/**
 * @file /src/utils/positionCondition.ts
 * @name PositionCondition
 * @description Utility functions for position conditions.
 */

import { ResolvedPos } from "@tiptap/pm/model";

export const isAtStartOfNode = (
    $pos: ResolvedPos,
    startOfNodePos: number,
    startOfParagraphPos: number,
    checkExactStart: boolean
): boolean => {
    // Determine the condition to check
    // First position of paragraph will always be 1 more than the body position
    const isFirstParagraph = startOfNodePos + 1 === startOfParagraphPos;
    if (!isFirstParagraph) return false;

    if (checkExactStart) {
        // Check if position is exactly at the start of the body
        // First position of text will always be 1 more than the first paragraph position
        const isPosAtStartOfParagraph = startOfParagraphPos + 1 === $pos.pos;
        return isPosAtStartOfParagraph;
    }

    return true;
};

/**
 * Check if the given position is exactly at the end of the node.
 *
 * @param $pos - The resolved position in the document or the absolute position of the node.
 * @param endOfNodePos - The position of the end of the node.
 * @param endOfParagraphPos - The position of the end of the paragraph.
 * @param checkExactEnd - Whether the position must be at the exact end of the node.
 * @returns {boolean} True if the condition is met, false otherwise.
 */
export const isAtEndOfNode = ($pos: ResolvedPos, endOfNodePos: number, endOfParagraphPos: number, checkExactEnd: boolean): boolean => {
    const isLastParagraph = endOfParagraphPos + 1 === endOfNodePos;
    if (!isLastParagraph) return false;

    if (checkExactEnd) {
        // Check if position is exactly at the end of the node
        // Last position of text will always be 1 less than the end of the last paragraph position
        const isPosAtEndOfParagraph = endOfParagraphPos + 1 === $pos.pos;
        return isPosAtEndOfParagraph;
    }

    return true;
};