LawinServerV2/routes/mcp.js

const express = require("express");
const app = express.Router();

const Friends = require("../model/friends");
const Profile = require("../model/profiles.js");
const profileManager = require("../structs/profile.js");
const error = require("../structs/error.js");
const functions = require("../structs/functions.js");

const { verifyToken, verifyClient } = require("../tokenManager/tokenVerify.js");

global.giftReceived = {};

app.post("/fortnite/api/game/v2/profile/*/client/SetReceiveGiftsEnabled", verifyToken, async (req, res) => {
    const profiles = await Profile.findOne({ accountId: req.user.accountId });

    if (!await profileManager.validateProfile(req.query.profileId, profiles)) return error.createError(
        "errors.com.epicgames.modules.profiles.operation_forbidden",
        `Unable to find template configuration for profile ${req.query.profileId}`, 
        [req.query.profileId], 12813, undefined, 403, res
    );

    let profile = profiles.profiles[req.query.profileId];

    if (req.query.profileId != "common_core") return error.createError(
        "errors.com.epicgames.modules.profiles.invalid_command",
        `SetReceiveGiftsEnabled is not valid on ${req.query.profileId} profile`, 
        ["SetReceiveGiftsEnabled",req.query.profileId], 12801, undefined, 400, res
    );

    const memory = functions.GetVersionInfo(req);

    let ApplyProfileChanges = [];
    let BaseRevision = profile.rvn;
    let ProfileRevisionCheck = (memory.build >= 12.20) ? profile.commandRevision : profile.rvn;
    let QueryRevision = req.query.rvn || -1;

    if (typeof req.body.bReceiveGifts != "boolean") return ValidationError("bReceiveGifts", "a boolean", res);

    profile.stats.attributes.allowed_to_receive_gifts = req.body.bReceiveGifts;

    ApplyProfileChanges.push({
        "changeType": "statModified",
        "name": "allowed_to_receive_gifts",
        "value": profile.stats.attributes.allowed_to_receive_gifts
    });

    if (ApplyProfileChanges.length > 0) {
        profile.rvn += 1;
        profile.commandRevision += 1;
        profile.updated = new Date().toISOString();

        await profiles.updateOne({ $set: { [`profiles.${req.query.profileId}`]: profile } });
    }

    if (QueryRevision != ProfileRevisionCheck) {
        ApplyProfileChanges = [{
            "changeType": "fullProfileUpdate",
            "profile": profile
        }];
    }

    res.json({
        profileRevision: profile.rvn || 0,
        profileId: req.query.profileId,
        profileChangesBaseRevision: BaseRevision,
        profileChanges: ApplyProfileChanges,
        profileCommandRevision: profile.commandRevision || 0,
        serverTime: new Date().toISOString(),
        responseVersion: 1
    });
});

app.post("/fortnite/api/game/v2/profile/*/client/GiftCatalogEntry", verifyToken, async (req, res) => {
    const profiles = await Profile.findOne({ accountId: req.user.accountId });

    if (!await profileManager.validateProfile(req.query.profileId, profiles)) return error.createError(
        "errors.com.epicgames.modules.profiles.operation_forbidden",
        `Unable to find template configuration for profile ${req.query.profileId}`, 
        [req.query.profileId], 12813, undefined, 403, res
    );

    let profile = profiles.profiles[req.query.profileId];

    if (req.query.profileId != "common_core") return error.createError(
        "errors.com.epicgames.modules.profiles.invalid_command",
        `GiftCatalogEntry is not valid on ${req.query.profileId} profile`, 
        ["GiftCatalogEntry",req.query.profileId], 12801, undefined, 400, res
    );

    const memory = functions.GetVersionInfo(req);

    let Notifications = [];
    let ApplyProfileChanges = [];
    let BaseRevision = profile.rvn;
    let ProfileRevisionCheck = (memory.build >= 12.20) ? profile.commandRevision : profile.rvn;
    let QueryRevision = req.query.rvn || -1;
    let validGiftBoxes = [
        "GiftBox:gb_default",
        "GiftBox:gb_giftwrap1",
        "GiftBox:gb_giftwrap2",
        "GiftBox:gb_giftwrap3"
    ];

    let missingFields = checkFields(["offerId","receiverAccountIds","giftWrapTemplateId"], req.body);

    if (missingFields.fields.length > 0) return error.createError(
        "errors.com.epicgames.validation.validation_failed",
        `Validation Failed. [${missingFields.fields.join(", ")}] field(s) is missing.`,
        [`[${missingFields.fields.join(", ")}]`], 1040, undefined, 400, res
    );

    if (typeof req.body.offerId != "string") return ValidationError("offerId", "a string", res);
    if (!Array.isArray(req.body.receiverAccountIds)) return ValidationError("receiverAccountIds", "an array", res);
    if (typeof req.body.giftWrapTemplateId != "string") return ValidationError("giftWrapTemplateId", "a string", res);
    if (typeof req.body.personalMessage != "string") return ValidationError("personalMessage", "a string", res);

    if (req.body.personalMessage.length > 100) return error.createError(
        "errors.com.epicgames.string.length_check",
        `The personalMessage you provided is longer than 100 characters, please make sure your personal message is less than 100 characters long and try again.`,
        undefined, 16027, undefined, 400, res
    );

    if (!validGiftBoxes.includes(req.body.giftWrapTemplateId)) return error.createError(
        "errors.com.epicgames.giftbox.invalid",
        `The giftbox you provided is invalid, please provide a valid giftbox and try again.`,
        undefined, 16027, undefined, 400, res
    );

    if (req.body.receiverAccountIds.length < 1 || req.body.receiverAccountIds.length > 5) return error.createError(
        "errors.com.epicgames.item.quantity.range_check",
        `You need to atleast gift to 1 person and can not gift to more than 5 people.`,
        undefined, 16027, undefined, 400, res
    );

    if (checkIfDuplicateExists(req.body.receiverAccountIds)) return error.createError(
        "errors.com.epicgames.array.duplicate_found",
        `There are duplicate accountIds in receiverAccountIds, please remove the duplicates and try again.`,
        undefined, 16027, undefined, 400, res
    );

    let sender = await Friends.findOne({ accountId: req.user.accountId }).lean();

    for (let receiverId of req.body.receiverAccountIds) {
        if (typeof receiverId != "string") return error.createError(
            "errors.com.epicgames.array.invalid_string",
            `There is a non-string object inside receiverAccountIds, please provide a valid value and try again.`,
            undefined, 16027, undefined, 400, res
        );

        if (!sender.list.accepted.find(i => i.accountId == receiverId) && receiverId != req.user.accountId) return error.createError(
            "errors.com.epicgames.friends.no_relationship",
            `User ${req.user.accountId} is not friends with ${receiverId}`,
            [req.user.accountId,receiverId], 28004, undefined, 403, res
        );
    }

    if (!profile.items) profile.items = {};

    let findOfferId = functions.getOfferID(req.body.offerId);
    if (!findOfferId) return error.createError(
        "errors.com.epicgames.fortnite.id_invalid",
        `Offer ID (id: '${req.body.offerId}') not found`, 
        [req.body.offerId], 16027, undefined, 400, res
    );

    switch (true) {
        case /^BR(Daily|Weekly)Storefront$/.test(findOfferId.name):
            if (findOfferId.offerId.prices[0].currencyType.toLowerCase() == "mtxcurrency") {
                let paid = false;
                let price = (findOfferId.offerId.prices[0].finalPrice) * req.body.receiverAccountIds.length;

                for (let key in profile.items) {
                    if (!profile.items[key].templateId.toLowerCase().startsWith("currency:mtx")) continue;

                    let currencyPlatform = profile.items[key].attributes.platform;
                    if ((currencyPlatform.toLowerCase() != profile.stats.attributes.current_mtx_platform.toLowerCase()) && (currencyPlatform.toLowerCase() != "shared")) continue;

                    if (profile.items[key].quantity < price) return error.createError(
                        "errors.com.epicgames.currency.mtx.insufficient",
                        `You can not afford this item (${price}), you only have ${profile.items[key].quantity}.`,
                        [`${price}`,`${profile.items[key].quantity}`], 1040, undefined, 400, res
                    );

                    profile.items[key].quantity -= price;
                        
