diff --git a/src/graphql/resolvers.ts b/src/graphql/resolvers.ts
index 513d060..2962352 100644
--- a/src/graphql/resolvers.ts
+++ b/src/graphql/resolvers.ts
@@ -33,20 +33,15 @@ export const resolvers = {
       }),
     getStatsRange: async (
       _parent: unknown,
-      data: { startDate: string; endDate: string }
+      data: { startDate: Date; endDate: Date }
       // _ctx: unknown
     ) => {
       const { startDate, endDate } = data;
-
-      if (startDate === "" || endDate === "") {
-        return null;
-      }
-
       return await prisma.dailyStats.findMany({
         where: {
           createdAt: {
-            gt: new Date(startDate),
-            lte: new Date(endDate)
+            gt: startDate,
+            lte: endDate
           }
         },
         orderBy: {
@@ -65,12 +60,21 @@ export const resolvers = {
       data: { groupID: number }
       // _ctx: unknown
     ) => {
-      const { groupID } = data;
-      return await prisma.groups.findUnique({
+      const groupIDInt = BigInt(data.groupID);
+
+      const group = await prisma.groups.findUnique({
         where: {
-          telegramID: groupID
+          telegramID: groupIDInt
         }
       });
+
+      if (group === null) {
+        const groups = await prisma.groups.findMany({
+          orderBy: { name: "asc" }
+        });
+      }
+
+      return group;
     }
   },
   Mutation: {
@@ -173,7 +177,7 @@ export const resolvers = {
     addGroup: async (
       _parent: unknown,
       data: {
-        groupID: number;
+        groupID: string;
         groupName: string;
         groupUsername: string;
         mutationKey?: string;
@@ -181,6 +185,7 @@ export const resolvers = {
       // _ctx: unknown
     ) => {
       const { groupID, groupName, groupUsername, mutationKey } = data;
+      const groupIDInt = BigInt(groupID);
 
       if (env !== "development") {
         if (!mutationKey) {
@@ -193,7 +198,7 @@ export const resolvers = {
       }
 
       const existingGroup = await prisma.groups.findUnique({
-        where: { telegramID: groupID }
+        where: { telegramID: groupIDInt }
       });
 
       if (existingGroup !== null) {
@@ -214,7 +219,7 @@ export const resolvers = {
 
       return await prisma.groups.create({
         data: {
-          telegramID: groupID,
+          telegramID: groupIDInt,
           name: groupName
         }
       });
@@ -225,6 +230,7 @@ export const resolvers = {
       // _ctx: unknown
     ) => {
       const { groupID, linksDeleted, mutationKey } = data;
+      const groupIDInt = BigInt(groupID);
 
       if (env !== "development") {
         if (!mutationKey) {
@@ -237,7 +243,7 @@ export const resolvers = {
       }
 
       return await prisma.groups.update({
-        where: { telegramID: groupID },
+        where: { telegramID: groupIDInt },
         data: { linksDeleted: { increment: linksDeleted } }
       });
     },
diff --git a/src/graphql/types.ts b/src/graphql/types.ts
index 039fcbf..0e44ebf 100644
--- a/src/graphql/types.ts
+++ b/src/graphql/types.ts
@@ -9,19 +9,19 @@ const typeDefs = /* GraphQL */ `
     getTodayStats: DailyStats!
     getStatsRange(startDate: String!, endDate: String!): [DailyStats]
     getTotalStats: TotalStats!
-    getGroupStats(groupID: BigInt!): Groups
+    getGroupStats(groupID: String!): Groups
   }
   type Mutation {
     init(mutationKey: String): String!
     cronJob(mutationKey: String): TotalStats!
     addGroup(
-      groupID: BigInt!
+      groupID: String!
       groupName: String!
       groupUsername: String
       mutationKey: String
     ): Groups!
     incrementGroup(
-      groupID: BigInt!
+      groupID: String!
       linksDeleted: Int!
       mutationKey: String
     ): Groups!
diff --git a/src/prisma/generated/internal/class.ts b/src/prisma/generated/internal/class.ts
index 4086a03..c1ebff0 100644
--- a/src/prisma/generated/internal/class.ts
+++ b/src/prisma/generated/internal/class.ts
@@ -23,7 +23,7 @@ const config: runtime.GetPrismaClientConfig = {
       "value": "prisma-client"
     },
     "output": {
-      "value": "/home/lucid/work/WKC/no-twitter-bot-stats/src/prisma/generated",
+      "value": "/home/lucid/work/cove-gitea/no-twitter-bot-stats/src/prisma/generated",
       "fromEnvVar": null
     },
     "config": {
@@ -37,7 +37,7 @@ const config: runtime.GetPrismaClientConfig = {
       }
     ],
     "previewFeatures": [],
-    "sourceFilePath": "/home/lucid/work/WKC/no-twitter-bot-stats/src/prisma/schema.prisma",
+    "sourceFilePath": "/home/lucid/work/cove-gitea/no-twitter-bot-stats/src/prisma/schema.prisma",
     "isCustomOutput": true
   },
   "relativePath": "..",