feat: initial vendor rotations

src/controllers/api/getVendorInfoController.ts

@@ -1,5 +1,5 @@
 import { RequestHandler } from "express";
-import { getVendorManifestByTypeName } from "@/src/services/serversideVendorsService";
+import { getVendorManifestByTypeName, preprocessVendorManifest } from "@/src/services/serversideVendorsService";
 
 export const getVendorInfoController: RequestHandler = (req, res) => {
     if (typeof req.query.vendor == "string") {
@@ -7,7 +7,7 @@ export const getVendorInfoController: RequestHandler = (req, res) => {
         if (!manifest) {
             throw new Error(`Unknown vendor: ${req.query.vendor}`);
         }
-        res.json(manifest);
+        res.json(preprocessVendorManifest(manifest));
     } else {
         res.status(400).end();
     }

src/services/leaderboardService.ts

@@ -15,8 +15,7 @@ export const submitLeaderboardScore = async (
         expiry = new Date(Math.trunc(Date.now() / 86400000) * 86400000 + 86400000);
     } else {
         const EPOCH = 1734307200 * 1000; // Monday
-        const day = Math.trunc((Date.now() - EPOCH) / 86400000);
-        const week = Math.trunc(day / 7);
+        const week = Math.trunc((Date.now() - EPOCH) / 604800000);
         const weekStart = EPOCH + week * 604800000;
         const weekEnd = weekStart + 604800000;
         expiry = new Date(weekEnd);

src/services/purchaseService.ts

@@ -9,7 +9,7 @@ import {
     updateSlots
 } from "@/src/services/inventoryService";
 import { getRandomWeightedRewardUc } from "@/src/services/rngService";
-import { getVendorManifestByOid } from "@/src/services/serversideVendorsService";
+import { getVendorManifestByOid, preprocessVendorManifest } from "@/src/services/serversideVendorsService";
 import { IMiscItem } from "@/src/types/inventoryTypes/inventoryTypes";
 import { IPurchaseRequest, IPurchaseResponse, SlotPurchase, IInventoryChanges } from "@/src/types/purchaseTypes";
 import { logger } from "@/src/utils/logger";
@@ -52,8 +52,9 @@ export const handlePurchase = async (
 
     const prePurchaseInventoryChanges: IInventoryChanges = {};
     if (purchaseRequest.PurchaseParams.Source == 7) {
-        const manifest = getVendorManifestByOid(purchaseRequest.PurchaseParams.SourceId!);
-        if (manifest) {
+        const rawManifest = getVendorManifestByOid(purchaseRequest.PurchaseParams.SourceId!);
+        if (rawManifest) {
+            const manifest = preprocessVendorManifest(rawManifest);
             let ItemId: string | undefined;
             if (purchaseRequest.PurchaseParams.ExtraPurchaseInfoJson) {
                 ItemId = (JSON.parse(purchaseRequest.PurchaseParams.ExtraPurchaseInfoJson) as { ItemId: string })
@@ -87,16 +88,28 @@ export const handlePurchase = async (
                             }) - 1
                         ];
                 }
+                let expiry = parseInt(offer.Expiry.$date.$numberLong);
+                if (purchaseRequest.PurchaseParams.IsWeekly) {
+                    const EPOCH = 1734307200 * 1000; // Monday
+                    const week = Math.trunc((Date.now() - EPOCH) / 604800000);
+                    const weekStart = EPOCH + week * 604800000;
+                    expiry = weekStart + 604800000;
+                }
                 const historyEntry = vendorPurchases.PurchaseHistory.find(x => x.ItemId == ItemId);
                 let numPurchased = purchaseRequest.PurchaseParams.Quantity;
                 if (historyEntry) {
-                    numPurchased += historyEntry.NumPurchased;
-                    historyEntry.NumPurchased += purchaseRequest.PurchaseParams.Quantity;
+                    if (Date.now() >= historyEntry.Expiry.getTime()) {
+                        historyEntry.NumPurchased = numPurchased;
+                        historyEntry.Expiry = new Date(expiry);
+                    } else {
+                        numPurchased += historyEntry.NumPurchased;
+                        historyEntry.NumPurchased += purchaseRequest.PurchaseParams.Quantity;
+                    }
                 } else {
                     vendorPurchases.PurchaseHistory.push({
                         ItemId: ItemId,
                         NumPurchased: purchaseRequest.PurchaseParams.Quantity,
-                        Expiry: new Date(parseInt(offer.Expiry.$date.$numberLong))
+                        Expiry: new Date(expiry)
                     });
                 }
                 prePurchaseInventoryChanges.NewVendorPurchase = {
@@ -105,7 +118,7 @@ export const handlePurchase = async (
                         {
                             ItemId: ItemId,
                             NumPurchased: numPurchased,
-                            Expiry: offer.Expiry
+                            Expiry: { $date: { $numberLong: expiry.toString() } }
                         }
                     ]
                 };