                    ApplyProfileChanges.push({
                        "changeType": "itemQuantityChanged",
                        "itemId": key,
                        "quantity": profile.items[key].quantity
                    });
        
                    paid = true;
        
                    break;
                }

                if (!paid && price > 0) return error.createError(
                    "errors.com.epicgames.currency.mtx.insufficient",
                    `You can not afford this item.`,
                    [], 1040, undefined, 400, res
                );
            }

            for (let receiverId of req.body.receiverAccountIds) {
                const receiverProfiles = await Profile.findOne({ accountId: receiverId });
                let athena = receiverProfiles.profiles["athena"];
                let common_core = receiverProfiles.profiles["common_core"];

                if (!athena.items) athena.items = {};

                if (!common_core.stats.attributes.allowed_to_receive_gifts) return error.createError(
                    "errors.com.epicgames.user.gift_disabled",
                    `User ${receiverId} has disabled receiving gifts.`,
                    [receiverId], 28004, undefined, 403, res
                );

                for (let itemGrant of findOfferId.offerId.itemGrants) {
                    for (let itemId in athena.items) {
                        if (itemGrant.templateId.toLowerCase() == athena.items[itemId].templateId.toLowerCase()) return error.createError(
                            "errors.com.epicgames.modules.gamesubcatalog.purchase_not_allowed",
                            `User ${receiverId} already owns this item.`,
                            [receiverId], 28004, undefined, 403, res
                        );
                    }
                }
            }

            for (let receiverId of req.body.receiverAccountIds) {
                const receiverProfiles = await Profile.findOne({ accountId: receiverId });
                let athena = receiverProfiles.profiles["athena"];
                let common_core = ((receiverId == req.user.accountId) ? profile : receiverProfiles.profiles["common_core"]);

                let giftBoxItemID = functions.MakeID();
                let giftBoxItem = {
                    "templateId": req.body.giftWrapTemplateId,
                    "attributes": {
                        "fromAccountId": req.user.accountId,
                        "lootList": [],
                        "params": {
                            "userMessage": req.body.personalMessage
                        },
                        "level": 1,
                        "giftedOn": new Date().toISOString()
                    },
                    "quantity": 1
                };

                if (!athena.items) athena.items = {};
                if (!common_core.items) common_core.items = {};

                for (let value of findOfferId.offerId.itemGrants) {
                    const ID = functions.MakeID();

                    const Item = {
                        "templateId": value.templateId,
                        "attributes": {
                            "item_seen": false,
                            "variants": [],
                        },
                        "quantity": 1
                    };
            
                    athena.items[ID] = Item;

                    giftBoxItem.attributes.lootList.push({
                        "itemType": Item.templateId,
                        "itemGuid": ID,
                        "itemProfile": "athena",
                        "quantity": 1
                    });
                }

                common_core.items[giftBoxItemID] = giftBoxItem;

                if (receiverId == req.user.accountId) ApplyProfileChanges.push({
                    "changeType": "itemAdded",
                    "itemId": giftBoxItemID,
                    "item": common_core.items[giftBoxItemID]
                });

                athena.rvn += 1;
                athena.commandRevision += 1;
                athena.updated = new Date().toISOString();

                common_core.rvn += 1;
                common_core.commandRevision += 1;
                common_core.updated = new Date().toISOString();

                await receiverProfiles.updateOne({ $set: { [`profiles.athena`]: athena, [`profiles.common_core`]: common_core } });

                global.giftReceived[receiverId] = true;

                functions.sendXmppMessageToId({
                    type: "com.epicgames.gift.received",
                    payload: {},
                    timestamp: new Date().toISOString()
                }, receiverId);
            }
        break;
    }

    if (ApplyProfileChanges.length > 0 && !req.body.receiverAccountIds.includes(req.user.accountId)) {
        profile.rvn += 1;
        profile.commandRevision += 1;
        profile.updated = new Date().toISOString();

        await profiles.updateOne({ $set: { [`profiles.${req.query.profileId}`]: profile } });
    }

    if (QueryRevision != ProfileRevisionCheck) {
        ApplyProfileChanges = [{
            "changeType": "fullProfileUpdate",
            "profile": profile
        }];
    }

    res.json({
        profileRevision: profile.rvn || 0,
        profileId: req.query.profileId,
        profileChangesBaseRevision: BaseRevision,
        profileChanges: ApplyProfileChanges,
        notifications: Notifications,
        profileCommandRevision: profile.commandRevision || 0,
        serverTime: new Date().toISOString(),
        responseVersion: 1
    });
});

app.post("/fortnite/api/game/v2/profile/*/client/RemoveGiftBox", verifyToken, async (req, res) => {
    const profiles = await Profile.findOne({ accountId: req.user.accountId });

    if (!await profileManager.validateProfile(req.query.profileId, profiles)) return error.createError(
        "errors.com.epicgames.modules.profiles.operation_forbidden",
        `Unable to find template configuration for profile ${req.query.profileId}`, 
        [req.query.profileId], 12813, undefined, 403, res
    );

    let profile = profiles.profiles[req.query.profileId];

    if (req.query.profileId != "common_core" && req.query.profileId != "profile0") return error.createError(
        "errors.com.epicgames.modules.profiles.invalid_command",
        `RemoveGiftBox is not valid on ${req.query.profileId} profile`, 
        ["RemoveGiftBox",req.query.profileId], 12801, undefined, 400, res
    );

    const memory = functions.GetVersionInfo(req);

    let ApplyProfileChanges = [];
    let BaseRevision = profile.rvn;
    let ProfileRevisionCheck = (memory.build >= 12.20) ? profile.commandRevision : profile.rvn;
    let QueryRevision = req.query.rvn || -1;

    if (typeof req.body.giftBoxItemId == "string") {
        if (!profile.items[req.body.giftBoxItemId]) return error.createError(
            "errors.com.epicgames.fortnite.id_invalid",
            `Item (id: '${req.body.giftBoxItemId}') not found`, 
            [req.body.giftBoxItemId], 16027, undefined, 400, res
        );

        if (!profile.items[req.body.giftBoxItemId].templateId.startsWith("GiftBox:")) return error.createError(
            "errors.com.epicgames.fortnite.id_invalid",
            `The specified item id is not a giftbox.`, 
            [req.body.giftBoxItemId], 16027, undefined, 400, res
        );

        delete profile.items[req.body.giftBoxItemId];

        ApplyProfileChanges.push({
            "changeType": "itemRemoved",
            "itemId": req.body.giftBoxItemId
        });
    }

    if (Array.isArray(req.body.giftBoxItemIds)) {
        for (let giftBoxItemId of req.body.giftBoxItemIds) {
            if (typeof giftBoxItemId != "string") continue;
            if (!profile.items[giftBoxItemId]) continue;
            if (!profile.items[giftBoxItemId].templateId.startsWith("GiftBox:")) continue;
    
            delete profile.items[giftBoxItemId];
    
