"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Base = void 0;
const crypto_js_1 = __importDefault(require("crypto-js"));
class Base {
    /**
     * print
     * @desc Prints out a visual representation of the merkle tree.
     * @example
     *```js
     *tree.print()
     *```
     */
    print() {
        Base.print(this);
    }
    /**
     * bufferIndexOf
     * @desc Returns the first index of which given buffer is found in array.
     * @param {Buffer[]} haystack - Array of buffers.
     * @param {Buffer} needle - Buffer to find.
     * @return {Number} - Index number
     *
     * @example
     * ```js
     *const index = tree.bufferIndexOf(haystack, needle)
     *```
     */
    _bufferIndexOf(array, element) {
        for (let i = 0; i < array.length; i++) {
            if (element.equals(array[i])) {
                return i;
            }
        }
        return -1;
    }
    /**
     * bufferify
     * @desc Returns a buffer type for the given value.
     * @param {String|Number|Object|Buffer} value
     * @return {Buffer}
     *
     * @example
     * ```js
     *const buf = MerkleTree.bufferify('0x1234')
     *```
     */
    static bufferify(value) {
        if (!Buffer.isBuffer(value)) {
            // crypto-js support
            if (typeof value === 'object' && value.words) {
                return Buffer.from(value.toString(crypto_js_1.default.enc.Hex), 'hex');
            }
            else if (Base.isHexString(value)) {
                return Buffer.from(value.replace(/^0x/, ''), 'hex');
            }
            else if (typeof value === 'string') {
                return Buffer.from(value);
            }
            else if (typeof value === 'number') {
                let s = value.toString();
                if (s.length % 2) {
                    s = `0${s}`;
                }
                return Buffer.from(s, 'hex');
            }
        }
        return value;
    }
    /**
     * isHexString
     * @desc Returns true if value is a hex string.
     * @param {String} value
     * @return {Boolean}
     *
     * @example
     * ```js
     *console.log(MerkleTree.isHexString('0x1234'))
     *```
     */
    static isHexString(v) {
        return (typeof v === 'string' && /^(0x)?[0-9A-Fa-f]*$/.test(v));
    }
    /**
     * print
     * @desc Prints out a visual representation of the given merkle tree.
     * @param {Object} tree - Merkle tree instance.
     * @return {String}
     * @example
     *```js
     *MerkleTree.print(tree)
     *```
     */
    static print(tree) {
        console.log(tree.toString());
    }
    /**
     * bufferToHex
     * @desc Returns a hex string with 0x prefix for given buffer.
     * @param {Buffer} value
     * @return {String}
     * @example
     *```js
     *const hexStr = tree.bufferToHex(Buffer.from('A'))
     *```
     */
    bufferToHex(value, withPrefix = true) {
        return Base.bufferToHex(value, withPrefix);
    }
    /**
     * bufferToHex
     * @desc Returns a hex string with 0x prefix for given buffer.
     * @param {Buffer} value
     * @return {String}
     * @example
     *```js
     *const hexStr = MerkleTree.bufferToHex(Buffer.from('A'))
     *```
     */
    static bufferToHex(value, withPrefix = true) {
        return `${withPrefix ? '0x' : ''}${(value || Buffer.alloc(0)).toString('hex')}`;
    }
    /**
     * bufferify
     * @desc Returns a buffer type for the given value.
     * @param {String|Number|Object|Buffer} value
     * @return {Buffer}
     *
     * @example
     * ```js
     *const buf = tree.bufferify('0x1234')
     *```
     */
    bufferify(value) {
        return Base.bufferify(value);
    }
    /**
     * bufferifyFn
     * @desc Returns a function that will bufferify the return value.
     * @param {Function}
     * @return {Function}
     *
     * @example
     * ```js
     *const fn = tree.bufferifyFn((value) => sha256(value))
     *```
     */
    bufferifyFn(f) {
        return (value) => {
            const v = f(value);
            if (Buffer.isBuffer(v)) {
                return v;
            }
            if (this._isHexString(v)) {
                return Buffer.from(v.replace('0x', ''), 'hex');
            }
            if (typeof v === 'string') {
                return Buffer.from(v);
            }
            // crypto-js support
            return Buffer.from(f(crypto_js_1.default.enc.Hex.parse(value.toString('hex'))).toString(crypto_js_1.default.enc.Hex), 'hex');
        };
    }
    /**
     * isHexString
     * @desc Returns true if value is a hex string.
     * @param {String} value
     * @return {Boolean}
     *
     * @example
     * ```js
     *console.log(MerkleTree.isHexString('0x1234'))
     *```
     */
    _isHexString(value) {
        return Base.isHexString(value);
    }
    /**
     * log2
     * @desc Returns the log2 of number.
     * @param {Number} value
     * @return {Number}
     */
    _log2(n) {
        return n === 1 ? 0 : 1 + this._log2((n / 2) | 0);
    }
    /**
     * zip
     * @desc Returns true if value is a hex string.
     * @param {String[]|Number[]|Buffer[]} a - first array
     * @param {String[]|Number[]|Buffer[]} b -  second array
     * @return {String[][]|Number[][]|Buffer[][]}
     *
     * @example
     * ```js
     *const zipped = tree.zip(['a', 'b'],['A', 'B'])
     *console.log(zipped) // [ [ 'a', 'A' ], [ 'b', 'B' ] ]
     *```
     */
    _zip(a, b) {
        return a.map((e, i) => [e, b[i]]);
    }
}
exports.Base = Base;
exports.default = Base;