// ==UserScript==
// @name         Premium Exchange - Buy Resources
// @description  Automatically buy resources up to a predefined amount of resources
// @author       scriptspace
// @version      2.1.2
// @include      https://*/game.php*screen=market*
// @namespace    scriptspace
// ==/UserScript==
const incoming = "Incoming"; // Change this accordingly to your language. In Portuguese it would be const incoming = "Entrada";
const timeout = 9000; // Time in ms between transactions. Too low and the game won't allow it
let topUp, price, stack;
let start = false; // Start script or stop script, default is stop

createInput();

function createInput() {
    "use strict";
    const userInputParent = _ID("premium_exchange_form"); // Parent element

    // Create input for setting how much res should be bought
    const divScript = document.createElement("div");
    divScript.setAttribute("id", "divScript");
    userInputParent.parentNode.insertBefore(divScript, userInputParent);
    _ID("divScript").innerHTML = "<p>Top up warehouse to: <input id='topUpInput'> " +
        "<button id='topUpOk' class='btn'>OK</button><span id='topUpText'></span></p><p>Buy when price above: <input id='priceInput'> " +
        "<button id='priceOk' class='btn'>OK</button><span id='priceText'></span></p>" +
        "<p>Buy max this much at once: <input id='stackInput'> <button id='stackOk' class='btn'>OK</button><span id='stackText'></span></p>" +
        "<p>Buy the whole stock at once: <input type=\"checkbox\" name=\"buyStock\" id=\"buyStock\"></p><span style='color:red'>ATTENTION! This might deplete your Premium Points completely, as it buys everything that is available!</span>" +
        "<p>Buy resources:</p><p><input type=\"checkbox\" name=\"wood\" id=\"woodCheck\"> Wood <input type=\"checkbox\" " +
        "name=\"stone\" id=\"stoneCheck\"> Stone <input type=\"checkbox\" name=\"iron\" id=\"ironCheck\"> Iron</p>" +
        "<p><button id='start' class='btn'></button></p>";
    if (!start) {
        _ID("start").innerHTML = "Start";
    } else {
        _ID("start").innerHTML = "Stop";
    }
    if (localStorage.topUp) {
        _ID("topUpInput").value = localStorage.topUp;
        topUp = localStorage.topUp;
    }
    if (localStorage.price) {
        _ID("priceInput").value = localStorage.price;
        price = localStorage.price;
    }
    if (localStorage.stack) {
        _ID("stackInput").value = localStorage.stack;
        stack = localStorage.stack;
    }
}

_ID("topUpOk").addEventListener("click", function() {
    topUp = _ID("topUpInput").value;
    localStorage.topUp = topUp;
    _ID("topUpText").innerHTML = "Top up to " + topUp;
});
_ID("priceOk").addEventListener("click", function() {
    price = _ID("priceInput").value;
    localStorage.price = price;
    _ID("priceText").innerHTML = "Buy when price above " + price;
});
_ID("stackOk").addEventListener("click", function() {
    stack = _ID("stackInput").value;
    localStorage.stack = stack;
    _ID("stackText").innerHTML = "Buy only " + stack + " resources at once";
});
_ID("start").addEventListener("click", function() {
    if (start) {
        start = false;
        _ID("start").innerHTML = "Start";
    } else {
        start = true;
        _ID("start").innerHTML = "Stop";
        buyRes();
    }
});

_ID("topUpInput").addEventListener("keydown", clickOnKeyPress.bind(this, 13, "#topUpOk"));
_ID("priceInput").addEventListener("keydown", clickOnKeyPress.bind(this, 13, "#priceOk"));
_ID("stackInput").addEventListener("keydown", clickOnKeyPress.bind(this, 13, "#stackOk"));

/**
 *
 * @param wh Amount of resources in the warehouse
 * @param price Current price of the resource
 * @param stock Amount of resources in the premium exchange stock
 * @param inc Amount of incoming resources
 * @param input DOM Element of the text box
 * @param buy Amount of resources to buy
 * @constructor
 */
function Resource(wh, price, stock, inc, input) {
    this.wh = wh;
    this.price = price;
    this.stock = stock;
    this.inc = inc;
    this.inputBuy = input;
    this.buy = 0;
}

