/*
 * @project: TERA
 * @version: Development (beta)
 * @license: MIT (not for evil)
 * @copyright: Yuriy Ivanov (Vtools) 2017-2019 [progr76@gmail.com]
 * Web: https://terafoundation.org
 * Twitter: https://twitter.com/terafoundation
 * Telegram:  https://t.me/terafoundation
*/

"use strict";
import * as fs from 'fs'
const FORMAT_EVAL_SEND = "{MaxBlockNum:uint,Code:str,Sign:arr64}";
module.exports = class CCode extends require("./base")
{
    LastEvalCodeNum
    constructor(SetKeyPair, RunIP, RunPort, UseRNDHeader, bVirtual) {
        super(SetKeyPair, RunIP, RunPort, UseRNDHeader, bVirtual)
        if (!global.ADDRLIST_MODE && !this.VirtualMode) {
            setInterval(this.CheckLoadCodeTime.bind(this), 10 * 1000)
        }
        this.LastEvalCodeNum = 0
        global.CheckCreateDir(global.GetDataPath("Update"))
    }
    CheckLoadCodeTime() {
        if (global.START_LOAD_CODE.StartLoadNode && global.START_LOAD_CODE.StartLoadVersionNum) {
            var Delta = (new Date() as any) - global.START_LOAD_CODE.StartLoadVersionNumTime;
            if (Delta > 20 * 1000) {
                global.ToError("Cannot load code version:" + global.START_LOAD_CODE.StartLoadVersionNum + " from node: " + global.START_LOAD_CODE.StartLoadNode.ip + ":" + global.START_LOAD_CODE.StartLoadNode.port)
                this.ClearLoadCode()
            }
        }
    }
    ClearLoadCode() {
        global.START_LOAD_CODE.StartLoad = undefined
        global.START_LOAD_CODE.StartLoadVersionNum = 0
        global.START_LOAD_CODE.StartLoadVersionNumTime = 0
    }
    StartLoadCode(Node, CodeVersion) {
        var VersionNum = CodeVersion.VersionNum;
        global.START_LOAD_CODE.StartLoad = CodeVersion
        global.START_LOAD_CODE.StartLoadNode = Node
        global.START_LOAD_CODE.StartLoadVersionNum = VersionNum
        global.START_LOAD_CODE.StartLoadVersionNumTime = new Date()
        var fname = global.GetDataPath("Update/wallet-" + VersionNum + ".zip");
        if (fs.existsSync(fname)) {
            this.UseCode(VersionNum, false)
            return;
        }
        var Context = { "VersionNum": VersionNum };
        this.SendF(Node, { "Method": "GETCODE", "Context": Context, "Data": VersionNum })
    }
    static
        GETCODE_F() {
        return "uint";
    }
    RETCODE(Info) {
        var VersionNum = Info.Context.VersionNum;
        if (!VersionNum || !global.START_LOAD_CODE.StartLoad)
            return;
        var fname = global.GetDataPath("Update/wallet-" + VersionNum + ".zip");
        if (!fs.existsSync(fname)) {
            var Hash = global.shaarr(Info.Data);
            if (global.CompareArr(Hash, global.START_LOAD_CODE.StartLoad.Hash) === 0) {
                var file_handle = fs.openSync(fname, "w");
                fs.writeSync(file_handle, Info.Data, 0, Info.Data.length)
                fs.closeSync(file_handle)
                this.UseCode(VersionNum, global.USE_AUTO_UPDATE)
            }
            else {
                global.ToError("Error check hash of version code :" + global.START_LOAD_CODE.StartLoadVersionNum + " from node: " + Info.Node.ip + ":" + Info.Node.port)
                this.ClearLoadCode()
                this.AddCheckErrCount(Info.Node, 1, "Error check hash of version code")
            }
        }
    }
    UseCode(VersionNum, bUpdate) {
        if (bUpdate) {
            UpdateCodeFiles(VersionNum)
        }
        if (global.global.START_LOAD_CODE.StartLoad) {
            global.CODE_VERSION = global.START_LOAD_CODE.StartLoad
            this.ClearLoadCode()
        }
    }
    SetNewCodeVersion(Data, PrivateKey) {
        var fname = global.GetDataPath("ToUpdate/wallet.zip");
        if (fs.existsSync(fname)) {
            var fname2 = global.GetDataPath("Update/wallet-" + Data.VersionNum + ".zip");
            if (fs.existsSync(fname2)) {
                fs.unlinkSync(fname2)
            }
            var data = fs.readFileSync(fname);
            var Hash = global.shaarr(data);
            var file_handle = fs.openSync(fname2, "w");
            fs.writeSync(file_handle, data, 0, data.length)
            fs.closeSync(file_handle)
            var SignArr = arr2(Hash, GetArrFromValue(Data.VersionNum));
            var Sign = secp256k1.sign(SHA3BUF(SignArr), PrivateKey).signature;
            global.CODE_VERSION = Data
            global.CODE_VERSION.Hash = Hash
            global.CODE_VERSION.Sign = Sign
            return "OK Set new code version=" + Data.VersionNum;
        }
        else {
            return "File not exist: " + fname;
        }
    }
};

