/**
 * SPDX-License-Identifier: CC0-1.0
 *
 * Copyright (C) 2026 Woj. Kosior <koszko@koszko.org>
 */

/*
  #+begin_src manifest-jq
  .matches = ["<all_urls>"]
  #+end_src
*/

/*
 * This is a counting schemes definition for use with `pow-solver.js'.  It is
 * used by multiple content scripts.
 */

const appendedNumberCountingSchemes = (() => {
    const ascii0 = 48;
    const ascii9 = 57;

    function stepArray(array, by) {
        let idx = array.length - 1;

        while (true) {
            const byte = array[idx] += by;

            if (byte > ascii9) {
                array[idx] = ascii0;
                by = 1;
            } else if (byte < ascii0) {
                array[idx] = ascii9;
                by = -1;
            } else {
                break;
            }

            idx--;
        }
    }

    return [
        /*
         * In Anubis, server parses suffix as Int which might be a signed 32-bit
         * type.
         */
        {
            makeArray: randomData => randomData + '2147483647',
            stepArray: array => stepArray(array, -1),
            suffixLength: () => '2147483647'.length
        },
        {
            makeArray: randomData => randomData + '1000000000',
            stepArray: array => stepArray(array, 1),
            suffixLength: () => '1000000000'.length
        }
    ];
})();