            ApplyProfileChanges.push({
                "changeType": "itemRemoved",
                "itemId": giftBoxItemId
            });
        }
    }

    if (ApplyProfileChanges.length > 0) {
        profile.rvn += 1;
        profile.commandRevision += 1;
        profile.updated = new Date().toISOString();

        await profiles.updateOne({ $set: { [`profiles.${req.query.profileId}`]: profile } });
    }

    if (QueryRevision != ProfileRevisionCheck) {
        ApplyProfileChanges = [{
            "changeType": "fullProfileUpdate",
            "profile": profile
        }];
    }

    res.json({
        profileRevision: profile.rvn || 0,
        profileId: req.query.profileId,
        profileChangesBaseRevision: BaseRevision,
        profileChanges: ApplyProfileChanges,
        profileCommandRevision: profile.commandRevision || 0,
        serverTime: new Date().toISOString(),
        responseVersion: 1
    });
});

app.post("/fortnite/api/game/v2/profile/*/client/PurchaseCatalogEntry", verifyToken, async (req, res) => {
    const profiles = await Profile.findOne({ accountId: req.user.accountId });

    if (!await profileManager.validateProfile(req.query.profileId, profiles)) return error.createError(
        "errors.com.epicgames.modules.profiles.operation_forbidden",
        `Unable to find template configuration for profile ${req.query.profileId}`, 
        [req.query.profileId], 12813, undefined, 403, res
    );

    let profile = profiles.profiles[req.query.profileId];
    let athena = profiles.profiles["athena"];

    if (req.query.profileId != "common_core" && req.query.profileId != "profile0") return error.createError(
        "errors.com.epicgames.modules.profiles.invalid_command",
        `PurchaseCatalogEntry is not valid on ${req.query.profileId} profile`, 
        ["PurchaseCatalogEntry",req.query.profileId], 12801, undefined, 400, res
    );

    let MultiUpdate = [{
        "profileRevision": athena.rvn || 0,
        "profileId": "athena",
        "profileChangesBaseRevision": athena.rvn || 0,
        "profileChanges": [],
        "profileCommandRevision": athena.commandRevision || 0,
    }];

    const memory = functions.GetVersionInfo(req);

    let Notifications = [];
    let ApplyProfileChanges = [];
    let BaseRevision = profile.rvn;
    let ProfileRevisionCheck = (memory.build >= 12.20) ? profile.commandRevision : profile.rvn;
    let QueryRevision = req.query.rvn || -1;

    let missingFields = checkFields(["offerId"], req.body);

    if (missingFields.fields.length > 0) return error.createError(
        "errors.com.epicgames.validation.validation_failed",
        `Validation Failed. [${missingFields.fields.join(", ")}] field(s) is missing.`,
        [`[${missingFields.fields.join(", ")}]`], 1040, undefined, 400, res
    );

    if (typeof req.body.offerId != "string") return ValidationError("offerId", "a string", res);
    if (typeof req.body.purchaseQuantity != "number") return ValidationError("purchaseQuantity", "a number", res);
    if (req.body.purchaseQuantity < 1) return error.createError(
        "errors.com.epicgames.validation.validation_failed",
        `Validation Failed. 'purchaseQuantity' is less than 1.`,
        ['purchaseQuantity'], 1040, undefined, 400, res
    );

    if (!profile.items) profile.items = {};
    if (!athena.items) athena.items = {};

    let findOfferId = functions.getOfferID(req.body.offerId);
    if (!findOfferId) return error.createError(
        "errors.com.epicgames.fortnite.id_invalid",
        `Offer ID (id: '${req.body.offerId}') not found`, 
        [req.body.offerId], 16027, undefined, 400, res
    );

    switch (true) {
        case /^BR(Daily|Weekly|Season)Storefront$/.test(findOfferId.name):
            Notifications.push({
                "type": "CatalogPurchase",
                "primary": true,
                "lootResult": {
                    "items": []
                }
            });

            for (let value of findOfferId.offerId.itemGrants) {
                const ID = functions.MakeID();

                for (let itemId in athena.items) {
                    if (value.templateId.toLowerCase() == athena.items[itemId].templateId.toLowerCase()) return error.createError(
                        "errors.com.epicgames.offer.already_owned",
                        `You have already bought this item before.`,
                        undefined, 1040, undefined, 400, res
                    );
                }

                const Item = {
                    "templateId": value.templateId,
                    "attributes": {
                        "item_seen": false,
                        "variants": [],
                    },
                    "quantity": 1
                };
        
                athena.items[ID] = Item;
        
                MultiUpdate[0].profileChanges.push({
                    "changeType": "itemAdded",
                    "itemId": ID,
                    "item": athena.items[ID]
                });
        
                Notifications[0].lootResult.items.push({
                    "itemType": Item.templateId,
                    "itemGuid": ID,
                    "itemProfile": "athena",
                    "quantity": 1
                });
            }

            if (findOfferId.offerId.prices[0].currencyType.toLowerCase() == "mtxcurrency") {
                let paid = false;

                for (let key in profile.items) {
                    if (!profile.items[key].templateId.toLowerCase().startsWith("currency:mtx")) continue;

                    let currencyPlatform = profile.items[key].attributes.platform;
                    if ((currencyPlatform.toLowerCase() != profile.stats.attributes.current_mtx_platform.toLowerCase()) && (currencyPlatform.toLowerCase() != "shared")) continue;

                    if (profile.items[key].quantity < findOfferId.offerId.prices[0].finalPrice) return error.createError(
                        "errors.com.epicgames.currency.mtx.insufficient",
                        `You can not afford this item (${findOfferId.offerId.prices[0].finalPrice}), you only have ${profile.items[key].quantity}.`,
                        [`${findOfferId.offerId.prices[0].finalPrice}`,`${profile.items[key].quantity}`], 1040, undefined, 400, res
                    );

                    profile.items[key].quantity -= findOfferId.offerId.prices[0].finalPrice;
                        
                    ApplyProfileChanges.push({
                        "changeType": "itemQuantityChanged",
                        "itemId": key,
                        "quantity": profile.items[key].quantity
                    });
        
                    paid = true;
        
                    break;
                }

                if (!paid && findOfferId.offerId.prices[0].finalPrice > 0) return error.createError(
                    "errors.com.epicgames.currency.mtx.insufficient",
                    `You can not afford this item (${findOfferId.offerId.prices[0].finalPrice}).`,
                    [`${findOfferId.offerId.prices[0].finalPrice}`], 1040, undefined, 400, res
                );
            }

            if (MultiUpdate[0].profileChanges.length > 0) {
                athena.rvn += 1;
                athena.commandRevision += 1;
                athena.updated = new Date().toISOString();

                MultiUpdate[0].profileRevision = athena.rvn;
                MultiUpdate[0].profileCommandRevision = athena.commandRevision;
            }
        break;
    }

    if (ApplyProfileChanges.length > 0) {
        profile.rvn += 1;
        profile.commandRevision += 1;
        profile.updated = new Date().toISOString();

        await profiles.updateOne({ $set: { [`profiles.${req.query.profileId}`]: profile, [`profiles.athena`]: athena } });
    }

    if (QueryRevision != ProfileRevisionCheck) {
        ApplyProfileChanges = [{
            "changeType": "fullProfileUpdate",
            "profile": profile
        }];
    }

    res.json({
        profileRevision: profile.rvn || 0,
        profileId: req.query.profileId,
        profileChangesBaseRevision: BaseRevision,
        profileChanges: ApplyProfileChanges,
        notifications: Notifications,
        profileCommandRevision: profile.commandRevision || 0,
        serverTime: new Date().toISOString(),
        multiUpdate: MultiUpdate,
        responseVersion: 1
    });
});

app.post("/fortnite/api/game/v2/profile/*/client/MarkItemSeen", verifyToken, async (req, res) => {
    const profiles = await Profile.findOne({ accountId: req.user.accountId });

    if (!await profileManager.validateProfile(req.query.profileId, profiles)) return error.createError(
        "errors.com.epicgames.modules.profiles.operation_forbidden",
        `Unable to find template configuration for profile ${req.query.profileId}`, 
        [req.query.profileId], 12813, undefined, 403, res
    );

    let profile = profiles.profiles[req.query.profileId];

    const memory = functions.GetVersionInfo(req);

    if (req.query.profileId == "athena") profile.stats.attributes.season_num = memory.season;

    let ApplyProfileChanges = [];
    let BaseRevision = profile.rvn;
    let ProfileRevisionCheck = (memory.build >= 12.20) ? profile.commandRevision : profile.rvn;
    let QueryRevision = req.query.rvn || -1;

    let missingFields = checkFields(["itemIds"], req.body);

    if (missingFields.fields.length > 0) return error.createError(
        "errors.com.epicgames.validation.validation_failed",
        `Validation Failed. [${missingFields.fields.join(", ")}] field(s) is missing.`,
        [`[${missingFields.fields.join(", ")}]`], 1040, undefined, 400, res
    );

    if (!Array.isArray(req.body.itemIds)) return ValidationError("itemIds", "an array", res);

    if (!profile.items) profile.items = {};
    
    for (let i in req.body.itemIds) {
        if (!profile.items[req.body.itemIds[i]]) continue;
        
        profile.items[req.body.itemIds[i]].attributes.item_seen = true;
        
