initial commit (#678)

Author: KannuSingh

advanced/dapps/dca-dapp-demo/.gitignore

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+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+.yarn/install-state.gz
+
+# testing
+/coverage
+
+# next.js
+/.next/
+/out/
+
+# production
+/build
+
+# misc
+.DS_Store
+*.pem
+
+# debug
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# local env files
+.env*.local
+
+# vercel
+.vercel
+
+# typescript
+*.tsbuildinfo
+next-env.d.ts

advanced/dapps/dca-dapp-demo/README.md

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+This is a [Next.js](https://nextjs.org/) project bootstrapped with [`create-next-app`](https://github.com/vercel/next.js/tree/canary/packages/create-next-app).
+
+## Getting Started
+
+First, run the development server:
+
+```bash
+npm run dev
+# or
+yarn dev
+# or
+pnpm dev
+# or
+bun dev
+```
+
+Open [http://localhost:3000](http://localhost:3000) with your browser to see the result.
+
+You can start editing the page by modifying `app/page.tsx`. The page auto-updates as you edit the file.
+
+This project uses [`next/font`](https://nextjs.org/docs/basic-features/font-optimization) to automatically optimize and load Inter, a custom Google Font.
+
+## Learn More
+
+To learn more about Next.js, take a look at the following resources:
+
+- [Next.js Documentation](https://nextjs.org/docs) - learn about Next.js features and API.
+- [Learn Next.js](https://nextjs.org/learn) - an interactive Next.js tutorial.
+
+You can check out [the Next.js GitHub repository](https://github.com/vercel/next.js/) - your feedback and contributions are welcome!
+
+## Deploy on Vercel
+
+The easiest way to deploy your Next.js app is to use the [Vercel Platform](https://vercel.com/new?utm_medium=default-template&filter=next.js&utm_source=create-next-app&utm_campaign=create-next-app-readme) from the creators of Next.js.
+
+Check out our [Next.js deployment documentation](https://nextjs.org/docs/deployment) for more details.

advanced/dapps/dca-dapp-demo/components.json

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+{
+  "$schema": "https://ui.shadcn.com/schema.json",
+  "style": "default",
+  "rsc": true,
+  "tsx": true,
+  "tailwind": {
+    "config": "tailwind.config.ts",
+    "css": "src/app/globals.css",
+    "baseColor": "slate",
+    "cssVariables": true,
+    "prefix": ""
+  },
+  "aliases": {
+    "components": "@/components",
+    "utils": "@/lib/utils"
+  }
+}

advanced/dapps/dca-dapp-demo/eslint.config.mjs

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+import globals from "globals";
+import pluginJs from "@eslint/js";
+import tseslint from "typescript-eslint";
+import pluginReact from "eslint-plugin-react";
+
+
+export default [
+  {files: ["**/*.{js,mjs,cjs,ts,jsx,tsx}"]},
+  {languageOptions: { globals: globals.browser }},
+  pluginJs.configs.recommended,
+  ...tseslint.configs.recommended,
+  pluginReact.configs.flat.recommended,
+];

advanced/dapps/dca-dapp-demo/next.config.mjs

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+/** @type {import('next').NextConfig} */
+const nextConfig = {};
+
+export default nextConfig;

