kit/middleware/validate/validate.go

package validate

import (
	"context"
	"git.diulo.com/mogfee/kit/errors"
	"git.diulo.com/mogfee/kit/middleware"
	"strings"
)

func Server() middleware.Middleware {
	return func(handler middleware.Handler) middleware.Handler {
		return func(ctx context.Context, a any) (any, error) {
			if v, ok := a.(interface {
				Validate() error
			}); ok {
				if err := v.Validate(); err != nil {
					if a, ok := err.(interface {
						Field() string
						Reason() string
					}); ok {
						field := a.Field()
						return nil, errors.BadRequest("InvalidArgument", "").WithMetadata(map[string]string{
							strings.ToLower(field[0:1]) + field[1:]: a.Reason(),
						})
					}
				}
			}
			return handler(ctx, a)
		}
	}
}