import type {
  ButtonHTMLAttributes,
  ChangeEvent,
  ComponentType,
  FocusEvent,
  HTMLAttributes,
  ReactElement,
  ReactNode,
  StyleHTMLAttributes,
} from 'react';
import { JSONSchema7 } from 'json-schema';

import { TranslatableString } from './enums';

/** The representation of any generic object type, usually used as an intersection on other types to make them more
 * flexible in the properties they support (i.e. anything else)
 */
export type GenericObjectType = {
  [name: string]: any;
};

/** Map the JSONSchema7 to our own type so that we can easily bump to a more recent version at some future date and only
 * have to update this one type.
 */
export type StrictRJSFSchema = JSONSchema7;

/** Allow for more flexible schemas (i.e. draft-2019) than the strict JSONSchema7
 */
export type RJSFSchema = StrictRJSFSchema & GenericObjectType;

/** Alias GenericObjectType as FormContextType to allow us to remap this at some future date
 */
export type FormContextType = GenericObjectType;

/** The interface for the test ID proxy objects that are returned by the `getTestId` utility function.
 */
export type TestIdShape = Record<string, string>;

/** Function to generate HTML name attributes from path segments */
export type NameGeneratorFunction = (path: FieldPathList, idPrefix: string, isMultiValue?: boolean) => string;

/** Experimental feature that specifies the Array `minItems` default form state behavior
 */
export type Experimental_ArrayMinItems = {
  /** Optional enumerated flag controlling how array minItems are populated, defaulting to `all`:
   * - `all`: Legacy behavior, populate minItems entries with default values initially and include an empty array when
   *        no values have been defined.
   * - `requiredOnly`: Ignore `minItems` on a field when calculating defaults unless the field is required.
   * - `never`: Ignore `minItems` on a field even the field is required.
   */
  populate?: 'all' | 'requiredOnly' | 'never';
  /** A function that determines whether to skip populating the array with default values based on the provided validator,
   * schema, and root schema.
   * If the function returns true, the array will not be populated with default values.
   * If the function returns false, the array will be populated with default values according to the `populate` option.
   * @param validator - An implementation of the `ValidatorType` interface that is used to detect valid schema conditions
   * @param schema - The schema for which resolving a condition is desired
   * @param [rootSchema] - The root schema that will be forwarded to all the APIs
   * @returns A boolean indicating whether to skip populating the array with default values.
   */
  computeSkipPopulate?: <T = any, S extends StrictRJSFSchema = RJSFSchema, F extends FormContextType = any>(
    validator: ValidatorType<T, S, F>,
    schema: S,
    rootSchema?: S,
  ) => boolean;
  /** When `formData` is provided and does not contain `minItems` worth of data, this flag (`false` by default) controls
   * whether the extra data provided by the defaults is appended onto the existing `formData` items to ensure the
   * `minItems` condition is met. When false (legacy behavior), only the `formData` provided is merged into the default
   * form state, even if there are fewer than the `minItems`. When true, the defaults are appended onto the end of the
   * `formData` until the `minItems` condition is met.
   */
  mergeExtraDefaults?: boolean;
};

/** Experimental features to specify different default form state behaviors. Currently, this affects the
 * handling of optional array fields where `minItems` is set and handling of setting defaults based on the
 * value of `emptyObjectFields`. It also affects how `allOf` fields are handled and how to handle merging defaults into
 * the formData in relation to explicit `undefined` values via `mergeDefaultsIntoFormData`.
 */
export type Experimental_DefaultFormStateBehavior = {
  /** Optional object, that controls how the default form state for arrays with `minItems` is handled. When not provided
   * it defaults to `{ populate: 'all' }`.
   */
  arrayMinItems?: Experimental_ArrayMinItems;
  /** Optional enumerated flag controlling how empty object fields are populated, defaulting to `populateAllDefaults`:
   * - `populateAllDefaults`: Legacy behavior - set default when there is a primitive value, an non-empty object field,
   *        or the field itself is required  |
   * - `populateRequiredDefaults`: Only sets default when a value is an object and its parent field is required, or it
   *        is a primitive value and it is required |
   * - `skipDefaults`: Does not set defaults                                                                                                      |
   * - `skipEmptyDefaults`: Does not set an empty default. It will still apply the default value if a default property is defined in your schema.                                                                                                 |
   */
  emptyObjectFields?: 'populateAllDefaults' | 'populateRequiredDefaults' | 'skipDefaults' | 'skipEmptyDefaults';
  /**
   * Optional flag to compute the default form state using allOf and if/then/else schemas. Defaults to `skipDefaults'.
   */
  allOf?: 'populateDefaults' | 'skipDefaults';
  /** Optional enumerated flag controlling how the defaults are merged into the form data when dealing with undefined
   * values, defaulting to `useFormDataIfPresent`.
   * NOTE: If there is a default for a field and the `formData` is unspecified, the default ALWAYS merges.
   * - `useFormDataIfPresent`: Legacy behavior - Do not merge defaults if there is a value for a field in `formData`,
   *        even if that value is explicitly set to `undefined`
   * - `useDefaultIfFormDataUndefined`: - If the value of a field within the `formData` is `undefined`, then use the
   *        default value instead
   */
  mergeDefaultsIntoFormData?: 'useFormDataIfPresent' | 'useDefaultIfFormDataUndefined';
  /** Optional enumerated flag controlling how const values are merged into the form data as defaults when dealing with
   * undefined values, defaulting to `always`. The defaulting behavior for this flag will always be controlled by the
   * `emptyObjectField` flag value. For instance, if `populateRequiredDefaults` is set and the const value is not
   * required, it will not be set.
   * - `always`: A const value will always be merged into the form as a default. If there is are const values in a
   *        `oneOf` (for instance to create an enumeration with title different from the values), the first const value
   *        will be defaulted
   * - `skipOneOf`: If const is in a `oneOf` it will NOT pick the first value as a default
   * - `never`: A const value will never be used as a default
   *
   */
  constAsDefaults?: 'always' | 'skipOneOf' | 'never';
};

/** Optional function that allows for custom merging of `allOf` schemas
 * @param schema - Schema with `allOf` that needs to be merged
 * @returns The merged schema
 */
export type Experimental_CustomMergeAllOf<S extends StrictRJSFSchema = RJSFSchema> = (schema: S) => S;

/** The interface representing a Date object that contains an optional time */
export interface DateObject {
  /** The year of the Date */
  year: number;
  /** The month of the Date */
  month: number;
  /** The day of the Date */
  day: number;
  /** The optional hours for the time of a Date */
  hour?: number;
  /** The optional minutes for the time of a Date */
  minute?: number;
  /** The optional seconds for the time of a Date */
  second?: number;
}

/** Properties describing a Range specification in terms of attribute that can be added to the `HTML` `<input>` */
export type RangeSpecType = {
  /** Specifies the interval between legal numbers in an input field */
  step?: number;
  /** Specifies a minimum value for an <input> element */
  min?: number;
  /** Specifies the maximum value for an <input> element */
  max?: number;
};

/** Properties describing a Range specification in terms of attribute that can be added to the `HTML` `<input>` */
export type InputPropsType = Omit<RangeSpecType, 'step'> & {
  /** Specifies the type of the <input> element */
  type: string;
  /** Specifies the interval between legal numbers in an input field or "any" */
  step?: number | 'any';
  /** Specifies the `autoComplete` value for an <input> element */
  autoComplete?: HTMLInputElement['autocomplete'];
  /** Specifies a filter for what file types the user can upload. */
  accept?: HTMLInputElement['accept'];
};

/** The list of path elements that represents where in the schema a field is located. When the item in the field list is
 * a string, then it represents the name of the property within an object. When it is a number, then it represents the
 * index within an array.
 *
 * For example:
 * `[]` represents the root object of the schema
 * `['foo', 'bar']` represents the `bar` element contained within the `foo` element of the schema
 * `['baz', 1]` represents the second element in the list `baz` of the schema
 */
export type FieldPathList = (string | number)[];