src/services/serversideVendorsService.ts

@@ -1,4 +1,6 @@
-import { IMongoDate, IOid } from "@/src/types/commonTypes";
+import { CRng, mixSeeds } from "@/src/services/rngService";
+import { IMongoDate } from "@/src/types/commonTypes";
+import { IVendorManifest, IVendorManifestPreprocessed } from "@/src/types/vendorTypes";
 
 import ArchimedeanVendorManifest from "@/static/fixed_responses/getVendorInfo/ArchimedeanVendorManifest.json";
 import DeimosEntratiFragmentVendorProductsManifest from "@/static/fixed_responses/getVendorInfo/DeimosEntratiFragmentVendorProductsManifest.json";
@@ -31,25 +33,6 @@ import SolarisProspectorVendorManifest from "@/static/fixed_responses/getVendorI
 import TeshinHardModeVendorManifest from "@/static/fixed_responses/getVendorInfo/TeshinHardModeVendorManifest.json";
 import ZarimanCommisionsManifestArchimedean from "@/static/fixed_responses/getVendorInfo/ZarimanCommisionsManifestArchimedean.json";
 
-interface IVendorManifest {
-    VendorInfo: {
-        _id: IOid;
-        TypeName: string;
-        ItemManifest: {
-            StoreItem: string;
-            ItemPrices?: { ItemType: string; ItemCount: number; ProductCategory: string }[];
-            Bin: string;
-            QuantityMultiplier: number;
-            Expiry: IMongoDate;
-            PurchaseQuantityLimit?: number;
-            RotatedWeekly?: boolean;
-            AllowMultipurchase: boolean;
-            Id: IOid;
-        }[];
-        Expiry: IMongoDate;
-    };
-}
-
 const vendorManifests: IVendorManifest[] = [
     ArchimedeanVendorManifest,
     DeimosEntratiFragmentVendorProductsManifest,
@@ -65,8 +48,8 @@ const vendorManifests: IVendorManifest[] = [
     DuviriAcrithisVendorManifest,
     EntratiLabsEntratiLabsCommisionsManifest,
     EntratiLabsEntratiLabVendorManifest,
-    GuildAdvertisementVendorManifest,
-    HubsIronwakeDondaVendorManifest,
+    GuildAdvertisementVendorManifest, // uses preprocessing
+    HubsIronwakeDondaVendorManifest, // uses preprocessing
     HubsPerrinSequenceWeaponVendorManifest,
     HubsRailjackCrewMemberVendorManifest,
     MaskSalesmanManifest,
@@ -79,7 +62,7 @@ const vendorManifests: IVendorManifest[] = [
     SolarisDebtTokenVendorRepossessionsManifest,
     SolarisFishmongerVendorManifest,
     SolarisProspectorVendorManifest,
-    TeshinHardModeVendorManifest,
+    TeshinHardModeVendorManifest, // uses preprocessing
     ZarimanCommisionsManifestArchimedean
 ];
 