        ApplyProfileChanges.push({
            "changeType": "itemAttrChanged",
            "itemId": req.body.itemIds[i],
            "attributeName": "item_seen",
            "attributeValue": true
        });
    }

    if (ApplyProfileChanges.length > 0) {
        profile.rvn += 1;
        profile.commandRevision += 1;
        profile.updated = new Date().toISOString();

        await profiles.updateOne({ $set: { [`profiles.${req.query.profileId}`]: profile } });
    }

    if (QueryRevision != ProfileRevisionCheck) {
        ApplyProfileChanges = [{
            "changeType": "fullProfileUpdate",
            "profile": profile
        }];
    }

    res.json({
        profileRevision: profile.rvn || 0,
        profileId: req.query.profileId,
        profileChangesBaseRevision: BaseRevision,
        profileChanges: ApplyProfileChanges,
        profileCommandRevision: profile.commandRevision || 0,
        serverTime: new Date().toISOString(),
        responseVersion: 1
    });
});

app.post("/fortnite/api/game/v2/profile/*/client/SetItemFavoriteStatusBatch", verifyToken, async (req, res) => {
    const profiles = await Profile.findOne({ accountId: req.user.accountId });

    if (!await profileManager.validateProfile(req.query.profileId, profiles)) return error.createError(
        "errors.com.epicgames.modules.profiles.operation_forbidden",
        `Unable to find template configuration for profile ${req.query.profileId}`, 
        [req.query.profileId], 12813, undefined, 403, res
    );

    if (req.query.profileId != "athena") return error.createError(
        "errors.com.epicgames.modules.profiles.invalid_command",
        `SetItemFavoriteStatusBatch is not valid on ${req.query.profileId} profile`, 
        ["SetItemFavoriteStatusBatch",req.query.profileId], 12801, undefined, 400, res
    );

    let profile = profiles.profiles[req.query.profileId];

    const memory = functions.GetVersionInfo(req);

    if (req.query.profileId == "athena") profile.stats.attributes.season_num = memory.season;

    let ApplyProfileChanges = [];
    let BaseRevision = profile.rvn;
    let ProfileRevisionCheck = (memory.build >= 12.20) ? profile.commandRevision : profile.rvn;
    let QueryRevision = req.query.rvn || -1;

    let missingFields = checkFields(["itemIds","itemFavStatus"], req.body);

    if (missingFields.fields.length > 0) return error.createError(
        "errors.com.epicgames.validation.validation_failed",
        `Validation Failed. [${missingFields.fields.join(", ")}] field(s) is missing.`,
        [`[${missingFields.fields.join(", ")}]`], 1040, undefined, 400, res
    );

    if (!Array.isArray(req.body.itemIds)) return ValidationError("itemIds", "an array", res);
    if (!Array.isArray(req.body.itemFavStatus)) return ValidationError("itemFavStatus", "an array", res);

    if (!profile.items) profile.items = {};

    for (let i in req.body.itemIds) {
        if (!profile.items[req.body.itemIds[i]]) continue;
        if (typeof req.body.itemFavStatus[i] != "boolean") continue;

        profile.items[req.body.itemIds[i]].attributes.favorite = req.body.itemFavStatus[i];

        ApplyProfileChanges.push({
            "changeType": "itemAttrChanged",
            "itemId": req.body.itemIds[i],
            "attributeName": "favorite",
            "attributeValue": profile.items[req.body.itemIds[i]].attributes.favorite
        });
    }

    if (ApplyProfileChanges.length > 0) {
        profile.rvn += 1;
        profile.commandRevision += 1;
        profile.updated = new Date().toISOString();

        await profiles.updateOne({ $set: { [`profiles.${req.query.profileId}`]: profile } });
    }

    if (QueryRevision != ProfileRevisionCheck) {
        ApplyProfileChanges = [{
            "changeType": "fullProfileUpdate",
            "profile": profile
        }];
    }

    res.json({
        profileRevision: profile.rvn || 0,
        profileId: req.query.profileId,
        profileChangesBaseRevision: BaseRevision,
        profileChanges: ApplyProfileChanges,
        profileCommandRevision: profile.commandRevision || 0,
        serverTime: new Date().toISOString(),
        responseVersion: 1
    });
});

app.post("/fortnite/api/game/v2/profile/*/client/SetBattleRoyaleBanner", verifyToken, async (req, res) => {
    const profiles = await Profile.findOne({ accountId: req.user.accountId });

    if (!await profileManager.validateProfile(req.query.profileId, profiles)) return error.createError(
        "errors.com.epicgames.modules.profiles.operation_forbidden",
        `Unable to find template configuration for profile ${req.query.profileId}`, 
        [req.query.profileId], 12813, undefined, 403, res
    );

    if (req.query.profileId != "athena") return error.createError(
        "errors.com.epicgames.modules.profiles.invalid_command",
        `SetBattleRoyaleBanner is not valid on ${req.query.profileId} profile`, 
        ["SetBattleRoyaleBanner",req.query.profileId], 12801, undefined, 400, res
    );

    let profile = profiles.profiles[req.query.profileId];

    const memory = functions.GetVersionInfo(req);

    if (req.query.profileId == "athena") profile.stats.attributes.season_num = memory.season;

    let ApplyProfileChanges = [];
    let BaseRevision = profile.rvn;
    let ProfileRevisionCheck = (memory.build >= 12.20) ? profile.commandRevision : profile.rvn;
    let QueryRevision = req.query.rvn || -1;

    let missingFields = checkFields(["homebaseBannerIconId","homebaseBannerColorId"], req.body);

    if (missingFields.fields.length > 0) return error.createError(
        "errors.com.epicgames.validation.validation_failed",
        `Validation Failed. [${missingFields.fields.join(", ")}] field(s) is missing.`,
        [`[${missingFields.fields.join(", ")}]`], 1040, undefined, 400, res
    );

    if (typeof req.body.homebaseBannerIconId != "string") return ValidationError("homebaseBannerIconId", "a string", res);
    if (typeof req.body.homebaseBannerColorId != "string") return ValidationError("homebaseBannerColorId", "a string", res);

    let bannerProfileId = memory.build < 3.5 ? "profile0" : "common_core";

    let HomebaseBannerIconID = "";
    let HomebaseBannerColorID = "";

    if (!profiles.profiles[bannerProfileId].items) profiles.profiles[bannerProfileId].items = {};

    for (let itemId in profiles.profiles[bannerProfileId].items) {
        let templateId = profiles.profiles[bannerProfileId].items[itemId].templateId;

        if (templateId.toLowerCase() == `HomebaseBannerIcon:${req.body.homebaseBannerIconId}`.toLowerCase()) { HomebaseBannerIconID = itemId; continue; }
        if (templateId.toLowerCase() == `HomebaseBannerColor:${req.body.homebaseBannerColorId}`.toLowerCase()) { HomebaseBannerColorID = itemId; continue; }