/** Type describing an id and path used for a field */
export type FieldPathId = {
  /** The id for a field */
  $id: string;
  /** The path for a field */
  path: FieldPathList;
  /** The optional HTML name attribute for a field, generated by nameGenerator if provided */
  name?: string;
};

/** Type describing a name used for a field in the `PathSchema` */
export type FieldPath = {
  /** The name of a field */
  $name: string;
};

/** Type describing a recursive structure of `FieldPath`s for an object with a non-empty set of keys */
export type PathSchema<T = any> =
  T extends Array<infer U>
    ? FieldPath & {
        [i: number]: PathSchema<U>;
      }
    : T extends GenericObjectType
      ? FieldPath & {
          /** The set of names for fields in the recursive object structure */
          [key in keyof T]?: PathSchema<T[key]>;
        }
      : FieldPath;

/** The type for error produced by RJSF schema validation */
export type RJSFValidationError = {
  /** Name of the error, for example, "required" or "minLength" */
  name?: string;
  /** Message, for example, "is a required property" or "should NOT be shorter than 3 characters" */
  message?: string;
  /** An object with the error params returned by ajv
   * ([see doc](https://github.com/ajv-validator/ajv/tree/6a671057ea6aae690b5967ee26a0ddf8452c6297#error-parameters)
   * for more info)
   */
  params?: any;
  /** A string in Javascript property accessor notation to the data path of the field with the error. For example,
   * `.name` or `['first-name']`
   */
  property?: string;
  /** JSON pointer to the schema of the keyword that failed validation. For example, `#/fields/firstName/required`.
   * (Note: this may sometimes be wrong due to a [bug in ajv](https://github.com/ajv-validator/ajv/issues/512))
   */
  schemaPath?: string;
  /** Full error name, for example ".name is a required property" */
  stack: string;
  /** The title property for the failing field*/
  title?: string;
};

/** The type that describes an error in a field */
export type FieldError = string;

/** The type that describes the list of errors for a field */
export type FieldErrors = {
  /** The list of errors for the field */
  __errors?: FieldError[];
};

/** Type describing a recursive structure of `FieldErrors`s for an object with a non-empty set of keys */
export type ErrorSchema<T = any> = FieldErrors & {
  /** The set of errors for fields in the recursive object structure */
  [key in keyof T]?: ErrorSchema<T[key]>;
};

/** Type that describes the list of errors for a field being actively validated by a custom validator */
export type FieldValidation = FieldErrors & {
  /** Function that will add a new `message` to the list of errors */
  addError: (message: string) => void;
};

/** Type describing a recursive structure of `FieldValidation`s for an object with a non-empty set of keys */
export type FormValidation<T = any> = FieldValidation & {
  /** The set of validation objects for fields in the recursive object structure */
  [key in keyof T]?: FormValidation<T[key]>;
};

/** The base properties passed to various RJSF components. */
export type RJSFBaseProps<T = any, S extends StrictRJSFSchema = RJSFSchema, F extends FormContextType = any> = {
  /** The schema object for the field being described */
  schema: S;
  /** The uiSchema object for this base component */
  uiSchema?: UiSchema<T, S, F>;
  /** The `registry` object */
  registry: Registry<T, S, F>;
};

/** The properties that are passed to an `ErrorListTemplate` implementation */
export type ErrorListProps<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> = RJSFBaseProps<T, S, F> & {
  /** The errorSchema constructed by `Form` */
  errorSchema: ErrorSchema<T>;
  /** An array of the errors */
  errors: RJSFValidationError[];
};

/** The properties that are passed to an `FieldErrorTemplate` implementation */
export type FieldErrorProps<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> = RJSFBaseProps<T, S, F> & {
  /** The errorSchema constructed by `Form` */
  errorSchema?: ErrorSchema<T>;
  /** An array of the errors */
  errors?: Array<string | ReactElement>;
  /** The FieldPathId of the field in the hierarchy */
  fieldPathId: FieldPathId;
};

/** The properties that are passed to an `FieldHelpTemplate` implementation */
export type FieldHelpProps<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> = RJSFBaseProps<T, S, F> & {
  /** The help information to be rendered */
  help?: string | ReactElement;
  /** The FieldPathId of the field in the hierarchy */
  fieldPathId: FieldPathId;
  /** Flag indicating whether there are errors associated with this field */
  hasErrors?: boolean;
};

/** The properties that are passed to a `GridTemplate` */
export interface GridTemplateProps extends GenericObjectType {
  /** The contents of the grid template */
  children?: ReactNode;
  /** Optional flag indicating whether the grid element represents a column, necessary for themes which have components
   * for Rows vs Columns. NOTE: This is falsy by default when not specified
   */
  column?: boolean;
}

/** The set of `Fields` stored in the `Registry` */
export type RegistryFieldsType<T = any, S extends StrictRJSFSchema = RJSFSchema, F extends FormContextType = any> = {
  /** A `Field` indexed by `name` */
  [name: string]: Field<T, S, F>;
};

/** The set of `Widgets` stored in the `Registry` */
export type RegistryWidgetsType<T = any, S extends StrictRJSFSchema = RJSFSchema, F extends FormContextType = any> = {
  /** A `Widget` indexed by `name` */
  [name: string]: Widget<T, S, F>;
};

/** The set of RJSF templates that can be overridden by themes or users */
export type TemplatesType<T = any, S extends StrictRJSFSchema = RJSFSchema, F extends FormContextType = any> = {
  /** The template to use while rendering normal or fixed array fields */
  ArrayFieldTemplate: ComponentType<ArrayFieldTemplateProps<T, S, F>>;
  /** The template to use while rendering the description for an array field */
  ArrayFieldDescriptionTemplate: ComponentType<ArrayFieldDescriptionProps<T, S, F>>;
  /** The template to use while rendering the buttons for an item in an array field */
  ArrayFieldItemButtonsTemplate: ComponentType<ArrayFieldItemButtonsTemplateProps<T, S, F>>;
  /** The template to use while rendering an item in an array field */
  ArrayFieldItemTemplate: ComponentType<ArrayFieldItemTemplateProps<T, S, F>>;
  /** The template to use while rendering the title for an array field */
  ArrayFieldTitleTemplate: ComponentType<ArrayFieldTitleProps<T, S, F>>;
  /** The template to use while rendering the standard html input */
  BaseInputTemplate: ComponentType<BaseInputTemplateProps<T, S, F>>;
  /** The template to use for rendering the description of a field */
  DescriptionFieldTemplate: ComponentType<DescriptionFieldProps<T, S, F>>;
  /** The template to use while rendering the errors for the whole form */
  ErrorListTemplate: ComponentType<ErrorListProps<T, S, F>>;
  /** The template to use while rendering a fallback field for schemas that have an empty or unknown 'type' */
  FallbackFieldTemplate: ComponentType<FallbackFieldTemplateProps<T, S, F>>;
  /** The template to use while rendering the errors for a single field */
  FieldErrorTemplate: ComponentType<FieldErrorProps<T, S, F>>;
  /** The template to use while rendering the errors for a single field */
  FieldHelpTemplate: ComponentType<FieldHelpProps<T, S, F>>;
  /** The template to use while rendering a field */
  FieldTemplate: ComponentType<FieldTemplateProps<T, S, F>>;
  /** The template to use to render a Grid element */
  GridTemplate: ComponentType<GridTemplateProps>;
  /** The template to use while rendering a multi-schema field (i.e. anyOf, oneOf) */
  MultiSchemaFieldTemplate: ComponentType<MultiSchemaFieldTemplateProps<T, S, F>>;
  /** The template to use while rendering an object */
  ObjectFieldTemplate: ComponentType<ObjectFieldTemplateProps<T, S, F>>;
  /** The template to use while rendering the Optional Data field controls */
  OptionalDataControlsTemplate: ComponentType<OptionalDataControlsTemplateProps<T, S, F>>;
  /** The template to use for rendering the title of a field */
  TitleFieldTemplate: ComponentType<TitleFieldProps<T, S, F>>;
  /** The template to use for rendering information about an unsupported field type in the schema */
  UnsupportedFieldTemplate: ComponentType<UnsupportedFieldProps<T, S, F>>;
  /** The template to use for rendering a field that allows a user to add additional properties */
  WrapIfAdditionalTemplate: ComponentType<WrapIfAdditionalTemplateProps<T, S, F>>;
  /** The set of templates associated with buttons in the form */
  ButtonTemplates: {
    /** The template to use for the main `Submit` button  */
    SubmitButton: ComponentType<SubmitButtonProps<T, S, F>>;
    /** The template to use for the Add button used for AdditionalProperties and Array items */
    AddButton: ComponentType<IconButtonProps<T, S, F>>;
    /** The template to use for the Copy button used for Array items */
    CopyButton: ComponentType<IconButtonProps<T, S, F>>;
    /** The template to use for the Move Down button used for Array items */
    MoveDownButton: ComponentType<IconButtonProps<T, S, F>>;
    /** The template to use for the Move Up button used for Array items */
    MoveUpButton: ComponentType<IconButtonProps<T, S, F>>;
    /** The template to use for the Remove button used for AdditionalProperties and Array items */
    RemoveButton: ComponentType<IconButtonProps<T, S, F>>;
    /** The template to use for the Clear button used for input fields */
    ClearButton: ComponentType<IconButtonProps<T, S, F>>;
  };
} & {
  /** Allow this to support any named `ComponentType` or an object of named `ComponentType`s */
  [key: string]: ComponentType<any> | { [key: string]: ComponentType<any> } | undefined;
};

