import type { Editor, JSONContent } from "@tiptap/core";

// See
// https://github.com/ueberdosis/tiptap/blob/6cbc2d423391c950558721510c1b4c8614feb534/packages/extension-image/src/image.ts#L48-L58
export type ImageNodeAttributes = {
  /** The URL at which this image can be served. Used as <img> `src`. */
  src: string;
  /** Alt text for the image. */
  alt?: string;
  /** The `title` attribute when we render the image element. */
  title?: string;
};

/**
 * Insert the given array of images into the Tiptap editor document content.
 *
 * Optionally specify a given position at which to insert the images into the
 * editor content. If not given, the user's current selection (if there is any)
 * will be replaced by the newly inserted images.
 *
 * @param options.images The attributes of each image to insert
 * @param options.editor The Tiptap editor in which to insert
 * @param options.position The position at which to insert into the editor
 * content. If not given, uses the current editor caret/selection position.
 */
export function insertImages({
  images,
  editor,
  position,
}: {
  images: ImageNodeAttributes[];
  editor: Editor | null;
  position?: number;
}): void {
  if (!editor || editor.isDestroyed || images.length === 0) {
    return;
  }

  const imageContentToInsert: JSONContent[] = images
    .filter((imageAttrs) => !!imageAttrs.src)
    .map((imageAttrs) => ({
      type: editor.schema.nodes.image.name,
      attrs: imageAttrs,
    }));

  editor
    .chain()
    .command(({ commands }) => {
      if (position == null) {
        // We'll insert at and replace the user's current selection if there
        // wasn't a specific insert position given
        return commands.insertContent(imageContentToInsert);
      } else {
        return commands.insertContentAt(position, imageContentToInsert);
      }
    })
    .focus()
    .run();
}