"use strict";

import {Common} from "../Utils/Common.ecma.js";
import {RouteModel} from "../Models/RouteModel.ecma.js";
import {Check} from "../Utils/Checks.ecma.js";
import {RE} from "../Utils/Patterns.ecma.js";

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

/**
 * @class RoutesManager
 * @constructor
 * @param {!AnP} anp 
 * @return {void}
 * @access public
 * @static
 */
export const RoutesManager = (function(){

    /**
     * @callback continue_callback
     * @param {!boolean} ok 
     * @return {boolean}
     */

    /**
     * @callback default_callback
     * @return {void}
     */

    /**
     * @constructs RoutesManager
     * @param {!AnP} anp 
     * @return {void}
     * @access private
     * @static
     */
    const RoutesManager = function(anp){

        /** @type {RoutesManager} */
        const self = this, 
              /** @type {Array.<RouteModel>} */
              routes = [];
        /** @type {boolean} */
        let started = false, 
            /** @type {string} */
            last_url = "", 
            /** @type {number|null} */
            thread = null;

        /**
         * @returns {void}
         * @access private
         */
        const constructor = () => {

            thread = anp.threads.add(thread_method, {
                bucle : true, 
                autoplay : true
            });

        };

        /**
         * @returns {void}
         * @access private
         */
        const thread_method = () => {

            /** @type {string} */
            const current_url = window.location.hash.substring(1);

            if(last_url != current_url){
                last_url = current_url;
                self.refresh();
            };

        };

        /**
         * @returns {void}
         * @access public
         */
        this.refresh = () => {
            self.go(last_url);
        };

        /**
         * @param {?continue_callback} callback 
         * @returns {boolean}
         * @access public
         */
        this.update = (callback = null) => {
            Common.execute_array(["default_routes_files", "routes_files", "default_routes", "routes"], (key, next) => {
                self.add(anp.settings.get(key), true, next);
            }, callback, true);
        };

        /**
         * @param {?continue_callback} callback 
         * @returns {boolean}
         * @access public
         */
        this.reset = (callback = null) => {

            routes.splice(0, routes.length);

            self.update(callback);

        };

        /**
         * @param {?continue_callback} callback 
         * @returns {boolean}
         * @access public
         */
        this.start = (callback = null) => {

            /** @type {continue_callback} */
            const end = ok => Common.execute(callback, ok);

            if(started){
                end(false);
                return false;
            };
            started = true;

            self.update(() => end(true));

            return true;
        };

        /**
         * @param {?continue_callback} callback 
         * @returns {boolean}
         * @access public
         */
        this.close = (callback = null) => {

            /** @type {continue_callback} */
            const end = ok => Common.execute(callback, ok);

            if(!started){
                end(false);
                return false;
            };
            started = false;

            end(true);

            return true;
        };

        /**
         * @param {!(string|RegExp)} route_path 
         * @param {!string} view 
         * @param {!boolean} overwrite 
         * @returns {boolean}
         * @access private
         */
        const set_new = (route_path, view, permissions, overwrite) => {
           
            /** @type {RouteModel} */
            const route = new RouteModel(route_path, view, permissions);
            let i = null;

            if(!routes.some((exists, j) => {
                if(exists.route.source == route.route.source){
                    i = j;
                    return true;
                };
                return false;
            })){
                if(i === null)
                    routes.push(route);
                else if(overwrite)
                    routes[i] = route;
                return true;
            };
            return false;
        };

        /**
         * @param {?any} inputs 
         * @param {!boolean} [overwrite = false] 
         * @param {?default_callback} [callback = null] 
         * @returns {void}
         * @access public
         */
        this.add = (inputs, overwrite = false, callback = null) => {
            if(Check.is_string(inputs)){
                
                /** @type {RegExpMatchArray} */
                const matches = (inputs = inputs.trim()).match(RE.ROUTES);

                if(matches){
                    set_new(matches[1], matches[2], matches[3] ? matches[3].split(",") : [], overwrite);
                    Common.execute(callback);
                }else if(Check.is_json(inputs))
                    self.add(JSON.parse(inputs), overwrite, callback);
                else 
                    anp.files.load_json(inputs, data => {
                        self.add(data, overwrite, callback);
                    });

            }else if(Check.is_array(inputs)){
                if(inputs.length >= 2 && inputs.length <= 3 && (
                    Check.is_string(inputs[0]) && inputs[0] == inputs[0].trim() && 
                    Check.is_key(inputs[1]) && 
                    !inputs[2] || (Check.is_array(inputs[2]) && inputs[2].every(Check.is_key))
                )){
                    set_new(inputs[0], inputs[1], inputs[3], overwrite);
                    Common.execute(callback);
                    return;
                };

                /** @type {number} */
                let i = 0;
                /** @type {number} */
                const l = inputs.length, 
                      /** @type {default_callback} */
                      end = () => ++ i == l && Common.execute(callback);

                inputs.forEach(subinputs => {
                    self.add(subinputs, overwrite, end);
                });

            }else if(Check.is_dictionary(inputs)){
                set_new(inputs.route, inputs.view, inputs.permissions || [], overwrite);
                Common.execute(callback);
            }else 
                Common.execute(callback);
        };

        /**
         * @param {!string} path 
         * @returns {void}
         * @access public
         */
        this.go = path => {

            const main = anp.item_self.querySelector("main");

            if(!main)
                return;

            main.innerHTML = "";

            for(const route of routes){

                /** @type {[boolean, Object.<string, string>]} */
                const [ok, variables] = route.check(path);

                if(ok){
                    Common.HTML("main", anp.views.get(route.view, variables))
                    break;
                };

            };
            
        };

        constructor();
    };

    return RoutesManager;
})();