export interface MosaicBaseProps<T extends MosaicKey> {
  /**
   * Lookup function to convert `T` to a displayable `JSX.Element`
   */
  renderTile: TileRenderer<T>;
  /**
   * Called when a user initiates any change to the tree (removing, adding, moving, resizing, etc.)
   */
  onChange?: (newNode: MosaicNode<T> | null) => void;
  /**
   * Called when a user completes a change (fires like above except for the interpolation during resizing)
   */
  onRelease?: (newNode: MosaicNode<T> | null) => void;
  /**
   * Additional classes to affix to the root element
   * Default: 'mosaic-blueprint-theme'
   */
  className?: string;
  /**
   * Options that control resizing
   * @see: [[ResizeOptions]]
   */
  resize?: ResizeOptions;
  /**
   * View to display when the current value is `null`
   * default: Simple NonIdealState view
   */
  zeroStateView?: JSX.Element;
  /**
   * Override the mosaicId passed to `react-dnd` to control how drag and drop works with other components
   * Note: does not support updating after instantiation
   * default: Random UUID
   */
  mosaicId?: string;
  /**
   * Make it possible to use different versions of Blueprint with `mosaic-blueprint-theme`
   * Note: does not support updating after instantiation
   * default: 'bp3'
   */
  blueprintNamespace?: string;
  /**
   * Override the react-dnd provider to allow applications to inject an existing drag and drop context
   */
  dragAndDropManager?: DragDropManager | undefined;
}

export interface MosaicControlledProps<T extends MosaicKey> extends MosaicBaseProps<T> {
  /**
   * The tree to render
   */
  value: MosaicNode<T> | null;
  onChange: (newNode: MosaicNode<T> | null) => void;
}

export interface MosaicUncontrolledProps<T extends MosaicKey> extends MosaicBaseProps<T> {
  /**
   * The initial tree to render, can be modified by the user
   */
  initialValue: MosaicNode<T> | null;
}

export type MosaicProps<T extends MosaicKey> = MosaicControlledProps<T> | MosaicUncontrolledProps<T>;

export interface MosaicWindowProps<T extends MosaicKey> {
  title: string;
  /**
   * Current path to this window, provided by `renderTile`
   */
  path: MosaicBranch[];
  className?: string;
  /**
   * Controls in the top right of the toolbar
   * default: [Replace, Split, Expand, Remove] if createNode is defined and [Expand, Remove] otherwise
   */
  toolbarControls?: React.ReactNode;
  /**
   * Additional controls that will be hidden in a drawer beneath the toolbar.
   * default: []
   */
  additionalControls?: React.ReactNode;
  /**
   * Label for the button that expands the drawer
   */
  additionalControlButtonText?: string;
  /**
   * A callback that triggers when a user toggles the additional controls
   */
  onAdditionalControlsToggle?: (toggle: boolean) => void;
  /**
   * Whether or not a user should be able to drag windows around
   */
  draggable?: boolean;
  /**
   * Method called when a new node is required (such as the Split or Replace buttons)
   */
  createNode?: CreateNode<T>;
  /**
   * Optional method to override the displayed preview when a user drags a window
   */
  renderPreview?: (props: MosaicWindowProps<T>) => JSX.Element;
  /**
   * Optional method to override the displayed toolbar
   */
  renderToolbar?: ((props: MosaicWindowProps<T>, draggable: boolean | undefined) => JSX.Element) | null;
  /**
   * Optional listener for when the user begins dragging the window
   */
  onDragStart?: () => void;
  /**
   * Optional listener for when the user finishes dragging a window.
   */
  onDragEnd?: (type: 'drop' | 'reset') => void;
}

/**
 * Valid node types
 * @see React.Key
 */
export type MosaicKey = string | number;
export type MosaicBranch = 'first' | 'second';
export type MosaicPath = MosaicBranch[];

/**
 * Context provided to everything within Mosaic
 */
export interface MosaicContext<T extends MosaicKey> {
  mosaicActions: MosaicRootActions<T>;
  mosaicId: string;
}

export interface MosaicRootActions<T extends MosaicKey> {
  /**
   * Increases the size of this node and bubbles up the tree
   * @param path Path to node to expand
   * @param percentage Every node in the path up to root will be expanded to this percentage
   */
  expand: (path: MosaicPath, percentage?: number) => void;
  /**
   * Remove the node at `path`
   * @param path
   */
  remove: (path: MosaicPath) => void;
  /**
   * Hide the node at `path` but keep it in the DOM. Used in Drag and Drop
   * @param path
   */
  hide: (path: MosaicPath) => void;
  /**
   * Replace currentNode at `path` with `node`
   * @param path
   * @param node
   */
  replaceWith: (path: MosaicPath, node: MosaicNode<T>) => void;
  /**
   * Atomically applies all updates to the current tree
   * @param updates
   * @param suppressOnRelease (default: false)
   */
  updateTree: (updates: MosaicUpdate<T>[], suppressOnRelease?: boolean) => void;
  /**
   * Returns the root of this Mosaic instance
   */
  getRoot: () => MosaicNode<T> | null;
}

export interface MosaicWindowContext<T extends MosaicKey> extends MosaicContext<T> {
  mosaicWindowActions: MosaicWindowActions;
}

export interface MosaicWindowActions {
  /**
   * Fails if no `createNode()` is defined
   * Creates a new node and splits the current node.
   * The current node becomes the `first` and the new node the `second` of the result.
   * `direction` is chosen by querying the DOM and splitting along the longer axis
   */
  split: () => Promise<void>;
  /**
   * Fails if no `createNode()` is defined
   * Convenience function to call `createNode()` and replace the current node with it.
   */
  replaceWithNew: () => Promise<void>;
  /**
   * Sets the open state for the tray that holds additional controls
   */
  setAdditionalControlsOpen: (open: boolean) => void;
  /**
   * Returns the path to this window
   */
  getPath: () => MosaicPath;
  /**
   * Enables connecting a different drag source besides the react-mosaic toolbar
   */
  connectDragSource: (connectedElements: React.ReactElement<any>) => React.ReactElement<any>;
}