        if (HomebaseBannerIconID && HomebaseBannerColorID) break;
    }

    if (!HomebaseBannerIconID) return error.createError(
        "errors.com.epicgames.fortnite.item_not_found",
        `Banner template 'HomebaseBannerIcon:${req.body.homebaseBannerIconId}' not found in profile`, 
        [`HomebaseBannerIcon:${req.body.homebaseBannerIconId}`], 16006, undefined, 400, res
    );

    if (!HomebaseBannerColorID) return error.createError(
        "errors.com.epicgames.fortnite.item_not_found",
        `Banner template 'HomebaseBannerColor:${req.body.homebaseBannerColorId}' not found in profile`, 
        [`HomebaseBannerColor:${req.body.homebaseBannerColorId}`], 16006, undefined, 400, res
    );

    if (!profile.items) profile.items = {};

    let activeLoadoutId = profile.stats.attributes.loadouts[profile.stats.attributes.active_loadout_index];

    profile.stats.attributes.banner_icon = req.body.homebaseBannerIconId;
    profile.stats.attributes.banner_color = req.body.homebaseBannerColorId;

    profile.items[activeLoadoutId].attributes.banner_icon_template = req.body.homebaseBannerIconId;
    profile.items[activeLoadoutId].attributes.banner_color_template = req.body.homebaseBannerColorId;

    ApplyProfileChanges.push({
        "changeType": "statModified",
        "name": "banner_icon",
        "value": profile.stats.attributes.banner_icon
    });
    
    ApplyProfileChanges.push({
        "changeType": "statModified",
        "name": "banner_color",
        "value": profile.stats.attributes.banner_color
    });

    if (ApplyProfileChanges.length > 0) {
        profile.rvn += 1;
        profile.commandRevision += 1;
        profile.updated = new Date().toISOString();

        await profiles.updateOne({ $set: { [`profiles.${req.query.profileId}`]: profile } });
    }

    if (QueryRevision != ProfileRevisionCheck) {
        ApplyProfileChanges = [{
            "changeType": "fullProfileUpdate",
            "profile": profile
        }];
    }

    res.json({
        profileRevision: profile.rvn || 0,
        profileId: req.query.profileId,
        profileChangesBaseRevision: BaseRevision,
        profileChanges: ApplyProfileChanges,
        profileCommandRevision: profile.commandRevision || 0,
        serverTime: new Date().toISOString(),
        responseVersion: 1
    });
});

app.post("/fortnite/api/game/v2/profile/*/client/EquipBattleRoyaleCustomization", verifyToken, async (req, res) => {
    const profiles = await Profile.findOne({ accountId: req.user.accountId });

    if (!await profileManager.validateProfile(req.query.profileId, profiles)) return error.createError(
        "errors.com.epicgames.modules.profiles.operation_forbidden",
        `Unable to find template configuration for profile ${req.query.profileId}`, 
        [req.query.profileId], 12813, undefined, 403, res
    );

    if (req.query.profileId != "athena") return error.createError(
        "errors.com.epicgames.modules.profiles.invalid_command",
        `EquipBattleRoyaleCustomization is not valid on ${req.query.profileId} profile`, 
        ["EquipBattleRoyaleCustomization",req.query.profileId], 12801, undefined, 400, res
    );

    let profile = profiles.profiles[req.query.profileId];

    const memory = functions.GetVersionInfo(req);

    if (req.query.profileId == "athena") profile.stats.attributes.season_num = memory.season;

    let ApplyProfileChanges = [];
    let BaseRevision = profile.rvn;
    let ProfileRevisionCheck = (memory.build >= 12.20) ? profile.commandRevision : profile.rvn;
    let QueryRevision = req.query.rvn || -1;
    let specialCosmetics = [
        "AthenaCharacter:cid_random",
        "AthenaBackpack:bid_random",
        "AthenaPickaxe:pickaxe_random",
        "AthenaGlider:glider_random",
        "AthenaSkyDiveContrail:trails_random",
        "AthenaItemWrap:wrap_random",
        "AthenaMusicPack:musicpack_random",
        "AthenaLoadingScreen:lsid_random"
    ];

    let missingFields = checkFields(["slotName"], req.body);

    if (missingFields.fields.length > 0) return error.createError(
        "errors.com.epicgames.validation.validation_failed",
        `Validation Failed. [${missingFields.fields.join(", ")}] field(s) is missing.`,
        [`[${missingFields.fields.join(", ")}]`], 1040, undefined, 400, res
    );

    if (typeof req.body.itemToSlot != "string") return ValidationError("itemToSlot", "a string", res);
    if (typeof req.body.slotName != "string") return ValidationError("slotName", "a string", res);

    if (!profile.items) profile.items = {};

    if (!profile.items[req.body.itemToSlot] && req.body.itemToSlot) {
        let item = req.body.itemToSlot;

        if (!specialCosmetics.includes(item)) {
            return error.createError(
                "errors.com.epicgames.fortnite.id_invalid",
                `Item (id: '${req.body.itemToSlot}') not found`, 
                [req.body.itemToSlot], 16027, undefined, 400, res
            );
        } else {
            if (!item.startsWith(`Athena${req.body.slotName}:`)) return error.createError(
                "errors.com.epicgames.fortnite.id_invalid",
                `Cannot slot item of type ${item.split(":")[0]} in slot of category ${req.body.slotName}`, 
                [item.split(":")[0],req.body.slotName], 16027, undefined, 400, res
            );
        }
    }

    if (profile.items[req.body.itemToSlot]) {
        if (!profile.items[req.body.itemToSlot].templateId.startsWith(`Athena${req.body.slotName}:`)) return error.createError(
            "errors.com.epicgames.fortnite.id_invalid",
            `Cannot slot item of type ${profile.items[req.body.itemToSlot].templateId.split(":")[0]} in slot of category ${req.body.slotName}`, 
            [profile.items[req.body.itemToSlot].templateId.split(":")[0],req.body.slotName], 16027, undefined, 400, res
        );

        let Variants = req.body.variantUpdates;

        if (Array.isArray(Variants)) {
            for (let i in Variants) {
                if (typeof Variants[i] != "object") continue;
                if (!Variants[i].channel) continue;
                if (!Variants[i].active) continue;

                let index = profile.items[req.body.itemToSlot].attributes.variants.findIndex(x => x.channel == Variants[i].channel);

                if (index == -1) continue;
                if (!profile.items[req.body.itemToSlot].attributes.variants[index].owned.includes(Variants[i].active)) continue;

                profile.items[req.body.itemToSlot].attributes.variants[index].active = Variants[i].active;
            }

            ApplyProfileChanges.push({
                "changeType": "itemAttrChanged",
                "itemId": req.body.itemToSlot,
                "attributeName": "variants",
                "attributeValue": profile.items[req.body.itemToSlot].attributes.variants
            });
        }
    }

    let slotNames = ["Character","Backpack","Pickaxe","Glider","SkyDiveContrail","MusicPack","LoadingScreen"];

    let activeLoadoutId = profile.stats.attributes.loadouts[profile.stats.attributes.active_loadout_index];
    let templateId = profile.items[req.body.itemToSlot] ? profile.items[req.body.itemToSlot].templateId : req.body.itemToSlot;
    
    switch (req.body.slotName) {
        case "Dance":
            if (!profile.items[activeLoadoutId].attributes.locker_slots_data.slots[req.body.slotName]) break;

            if (typeof req.body.indexWithinSlot != "number") return ValidationError("indexWithinSlot", "a number", res);

            if (req.body.indexWithinSlot >= 0 && req.body.indexWithinSlot <= 5) {
                profile.stats.attributes.favorite_dance[req.body.indexWithinSlot] = req.body.itemToSlot;
                profile.items[activeLoadoutId].attributes.locker_slots_data.slots.Dance.items[req.body.indexWithinSlot] = templateId;