@@ -100,3 +83,38 @@ export const getVendorManifestByOid = (oid: string): IVendorManifest | undefined
     }
     return undefined;
 };
+
+export const preprocessVendorManifest = (originalManifest: IVendorManifest): IVendorManifestPreprocessed => {
+    if (Date.now() >= parseInt(originalManifest.VendorInfo.Expiry.$date.$numberLong)) {
+        const manifest = structuredClone(originalManifest);
+        const info = manifest.VendorInfo;
+        refreshExpiry(info.Expiry);
+        for (const offer of info.ItemManifest) {
+            const iteration = refreshExpiry(offer.Expiry);
+            if (offer.ItemPrices) {
+                for (const price of offer.ItemPrices) {
+                    if (typeof price.ItemType != "string") {
+                        const itemSeed = parseInt(offer.Id.$oid.substring(16), 16);
+                        const rng = new CRng(mixSeeds(itemSeed, iteration));
+                        price.ItemType = rng.randomElement(price.ItemType);
+                    }
+                }
+            }
+        }
+        return manifest as IVendorManifestPreprocessed;
+    }
+    return originalManifest as IVendorManifestPreprocessed;
+};
+
+const refreshExpiry = (expiry: IMongoDate): number => {
+    const period = parseInt(expiry.$date.$numberLong);
+    if (Date.now() >= period) {
+        const epoch = 1734307200 * 1000; // Monday (for weekly schedules)
+        const iteration = Math.trunc((Date.now() - epoch) / period);
+        const start = epoch + iteration * period;
+        const end = start + period;
+        expiry.$date.$numberLong = end.toString();
+        return iteration;
+    }
+    return 0;
+};

src/types/vendorTypes.ts

@@ -0,0 +1,46 @@
+import { IMongoDate, IOid } from "./commonTypes";
+
+interface IItemPrice {
+    ItemType: string | string[]; // If string[], preprocessing will use RNG to pick one for the current period.
+    ItemCount: number;
+    ProductCategory: string;
+}
+
+interface IItemPricePreprocessed extends Omit<IItemPrice, "ItemType"> {
+    ItemType: string;
+}
+
+interface IItemManifest {
+    StoreItem: string;
+    ItemPrices?: IItemPrice[];
+    Bin: string;
+    QuantityMultiplier: number;
+    Expiry: IMongoDate; // Either a date in the distant future or a period in milliseconds for preprocessing.
+    PurchaseQuantityLimit?: number;
+    RotatedWeekly?: boolean;
+    AllowMultipurchase: boolean;
+    Id: IOid;
+}
+
+interface IItemManifestPreprocessed extends Omit<IItemManifest, "ItemPrices"> {
+    ItemPrices?: IItemPricePreprocessed[];
+}
+
+interface IVendorInfo {
+    _id: IOid;
+    TypeName: string;
+    ItemManifest: IItemManifest[];
+    Expiry: IMongoDate; // Either a date in the distant future or a period in milliseconds for preprocessing.
+}
+
+interface IVendorInfoPreprocessed extends Omit<IVendorInfo, "ItemManifest"> {
+    ItemManifest: IItemManifestPreprocessed[];
+}
+
+export interface IVendorManifest {
+    VendorInfo: IVendorInfo;
+}
+
+export interface IVendorManifestPreprocessed {
+    VendorInfo: IVendorInfoPreprocessed;
+}

