pragma ever-solidity >= 0.68.0;

import "../libraries/MsgFlag.tsol";

contract Platform {
    address static root;
    uint8 static platformType;
    TvmCell static initialData;
    TvmCell static platformCode;

    constructor(
        TvmCell code,
        TvmCell params,
        address sendGasTo
    ) {
        if (msg.sender != root) {
           msg.sender.transfer({
               value: 0,
               flag: MsgFlag.ALL_NOT_RESERVED + MsgFlag.DESTROY_IF_ZERO,
               bounce: false
           });
        } else {
            initialize(code, params, sendGasTo);
        }
    }

    function initialize(
        TvmCell code,
        TvmCell params,
        address sendGasTo
    ) private {
        TvmBuilder builder;

        builder.store(root);
        builder.store(platformType);
        builder.store(sendGasTo);

        builder.store(platformCode); // ref 1
        builder.store(initialData);  // ref 2
        builder.store(params);       // ref 3

        tvm.setcode(code);
        tvm.setCurrentCode(code);

        onCodeUpgrade(builder.toCell());
    }

    function onCodeUpgrade(TvmCell data) private {}
}