", id)
}
```

In the second example, `err.GetStatus()` returns 404, `err.GetMsg()` returns "User XX not found", and `err.Error()` returns the error message from the original error. Also, `err.Unwrap()` will return the original error, but you'll have to type cast to `UnwrappableError` first.

## Future plans

I'm thinking about making the errors able to return a default body from `json.Marshal`, possibly with an optional override.`