app

App = {
    web3Provider: null,
    contracts: {},
    minBetAmount: 0,
    loading: false,

    init: function () {
        console.log("initializing app ...");

        $(".none").hide();
        $(".active").hide();
        $(".end").hide();
        $(".claim").hide();

        App.setLoading();

        return App.refreshView();
    },

    initWeb3: async function () {
        console.log("initializing web3 ...");

        // Modern dapp browsers...
        if (window.ethereum) {
            App.web3Provider = window.ethereum;
            try {
                // Request account access
                await window.ethereum.enable();
            } catch (error) {
                // User denied account access...
                console.error("User denied account access")
            }
        }
        // Legacy dapp browsers...
        else if (window.web3) {
            App.web3Provider = window.web3.currentProvider;
        }
        // If no injected web3 instance is detected, fall back to Ganache
        else {
            App.web3Provider = new Web3.providers.HttpProvider('http://localhost:7545');
        }
        web3 = new Web3(App.web3Provider);

        return App.bindEvents();
    },


    bindEvents: function () {
        $("button.refresh").on('click', App.refreshView);
        $("button.create").on('click', App.createLottery);
        $("button.buy").on('click', App.buyTicket);
        // $("button.end").on('click', App.endLottery);
        // $("button.claim").on('click', App.claimPrize);
    },

    setLoading: function () {
        App.loading = !App.loading;
        $(".loading").prop("hidden", App.loading);
    },

    refreshView: function () {

        console.log("refreshing ...");

        if (App.web3Provider === null
            || (Object.entries(App.contracts).length === 0
                && App.contracts.constructor === Object)) {
            $(".none").show();
            $(".active").hide();
            $(".end").hide();
            $(".claim").hide();

            return App.initWeb3();
        } else {
            App.contracts.Lottery.getStatus.call(
                function (err, message) {
                    if (!err) {
                        $("#message").text(message);
                    }
                }
            );

            App.contracts.Lottery.getRemainingTimeInSeconds.call(
                function (err, timeMessage) {
                    if (!err) {

                        if (timeMessage.includes("seconds")) {
                            $(".none").hide();
                            $(".active").show();
                            $(".end").hide();
                            $(".claim").hide();

                            $("#time").text(timeMessage);

                            App.contracts.Lottery.fee.call(
                                function (err, message) {
                                    if (!err) {
                                        $("#fee").text(message.toNumber());
                                    }
                                });

                            App.contracts.Lottery.ticketPrice.call(
                                function (err, message) {
                                    if (!err) {
                                        $("#ticket").text(message.toNumber());
                                    }
                                });

                            App.contracts.Lottery.lotteryRange.call(
                                function (err, message) {
                                    if (!err) {
                                        $("#range").text(message.toNumber());
                                    }
                                });

                            App.contracts.Lottery.prizeSize.call(
                                function (err, message) {
                                    if (!err) {
                                        $("#prize").text(message.toNumber());
                                    }
                                });

                            App.contracts.Lottery.lotteryAddress.call(
                                function (err, message) {
                                    if (!err) {
                                        $("#address").text(message);
                                    }
                                });

                        } else {

                            App.minBetAmount = 0;

                            App.contracts.Lottery.winningNumber.call(
                                function (err, message) {
                                    if (!err) {
                                        if (message.toNumber() === 0) {
                                            $(".none").hide();
                                            $(".active").hide();
                                            $(".end").show();
                                            $(".claim").hide();

                                        } else {
                                            $("#winner").text(message.toNumber());

                                            $(".none").hide();
                                            $(".active").hide();
                                            $(".end").hide();
                                            $(".claim").show();
                                        }
                                    }
                                });
                        }
                    }
                });
        }
    },

    createLottery: function () {
        console.log("creating ...");

        App.setLoading();

        let compiledContract;
        $.getJSON('./build/contracts/Lottery.json', function (data) {
            compiledContract = data;
        }).then(() => {

            let abi = compiledContract.abi;
            let bytecode = compiledContract.bytecode;
            let gasEstimate = web3.eth.estimateGas({data: bytecode}, () => {
                let MyContract = web3.eth.contract(abi);

                App.minBetAmount = +$("#inputPrice").val() + +$("#inputFee").val();
                $("#inputBet").val(App.minBetAmount);

                let myContractReturned = MyContract.new($("#inputDuration").val(),
                    $("#inputPrice").val(),
                    $("#inputFee").val(),
                    $("#inputRange").val(),
                    {
                        from: web3.eth.accounts[0],
                        data: bytecode,
                        gas: gasEstimate,
                        value: $("#inputValue").val()
                    },
                    function (err, contract) {
                        if (!err) {
                            if (!contract.address) {
                                console.log(contract.transactionHash)
                            } else {
                                console.log(contract.address); // the contract address

                                App.contracts.Lottery = contract;

                                $("#inputDuration").val("");
                                $("#inputPrice").val("");
                                $("#inputFee").val("");
                                $("#inputRange").val("");
                                $("#inputValue").val("0");

                                App.setLoading();

                                return App.refreshView();
                            }
                        }
                    });
            });
        });
    },

    buyTicket: function () {
        console.log("buying ...");

        App.setLoading();

        //TODO not working
        let gasEstimate;
        App.contracts.Lottery
            .buyTicket
            .estimateGas($("#inputName").val(),
                $("#inputNumber").val(),
                {
                    gas: 5000000,
                    value: $("#inputBet").val()
                },
                function (err, message) {
                    if (!err) {
                        gasEstimate = message;
                    }
                });

        console.log(gasEstimate);

        App.contracts.Lottery
            .buyTicket
            .sendTransaction($("#inputName").val(), $("#inputNumber").val(),
                {
                    from: web3.eth.accounts[0],
                    value: $("#inputBet").val()
                },
                function (err, message) {
                    if (!err) {
                        console.log(message);

                        $("#inputName").val("");
                        $("#inputNumber").val("");
                        $("#inputBet").val(App.minBetAmount);

                        $("#message").text(message);

                        App.setLoading();

                        return App.refreshView();
                    }
                }
            );
    },
};

$(function () {
    $(window).load(function () {
        App.init();
    });
});