package forms

import (
	"net/http"
	"strconv"
)

/* strFromPtr converts string pointer to a string */
func strFromPtr(str *string) (s string) {
	if str != nil {
		s = *str
	}
	return
}

/* Generate new CharField field with type text */
func NewCharField(name string, value *string) *FormField {
	return &FormField{
		Name:  name,
		Value: strFromPtr(value),
		Kind:  "text",
	}
}

/* Generate new integer type field */
func NewIntField(name string, value int) *FormField {
	field := FormField{
		Name:  name,
		Value: strconv.Itoa(value),
		Kind:  "text",
	}
	field.AddValidator(ValidInt)
	return &field
}

/* Generate new password field */
func NewPasswordField(name string) *FormField {
	return &FormField{
		Name: name,
		Kind: "password",
	}
}

/* Generate a new checkbox field */
func NewCheckboxField(name string, checked bool) *FormField {
	return &FormField{
		Name:    name,
		Checked: checked,
		Kind:    "checkbox",
	}
}

/* Generate new select field */
func NewSelectField(name string, items []string, value string) *FormField {
	return &FormField{
		Name:   name,
		Select: items,
		Value:  value,
		Kind:   "select",
	}
}

/* Generate a new CSRF field */
func NewCsrfField(w http.ResponseWriter, r *http.Request, secure bool) *FormField {
	return &FormField{
		Name:   csrfFieldName,
		Value:  csrfToken(w, r, secure),
		Kind:   "hidden",
		Sticky: true,
		Validators: ValidatorsList{
			ValidCSRF(r),
		},
	}
}

/* Generate a new hidden text field */
func NewHiddenField(name string, value *string) *FormField {
	return &FormField{
		Name:  name,
		Value: strFromPtr(value),
		Kind:  "hidden",
	}
}