/**
 * Get all the info of the resources
 * @type {Resource}
 */
let wood = new Resource(game_data.village.wood, parseInt(__("#premium_exchange_rate_wood > div:nth-child(1)").innerText), parseInt(__("#premium_exchange_stock_wood").innerText), 0, __("#premium_exchange_buy_wood > div:nth-child(1) > input"));
let iron = new Resource(game_data.village.iron, parseInt(__("#premium_exchange_rate_iron > div:nth-child(1)").innerText), parseInt(__("#premium_exchange_stock_iron").innerText), 0, __("#premium_exchange_buy_iron > div:nth-child(1) > input"));
let stone = new Resource(game_data.village.stone, parseInt(__("#premium_exchange_rate_stone > div:nth-child(1)").innerText), parseInt(__("#premium_exchange_stock_stone").innerText), 0, __("#premium_exchange_buy_stone > div:nth-child(1) > input"));
let warehouse = game_data.village.storage_max;


if (start) {
    buyRes();
}
const interval = setInterval(function() {
    if (start && (!document.querySelector("#fader") || document.querySelector("#fader").style.display === "none")) {
        buyRes();
    }
}, timeout + Math.random() * 890);

function buyRes() {
    getRes();
    // If buy everything is checked and warehouse + incoming resource of each resource is less than what the warehouse should be topped up to
    if (__("#buyStock").checked || wood.wh + wood.inc < topUp || stone.wh + stone.inc < topUp || iron.wh + iron.inc < topUp) {
        if ((__("#buyStock").checked && __("#woodCheck").checked || wood.price > price && wood.wh + wood.inc < topUp && __("#woodCheck").checked) && wood.stock > price) {
            // Buy wood
            wood.buy = topUp - wood.wh - wood.inc;
            // If for some reason, which shouldn't occur, the amount to buy goes below 0, adjust the amount to buy
            if (wood.buy <= 0) {
                wood.buy = wood.price - 2;
            }
            // Only buy a certain amount of resources (stack) at once so the price can be still seen
            if(wood.buy > stack) {
                wood.buy = stack;
            }
            if(wood.buy > wood.stock || __("#buyStock").checked && wood.stock > 0) {
                wood.buy = wood.stock - 1;
            }
            stone.inputBuy.value = "";
            iron.inputBuy.value = "";
            //wood.buy = setZeroIfNaN(wood.buy);
            if(wood.buy === 0) {
                clearInterval(interval);
                console.log("wood:");
                console.log(wood);
                alert("This error message shouldn't pop up. Please open the console with CTRL+Shift+J and send a message to the developer via Discord, FunnyPocketBook#9373");
                return;
            }
            wood.inputBuy.value = wood.buy;
            clickBuy();
        } else if ((__("#buyStock").checked && __("#stoneCheck").checked || stone.price > price && stone.wh + stone.inc < topUp && __("#stoneCheck").checked) && stone.stock > price) {
            // Buy stone
            stone.buy = topUp - stone.wh - stone.inc;
            if (stone.buy <= 0) {
                stone.buy = stone.price - 2;
            }
            if(stone.buy > stack) {
                stone.buy = stack;
            }
            if(stone.buy > stone.stock || __("#buyStock").checked && stone.stock > 0) {
                stone.buy = stone.stock - 1;
            }
            wood.inputBuy.value = "";
            iron.inputBuy.value = "";
            //stone.buy = setZeroIfNaN(stone.buy);
            if(stone.buy === 0) {
                clearInterval(interval);
                console.log("stone:");
                console.log(stone);
                alert("This error message shouldn't pop up. Please open the console with CTRL+Shift+J and send a message to the developer via Discord, FunnyPocketBook#9373");
                return;
            }
            stone.inputBuy.value = stone.buy;
            clickBuy();
        } else if ((__("#buyStock").checked && __("#ironCheck").checked || iron.price > price && iron.wh + iron.inc < topUp && __("#ironCheck").checked) && iron.stock > price) {
            // Buy iron
            iron.buy = topUp - iron.wh - iron.inc;
            if (iron.buy <= 0) {
                iron.buy = iron.price - 2;
            }
            if(iron.buy > stack) {
                iron.buy = stack;
            }
            if(iron.buy > iron.stock || __("#buyStock").checked && iron.stock > 0) {
                iron.buy = iron.stock - 1;
            }
            wood.inputBuy.value = "";
            stone.inputBuy.value = "";
            //iron.buy = setZeroIfNaN(iron.buy);
            if(iron.buy === 0) {
                clearInterval(interval);
                console.log("iron:");
                console.log(iron);
                alert("This error message shouldn't pop up. Please open the console with CTRL+Shift+J and send a message to the developer via Discord, FunnyPocketBook#9373");
                return;
            }
            iron.inputBuy.value = iron.buy;
            clickBuy();
        }
    }
}

