import { HalLink } from './hal';
/**
 * HAL-Forms Template.
 *
 * @see http://rwcbook.github.io/hal-forms/
 */
export interface HalFormsTemplate {
    /**
     * Mime-type for the form.
     *
     * If omitted, application/json should be assumed
     */
    contentType?: string;
    /**
     * HTTP Method
     */
    method: string;
    /**
     * List of properties in this HAL Form.
     *
     * If this is not set, the implication is that there are no properties.
     */
    properties?: HalFormsProperty[];
    /**
     * Human-readable title for the form
     */
    title?: string;
    /**
     * Default destination endpoint for the form.
     */
    target?: string;
}
/**
 * HAL-Forms property
 *
 * This type describes a single field in HAL-Forms
 */
export interface HalFormsBaseProperty {
    /**
     * Name of the form field
     */
    name: string;
    /**
     * Human-readable label for the field
     */
    prompt?: string;
    /**
     * The property type.
     *
     * If not specified, this should default to 'text'.
     * This list corresponds with HTML5 input types.
     */
    type?: string;
    /**
     * Regular expression for validation the input
     */
    regex?: string;
    /**
     * Is this a required field?
     *
     * Defaults to false.
     */
    required?: boolean;
    /**
     * Is the field read-only?
     */
    readOnly?: boolean;
    /**
     * Whether the value element contains a URI Template.
     *
     * Defaults to false.
     */
    templated?: boolean;
    /**
     * Default or pre-existing value for the field
     */
    value?: string;
    /**
     * Equivalent of the HTML placeholder attribute.
     *
     * Shows a default value in a form control before the user entered any value.
     * This value disappears immediately after a user starts typing.
     */
    placeholder?: string;
}
export type HalFormsProperty = HalFormsRangeProperty | HalFormsSimpleProperty | HalFormsTextAreaProperty;
/**
 * Basic HAL-Forms property
 *
 * This type describes a basic HAL forms property.
 */
export interface HalFormsSimpleProperty extends HalFormsBaseProperty {
    /**
     * The property type.
     *
     * If not specified, this should default to 'text'.
     * This list corresponds with HTML5 input types.
     */
    type?: 'hidden' | 'text' | 'search' | 'tel' | 'url' | 'email' | 'password' | 'color' | 'radio' | 'checkbox';
    /**
     * Minimum length for he value.
     *
     * Useful for string values.
     */
    minLength?: number;
    /**
     * Maximum value for the property.
     *
     * Useful for string values.
     */
    maxLength?: number;
    /**
     * Options is an experimental feature.
     *
     * This structure is likely to change. This is for experimentation/testing purposes only!
     */
    options?: HalFormsOptions;
}
/**
 * Range HAL-Forms property.
 *
 * This type describes a HAL forms fiels that is has a range, such as numbers and dates.
 * These properties have a min, max and step property.
 *
 * This type describes a basic HAL forms property.
 */
export interface HalFormsRangeProperty extends HalFormsBaseProperty {
    /**
     * The property type.
     *
     * If not specified, this should default to 'text'.
     * This list corresponds with HTML5 input types.
     */
    type: 'date' | 'month' | 'week' | 'time' | 'datetime-local' | 'number' | 'range';
    /**
     * Minimum value for the property.
     *
     * Useful for things like numbers and dates.
     */
    min?: number;
    /**
     * Maximum value for the property.
     *
     * Useful for things like numbers and dates.
     */
    max?: number;
    /**
     * Step value.
     *
     * For example, if set to 10 this will enforce that the value can only be a
     * multiple of 10.
     */
    step?: number;
}
/**
 * TextArea HAL forms property
 *
 * This type describes a 'textarea' HAL forms field.
 */
export interface HalFormsTextAreaProperty extends HalFormsBaseProperty {
    /**
     * The property type.
     *
     * If not specified, this should default to 'text'.
     * This list corresponds with HTML5 input types.
     */
    type: 'textarea';
    /**
     * For the 'textarea' type, specifies the number of columns when rendering the textarea
     */
    rows?: number;
    /**
     * For the 'textarea' type, specifies the number of rows when rendering the textarea
     */
    cols?: number;
    /**
     * Minimum length for he value.
     *
     * Useful for string values.
     */
    minLength?: number;
    /**
     * Maximum value for the property.
     *
     * Useful for string values.
     */
    maxLength?: number;
}
/**
 * HalFormsOptions is the 'options' property on fields.
 */
type HalFormsOptions = HalFormsOptionsDataSource & HalFormsOptionsMultiple;
/**
 * Helper type for the 'multiple' property and side-effects of it being set./
 */
type HalFormsOptionsMultiple = {
    /**
     * Allow the user to select exactly 1 value, or more than 1.
     */
    multiple?: false;
    /**
     * Current value of the field. This overrides value from the 'parent'.
     */
    selectedValues?: string | number | boolean;
    /**
     * If the data source is an array of objects, use this property for the
     * label.
     *
     * If this is not set, 'prompt' is assumed.
     */
    promptField?: string;
    /**
     * If the data source is an array of objects, use this property for the
     * value
     *
     * If this is not set, 'value' is assumed.
     */
    valueField?: string;
} | {
    /**
     * Allow the user to select exactly 1 value, or more than 1.
     */
    multiple: true;
    /**
     * Current value of the field. This overrides value from the 'parent'.
     */
    selectedValues?: (string | number | boolean)[];
    /**
     * If provided, this will require a minimum number of items to be selected.
     * By default this is 0 if the property is optional, and 1 if it's required.
     */
    minItems?: number;
    /**
     * If provided, this will require a maximum number of items to be selected.
     * By default, there is no upper bound.
     */
    maxItems?: number;
    /**
     * If the data source is an array of objects, use this property for the
     * label.
     *
     * If this is not set, 'prompt' is assumed.
     */
    promptField?: string;
    /**
     * If the data source is an array of objects, use this property for the
     * value
     *
     * If this is not set, 'value' is assumed.
     */
    valueField?: string;
};
/**
 * Helper type for determining the data source for an 'options' property.
 *
 * The data source is either in-line, or fetched from an online source
 */
type HalFormsOptionsDataSource = HalFormsOptionsInline | HalFormsOptionsLink;
/**
 * Helper type for determining the data source for an 'options' property.
 *
 * The data source is either in-line, or fetched from an online source
 */
export type HalFormsOptionsInline = {
    /**
     * List of possible values.
     *
     * Only one of 'inline' or 'link' should be used.
     */
    inline: Record<string, string>[] | string[];
};
/**
 * Helper type for determining the data source for an 'options' property.
 *
 * The data source is either in-line, or fetched from an online source
 */
export type HalFormsOptionsLink = {
    /**
     * If link is provided, clients should fetch the list of possible options
     * from this external location.
     *
     * Only one of 'inline' or 'link' should be used.
     */
    link: HalLink;
};
export {};