Fs02/grimoire

// Package changeset used to cast and validate data before saving it to the database.
package changeset

import (
    "reflect"

    "github.com/Fs02/grimoire/params"
)

// Changeset used to cast and validate data before saving it to the database.
type Changeset struct {
    errors      []error
    params      params.Params
    changes     map[string]interface{}
    values      map[string]interface{}
    types       map[string]reflect.Type
    constraints Constraints
    zero        bool
}

// Errors of changeset.
func (changeset *Changeset) Errors() []error {
    return changeset.errors
}

// Error of changeset, returns the first error if any.
func (changeset *Changeset) Error() error {
    if changeset.errors != nil {
        return changeset.errors[0]
    }
    return nil
}

// Get a change from changeset.
func (changeset *Changeset) Get(field string) interface{} {
    return changeset.changes[field]
}

// Fetch a change or value from changeset.
func (changeset *Changeset) Fetch(field string) interface{} {
    if change, ok := changeset.changes[field]; ok {
        return change
    }

    return changeset.values[field]
}

// Changes of changeset.
func (changeset *Changeset) Changes() map[string]interface{} {
    return changeset.changes
}

// Values of changeset.
func (changeset *Changeset) Values() map[string]interface{} {
    return changeset.values
}

// Types of changeset.
func (changeset *Changeset) Types() map[string]reflect.Type {
    return changeset.types
}

// Constraints of changeset.
func (changeset *Changeset) Constraints() Constraints {
    return changeset.constraints
}