/**
 * Created by jackyanjiaqi on 16/7/8.
 */
import * as file from "./file";
import PATH = require("path");
import * as CONFIG from "./config";
var __themeDatas: ITheme[];
var __themePaths: string[] = [];

export interface ITheme {
    skins?: { [host: string]: string };
    exmls?: Array<any>;
    autoGenerateExmlsList?: boolean;
}

export function read():ITheme[]{
    //1.找到项目内后缀名为'.thm.json'的主题文件并返回列表
    var themes = searchTheme();
    if (themes.length == 0) {
        console.error("error","*.thm.json not found!");
        return;
    }
    __themePaths = [];
    //2.将主题文件读入内存变成json对象
    __themeDatas = themes.map(themePath => {
        __themePaths.push(themePath);
        //支持增量编译,取出已经编译好的配置代替
        if(CONFIG.isIncrementalCompile && CONFIG.isOutDirSet){
            //检查是否已经有输出的配置文件
            let relativePath:string = PATH.relative(CONFIG.getReleaseDir(),themePath);
            let outThemePath:string = PATH.resolve(CONFIG.getOutDir(),relativePath);
            if(file.exists(outThemePath)){
                try {
                    var data = JSON.parse(file.read(outThemePath));
                    return data || {};
                }
                catch (e) {
                    return {};
                }
            }
        }
        try {
            var data = JSON.parse(file.read(themePath));
            return data || {};
        }
        catch (e) {
            return {};
        }
    });
    return __themeDatas;
}

export function save(outDir?:string){
    __themePaths.forEach((path,index)=>{
        let content:string = JSON.stringify(__themeDatas[index],null,4);
        if(outDir){
            let relativePath:string = PATH.relative(CONFIG.getReleaseDir(),path);
            path = PATH.resolve(outDir,relativePath);
            let dirpath = PATH.dirname(path);
            if(!file.exists(dirpath)){
                file.mkDir(dirpath);
            }
            console.log("saving as '-out' demond:",path);
        }
        file.save(path,content);
    })
}

function searchTheme(): string[] {
    var files = file.searchByFunction(CONFIG.getReleaseDir(), themeFilter);
    console.log(files);
    return files;
}

function themeFilter(f: string) {
    return f.indexOf('.thm.json') > 0;
}