static/fixed_responses/getVendorInfo/GuildAdvertisementVendorManifest.json

@@ -5,11 +5,17 @@
     "ItemManifest": [
       {
         "StoreItem": "/Lotus/StoreItems/Types/Items/Guild/GuildAdvertisementMoon",
-        "ItemPrices": [{ "ItemType": "/Lotus/Types/Items/Research/ChemComponent", "ItemCount": 12, "ProductCategory": "MiscItems" }],
+        "ItemPrices": [
+          {
+            "ItemType": ["/Lotus/Types/Items/Research/BioFragment", "/Lotus/Types/Items/Research/ChemComponent", "/Lotus/Types/Items/Research/EnergyFragment"],
+            "ItemCount": 12,
+            "ProductCategory": "MiscItems"
+          }
+        ],
         "RegularPrice": [1, 1],
         "Bin": "BIN_4",
         "QuantityMultiplier": 1,
-        "Expiry": { "$date": { "$numberLong": "9999999000000" } },
+        "Expiry": { "$date": { "$numberLong": "604800000" } },
         "PurchaseQuantityLimit": 1,
         "AllowMultipurchase": false,
         "LocTagRandSeed": 79554843,
@@ -17,11 +23,17 @@
       },
       {
         "StoreItem": "/Lotus/StoreItems/Types/Items/Guild/GuildAdvertisementMountain",
-        "ItemPrices": [{ "ItemType": "/Lotus/Types/Items/Research/ChemComponent", "ItemCount": 7, "ProductCategory": "MiscItems" }],
+        "ItemPrices": [
+          {
+            "ItemType": ["/Lotus/Types/Items/Research/BioFragment", "/Lotus/Types/Items/Research/ChemComponent", "/Lotus/Types/Items/Research/EnergyFragment"],
+            "ItemCount": 7,
+            "ProductCategory": "MiscItems"
+          }
+        ],
         "RegularPrice": [1, 1],
         "Bin": "BIN_3",
         "QuantityMultiplier": 1,
-        "Expiry": { "$date": { "$numberLong": "9999999000000" } },
+        "Expiry": { "$date": { "$numberLong": "604800000" } },
         "PurchaseQuantityLimit": 1,
         "AllowMultipurchase": false,
         "LocTagRandSeed": 2413820225,
@@ -29,11 +41,17 @@
       },
       {
         "StoreItem": "/Lotus/StoreItems/Types/Items/Guild/GuildAdvertisementStorm",
-        "ItemPrices": [{ "ItemType": "/Lotus/Types/Items/Research/ChemComponent", "ItemCount": 3, "ProductCategory": "MiscItems" }],
+        "ItemPrices": [
+          {
+            "ItemType": ["/Lotus/Types/Items/Research/BioFragment", "/Lotus/Types/Items/Research/ChemComponent", "/Lotus/Types/Items/Research/EnergyFragment"],
+            "ItemCount": 3,
+            "ProductCategory": "MiscItems"
+          }
+        ],
         "RegularPrice": [1, 1],
         "Bin": "BIN_2",
         "QuantityMultiplier": 1,
-        "Expiry": { "$date": { "$numberLong": "9999999000000" } },
+        "Expiry": { "$date": { "$numberLong": "604800000" } },
         "PurchaseQuantityLimit": 1,
         "AllowMultipurchase": false,
         "LocTagRandSeed": 3262300883,
@@ -41,11 +59,17 @@
       },
       {
         "StoreItem": "/Lotus/StoreItems/Types/Items/Guild/GuildAdvertisementShadow",
-        "ItemPrices": [{ "ItemType": "/Lotus/Types/Items/Research/EnergyFragment", "ItemCount": 20, "ProductCategory": "MiscItems" }],
+        "ItemPrices": [
+          {
+            "ItemType": ["/Lotus/Types/Items/Research/BioFragment", "/Lotus/Types/Items/Research/ChemComponent", "/Lotus/Types/Items/Research/EnergyFragment"],
+            "ItemCount": 20,
+            "ProductCategory": "MiscItems"
+          }
+        ],
         "RegularPrice": [1, 1],
         "Bin": "BIN_1",
         "QuantityMultiplier": 1,
-        "Expiry": { "$date": { "$numberLong": "9999999000000" } },
+        "Expiry": { "$date": { "$numberLong": "604800000" } },
         "PurchaseQuantityLimit": 1,
         "AllowMultipurchase": false,
         "LocTagRandSeed": 2797325750,
@@ -53,11 +77,17 @@
       },
       {
         "StoreItem": "/Lotus/StoreItems/Types/Items/Guild/GuildAdvertisementGhost",
-        "ItemPrices": [{ "ItemType": "/Lotus/Types/Items/Research/EnergyFragment", "ItemCount": 10, "ProductCategory": "MiscItems" }],
+        "ItemPrices": [
+          {
+            "ItemType": ["/Lotus/Types/Items/Research/BioFragment", "/Lotus/Types/Items/Research/ChemComponent", "/Lotus/Types/Items/Research/EnergyFragment"],
+            "ItemCount": 10,
+            "ProductCategory": "MiscItems"
+          }
+        ],
         "RegularPrice": [1, 1],
         "Bin": "BIN_0",
         "QuantityMultiplier": 1,
-        "Expiry": { "$date": { "$numberLong": "9999999000000" } },
+        "Expiry": { "$date": { "$numberLong": "604800000" } },
         "PurchaseQuantityLimit": 1,
         "AllowMultipurchase": false,
         "LocTagRandSeed": 554932310,
@@ -66,6 +96,6 @@
     ],
     "PropertyTextHash": "255AFE2169BAE4130B4B20D7C55D14FA",
     "RandomSeedType": "VRST_FLAVOUR_TEXT",
-    "Expiry": { "$date": { "$numberLong": "9999999000000" } }
+    "Expiry": { "$date": { "$numberLong": "604800000" } }
   }
 }