                ApplyProfileChanges.push({
                    "changeType": "statModified",
                    "name": "favorite_dance",
                    "value": profile.stats.attributes["favorite_dance"]
                });
            }
        break;

        case "ItemWrap":
            if (!profile.items[activeLoadoutId].attributes.locker_slots_data.slots[req.body.slotName]) break;

            if (typeof req.body.indexWithinSlot != "number") return ValidationError("indexWithinSlot", "a number", res);

            switch (true) {
                case req.body.indexWithinSlot >= 0 && req.body.indexWithinSlot <= 7:
                    profile.stats.attributes.favorite_itemwraps[req.body.indexWithinSlot] = req.body.itemToSlot;
                    profile.items[activeLoadoutId].attributes.locker_slots_data.slots.ItemWrap.items[req.body.indexWithinSlot] = templateId;

                    ApplyProfileChanges.push({
                        "changeType": "statModified",
                        "name": "favorite_itemwraps",
                        "value": profile.stats.attributes["favorite_itemwraps"]
                    });
                break;

                case req.body.indexWithinSlot == -1:
                    for (let i = 0; i < 7; i++) {
                        profile.stats.attributes.favorite_itemwraps[i] = req.body.itemToSlot;
                        profile.items[activeLoadoutId].attributes.locker_slots_data.slots.ItemWrap.items[i] = templateId;
                    }

                    ApplyProfileChanges.push({
                        "changeType": "statModified",
                        "name": "favorite_itemwraps",
                        "value": profile.stats.attributes["favorite_itemwraps"]
                    });
                break;
            }
        break;

        default:
            if (!slotNames.includes(req.body.slotName)) break;
            if (!profile.items[activeLoadoutId].attributes.locker_slots_data.slots[req.body.slotName]) break;

            if (req.body.slotName == "Pickaxe" || req.body.slotName == "Glider") {
                if (!req.body.itemToSlot) return error.createError(
                    "errors.com.epicgames.fortnite.id_invalid",
                    `${req.body.slotName} can not be empty.`, 
                    [req.body.slotName], 16027, undefined, 400, res
                );
            }

            profile.stats.attributes[(`favorite_${req.body.slotName}`).toLowerCase()] = req.body.itemToSlot;
            profile.items[activeLoadoutId].attributes.locker_slots_data.slots[req.body.slotName].items = [templateId];

            ApplyProfileChanges.push({
                "changeType": "statModified",
                "name": (`favorite_${req.body.slotName}`).toLowerCase(),
                "value": profile.stats.attributes[(`favorite_${req.body.slotName}`).toLowerCase()]
            });
        break;
    }

    if (ApplyProfileChanges.length > 0) {
        profile.rvn += 1;
        profile.commandRevision += 1;
        profile.updated = new Date().toISOString();

        await profiles.updateOne({ $set: { [`profiles.${req.query.profileId}`]: profile } });
    }

    if (QueryRevision != ProfileRevisionCheck) {
        ApplyProfileChanges = [{
            "changeType": "fullProfileUpdate",
            "profile": profile
        }];
    }

    res.json({
        profileRevision: profile.rvn || 0,
        profileId: req.query.profileId,
        profileChangesBaseRevision: BaseRevision,
        profileChanges: ApplyProfileChanges,
        profileCommandRevision: profile.commandRevision || 0,
        serverTime: new Date().toISOString(),
        responseVersion: 1
    });
});

app.post("/fortnite/api/game/v2/profile/*/client/SetCosmeticLockerBanner", verifyToken, async (req, res) => {
    const profiles = await Profile.findOne({ accountId: req.user.accountId });

    if (!await profileManager.validateProfile(req.query.profileId, profiles)) return error.createError(
        "errors.com.epicgames.modules.profiles.operation_forbidden",
        `Unable to find template configuration for profile ${req.query.profileId}`, 
        [req.query.profileId], 12813, undefined, 403, res
    );

    if (req.query.profileId != "athena") return error.createError(
        "errors.com.epicgames.modules.profiles.invalid_command",
        `SetCosmeticLockerBanner is not valid on ${req.query.profileId} profile`, 
        ["SetCosmeticLockerBanner",req.query.profileId], 12801, undefined, 400, res
    );

    let profile = profiles.profiles[req.query.profileId];

    const memory = functions.GetVersionInfo(req);

    if (req.query.profileId == "athena") profile.stats.attributes.season_num = memory.season;

    let ApplyProfileChanges = [];
    let BaseRevision = profile.rvn;
    let ProfileRevisionCheck = (memory.build >= 12.20) ? profile.commandRevision : profile.rvn;
    let QueryRevision = req.query.rvn || -1;

    let missingFields = checkFields(["bannerIconTemplateName","bannerColorTemplateName","lockerItem"], req.body);

    if (missingFields.fields.length > 0) return error.createError(
        "errors.com.epicgames.validation.validation_failed",
        `Validation Failed. [${missingFields.fields.join(", ")}] field(s) is missing.`,
        [`[${missingFields.fields.join(", ")}]`], 1040, undefined, 400, res
    );

    if (typeof req.body.lockerItem != "string") return ValidationError("lockerItem", "a string", res);
    if (typeof req.body.bannerIconTemplateName != "string") return ValidationError("bannerIconTemplateName", "a string", res);
    if (typeof req.body.bannerColorTemplateName != "string") return ValidationError("bannerColorTemplateName", "a string", res);

    if (!profile.items) profile.items = {};

    if (!profile.items[req.body.lockerItem]) return error.createError(
        "errors.com.epicgames.fortnite.id_invalid",
        `Item (id: '${req.body.lockerItem}') not found`, 
        [req.body.lockerItem], 16027, undefined, 400, res
    );

    if (profile.items[req.body.lockerItem].templateId.toLowerCase() != "cosmeticlocker:cosmeticlocker_athena") return error.createError(
        "errors.com.epicgames.fortnite.id_invalid",
        `lockerItem id is not a cosmeticlocker`, 
        ["lockerItem"], 16027, undefined, 400, res
    );

    let bannerProfileId = "common_core";

    let HomebaseBannerIconID = "";
    let HomebaseBannerColorID = "";

    if (!profiles.profiles[bannerProfileId].items) profiles.profiles[bannerProfileId].items = {};

    for (let itemId in profiles.profiles[bannerProfileId].items) {
        let templateId = profiles.profiles[bannerProfileId].items[itemId].templateId;

        if (templateId.toLowerCase() == `HomebaseBannerIcon:${req.body.bannerIconTemplateName}`.toLowerCase()) { HomebaseBannerIconID = itemId; continue; }
        if (templateId.toLowerCase() == `HomebaseBannerColor:${req.body.bannerColorTemplateName}`.toLowerCase()) { HomebaseBannerColorID = itemId; continue; }

        if (HomebaseBannerIconID && HomebaseBannerColorID) break;
    }

    if (!HomebaseBannerIconID) return error.createError(
        "errors.com.epicgames.fortnite.item_not_found",
        `Banner template 'HomebaseBannerIcon:${req.body.bannerIconTemplateName}' not found in profile`, 
        [`HomebaseBannerIcon:${req.body.bannerIconTemplateName}`], 16006, undefined, 400, res
    );

    if (!HomebaseBannerColorID) return error.createError(
        "errors.com.epicgames.fortnite.item_not_found",
        `Banner template 'HomebaseBannerColor:${req.body.bannerColorTemplateName}' not found in profile`, 
        [`HomebaseBannerColor:${req.body.bannerColorTemplateName}`], 16006, undefined, 400, res
    );

    profile.items[req.body.lockerItem].attributes.banner_icon_template = req.body.bannerIconTemplateName;
    profile.items[req.body.lockerItem].attributes.banner_color_template = req.body.bannerColorTemplateName;

    profile.stats.attributes.banner_icon = req.body.bannerIconTemplateName;
    profile.stats.attributes.banner_color = req.body.bannerColorTemplateName;