/** The set of UiSchema options that can be set globally and used as fallbacks at an individual template, field or
 * widget level when no field-level value of the option is provided. Extends GenericObjectType to support allowing users
 * to provide any value they need for their customizations.
 */
export type GlobalUISchemaOptions = GenericObjectType & {
  /** Flag, if set to `false`, new items cannot be added to array fields, unless overridden (defaults to true) */
  addable?: boolean;
  /** Flag, if set to `true`, array items can be copied (defaults to false) */
  copyable?: boolean;
  /** Flag, if set to `false`, array items cannot be ordered (defaults to true) */
  orderable?: boolean;
  /** Flag, if set to `false`, array items will not be removable (defaults to true) */
  removable?: boolean;
  /** Field labels are rendered by default. Labels may be omitted by setting the `label` option to `false` */
  label?: boolean;
  /** Flag, if set to `true`, will allow the text input fields to be cleared
   */
  allowClearTextInputs?: boolean;
  /** When using `additionalProperties`, key collision is prevented by appending a unique integer to the duplicate key.
   * This option allows you to change the separator between the original key name and the integer. Default is "-"
   */
  duplicateKeySuffixSeparator?: string;
  /** Enables the displaying of description text that contains markdown
   */
  enableMarkdownInDescription?: boolean;
  /** Enables the displaying of help text that contains markdown
   */
  enableMarkdownInHelp?: boolean;
  /** Enables the rendering of the Optional Data Field UI for specific types of schemas, either `object`, `array` or
   * both. To disable the Optional Data Field UI for a specific field, provide an empty array within the UI schema.
   */
  enableOptionalDataFieldForType?: ('object' | 'array')[];
};

/** The set of options from the `Form` that will be available on the `Registry` for use in everywhere the `registry` is
 * available.
 */
export type GlobalFormOptions = {
  /** To avoid collisions with existing ids in the DOM, it is possible to change the prefix used for ids;
   * Default is `root`. This prop is passed to the `toFilePathId()` function within the RJSF field implementations.
   */
  readonly idPrefix: string;
  /** To avoid using a path separator that is present in field names, it is possible to change the separator used for
   * ids; Default is `_`. This prop is passed to the `toFilePathId()` function within the RJSF field implementations.
   */
  readonly idSeparator: string;
  /** The component update strategy used by the Form and its fields for performance optimization */
  readonly experimental_componentUpdateStrategy?: 'customDeep' | 'shallow' | 'always';
  /** Optional function to generate custom HTML name attributes for form elements. Receives the field path segments
   * and element type (object or array), and returns a custom name string. This allows backends like PHP/Rails
   * (`root[tasks][0][title]`) or Django (`root__tasks-0__title`) to receive form data in their expected format.
   */
  readonly nameGenerator?: NameGeneratorFunction;
  /**
   * Boolean flag that, when set to true, will cause the form to use a fallback UI when encountering a schema type that
   * is not supported by RJSF or a custom field. When false, the UnsupportedField error component will be shown instead.
   */
  readonly useFallbackUiForUnsupportedType?: boolean;
};

/** The object containing the registered core, theme and custom fields and widgets as well as the root schema, form
 * context, schema utils and templates.
 */
export interface Registry<T = any, S extends StrictRJSFSchema = RJSFSchema, F extends FormContextType = any> {
  /** The set of all fields used by the `Form`. Includes fields from `core`, theme-specific fields and any custom
   * registered fields
   */
  fields: RegistryFieldsType<T, S, F>;
  /** The set of templates used by the `Form`. Includes templates from `core`, theme-specific templates and any custom
   * registered templates
   */
  templates: TemplatesType<T, S, F>;
  /** The set of all widgets used by the `Form`. Includes widgets from `core`, theme-specific widgets and any custom
   * registered widgets
   */
  widgets: RegistryWidgetsType<T, S, F>;
  /** The `formContext` object that was passed to `Form` */
  formContext: F;
  /** The root schema, as passed to the `Form`, which can contain referenced definitions */
  rootSchema: S;
  /** The current implementation of the `SchemaUtilsType` (from `@rjsf/utils`) in use by the `Form`.  Used to call any
   * of the validation-schema-based utility functions
   */
  schemaUtils: SchemaUtilsType<T, S>;
  /** The string translation function to use when displaying any of the RJSF strings in templates, fields or widgets */
  translateString: (stringKey: TranslatableString, params?: string[]) => string;
  /** The global Form Options that are available for all templates, fields and widgets to access */
  readonly globalFormOptions: GlobalFormOptions;
  /** The optional global UI Options that are available for all templates, fields and widgets to access */
  globalUiOptions?: GlobalUISchemaOptions;
  /** The optional uiSchema definitions extracted from the root uiSchema, keyed by `$ref` paths.
   * Used to automatically apply uiSchema when a schema with a matching `$ref` is resolved.
   */
  uiSchemaDefinitions?: UiSchemaDefinitions<T, S, F>;
}

/** The properties that are passed to a `Field` implementation */
export interface FieldProps<T = any, S extends StrictRJSFSchema = RJSFSchema, F extends FormContextType = any>
  extends
    GenericObjectType,
    RJSFBaseProps<T, S, F>,
    Pick<HTMLAttributes<HTMLElement>, Exclude<keyof HTMLAttributes<HTMLElement>, 'onBlur' | 'onFocus' | 'onChange'>> {
  /** The FieldPathId of the field in the hierarchy */
  fieldPathId: FieldPathId;
  /** The data for this field */
  formData?: T;
  /** The tree of errors for this field and its children */
  errorSchema?: ErrorSchema<T>;
  /** The field change event handler; called with the updated field value, the change path for the value
   * (defaults to an empty array), an optional ErrorSchema and the optional id of the field being changed
   */
  onChange: (newValue: T | undefined, path: FieldPathList, es?: ErrorSchema<T>, id?: string) => void;
  /** The input blur event handler; call it with the field id and value */
  onBlur: (id: string, value: any) => void;
  /** The input focus event handler; call it with the field id and value */
  onFocus: (id: string, value: any) => void;
  /** A boolean value stating if the field should autofocus */
  autofocus?: boolean;
  /** A boolean value stating if the field is disabled */
  disabled?: boolean;
  /** A boolean value stating if the field is hiding its errors */
  hideError?: boolean;
  /** A boolean value stating if the field is read-only */
  readonly?: boolean;
  /** The required status of this field */
  required?: boolean;
  /** The unique name of the field, usually derived from the name of the property in the JSONSchema */
  name: string;
  /** An array of strings listing all generated error messages from encountered errors for this field */
  rawErrors?: string[];
}

