import { existsSync, readFileSync, writeFileSync } from "fs";
import { ensureFileSync } from "fs-extra";
import path from "path";

export class CfgData {
    version: string = "1.0.0";
    md5: string = "";
}

export class CfgUtils {
    private static getCfgFile(pkg: string) {
        if (!pkg || pkg.trim() === '') {
            throw new Error('包名不能为空');
        }
        return path.join(__dirname, `../../../temp/max-framework-hotupdate/${pkg}.json`);
    }

    static getCfgData(pkg: string): CfgData {
        const cfgFile = CfgUtils.getCfgFile(pkg);
        if (existsSync(cfgFile)) {
            const data = readFileSync(cfgFile, 'utf-8');
            const cfgData = JSON.parse(data) as CfgData;
            console.log('读取配置文件', pkg, JSON.stringify(cfgData));
            return cfgData;
        } else {
            const data = new CfgData();
            CfgUtils.savaConfig(pkg, data);
            return data;
        }
    }

    static savaConfig(pkg: string, data: CfgData) {
        console.log('保存配置文件', pkg, JSON.stringify(data));
        const cfgFile = CfgUtils.getCfgFile(pkg);
        ensureFileSync(cfgFile);
        writeFileSync(cfgFile, JSON.stringify(data), 'utf-8');
    }
}