howood/kangaroochat

package validator

import (
    "context"
    "errors"
    "strings"

    "github.com/go-playground/locales/en"
    ut "github.com/go-playground/universal-translator"
    val "github.com/go-playground/validator/v10"
    en_translations "github.com/go-playground/validator/v10/translations/en"
    "github.com/howood/kangaroochat/library/utils"
)

// Validator struct
type Validator struct {
    validate *val.Validate
    trans    ut.Translator
    ctx      context.Context
}

// NewValidator creates a new Validator
func NewValidator(ctx context.Context) *Validator {
    en := en.New()
    uni := ut.New(en, en)
    trans, _ := uni.GetTranslator(utils.GetOsEnv("VALIDATE_LANG", "en"))
    I := &Validator{
        validate: val.New(),
        trans:    trans,
        ctx:      ctx,
    }
    en_translations.RegisterDefaultTranslations(I.validate, I.trans)
    return I

}

// Validate process to validate
func (v *Validator) Validate(structData interface{}) error {
    err := v.validate.Struct(structData)
    if err != nil {
        errmsg := []string{}
        errs := err.(val.ValidationErrors)
        for _, e := range errs {
            errmsg = append(errmsg, e.Translate(v.trans))
        }
        return errors.New(strings.Join(errmsg, " / "))
    }
    return nil
}