package lagoon

import (
	"context"
	"crypto/rand"
	"encoding/base64"

	"git.golem15.com/golem15/summercms/modules/bonfire"
)

// GenerateAppKey returns a fresh app.key: 32 random bytes from crypto/rand,
// base64 (standard encoding) encoded, 44 characters. It is the value
// key:generate prints, without the output decoration.
func GenerateAppKey() (string, error) {
	key := make([]byte, encryptedKeySize)
	if _, err := rand.Read(key); err != nil {
		return "", err
	}
	return base64.StdEncoding.EncodeToString(key), nil
}

// KeyGenerateCommand prints a fresh 32-byte base64 app.key and performs no
// other side effect (D-11).
func KeyGenerateCommand() bonfire.Command {
	return bonfire.Command{
		Name:        "key:generate",
		Description: "Print a fresh 32-byte base64 app.key",
		Run: func(ctx context.Context, in bonfire.Input, out bonfire.Output) error {
			key, err := GenerateAppKey()
			if err != nil {
				return err
			}
			out.Success(key)
			return nil
		},
	}
}