# Vouch

`Vouch` is a lightweight, flexible validation library for Go, allowing you to define and enforce validation rules on struct fields with ease.

## Installation

```sh
go get git.trcreatives.com/triegebauer/go-vouch
```

## Usage

### Defining a Schema

A schema is a map of field names to validation rules.

```go
package main

import (
	"fmt"
	"git.trcreatives.com/triegebauer/go-vouch"
)

type User struct {
	Name  string
	Age   int
	Email string
}

func main() {
	schema := vouch.Schema{
		"Name":  vouch.Rules(vouch.Required(), vouch.MinLen(3)),
		"Age":   vouch.Rules(vouch.MinValue(18)),
		"Email": vouch.Rules(vouch.Required(), vouch.Email()),
	}

	user := User{Name: "", Age: 16, Email: "invalid-email"}

	if err := schema.Validate(user); err != nil {
		fmt.Println("Validation error:", err)
	} else {
		fmt.Println("Validation passed!")
	}
}
```

### Available Rules

- `Required()` - Ensures the field is not empty.
- `MinLen(n int)` - Ensures the field has at least `n` characters.
- `MaxLen(n int)` - Ensures the field has at most `n` characters.
- `MinValue(n float64)` - Ensures the number is at least `n`.
- `MaxValue(n float64)` - Ensures the number is at most `n`.
- `Email()` - Ensures the field is a valid email.
- `URL()` - Ensures the field is a valid URL.
- `ContainsUpper()` - Ensures the field contains at least one uppercase letter.
- `ContainsDigit()` - Ensures the field contains at least one digit.
- ...and many more!

## Contributing

Feel free to open issues or submit pull requests to improve `vouch`.

## License

MIT License