function UpdateCodeFiles(StartNum) {
    var fname = global.GetDataPath("Update");
    if (!fs.existsSync(fname))
        return 0;
    var arr = fs.readdirSync(fname);
    var arr2 = [];
    for (var i = 0; i < arr.length; i++) {
        if (arr[i].substr(0, 7) === "wallet-") {
            arr2.push(parseInt(arr[i].substr(7)));
        }
    }
    arr2.sort(function(a, b) {
        return a - b;
    });
    for (var i = 0; i < arr2.length; i++) {
        var Num = arr2[i];
        var Name = "wallet-" + Num + ".zip";
        var Path = fname + "/" + Name;
        global.ToLog("Check file:" + Name);
        if (fs.existsSync(Path)) {
            if (StartNum === Num) {
                global.ToLog("UnpackCodeFile:" + Name);
                UnpackCodeFile(Path);
                if (StartNum % 2 === 0) {
                    global.RestartNode(1);
                }
                else {
                }
                return 1;
            }
            else {
                global.ToLog("Delete old file update:" + Name);
                fs.unlinkSync(Path);
            }
        }
    }
    return 0;
};
global.UnpackCodeFile = UnpackCodeFile;

function UnpackCodeFile(fname) {
    var data = fs.readFileSync(fname);
    var reader = ZIP.Reader(data);
    reader.forEach(function(entry) {
        var Name = entry.getName();
        var Path = GetCodePath(Name);
        if (entry.isFile()) {
            var buf = entry.getData();
            global.CheckCreateDir(Path, true, true);
            var file_handle = fs.openSync(Path, "w");
            fs.writeSync(file_handle, buf, 0, buf.length);
            fs.closeSync(file_handle);
        }
        else {
        }
    });
    reader.close();
};
global.RestartNode = function RestartNode(bForce) {
    global.NeedRestart = 1;
    setTimeout(DoExit, 5000);
    if (global.nw || global.NWMODE) {
    } else {
        StopChildProcess();
        global.ToLog("********************************** FORCE RESTART!!!");
        return;
    }
    if (this.ActualNodes) {
        var it = this.ActualNodes.iterator(), Node;
        while ((Node = it.next()) !== null) {
            if (Node.Socket)
                CloseSocket(Node.Socket, "Restart");
        }
    }
    this.StopServer();
    this.StopNode();
    StopChildProcess();
    global.ToLog("****************************************** RESTART!!!");
    global.ToLog("EXIT 1");
};

function DoExit() {
    global.ToLog("EXIT 2");
    if (global.nw || global.NWMODE) {
        global.ToLog("RESTART NW");
        var StrRun = '"' + process.argv[0] + '" .\n';
        StrRun += '"' + process.argv[0] + '" .\n';
        SaveToFile("run-next.bat", StrRun);
        const child_process = require('child_process');
        child_process.exec("run-next.bat", { shell: true });
    }
    global.ToLog("EXIT 3");
    process.exit(0);
};