/** The definition of a React-based Field component */
export type Field<T = any, S extends StrictRJSFSchema = RJSFSchema, F extends FormContextType = any> = ComponentType<
  FieldProps<T, S, F>
> & {
  /** The optional TEST_IDS block that some fields contain, exported for testing purposes */
  TEST_IDS?: TestIdShape;
};

/** The properties that are passed to a `FieldTemplate` implementation */
export type FieldTemplateProps<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> = RJSFBaseProps<T, S, F> & {
  /** The FieldPathId containing the id and path for this field */
  fieldPathId: FieldPathId;
  /** The id of the field in the hierarchy. You can use it to render a label targeting the wrapped widget */
  id: string;
  /** A string containing the base CSS classes, merged with any custom ones defined in your uiSchema */
  classNames?: string;
  /** An object containing the style as defined in the `uiSchema` */
  style?: StyleHTMLAttributes<any>;
  /** The computed label for this field, as a string */
  label: string;
  /** A component instance rendering the field description, if one is defined (this will use any custom
   * `DescriptionField` defined)
   */
  description?: ReactElement;
  /** A string containing any `ui:description` uiSchema directive defined */
  rawDescription?: string;
  /** The field or widget component instance for this field row */
  children: ReactElement;
  /** A component instance listing any encountered errors for this field */
  errors?: ReactElement;
  /** An array of strings listing all generated error messages from encountered errors for this field */
  rawErrors?: string[];
  /** A component instance rendering any `ui:help` uiSchema directive defined */
  help?: ReactElement;
  /** A string containing any `ui:help` uiSchema directive defined. **NOTE:** `rawHelp` will be `undefined` if passed
   * `ui:help` is a React component instead of a string
   */
  rawHelp?: string;
  /** A boolean value stating if the field should be hidden */
  hidden?: boolean;
  /** A boolean value stating if the field is required */
  required?: boolean;
  /** A boolean value stating if the field is read-only */
  readonly: boolean;
  /** A boolean value stating if the field is hiding its errors */
  hideError?: boolean;
  /** A boolean value stating if the field is disabled */
  disabled: boolean;
  /** A boolean value stating if the label should be rendered or not. This is useful for nested fields in arrays where
   * you don't want to clutter the UI
   */
  displayLabel?: boolean;
  /** The formData for this field */
  formData?: T;
  /** The value change event handler; Can be called with a new value to change the value for this field */
  onChange: FieldProps<T, S, F>['onChange'];
  /** Callback used to handle the changing of an additional property key's name with the new value
   */
  onKeyRename: (newKey: string) => void;
  /** Callback used to handle the changing of an additional property key's name when the input is blurred. The event's
   * target's value will be used as the new value. Its a wrapper callback around `onKeyRename`
   */
  onKeyRenameBlur: (event: FocusEvent<HTMLInputElement>) => void;
  /** Callback used to handle the removal of the additionalProperty */
  onRemoveProperty: () => void;
};

/**
 * The properties that are passed to a `FallbackField` implementation
 */
export type FallbackFieldProps<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> = FieldProps<T, S, F>;

/**
 * The properties that are passed to a `FallbackFieldTemplate` implementation
 */
export type FallbackFieldTemplateProps<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> = RJSFBaseProps<T, S, F> & {
  /** A ReactNode that allows the selecting a different type for the field */
  typeSelector: ReactNode;
  /** A ReactNode that renders the field with the present formData and matches the selected type */
  schemaField: ReactNode;
};

/** The properties that are passed to the `UnsupportedFieldTemplate` implementation */
export type UnsupportedFieldProps<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> = RJSFBaseProps<T, S, F> & {
  /** The FieldPathId of the field in the hierarchy */
  fieldPathId: FieldPathId;
  /** The reason why the schema field has an unsupported type */
  reason: string;
};

/** The properties that are passed to a `TitleFieldTemplate` implementation */
export type TitleFieldProps<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> = RJSFBaseProps<T, S, F> & {
  /** The id of the field title in the hierarchy */
  id: string;
  /** The title for the field being rendered */
  title: string;
  /** A boolean value stating if the field is required */
  required?: boolean;
  /** Add optional data control */
  optionalDataControl?: ReactNode;
};

/** The properties that are passed to a `DescriptionFieldTemplate` implementation */
export type DescriptionFieldProps<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> = RJSFBaseProps<T, S, F> & {
  /** The id of the field description in the hierarchy */
  id: string;
  /** The description of the field being rendered */
  description: string | ReactElement;
};

/** The properties that are passed to a `ArrayFieldTitleTemplate` implementation */
export type ArrayFieldTitleProps<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> = Omit<TitleFieldProps<T, S, F>, 'id' | 'title'> & {
  /** The title for the field being rendered */
  title?: string;
  /** The FieldPathId of the field in the hierarchy */
  fieldPathId: FieldPathId;
  /** Add optional data control */
  optionalDataControl?: ReactNode;
};

/** The properties that are passed to a `ArrayFieldDescriptionTemplate` implementation */
export type ArrayFieldDescriptionProps<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> = Omit<DescriptionFieldProps<T, S, F>, 'id' | 'description'> & {
  /** The description of the field being rendered */
  description?: string | ReactElement;
  /** An object containing the id and path for this field */
  fieldPathId: FieldPathId;
};

/** The properties of the buttons to render for each element in the ArrayFieldTemplateProps.items array */
export type ArrayFieldItemButtonsTemplateProps<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> = RJSFBaseProps<T, S, F> & {
  /** The FieldPathId of the item for which buttons are being rendered */
  fieldPathId: FieldPathId;
  /** The className string */
  className?: string;
  /** Any optional style attributes */
  style?: ButtonHTMLAttributes<HTMLButtonElement>['style'];
  /** A boolean value stating if the array item is disabled */
  disabled?: boolean;
  /** A boolean value stating whether new items can be added to the array */
  canAdd: boolean;
  /** A boolean value stating whether the array item can be copied, assumed false if missing */
  hasCopy: boolean;
  /** A boolean value stating whether the array item can be moved down */
  hasMoveDown: boolean;
  /** A boolean value stating whether the array item can be moved up */
  hasMoveUp: boolean;
  /** A boolean value stating whether the array item can be removed */
  hasRemove: boolean;
  /** A number stating the index the array item occurs in `items` */
  index: number;
  /** A number stating the total number `items` in the array */
  totalItems: number;
  /** Callback function that adds a new item below this item */
  onAddItem: (event?: any) => void;
  /** Callback function that copies this item below itself */
  onCopyItem: (event?: any) => void;
  /** Callback function that moves the item up one spot in the list */
  onMoveUpItem: (event?: any) => void;
  /** Callback function that moves the item down one spot in the list */
  onMoveDownItem: (event?: any) => void;
  /** Callback function that removes the item from the list */
  onRemoveItem: (event?: any) => void;
  /** A boolean value stating if the array item is read-only */
  readonly?: boolean;
};