static/fixed_responses/getVendorInfo/HubsIronwakeDondaVendorManifest.json

@@ -18,7 +18,7 @@
         "QuantityMultiplier": 1,
         "Expiry": {
           "$date": {
-            "$numberLong": "9999999000000"
+            "$numberLong": "604800000"
           }
         },
         "AllowMultipurchase": true,
@@ -39,7 +39,7 @@
         "QuantityMultiplier": 1,
         "Expiry": {
           "$date": {
-            "$numberLong": "9999999000000"
+            "$numberLong": "604800000"
           }
         },
         "PurchaseQuantityLimit": 1,
@@ -61,7 +61,7 @@
         "QuantityMultiplier": 1,
         "Expiry": {
           "$date": {
-            "$numberLong": "9999999000000"
+            "$numberLong": "604800000"
           }
         },
         "PurchaseQuantityLimit": 1,
@@ -83,7 +83,7 @@
         "QuantityMultiplier": 35000,
         "Expiry": {
           "$date": {
-            "$numberLong": "9999999000000"
+            "$numberLong": "604800000"
           }
         },
         "PurchaseQuantityLimit": 1,
@@ -105,7 +105,7 @@
         "QuantityMultiplier": 1,
         "Expiry": {
           "$date": {
-            "$numberLong": "9999999000000"
+            "$numberLong": "604800000"
           }
         },
         "PurchaseQuantityLimit": 1,
@@ -118,7 +118,7 @@
     "PropertyTextHash": "62B64A8065B7C0FA345895D4BC234621",
     "Expiry": {
       "$date": {
-        "$numberLong": "9999999000000"
+        "$numberLong": "604800000"
       }
     }
   }

static/fixed_responses/getVendorInfo/TeshinHardModeVendorManifest.json

@@ -561,7 +561,7 @@
         "QuantityMultiplier": 1,
         "Expiry": {
           "$date": {
-            "$numberLong": "2051240400000"
+            "$numberLong": "604800000"
           }
         },
         "PurchaseQuantityLimit": 25,
@@ -583,7 +583,7 @@
         "QuantityMultiplier": 10000,
         "Expiry": {
           "$date": {
-            "$numberLong": "2051240400000"
+            "$numberLong": "604800000"
           }
         },
         "PurchaseQuantityLimit": 25,
@@ -596,7 +596,7 @@
     "PropertyTextHash": "0A0F20AFA748FBEE490510DBF5A33A0D",
     "Expiry": {
       "$date": {
-        "$numberLong": "2051240400000"
+        "$numberLong": "604800000"
       }
     }
   }