//////////////////////////////////////////////////////////////////////////////////////
//
//  Copyright (c) 2014-present, Egret Technology.
//  All rights reserved.
//  Redistribution and use in source and binary forms, with or without
//  modification, are permitted provided that the following conditions are met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//     * Neither the name of the Egret nor the
//       names of its contributors may be used to endorse or promote products
//       derived from this software without specific prior written permission.
//
//  THIS SOFTWARE IS PROVIDED BY EGRET AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
//  OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
//  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
//  IN NO EVENT SHALL EGRET AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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//  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;LOSS OF USE, DATA,
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//  EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
//////////////////////////////////////////////////////////////////////////////////////


/// <reference path="../types.d.ts" />

var __global = global;
var xml = require("../xml/index");
var utils = require("../utils");
import config = require("./EXMLConfig");
egret.XML = xml;


/**
 * @private
 * Swan 命名空间
 */
export var NS_S: string = "http://ns.egret.com/eui";
export var NS_W: string = "http://ns.egret.com/wing";
var MODULE_NAME = "eui.";
var basicTypes: string[] = ["Array", "boolean", "string", "number"];


var allClasses: { [name: string]: EXMLFile[] } = {};
var allEXMLs: { [name: string]: EXMLFile } = {};

export interface EXMLFile {
    filename: string;
    contents: string;
    className?: string;
    usedClasses?: string[];
    usedEXML?: string[];
    depends?: EXMLDepends;
    preload?: boolean;
    theme?: string;
}

interface EXMLDepends {
    [name: string]: boolean;
}

export function sort(exmlFiles: EXMLFile[]): EXMLFile[] {

    parseEXML(exmlFiles);
    exmlFiles.forEach(file => addDepends(file));

    var sorted: EXMLFile[] = []
    var sortedMap: any = {};

    var preloads = exmlFiles.filter(e => e.preload);

    preloads.forEach(e => {
        insert(e);
    });

    exmlFiles.forEach(e => {
        insert(e);
    });


    function insert(file: EXMLFile) {
        if (file.filename in sortedMap)
            return;
        for (var i in file.depends)
            insert(allEXMLs[i]);
        sorted.push(file);
        sortedMap[file.filename] = true;
    }


    return sorted;
}

function parseEXML(exmlFiles: EXMLFile[]) {

    exmlFiles.forEach((file: EXMLFile) => {
        var xml = egret.XML.parse(file.contents);
        file.className = parseClassName(xml);
        file.usedClasses = parseUsedClass(xml);
        file.usedEXML = parseUsedEXML(xml);
        allClasses[file.className] = allClasses[file.className] || [];
        allClasses[file.className].push(file);
        allEXMLs[file.filename] = file;
    });
}

function addDepends(file: EXMLFile) {
    var depends: EXMLDepends = {};
    file.usedClasses && file.usedClasses.forEach(className => {
        var files = allClasses[className];
        if (!files) {
            //console.log("Cannot find:", className);
            return;
        }
        files.forEach(it => {
            if (it) {
                if (!it.depends)
                    addDepends(it);
                for (var i in it.depends)
                    depends[i] = true;
                depends[it.filename] = true;
            }
        })
    });

    file.usedEXML && file.usedEXML.forEach(path => {
        var it = allEXMLs[path];
        if (it) {
            if (!it.depends)
                addDepends(it);
            for (var i in it.depends)
                depends[i] = true;
            depends[it.filename] = true;
        }
    });

    file.depends = depends;
}

function parseClassName(xml: egret.XML): string {
    if (!xml)
        return null;
    return xml["$class"];
}

function parseUsedClass(xml: egret.XML): string[] {
    var classes: string[] = [];
    visitNodes(xml,
        node => parseNodeClassName(<egret.XML>node),
        classNames => classNames.forEach(className => classes.push(className)));
    return classes;

    function parseNodeClassName(xml: egret.XML): string[] {
        if (!xml)
            return null;
        var classes: string[] = [];
        var className = getClassNameById(xml.localName, xml.namespace);
        if (className)
            classes.push(className);
        var skinName: string = xml["$skinName"];
        if (skinName && skinName.toLowerCase().indexOf(".exml") != skinName.length - 5)
            classes.push(skinName);

        if (classes.length)
            return classes;
        return null;
    }
}

function parseUsedEXML(xml: egret.XML): string[] {
    var files: string[] = [];
    visitNodes(xml,
        node => parseEXMLPathInAttributes(<egret.XML>node),
        path => files.push(path));
    return files;

    function parseEXMLPathInAttributes(xml: egret.XML): string {
        if (!xml)
            return null;
        var skinName: string = xml["$skinName"];
        if (skinName && skinName.toLowerCase().indexOf(".exml") == skinName.length - 5)
            return skinName;
        return null;
    }
}


function visitNodes(xml: egret.XML, condition: (node: egret.XMLNode) => any, callback: (result: any) => void) {
    if (!xml)
        return;
    var result = condition(xml);
    if (result)
        callback(result);
    if (!xml.children || xml.children.length < 1)
        return;
    xml.children.forEach(node => {
        visitNodes(<egret.XML>node, condition, callback);
    });
}


/**
 * @private
 * 根据类的短名ID和命名空间获取完整类名(以"."分隔)
 * @param id 类的短名ID
 * @param ns 命名空间
 */
function getClassNameById(id: string, ns: string): string {
    if (id == "Object" && ns == NS_S) {

    }
    var name: string = "";
    if (basicTypes.indexOf(id) != -1) {

    }
    if (ns == NS_W) {

    }
    else if (!ns || ns == NS_S) {

    }
    else {
        name = ns.substring(0, ns.length - 1) + id
    }
    return name;
}

export function getDtsInfoFromExml(exmlFile: EXMLFile): { className: string, extendName: string } {
    var xml: egret.XML;
    try {
        xml = egret.XML.parse(exmlFile.contents)
    }
    catch (e) {
        console.log(e);
        utils.exit(2002, exmlFile.filename);
    }
    if (!xml) {
        utils.exit(2002, exmlFile.filename);
    }
    var className = config.EXMLConfig.getInstance().getClassNameById(xml.localName, xml.namespace);
    var extendName = "";
    if (xml["$class"]) {
        extendName = className;
        className = xml["$class"];
    }
    return { className: className, extendName: extendName };
}