/** The properties used to render the ArrayFieldItemTemplate */
export type ArrayFieldItemTemplateProps<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> = RJSFBaseProps<T, S, F> & {
  /** The html for the item's content */
  children: ReactNode;
  /** The props to pass to the `ArrayFieldItemButtonTemplate` */
  buttonsProps: ArrayFieldItemButtonsTemplateProps<T, S, F>;
  /** The className string */
  className: string;
  /** A boolean value stating if the array item is disabled */
  disabled?: boolean;
  /** A boolean value stating whether the array item has a toolbar */
  hasToolbar: boolean;
  /** A number stating the index the array item occurs in `items` */
  index: number;
  /** A number stating the total number `items` in the array */
  totalItems: number;
  /** A boolean value stating if the array item is read-only */
  readonly?: boolean;
  /** A stable, unique key for the array item */
  itemKey: string;
  /** The UI schema of the array item's parent array field used for
   * customization in some themes
   */
  parentUiSchema?: UiSchema<T, S, F>;
  /** A boolean flag indicating whether the label for the field is being shown, used to assist buttons placement */
  displayLabel?: boolean;
  /** A boolean flag indicating whether there is a description for the field, used to assist buttons placement */
  hasDescription?: boolean;
};

/** The common properties of the two container templates: `ArrayFieldTemplateProps` and `ObjectFieldTemplateProps` */
export type ContainerFieldTemplateProps<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> = RJSFBaseProps<T, S, F> & {
  /** The className string */
  className?: string;
  /** A boolean value stating if the array is disabled */
  disabled?: boolean;
  /** The FieldPathId of the field in the hierarchy */
  fieldPathId: FieldPathId;
  /** A boolean value stating if the array is read-only */
  readonly?: boolean;
  /** A boolean value stating if the array is required */
  required?: boolean;
  /** A boolean value stating if the field is hiding its errors */
  hideError?: boolean;
  /** A string value containing the title for the array */
  title: string;
  /** The formData for this array */
  formData?: T;
  /** The optional validation errors in the form of an `ErrorSchema` */
  errorSchema?: ErrorSchema<T>;
  /** The optional data control node to render within the ObjectFieldTemplate that controls */
  optionalDataControl?: ReactNode;
};

/** The properties that are passed to an `ArrayFieldTemplate` implementation */
export type ArrayFieldTemplateProps<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> = ContainerFieldTemplateProps<T, S, F> & {
  /** A boolean value stating whether new elements can be added to the array */
  canAdd?: boolean;
  /** An array of React elements representing the items in the array */
  items: ReactElement[];
  /** A function that adds a new item to the end of the array */
  onAddClick: (event?: any) => void;
  /** An array of strings listing all generated error messages from encountered errors for this widget */
  rawErrors?: string[];
};

/** The properties of each element in the ObjectFieldTemplateProps.properties array */
export type ObjectFieldTemplatePropertyType = {
  /** The html for the property's content */
  content: ReactElement;
  /** A string representing the property name */
  name: string;
  /** A boolean value stating if the object property is disabled */
  disabled?: boolean;
  /** A boolean value stating if the property is read-only */
  readonly?: boolean;
  /** A boolean value stating if the property should be hidden */
  hidden: boolean;
};

/** The properties that are passed to an ObjectFieldTemplate implementation */
export type ObjectFieldTemplateProps<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> = ContainerFieldTemplateProps<T, S, F> & {
  /** A string value containing the description for the object */
  description?: string | ReactElement;
  /** An array of objects representing the properties in the object */
  properties: ObjectFieldTemplatePropertyType[];
  /** Callback to use in order to add an new additionalProperty to the object field  (to be used with
   * additionalProperties and patternProperties)
   */
  onAddProperty: () => void;
  /** A boolean value stating if the object is read-only */
  readonly?: boolean;
  /** A boolean value stating if the object is required */
  required?: boolean;
  /** A boolean value stating if the field is hiding its errors */
  hideError?: boolean;
  /** The FieldPathId of the field in the hierarchy */
  fieldPathId: FieldPathId;
  /** The optional validation errors in the form of an `ErrorSchema` */
  errorSchema?: ErrorSchema<T>;
  /** The form data for the object */
  formData?: T;
};

/** The properties that are passed to a OptionalDataControlsTemplate implementation */
export type OptionalDataControlsTemplateProps<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> = RJSFBaseProps<T, S, F> & {
  /** The generated id for this Optional Data Control instance */
  id: string;
  /** The label to use for the Optional Data Control */
  label: string;
  /** Optional callback to call when clicking on the Optional Data Control to add data */
  onRemoveClick?: () => void;
  /** Optional callback to call when clicking on the Optional Data Control to remove data */
  onAddClick?: () => void;
};

/** The properties that are passed to a WrapIfAdditionalTemplate implementation */
export type WrapIfAdditionalTemplateProps<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> = RJSFBaseProps<T, S, F> & {
  /** The field or widget component instance for this field row */
  children: ReactNode;
} & Pick<
    FieldTemplateProps<T, S, F>,
    | 'id'
    | 'classNames'
    | 'hideError'
    | 'rawDescription'
    | 'rawErrors'
    | 'style'
    | 'displayLabel'
    | 'label'
    | 'required'
    | 'readonly'
    | 'disabled'
    | 'schema'
    | 'uiSchema'
    | 'onKeyRename'
    | 'onKeyRenameBlur'
    | 'onRemoveProperty'
    | 'registry'
  >;

/** The properties that are passed to a MultiSchemaFieldTemplate implementation */
export interface MultiSchemaFieldTemplateProps<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> extends RJSFBaseProps<T, S, F> {
  /** The rendered widget used to select a schema option */
  selector: ReactNode;
  /** The rendered SchemaField for the selected schema option */
  optionSchemaField: ReactNode;
}

/** The properties that are passed to a `Widget` implementation */
export interface WidgetProps<T = any, S extends StrictRJSFSchema = RJSFSchema, F extends FormContextType = any>
  extends
    GenericObjectType,
    RJSFBaseProps<T, S, F>,
    Pick<HTMLAttributes<HTMLElement>, Exclude<keyof HTMLAttributes<HTMLElement>, 'onBlur' | 'onFocus' | 'onChange'>> {
  /** The generated id for this widget, used to provide unique `name`s and `id`s for the HTML field elements rendered by
   * widgets
   */
  id: string;
  /** The unique name of the field, usually derived from the name of the property in the JSONSchema; Provided in support
   * of custom widgets.
   */
  name: string;
  /** The current value for this widget */
  value: any;
  /** The required status of this widget */
  required?: boolean;
  /** A boolean value stating if the widget is disabled */
  disabled?: boolean;
  /** A boolean value stating if the widget is read-only */
  readonly?: boolean;
  /** A boolean value stating if the widget is hiding its errors */
  hideError?: boolean;
  /** A boolean value stating if the widget should autofocus */
  autofocus?: boolean;
  /** The placeholder for the widget, if any */
  placeholder?: string;
  /** A map of UI Options passed as a prop to the component, including the optional `enumOptions`
   * which is a special case on top of `UIOptionsType` needed only by widgets
   */
  options: NonNullable<UIOptionsType<T, S, F>> & {
    /** The enum options list for a type that supports them */
    enumOptions?: EnumOptionsType<S>[];
  };
  /** The input blur event handler; call it with the widget id and value */
  onBlur: (id: string, value: any) => void;
  /** The value change event handler; call it with the new value every time it changes */
  onChange: (value: any, es?: ErrorSchema<T>, id?: string) => void;
  /** The input focus event handler; call it with the widget id and value */
  onFocus: (id: string, value: any) => void;
  /** The computed label for this widget, as a string */
  label: string;
  /** A boolean value, if true, will cause the label to be hidden. This is useful for nested fields where you don't want
   * to clutter the UI. Customized via `label` in the `UiSchema`
   */
  hideLabel?: boolean;
  /** A boolean value stating if the widget can accept multiple values */
  multiple?: boolean;
  /** An array of strings listing all generated error messages from encountered errors for this widget */
  rawErrors?: string[];
  /** The optional custom HTML name attribute generated by the nameGenerator function, if provided */
  htmlName?: string;
}