    ApplyProfileChanges.push({
        "changeType": "itemAttrChanged",
        "itemId": req.body.lockerItem,
        "attributeName": "banner_icon_template",
        "attributeValue": profile.items[req.body.lockerItem].attributes.banner_icon_template
    });

    ApplyProfileChanges.push({
        "changeType": "itemAttrChanged",
        "itemId": req.body.lockerItem,
        "attributeName": "banner_color_template",
        "attributeValue": profile.items[req.body.lockerItem].attributes.banner_color_template
    });

    if (ApplyProfileChanges.length > 0) {
        profile.rvn += 1;
        profile.commandRevision += 1;
        profile.updated = new Date().toISOString();

        await profiles.updateOne({ $set: { [`profiles.${req.query.profileId}`]: profile } });
    }

    if (QueryRevision != ProfileRevisionCheck) {
        ApplyProfileChanges = [{
            "changeType": "fullProfileUpdate",
            "profile": profile
        }];
    }

    res.json({
        profileRevision: profile.rvn || 0,
        profileId: req.query.profileId,
        profileChangesBaseRevision: BaseRevision,
        profileChanges: ApplyProfileChanges,
        profileCommandRevision: profile.commandRevision || 0,
        serverTime: new Date().toISOString(),
        responseVersion: 1
    });
});

app.post("/fortnite/api/game/v2/profile/*/client/SetCosmeticLockerSlot", verifyToken, async (req, res) => {
    const profiles = await Profile.findOne({ accountId: req.user.accountId });

    if (!await profileManager.validateProfile(req.query.profileId, profiles)) return error.createError(
        "errors.com.epicgames.modules.profiles.operation_forbidden",
        `Unable to find template configuration for profile ${req.query.profileId}`, 
        [req.query.profileId], 12813, undefined, 403, res
    );

    if (req.query.profileId != "athena") return error.createError(
        "errors.com.epicgames.modules.profiles.invalid_command",
        `SetCosmeticLockerSlot is not valid on ${req.query.profileId} profile`, 
        ["SetCosmeticLockerSlot",req.query.profileId], 12801, undefined, 400, res
    );

    let profile = profiles.profiles[req.query.profileId];

    const memory = functions.GetVersionInfo(req);

    if (req.query.profileId == "athena") profile.stats.attributes.season_num = memory.season;

    let ApplyProfileChanges = [];
    let BaseRevision = profile.rvn;
    let ProfileRevisionCheck = (memory.build >= 12.20) ? profile.commandRevision : profile.rvn;
    let QueryRevision = req.query.rvn || -1;
    let specialCosmetics = [
        "AthenaCharacter:cid_random",
        "AthenaBackpack:bid_random",
        "AthenaPickaxe:pickaxe_random",
        "AthenaGlider:glider_random",
        "AthenaSkyDiveContrail:trails_random",
        "AthenaItemWrap:wrap_random",
        "AthenaMusicPack:musicpack_random",
        "AthenaLoadingScreen:lsid_random"
    ];

    let missingFields = checkFields(["category","lockerItem"], req.body);

    if (missingFields.fields.length > 0) return error.createError(
        "errors.com.epicgames.validation.validation_failed",
        `Validation Failed. [${missingFields.fields.join(", ")}] field(s) is missing.`,
        [`[${missingFields.fields.join(", ")}]`], 1040, undefined, 400, res
    );

    if (typeof req.body.itemToSlot != "string") return ValidationError("itemToSlot", "a string", res);
    if (typeof req.body.slotIndex != "number") return ValidationError("slotIndex", "a number", res);
    if (typeof req.body.lockerItem != "string") return ValidationError("lockerItem", "a string", res);
    if (typeof req.body.category != "string") return ValidationError("category", "a string", res);

    if (!profile.items) profile.items = {};

    let itemToSlotID = "";

    if (req.body.itemToSlot) {
        for (let itemId in profile.items) {
            if (profile.items[itemId].templateId.toLowerCase() == req.body.itemToSlot.toLowerCase()) { itemToSlotID = itemId; break; };
        }
    }

    if (!profile.items[req.body.lockerItem]) return error.createError(
        "errors.com.epicgames.fortnite.id_invalid",
        `Item (id: '${req.body.lockerItem}') not found`, 
        [req.body.lockerItem], 16027, undefined, 400, res
    );

    if (profile.items[req.body.lockerItem].templateId.toLowerCase() != "cosmeticlocker:cosmeticlocker_athena") return error.createError(
        "errors.com.epicgames.fortnite.id_invalid",
        `lockerItem id is not a cosmeticlocker`, 
        ["lockerItem"], 16027, undefined, 400, res
    );

    if (!profile.items[itemToSlotID] && req.body.itemToSlot) {
        let item = req.body.itemToSlot;

        if (!specialCosmetics.includes(item)) {
            return error.createError(
                "errors.com.epicgames.fortnite.id_invalid",
                `Item (id: '${req.body.itemToSlot}') not found`, 
                [req.body.itemToSlot], 16027, undefined, 400, res
            );
        } else {
            if (!item.startsWith(`Athena${req.body.category}:`)) return error.createError(
                "errors.com.epicgames.fortnite.id_invalid",
                `Cannot slot item of type ${item.split(":")[0]} in slot of category ${req.body.category}`, 
                [item.split(":")[0],req.body.category], 16027, undefined, 400, res
            );
        }
    }

    if (profile.items[itemToSlotID]) {
        if (!profile.items[itemToSlotID].templateId.startsWith(`Athena${req.body.category}:`)) return error.createError(
            "errors.com.epicgames.fortnite.id_invalid",
            `Cannot slot item of type ${profile.items[itemToSlotID].templateId.split(":")[0]} in slot of category ${req.body.category}`, 
            [profile.items[itemToSlotID].templateId.split(":")[0],req.body.category], 16027, undefined, 400, res
        );

        let Variants = req.body.variantUpdates;

        if (Array.isArray(Variants)) {
            for (let i in Variants) {
                if (typeof Variants[i] != "object") continue;
                if (!Variants[i].channel) continue;
                if (!Variants[i].active) continue;

                let index = profile.items[itemToSlotID].attributes.variants.findIndex(x => x.channel == Variants[i].channel);

                if (index == -1) continue;
                if (!profile.items[itemToSlotID].attributes.variants[index].owned.includes(Variants[i].active)) continue;

                profile.items[itemToSlotID].attributes.variants[index].active = Variants[i].active;
            }

            ApplyProfileChanges.push({
                "changeType": "itemAttrChanged",
                "itemId": itemToSlotID,
                "attributeName": "variants",
                "attributeValue": profile.items[itemToSlotID].attributes.variants
            });
        }
    }
    
    switch (req.body.category) {
        case "Dance":
            if (!profile.items[req.body.lockerItem].attributes.locker_slots_data.slots[req.body.category]) break;

            if (req.body.slotIndex >= 0 && req.body.slotIndex <= 5) {
                profile.items[req.body.lockerItem].attributes.locker_slots_data.slots.Dance.items[req.body.slotIndex] = req.body.itemToSlot;
                profile.stats.attributes.favorite_dance[req.body.slotIndex] = itemToSlotID || req.body.itemToSlot;

                ApplyProfileChanges.push({
                    "changeType": "itemAttrChanged",
                    "itemId": req.body.lockerItem,
                    "attributeName": "locker_slots_data",
                    "attributeValue": profile.items[req.body.lockerItem].attributes.locker_slots_data
                });
            }
        break;

        case "ItemWrap":
            if (!profile.items[req.body.lockerItem].attributes.locker_slots_data.slots[req.body.category]) break;

            switch (true) {
                case req.body.slotIndex >= 0 && req.body.slotIndex <= 7:
                    profile.items[req.body.lockerItem].attributes.locker_slots_data.slots.ItemWrap.items[req.body.slotIndex] = req.body.itemToSlot;
                    profile.stats.attributes.favorite_itemwraps[req.body.slotIndex] = itemToSlotID || req.body.itemToSlot;

