notify telegram webhook (#7)

packages/nextjs/.env.example

@@ -13,3 +13,11 @@ NEXT_PUBLIC_ALCHEMY_API_KEY=
 NEXT_PUBLIC_WALLET_CONNECT_PROJECT_ID=
 # will be used in production
 NEXT_PUBLIC_PONDER_URL=
+
+
+POSTGRES_URL="postgresql://postgres:mysecretpassword@localhost:5432/postgres"
+NEXTAUTH_URL=http://localhost:3000
+NEXTAUTH_SECRET=somereallysecretsecret
+
+TELEGRAM_BOT_URL=http://localhost:8080
+TELEGRAM_WEBHOOK_SECRET=your_secret_here

packages/nextjs/app/api/grants/new/route.ts

@@ -4,6 +4,7 @@ import { parseEther } from "viem";
 import { applyFormSchema } from "~~/app/apply/schema";
 import { GrantInsert, createGrant } from "~~/services/database/repositories/grants";
 import { createStage } from "~~/services/database/repositories/stages";
+import { notifyTelegramBot } from "~~/services/notifications/telegram";
 import { authOptions } from "~~/utils/auth";
 
 export type CreateNewGrantReqBody = Omit<GrantInsert, "requestedFunds" | "builderAddress"> & {
@@ -36,6 +37,12 @@ export async function POST(req: Request) {
       grantId: createdGrant.id,
     });
 
+    await notifyTelegramBot("grant", {
+      id: createdGrant.id,
+      ...body,
+      builderAddress,
+    });
+
     return NextResponse.json({ grantId: createdGrant.id, stageId: createdStage.id }, { status: 201 });
   } catch (error) {
     console.error(error);

packages/nextjs/app/api/stages/new/route.ts

@@ -6,6 +6,7 @@ import deployedContracts from "~~/contracts/deployedContracts";
 import scaffoldConfig from "~~/scaffold.config";
 import { getGrantById } from "~~/services/database/repositories/grants";
 import { StageInsert, createStage, updateStageStatusToCompleted } from "~~/services/database/repositories/stages";
+import { notifyTelegramBot } from "~~/services/notifications/telegram";
 import { authOptions } from "~~/utils/auth";
 import { EIP_712_DOMAIN, EIP_712_TYPES__APPLY_FOR_STAGE } from "~~/utils/eip712";
 import { getAlchemyHttpUrl } from "~~/utils/scaffold-eth";
@@ -93,6 +94,11 @@ export async function POST(req: Request) {
       stageNumber: latestStage.stageNumber + 1,
     });
 
+    await notifyTelegramBot("stage", {
+      newStage: body,
+      grant: grant,
+    });
+
     return NextResponse.json({ grantId: newStage.grantId, stageId: createdStage.id }, { status: 201 });
   } catch (error) {
     console.error(error);

packages/nextjs/services/notifications/telegram.ts

@@ -0,0 +1,49 @@
+import { CreateNewGrantReqBody } from "~~/app/api/grants/new/route";
+import { CreateNewStageReqBody } from "~~/app/api/stages/new/route";
+import { GrantWithStages } from "~~/app/grants/[grantId]/page";
+
+const TELEGRAM_BOT_URL = process.env.TELEGRAM_BOT_URL;
+const TELEGRAM_WEBHOOK_SECRET = process.env.TELEGRAM_WEBHOOK_SECRET;
+
+type StageData = {
+  newStage: CreateNewStageReqBody;
+  grant: GrantWithStages;
+};
+
+type GrantData = CreateNewGrantReqBody & { builderAddress: string };
+
+export async function notifyTelegramBot<T extends "grant" | "stage">(
+  endpoint: T,
+  data: T extends "grant" ? GrantData : StageData,
+) {
+  if (!TELEGRAM_BOT_URL || !TELEGRAM_WEBHOOK_SECRET) {
+    if (!TELEGRAM_BOT_URL) {
+      console.warn("TELEGRAM_BOT_URL is not set. Telegram notifications will be disabled.");
+    }
+
+    if (!TELEGRAM_WEBHOOK_SECRET) {
+      console.warn("TELEGRAM_WEBHOOK_SECRET is not set. Telegram notifications will be disabled.");
+    }
+    return;
+  }
+
+  try {
+    const response = await fetch(`${TELEGRAM_BOT_URL}/webhook/${endpoint}`, {
+      method: "POST",
+      headers: {
+        "Content-Type": "application/json",
+        "X-Webhook-Secret": TELEGRAM_WEBHOOK_SECRET,
+      },
+      body: JSON.stringify(data),
+    });
+
+    if (!response.ok) {
+      throw new Error(`HTTP error! status: ${response.status}`);
+    }
+
+    return response.json();
+  } catch (error) {
+    // We don't throw here to prevent the main flow from failing if notifications fail
+    console.error(`Error notifying Telegram bot (${endpoint}):`, error);
+  }
+}