/** The definition of a React-based Widget component */
export type Widget<T = any, S extends StrictRJSFSchema = RJSFSchema, F extends FormContextType = any> = ComponentType<
  WidgetProps<T, S, F>
>;

/** The properties that are passed to the BaseInputTemplate */
export interface BaseInputTemplateProps<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> extends WidgetProps<T, S, F> {
  /** A `BaseInputTemplate` implements a default `onChange` handler that it passes to the HTML input component to handle
   * the `ChangeEvent`. Sometimes a widget may need to handle the `ChangeEvent` using custom logic. If that is the case,
   * that widget should provide its own handler via this prop.
   */
  onChangeOverride?: (event: ChangeEvent<HTMLInputElement>) => void;
}

/** The type that defines the props used by the Submit button */
export type SubmitButtonProps<T = any, S extends StrictRJSFSchema = RJSFSchema, F extends FormContextType = any> = {
  /** The uiSchema for this widget */
  uiSchema?: UiSchema<T, S, F>;
  /** The `registry` object */
  registry: Registry<T, S, F>;
};

/** The type that defines the props for an Icon button, extending from a basic HTML button attributes */
export type IconButtonProps<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> = ButtonHTMLAttributes<HTMLButtonElement> &
  Omit<RJSFBaseProps<T, S, F>, 'schema'> & {
    /** An alternative specification for the type of the icon button */
    iconType?: string;
    /** The name representation or actual react element implementation for the icon */
    icon?: string | ReactElement;
  };

/** The type that defines how to change the behavior of the submit button for the form */
export type UISchemaSubmitButtonOptions = {
  /** The text of the submit button. Set to "Submit" by default */
  submitText?: string;
  /** Flag, if `true`, removes the submit button completely from the form */
  norender?: boolean;
  /** Any other props to be passed to the submit button itself */
  props?: GenericObjectType & {
    /** A boolean value stating if the submit button is disabled */
    disabled?: boolean;
    /** The class name for the submit button */
    className?: string;
  };
};

/** Represents a primitive JSON Schema enum value */
export type EnumValue = string | number | boolean;

/** This type represents an element used to render an enum option */
export type EnumOptionsType<S extends StrictRJSFSchema = RJSFSchema> = {
  /** The value for the enum option */
  value: any;
  /** The label for the enum options */
  label: string;
  /** The schema associated with the enum option when the option represents a `oneOf` or `anyOf` choice */
  schema?: S;
};

/** This type remaps the keys of `Type` to prepend `ui:` onto them. As a result it does not need to be exported */
type MakeUIType<Type> = {
  [Property in keyof Type as `ui:${string & Property}`]: Type[Property];
};

/** This type represents all the known supported options in the `ui:options` property, kept separate in order to
 * remap the keys. It also contains all the properties, optionally, of `TemplatesType` except "ButtonTemplates"
 */
type UIOptionsBaseType<T = any, S extends StrictRJSFSchema = RJSFSchema, F extends FormContextType = any> = Partial<
  Pick<
    TemplatesType<T, S, F>,
    | 'ArrayFieldDescriptionTemplate'
    | 'ArrayFieldItemTemplate'
    | 'ArrayFieldTemplate'
    | 'ArrayFieldTitleTemplate'
    | 'BaseInputTemplate'
    | 'DescriptionFieldTemplate'
    | 'ErrorListTemplate'
    | 'FieldErrorTemplate'
    | 'FieldHelpTemplate'
    | 'FieldTemplate'
    | 'ObjectFieldTemplate'
    | 'TitleFieldTemplate'
    | 'UnsupportedFieldTemplate'
    | 'WrapIfAdditionalTemplate'
  >
> &
  GlobalUISchemaOptions & {
    /** Allows RJSF to override the default field implementation by specifying either the name of a field that is used
     * to look up an implementation from the `fields` list or an actual one-off `Field` component implementation itself
     */
    field?: Field<T, S, F> | string;
    /** Any classnames that the user wants to be applied to a field in the ui */
    classNames?: string;
    /** Any custom style that the user wants to apply to a field in the ui, applied on the same element as classNames */
    style?: StyleHTMLAttributes<any>;
    /** We know that for title, it will be a string, if it is provided */
    title?: string;
    /** We know that for description, it will be a string, if it is provided */
    description?: string;
    /** We know that for placeholder, it will be a string, if it is provided */
    placeholder?: string;
    /** Used to add text next to a field to guide the end user in filling it in */
    help?: string;
    /** Flag, if set to `true`, will mark the field as automatically focused on a text input or textarea input */
    autofocus?: boolean;
    /** Use to mark the field as supporting auto complete on a text input or textarea input */
    autocomplete?: HTMLInputElement['autocomplete'];
    /** Flag, if set to `true`, will mark all child widgets from a given field as disabled */
    disabled?: boolean;
    /** The default value to use when an input for a field is empty */
    emptyValue?: any;
    /** Will disable any of the enum options specified in the array (by value) */
    enumDisabled?: EnumValue[];
    /** Allows a user to provide a list of labels for enum values in the schema.
     * Can be an array (positional, matched by index) or a Record mapping enum values to labels (matched by value).
     */
    enumNames?: string[] | Record<string | number, string>;
    /** Controls the display order of enum options, following the same pattern as `ui:order` for object properties.
     * Supports a `'*'` wildcard to represent all remaining values in their original schema order.
     */
    enumOrder?: EnumValue[];
    /** Provides an optional field within a schema to be used as the oneOf/anyOf selector when there isn't a
     * discriminator
     */
    optionsSchemaSelector?: string;
    /** Flag, if set to `true`, will hide the default error display for the given field AND all of its child fields in the
     * hierarchy
     */
    hideError?: boolean;
    /** Flag, if set to `true`, will mark all child widgets from a given field as read-only */
    readonly?: boolean;
    /** This property allows you to reorder the properties that are shown for a particular object */
    order?: string[];
    /** Flag, if set to `true`, will cause the `FileWidget` to show a preview (with download for non-image files) */
    filePreview?: boolean;
    /** Flag, if set to `true`, will mark a list of checkboxes as displayed all on one line instead of one per row */
    inline?: boolean;
    /** Used to change the input type (for example, `tel` or `email`) for an <input> */
    inputType?: string;
    /** Provides a means to set the initial height of a textarea widget */
    rows?: number;
    /** If submitButtonOptions is provided it should match the `UISchemaSubmitButtonOptions` type */
    submitButtonOptions?: UISchemaSubmitButtonOptions;
    /** Allows RJSF to override the default widget implementation by specifying either the name of a widget that is used
     * to look up an implementation from the `widgets` list or an actual one-off widget implementation itself
     */
    widget?: Widget<T, S, F> | string;
  };

/** The type that represents the Options potentially provided by `ui:options` */
export type UIOptionsType<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> = UIOptionsBaseType<T, S, F> & {
  /** Anything else will be one of these types */
  [key: string]: boolean | number | string | object | any[] | null | undefined;
};

/**
 * A utility type that extracts the element type from an array type.
 * If the type is not an array, it returns the type itself as a safe fallback.
 * Handles both standard arrays and readonly arrays.
 */
export type ArrayElement<A> = A extends readonly (infer E)[] ? E : A;

/** Type describing the uiSchema definitions that can be applied to schemas referenced by `$ref`.
 * Keys are the full `$ref` path (e.g., '#/$defs/node', '#/definitions/address').
 * When a schema with a matching `$ref` is resolved, the corresponding uiSchema definition
 * is automatically applied and merged with any local uiSchema overrides.
 */
export type UiSchemaDefinitions<T = any, S extends StrictRJSFSchema = RJSFSchema, F extends FormContextType = any> = {
  [refPath: string]: UiSchema<T, S, F>;
};