                    ApplyProfileChanges.push({
                        "changeType": "itemAttrChanged",
                        "itemId": req.body.lockerItem,
                        "attributeName": "locker_slots_data",
                        "attributeValue": profile.items[req.body.lockerItem].attributes.locker_slots_data
                    });
                break;

                case req.body.slotIndex == -1:
                    for (let i = 0; i < 7; i++) {
                        profile.items[req.body.lockerItem].attributes.locker_slots_data.slots.ItemWrap.items[i] = req.body.itemToSlot;
                        profile.stats.attributes.favorite_itemwraps[i] = itemToSlotID || req.body.itemToSlot;
                    }

                    ApplyProfileChanges.push({
                        "changeType": "itemAttrChanged",
                        "itemId": req.body.lockerItem,
                        "attributeName": "locker_slots_data",
                        "attributeValue": profile.items[req.body.lockerItem].attributes.locker_slots_data
                    });
                break;
            }
        break;

        default:
            if (!profile.items[req.body.lockerItem].attributes.locker_slots_data.slots[req.body.category]) break;

            if (req.body.category == "Pickaxe" || req.body.category == "Glider") {
                if (!req.body.itemToSlot) return error.createError(
                    "errors.com.epicgames.fortnite.id_invalid",
                    `${req.body.category} can not be empty.`, 
                    [req.body.category], 16027, undefined, 400, res
                );
            }

            profile.items[req.body.lockerItem].attributes.locker_slots_data.slots[req.body.category].items = [req.body.itemToSlot];
            profile.stats.attributes[(`favorite_${req.body.category}`).toLowerCase()] = itemToSlotID || req.body.itemToSlot;

            ApplyProfileChanges.push({
                "changeType": "itemAttrChanged",
                "itemId": req.body.lockerItem,
                "attributeName": "locker_slots_data",
                "attributeValue": profile.items[req.body.lockerItem].attributes.locker_slots_data
            });
        break;
    }

    if (ApplyProfileChanges.length > 0) {
        profile.rvn += 1;
        profile.commandRevision += 1;
        profile.updated = new Date().toISOString();

        await profiles.updateOne({ $set: { [`profiles.${req.query.profileId}`]: profile } });
    }

    if (QueryRevision != ProfileRevisionCheck) {
        ApplyProfileChanges = [{
            "changeType": "fullProfileUpdate",
            "profile": profile
        }];
    }

    res.json({
        profileRevision: profile.rvn || 0,
        profileId: req.query.profileId,
        profileChangesBaseRevision: BaseRevision,
        profileChanges: ApplyProfileChanges,
        profileCommandRevision: profile.commandRevision || 0,
        serverTime: new Date().toISOString(),
        responseVersion: 1
    });
});

app.post("/fortnite/api/game/v2/profile/*/client/:operation", verifyToken, async (req, res) => {
    const profiles = await Profile.findOne({ accountId: req.user.accountId });

    if (!await profileManager.validateProfile(req.query.profileId, profiles)) return error.createError(
        "errors.com.epicgames.modules.profiles.operation_forbidden",
        `Unable to find template configuration for profile ${req.query.profileId}`, 
        [req.query.profileId], 12813, undefined, 403, res
    );
    
    let profile = profiles.profiles[req.query.profileId];

    if (profile.rvn == profile.commandRevision) {
        profile.rvn += 1;

        if (req.query.profileId == "athena") {
            if (!profile.stats.attributes.last_applied_loadout) profile.stats.attributes.last_applied_loadout = profile.stats.attributes.loadouts[0];
        }

        await profiles.updateOne({ $set: { [`profiles.${req.query.profileId}`]: profile } });
    }

    const memory = functions.GetVersionInfo(req);

    if (req.query.profileId == "athena") profile.stats.attributes.season_num = memory.season;

    let MultiUpdate = [];

    if ((req.query.profileId == "common_core") && global.giftReceived[req.user.accountId]) {
        global.giftReceived[req.user.accountId] = false;

        let athena = profiles.profiles["athena"];

        MultiUpdate = [{
            "profileRevision": athena.rvn || 0,
            "profileId": "athena",
            "profileChangesBaseRevision": athena.rvn || 0,
            "profileChanges": [{
                "changeType": "fullProfileUpdate",
                "profile": athena
            }],
            "profileCommandRevision": athena.commandRevision || 0,
        }];
    }

    let ApplyProfileChanges = [];
    let BaseRevision = profile.rvn;
    let ProfileRevisionCheck = (memory.build >= 12.20) ? profile.commandRevision : profile.rvn;
    let QueryRevision = req.query.rvn || -1;

    switch (req.params.operation) {
        case "QueryProfile": break;
        case "ClientQuestLogin": break;
        case "RefreshExpeditions": break;
        case "GetMcpTimeForLogin": break;
        case "IncrementNamedCounterStat": break;
        case "SetHardcoreModifier": break;
        case "SetMtxPlatform": break;
        case "BulkEquipBattleRoyaleCustomization": break;

        default:
            error.createError(
                "errors.com.epicgames.fortnite.operation_not_found",
                `Operation ${req.params.operation} not valid`, 
                [req.params.operation], 16035, undefined, 404, res
            );
        return;
    }

    if (QueryRevision != ProfileRevisionCheck) {
        ApplyProfileChanges = [{
            "changeType": "fullProfileUpdate",
            "profile": profile
        }];
    }

    res.json({
        profileRevision: profile.rvn || 0,
        profileId: req.query.profileId,
        profileChangesBaseRevision: BaseRevision,
        profileChanges: ApplyProfileChanges,
        profileCommandRevision: profile.commandRevision || 0,
        serverTime: new Date().toISOString(),
        multiUpdate: MultiUpdate,
        responseVersion: 1
    });
});

app.post("/fortnite/api/game/v2/profile/:accountId/dedicated_server/:operation", async (req, res) => {
    const profiles = await Profile.findOne({ accountId: req.params.accountId }).lean();
    if (!profiles) return res.status(404).json({});

    if (!await profileManager.validateProfile(req.query.profileId, profiles)) return error.createError(
        "errors.com.epicgames.modules.profiles.operation_forbidden",
        `Unable to find template configuration for profile ${req.query.profileId}`, 
        [req.query.profileId], 12813, undefined, 403, res
    );
    
    let profile = profiles.profiles[req.query.profileId];

    let ApplyProfileChanges = [];
    let BaseRevision = profile.rvn;
    let QueryRevision = req.query.rvn || -1;

    if (QueryRevision != BaseRevision) {
        ApplyProfileChanges = [{
            "changeType": "fullProfileUpdate",
            "profile": profile
        }];
    }

    res.json({
        profileRevision: profile.rvn || 0,
        profileId: req.query.profileId,
        profileChangesBaseRevision: BaseRevision,
        profileChanges: ApplyProfileChanges,
        profileCommandRevision: profile.commandRevision || 0,
        serverTime: new Date().toISOString(),
        responseVersion: 1
    });
});

function checkFields(fields, body) {
    let missingFields = { fields: [] };

    fields.forEach(field => {
        if (!body[field]) missingFields.fields.push(field);
    });

    return missingFields;
}

function ValidationError(field, type, res) {
    return error.createError(
        "errors.com.epicgames.validation.validation_failed",
        `Validation Failed. '${field}' is not ${type}.`,
        [field], 1040, undefined, 400, res
    );
}

function checkIfDuplicateExists(arr) {
    return new Set(arr).size !== arr.length
}

module.exports = app;