"use strict";

import {Utils} from "../../Utils/Utils.ecma.js";
import {Check} from "../../Utils/Check.ecma.js";
import {FormatModule} from "../FormatModule.ecma.js";

/**
 * @typedef {import("../FormatModule.ecma.js").FormatModule} FormatModule
 */

/**
 * @class SelectFormat
 * @constructor
 * @param {!FormatModule} format 
 * @returns {void}
 * @access public
 * @static
 */
export const SelectFormat = (function(){

    /**
     * @constructs SelectFormat
     * @param {!FormatModule} format 
     * @returns {void}
     * @access private
     * @static
     */
    const SelectFormat = function(format){

        /** @type {SelectFormat} */
        const self = this;

        /**
         * @returns {void}
         * @access private
         */
        const constructor = () => {
            format.modes.select = self.get;
            format.checks.select = self.check;
            format.modes.Select = (inputs, shared, fragments) => self.get(inputs, {
                ...shared, capitalized : true
            }, fragments);
            format.checks.Select = (string, inputs, shared, fragments) => self.check(string, inputs, {
                ...shared, capitalized : true
            }, fragments);
        };

        /**
         * @param {!(string|Array.<any|null>)} inputs 
         * @param {!Object.<string, any|null>} [shared = {}] 
         * @param {!Array.<string>} [fragments = []] 
         * @returns {string}
         * @access public
         */
        this.get = (inputs, shared = {}, fragments = []) => {

            /** @type {[[number, number], string, Array.<string>]} */
            const [range, separator, original_items] = (
                      Check.is_string(inputs) ? ((_, range, separator, items) => [
                          range.split("-").map(Number), separator, items.split("|")
                      ])(...inputs.match(/^([^,]+),([^,]+),(.*)$/)) :
                      Check.is_array(inputs) ? inputs : 
                  []), 
                  /** @type {number} */
                  i = Utils.get_random(...range);

            if(!i)
                return "";

            /** @type {Array.<string>} */
            const items = [...original_items];
            /** @type {number} */
            let l = items.length, 
                /** @type {string} */
                results;

            if(l < 2)
                results = items.join("");
            else{

                Utils.randomize_array(items);
                items.splice(0, l - i);
                l = items.length;

                results = (
                    l < 2 ? items[0] : 
                items.slice(0, l - 1).join(", ") + (
                    !separator ? " " : 
                    /^[a-z 0-9]+$/i.test(separator.trim()) ? " " + separator.trim() + " " : 
                separator) + items[l - 1]);

            };
            results = format.execute(results, shared, fragments);

            return shared.capitalized ? results.replace(/^./, character => character.toUpperCase()) : results;
        };

        /**
         * @param {!string} string 
         * @param {!(string|Array.<string>)} inputs 
         * @param {!Object.<string, any|null>} [shared = {}] 
         * @param {!Array.<string>} [fragments = []] 
         * @returns {number}
         * @access public
         */
        this.check = (string, inputs, shared = {}, fragments = []) => format.check_select(string, (
            Check.is_string(inputs) ? ((_, range, separator, options) => [
                range.split("-").map(Number), separator, options.split("|")
            ])(...inputs.match(/^([^,]+),([^,]+),(.*)$/)) :
            Check.is_array(inputs) ? inputs : 
        []), shared, fragments);

        constructor();

    };

    return SelectFormat;
})();