/** Type describing the well-known properties of the `UiSchema` while also supporting all user defined properties,
 * starting with `ui:`.
 */
export type UiSchema<
  T = any,
  S extends StrictRJSFSchema = RJSFSchema,
  F extends FormContextType = any,
> = GenericObjectType &
  MakeUIType<UIOptionsBaseType<T, S, F>> & {
    /** The set of Globally relevant UI Schema options that are read from the root-level UiSchema and stored in the
     * Registry for use everywhere.
     */
    'ui:globalOptions'?: GlobalUISchemaOptions;
    /** Allows the form to generate a unique prefix for the `Form`'s root prefix
     *
     * @deprecated - use `Form.idPrefix` instead, will be removed in a future major version
     */
    'ui:rootFieldId'?: string;
    /** By default, any field that is rendered for an `anyOf`/`oneOf` schema will be wrapped inside the `AnyOfField` or
     * `OneOfField` component. This default behavior may be undesirable if your custom field already handles behavior
     * related to choosing one or more subschemas contained in the `anyOf`/`oneOf` schema.
     * By providing a `true` value for this flag in association with a custom `ui:field`, the wrapped components will be
     * omitted, so just one instance of the custom field will be rendered. If the flag is omitted or set to `false`,
     * your custom field will be wrapped by `AnyOfField`/`OneOfField`.
     */
    'ui:fieldReplacesAnyOrOneOf'?: boolean;
    /** An object that contains all the potential UI options in a single object */
    'ui:options'?: UIOptionsType<T, S, F>;
    /** The uiSchema for items in an array. Can be an object for a uniform uiSchema across all items (current behavior),
     * or a function that returns a dynamic uiSchema based on the item's data and index.
     * When using a function, it receives the item data, index, and optionally the form context as parameters.
     */
    items?:
      | UiSchema<ArrayElement<T>, S, F>
      | ((itemData: ArrayElement<T>, index: number, formContext?: F) => UiSchema<ArrayElement<T>, S, F>);
    /** An object containing uiSchema definitions keyed by JSON Schema `$ref` paths.
     * When a schema with a `$ref` is resolved, the corresponding uiSchema definition is automatically
     * applied and merged with any local uiSchema overrides at that path.
     * Keys must be full `$ref` paths (e.g., '#/$defs/node', '#/definitions/address').
     */
    'ui:definitions'?: UiSchemaDefinitions<T, S, F>;
  };

/** A `CustomValidator` function takes in a `formData`, `errors`, `uiSchema` and `errorSchema` objects and returns the given `errors`
 * object back, while potentially adding additional messages to the `errors`
 */
export type CustomValidator<T = any, S extends StrictRJSFSchema = RJSFSchema, F extends FormContextType = any> = (
  formData: T | undefined,
  errors: FormValidation<T>,
  uiSchema?: UiSchema<T, S, F>,
  errorSchema?: ErrorSchema<T>,
) => FormValidation<T>;

/** An `ErrorTransformer` function will take in a list of `errors` & a `uiSchema` and potentially return a
 * transformation of those errors in what ever way it deems necessary
 */
export type ErrorTransformer<T = any, S extends StrictRJSFSchema = RJSFSchema, F extends FormContextType = any> = (
  errors: RJSFValidationError[],
  uiSchema?: UiSchema<T, S, F>,
) => RJSFValidationError[];

/** The type that describes the data that is returned from the `ValidatorType.validateFormData()` function */
export type ValidationData<T> = {
  /** The validation errors as a list of `RJSFValidationError` objects */
  errors: RJSFValidationError[];
  /** The validation errors in the form of an `ErrorSchema` */
  errorSchema: ErrorSchema<T>;
};

/** The interface that describes the validation functions that are provided by a Validator implementation used by the
 * schema utilities.
 */
export interface ValidatorType<T = any, S extends StrictRJSFSchema = RJSFSchema, F extends FormContextType = any> {
  /** This function processes the `formData` with an optional user contributed `customValidate` function, which receives
   * the form data and a `errorHandler` function that will be used to add custom validation errors for each field. Also
   * supports a `transformErrors` function that will take the raw AJV validation errors, prior to custom validation and
   * transform them in what ever way it chooses.
   *
   * @param formData - The form data to validate
   * @param schema - The schema against which to validate the form data
   * @param [customValidate] - An optional function that is used to perform custom validation
   * @param [transformErrors] - An optional function that is used to transform errors after AJV validation
   * @param [uiSchema] - An optional uiSchema that is passed to `transformErrors` and `customValidate`
   */
  validateFormData(
    formData: T | undefined,
    schema: S,
    customValidate?: CustomValidator<T, S, F>,
    transformErrors?: ErrorTransformer<T, S, F>,
    uiSchema?: UiSchema<T, S, F>,
  ): ValidationData<T>;
  /** Validates data against a schema, returning true if the data is valid, or
   * false otherwise. If the schema is invalid, then this function will return
   * false.
   *
   * @param schema - The schema against which to validate the form data   * @param schema
   * @param formData - The form data to validate
   * @param rootSchema - The root schema used to provide $ref resolutions
   */
  isValid(schema: S, formData: T | undefined, rootSchema: S): boolean;
  /** Runs the pure validation of the `schema` and `formData` without any of the RJSF functionality. Provided for use
   * by the playground. Returns the `errors` from the validation
   *
   * @param schema - The schema against which to validate the form data
   * @param formData - The form data to validate
   */
  rawValidation<Result = any>(schema: S, formData?: T): { errors?: Result[]; validationError?: Error };
  /** An optional function that can be used to reset validator implementation. Useful for clear schemas in the AJV
   * instance for tests.
   */
  reset?: () => void;
}

/** The interface for the return value of the `findFieldInSchema` function
 */
export interface FoundFieldType<S extends StrictRJSFSchema = RJSFSchema> {
  /** The field that was found, or undefined if it wasn't */
  field?: S;
  /** The requiredness of the field found or undefined if it wasn't */
  isRequired?: boolean;
}