function clickBuy() {
    __("#premium_exchange_form > input").click();
    setTimeout(function() {
        __("#premium_exchange > div > div > div.confirmation-buttons > button.btn.evt-confirm-btn.btn-confirm-yes").click();
    }, 1000);
}

function _ID(selector) {
    return document.getElementById(selector);
}

function __(selector) {
    return document.querySelector(selector);
}

/**
 * Update resource objects
 */
function getRes() {
    let parentInc;
    warehouse = game_data.village.storage_max;
    wood.wh = game_data.village.wood;
    stone.wh = game_data.village.stone;
    iron.wh = game_data.village.iron;
    wood.stock = parseInt(__("#premium_exchange_stock_wood").innerText);
    iron.stock = parseInt(__("#premium_exchange_stock_iron").innerText);
    stone.stock = parseInt(__("#premium_exchange_stock_stone").innerText);
    wood.price = parseInt(__("#premium_exchange_rate_wood > div:nth-child(1)").innerText);
    stone.price = parseInt(__("#premium_exchange_rate_stone > div:nth-child(1)").innerText);
    iron.price = parseInt(__("#premium_exchange_rate_iron > div:nth-child(1)").innerText);
    try {
        if (__("#market_status_bar > table:nth-child(2) > tbody > tr > th:nth-child(1)").innerHTML.split(" ")[0].replace(":", "") === incoming) {
            parentInc = __("#market_status_bar > table:nth-child(2) > tbody > tr > th:nth-child(1)");
        }
    } catch(e) {}
    try {
        if (__("#market_status_bar > table:nth-child(2) > tbody > tr > th:nth-child(2)").innerHTML.split(" ")[0].replace(":", "") === incoming) {
            parentInc = __("#market_status_bar > table:nth-child(2) > tbody > tr > th:nth-child(2)");
        }
    } catch(e) {}

    try {
        wood.inc = parseInt(setZeroIfNaN(parseInt(parentInc.querySelector(".wood").parentElement.innerText.replace(".", ""))));
    } catch (e) {}
    try {
        stone.inc = parseInt(setZeroIfNaN(parseInt(parentInc.querySelector(".stone").parentElement.innerText.replace(".", ""))));
    } catch (e) {}
    try {
        iron.inc = parseInt(setZeroIfNaN(parseInt(parentInc.querySelector(".iron").parentElement.innerText.replace(".", ""))));
    } catch (e) {}
}

function clickOnKeyPress(key, selector) {
    "use strict";
    if (event.defaultPrevented) {
        return; // Should do nothing if the default action has been cancelled
    }
    let handled = false;
    if (event.key === key) {
        document.querySelector(selector).click();
        handled = true;
    } else if (event.keyIdentifier === key) {
        document.querySelector(selector).click();
        handled = true;
    } else if (event.keyCode === key) {
        document.querySelector(selector).click();
        handled = true;
    }
    if (handled) {
        event.preventDefault();
    }
}

function setZeroIfNaN(x) {
    "use strict";
    if ((typeof x === 'number') && (x % 1 === 0)) {
        return x;
    } else {
        return 0;
    };
}