/** The `SchemaUtilsType` interface provides a wrapper around the publicly exported APIs in the `@rjsf/utils/schema`
 * directory such that one does not have to explicitly pass the `validator` or `rootSchema` to each method. Since both
 * the `validator` and `rootSchema` generally does not change across a `Form`, this allows for providing a simplified
 * set of APIs to the `@rjsf/core` components and the various themes as well.
 */
export interface SchemaUtilsType<T = any, S extends StrictRJSFSchema = RJSFSchema, F extends FormContextType = any> {
  /** Returns the `rootSchema` in the `SchemaUtilsType`
   *
   * @returns - The rootSchema
   */
  getRootSchema(): S;
  /** Returns the `ValidatorType` in the `SchemaUtilsType`
   *
   * @returns - The `ValidatorType`
   */
  getValidator(): ValidatorType<T, S, F>;
  /** Determines whether either the `validator` and `rootSchema` differ from the ones associated with this instance of
   * the `SchemaUtilsType`. If either `validator` or `rootSchema` are falsy, then return false to prevent the creation
   * of a new `SchemaUtilsType` with incomplete properties.
   *
   * @param validator - An implementation of the `ValidatorType` interface that will be compared against the current one
   * @param rootSchema - The root schema that will be compared against the current one
   * @param [experimental_defaultFormStateBehavior] - Optional configuration object, if provided, allows users to override default form state behavior
   * @param [experimental_customMergeAllOf] - Optional function that allows for custom merging of `allOf` schemas
   * @returns - True if the `SchemaUtilsType` differs from the given `validator` or `rootSchema`
   */
  doesSchemaUtilsDiffer(
    validator: ValidatorType<T, S, F>,
    rootSchema: S,
    experimental_defaultFormStateBehavior?: Experimental_DefaultFormStateBehavior,
    experimental_customMergeAllOf?: Experimental_CustomMergeAllOf<S>,
  ): boolean;
  /** Finds the field specified by the `path` within the root or recursed `schema`. If there is no field for the specified
   * `path`, then the default `{ field: undefined, isRequired: undefined }` is returned. It determines whether a leaf
   * field is in the `required` list for its parent and if so, it is marked as required on return.
   *
   * @param schema - The current node within the JSON schema
   * @param path - The remaining keys in the path to the desired field
   * @param [formData] - The form data that is used to determine which oneOf option
   * @returns - An object that contains the field and its required state. If no field can be found then
   *            `{ field: undefined, isRequired: undefined }` is returned.
   */
  findFieldInSchema(schema: S, path: string | string[], formData?: T): FoundFieldType<S>;
  /** Finds the oneOf option inside the `schema['any/oneOf']` list which has the `properties[selectorField].default` that
   * matches the `formData[selectorField]` value. For the purposes of this function, `selectorField` is either
   * `schema.discriminator.propertyName` or `fallbackField`.
   *
   * @param schema - The schema element in which to search for the selected oneOf option
   * @param fallbackField - The field to use as a backup selector field if the schema does not have a required field
   * @param xxx - Either `oneOf` or `anyOf`, defines which value is being sought
   * @param [formData] - The form data that is used to determine which oneOf option
   * @returns - The anyOf/oneOf option that matches the selector field in the schema or undefined if nothing is selected
   */
  findSelectedOptionInXxxOf(schema: S, fallbackField: string, xxx: 'anyOf' | `oneOf`, formData?: T): S | undefined;
  /** Returns the superset of `formData` that includes the given set updated to include any missing fields that have
   * computed to have defaults provided in the `schema`.
   *
   * @param schema - The schema for which the default state is desired
   * @param [formData] - The current formData, if any, onto which to provide any missing defaults
   * @param [includeUndefinedValues=false] - Optional flag, if true, cause undefined values to be added as defaults.
   *          If "excludeObjectChildren", cause undefined values for this object and pass `includeUndefinedValues` as
   *          false when computing defaults for any nested object properties.
   * @param initialDefaultsGenerated - Indicates whether or not initial defaults have been generated
   * @returns - The resulting `formData` with all the defaults provided
   */
  getDefaultFormState(
    schema: S,
    formData?: T,
    includeUndefinedValues?: boolean | 'excludeObjectChildren',
    initialDefaultsGenerated?: boolean,
  ): T | T[] | undefined;
  /** Determines whether the combination of `schema` and `uiSchema` properties indicates that the label for the `schema`
   * should be displayed in a UI.
   *
   * @param schema - The schema for which the display label flag is desired
   * @param [uiSchema] - The UI schema from which to derive potentially displayable information
   * @param [globalOptions={}] - The Global UI Schema from which to get any fallback `xxx` options
   * @returns - True if the label should be displayed or false if it should not
   */
  getDisplayLabel(schema: S, uiSchema?: UiSchema<T, S, F>, globalOptions?: GlobalUISchemaOptions): boolean;
  /** Determines which of the given `options` provided most closely matches the `formData`.
   * Returns the index of the option that is valid and is the closest match, or 0 if there is no match.
   *
   * The closest match is determined using the number of matching properties, and more heavily favors options with
   * matching readOnly, default, or const values.
   *
   * @param formData - The form data associated with the schema
   * @param options - The list of options that can be selected from
   * @param [selectedOption] - The index of the currently selected option, defaulted to -1 if not specified
   * @param [discriminatorField] - The optional name of the field within the options object whose value is used to
   *          determine which option is selected
   * @returns - The index of the option that is the closest match to the `formData` or the `selectedOption` if no match
   */
  getClosestMatchingOption(
    formData: T | undefined,
    options: S[],
    selectedOption?: number,
    discriminatorField?: string,
  ): number;
  /** Given the `formData` and list of `options`, attempts to find the index of the first option that matches the data.
   * Always returns the first option if there is nothing that matches.
   *
   * @param formData - The current formData, if any, used to figure out a match
   * @param options - The list of options to find a matching options from
   * @param [discriminatorField] - The optional name of the field within the options object whose value is used to
   *          determine which option is selected
   * @returns - The firstindex of the matched option or 0 if none is available
   */
  getFirstMatchingOption(formData: T | undefined, options: S[], discriminatorField?: string): number;
  /** Helper that acts like lodash's `get` but additionally retrieves `$ref`s as needed to get the path for schemas
   * containing potentially nested `$ref`s.
   *
   * @param schema - The current node within the JSON schema recursion
   * @param path - The remaining keys in the path to the desired property
   * @param defaultValue - The value to return if a value is not found for the `pathList` path
   * @returns - The internal schema from the `schema` for the given `path` or the `defaultValue` if not found
   */
  getFromSchema(schema: S, path: string | string[], defaultValue: T): T;
  getFromSchema(schema: S, path: string | string[], defaultValue: S): S;
  getFromSchema(schema: S, path: string | string[], defaultValue: T | S): S | T;
  /** Checks to see if the `schema` and `uiSchema` combination represents an array of files
   *
   * @param schema - The schema for which check for array of files flag is desired
   * @param [uiSchema] - The UI schema from which to check the widget
   * @returns - True if schema/uiSchema contains an array of files, otherwise false
   */
  isFilesArray(schema: S, uiSchema?: UiSchema<T, S, F>): boolean;
  /** Checks to see if the `schema` combination represents a multi-select
   *
   * @param schema - The schema for which check for a multi-select flag is desired
   * @returns - True if schema contains a multi-select, otherwise false
   */
  isMultiSelect(schema: S): boolean;
  /** Checks to see if the `schema` combination represents a select
   *
   * @param schema - The schema for which check for a select flag is desired
   * @returns - True if schema contains a select, otherwise false
   */
  isSelect(schema: S): boolean;
  /**
   * The function takes a `schema` and `formData` and returns a copy of the formData with any fields not defined in the schema removed.
   * This is useful for ensuring that only data that is relevant to the schema is preserved. Objects with `additionalProperties`
   * keyword set to `true` will not have their extra fields removed.
   *
   * @param schema - The schema to use for filtering the `formData`
   * @param [formData] - The formData to filter
   * @returns The new form data, with any fields not defined in the schema removed
   */
  omitExtraData(schema: S, formData?: T): T | undefined;
  /** Retrieves an expanded schema that has had all of its conditions, additional properties, references and
   * dependencies resolved and merged into the `schema` given a `rawFormData` that is used to do the potentially
   * recursive resolution.
   *
   * @param schema - The schema for which retrieving a schema is desired
   * @param [formData] - The current formData, if any, to assist retrieving a schema
   * @param [resolveAnyOfOrOneOfRefs] - Optional flag indicating whether to resolved refs in anyOf/oneOf lists
   * @returns - The schema having its conditions, additional properties, references and dependencies resolved
   */
  retrieveSchema(schema: S, formData?: T, resolveAnyOfOrOneOfRefs?: boolean): S;
  /** Sanitize the `data` associated with the `oldSchema` so it is considered appropriate for the `newSchema`. If the
   * new schema does not contain any properties, then `undefined` is returned to clear all the form data. Due to the
   * nature of schemas, this sanitization happens recursively for nested objects of data. Also, any properties in the
   * old schema that are non-existent in the new schema are set to `undefined`.
   *
   * @param [newSchema] - The new schema for which the data is being sanitized
   * @param [oldSchema] - The old schema from which the data originated
   * @param [data={}] - The form data associated with the schema, defaulting to an empty object when undefined
   * @returns - The new form data, with all of the fields uniquely associated with the old schema set
   *      to `undefined`. Will return `undefined` if the new schema is not an object containing properties.
   */
  sanitizeDataForNewSchema(newSchema?: S, oldSchema?: S, data?: any): T;
  /** Generates an `PathSchema` object for the `schema`, recursively
   *
   * @param schema - The schema for which the display label flag is desired
   * @param [name] - The base name for the schema
   * @param [formData] - The current formData, if any, onto which to provide any missing defaults
   * @returns - The `PathSchema` object for the `schema`
   */
  toPathSchema(schema: S, name?: string, formData?: T): PathSchema<T>;
}