advanced/dapps/dca-dapp-demo/package.json

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+{
+  "name": "dca-dapp-demo",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "dev": "next dev",
+    "build": "next build",
+    "start": "next start",
+    "lint": "next lint",
+    "format": "prettier --write \"**/*.{js,jsx,ts,tsx,json,css,md}\""
+  },
+  "dependencies": {
+    "@hookform/resolvers": "^3.9.0",
+    "@radix-ui/react-label": "^2.1.0",
+    "@radix-ui/react-progress": "^1.1.0",
+    "@radix-ui/react-select": "^2.1.1",
+    "@radix-ui/react-slot": "^1.1.0",
+    "@radix-ui/react-tabs": "^1.1.0",
+    "@radix-ui/react-toast": "^1.2.1",
+    "@shadcn/ui": "^0.0.4",
+    "@tanstack/react-query": "5.24.8",
+    "@wagmi/connectors": "5.1.2",
+    "@wagmi/core": "2.13.1",
+    "@walletconnect/ethereum-provider": "2.14.0",
+    "@walletconnect/utils": "2.14.0",
+    "@web3modal/wagmi": "5.1.0",
+    "@web3modal/wallet": "5.1.0",
+    "autoprefixer": "10.4.18",
+    "axios": "1.7.2",
+    "bs58": "^6.0.0",
+    "class-variance-authority": "^0.7.0",
+    "clsx": "2.1.0",
+    "lucide-react": "^0.427.0",
+    "next": "14.2.5",
+    "next-themes": "^0.3.0",
+    "permissionless": "0.1.31",
+    "pino-pretty": "^11.2.2",
+    "react": "^18",
+    "react-dom": "^18",
+    "react-hook-form": "^7.52.2",
+    "sonner": "1.4.3",
+    "tailwind-merge": "2.2.1",
+    "tailwindcss-animate": "^1.0.7",
+    "vaul": "0.9.0",
+    "viem": "2.17.8",
+    "wagmi": "2.12.2",
+    "zod": "3.22.4"
+  },
+  "devDependencies": {
+    "@eslint/js": "^9.9.0",
+    "@types/node": "^20",
+    "@types/react": "^18",
+    "@types/react-dom": "^18",
+    "eslint": "^9.9.0",
+    "eslint-config-next": "14.2.5",
+    "eslint-config-prettier": "^9.1.0",
+    "eslint-plugin-prettier": "^5.2.1",
+    "eslint-plugin-react": "^7.35.0",
+    "globals": "^15.9.0",
+    "postcss": "^8",
+    "prettier": "^3.3.3",
+    "tailwindcss": "^3.4.1",
+    "typescript": "^5",
+    "typescript-eslint": "^8.2.0"
+  }
+}

advanced/dapps/dca-dapp-demo/postcss.config.mjs

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+/** @type {import('postcss-load-config').Config} */
+const config = {
+  plugins: {
+    tailwindcss: {},
+  },
+};
+
+export default config;

advanced/dapps/dca-dapp-demo/public/next.svg

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+import {
+  abi as donutContractAbi,
+  address as donutContractAddress,
+} from "@/utils/DonutContract";
+import { executeActionsWithECDSAAndCosignerPermissions } from "@/utils/ERC7715PermissionsAsyncUtils";
+import { CoSignerApiError } from "@/utils/WalletConnectCosigner";
+import { NextResponse } from "next/server";
+import { encodeFunctionData, parseEther } from "viem";
+import { GrantPermissionsReturnType } from "viem/experimental";
+import { sepolia } from "viem/chains";
+import { DCAFormSchemaType } from "@/schema/DCAFormSchema";
+
+export async function POST(request: Request) {
+  const {
+    strategy,
+    permissions,
+    pci,
+  }: {
+    strategy: DCAFormSchemaType;
+    permissions: GrantPermissionsReturnType;
+    pci: string;
+  } = await request.json();
+  const APPLICATION_PRIVATE_KEY = process.env
+    .NEXT_PUBLIC_APPLICATION_PRIVATE_KEY as `0x${string}`;
+
+  try {
+    if (!APPLICATION_PRIVATE_KEY) {
+      return NextResponse.json(
+        { message: "No application signer" },
+        { status: 400 },
+      );
+    }
+    if (!strategy) {
+      return NextResponse.json(
+        { message: "No strategy provider" },
+        { status: 400 },
+      );
+    }
+    if (!permissions) {
+      return NextResponse.json(
+        { message: "No permissions provider" },
+        { status: 400 },
+      );
+    }
+    if (!pci) {
+      return NextResponse.json({ message: "No pci provider" }, { status: 400 });
+    }
+
+    const purchaseDonutCallData = encodeFunctionData({
+      abi: donutContractAbi,
+      functionName: "purchase",
+      args: [1],
+    });
+    const purchaseDonutCallDataExecution = [
+      {
+        target: donutContractAddress as `0x${string}`,
+        value: parseEther("0.0001"),
+        callData: purchaseDonutCallData,
+      },
+    ];
+    executeActionsWithECDSAAndCosignerPermissions({
+      ecdsaPrivateKey: APPLICATION_PRIVATE_KEY,
+      pci,
+      permissions,
+      chain: sepolia,
+      actions: purchaseDonutCallDataExecution,
+    });
+
+    return NextResponse.json(
+      { message: "Asset sucessfully purchased." },
+      { status: 200 },
+    );
+  } catch (e) {
+    console.log("Error interacting with contract:", e);
+    let errorMessage = "Error making move";
+    if (e instanceof CoSignerApiError) {
+      errorMessage = e.message;
+    } else if (typeof e === "string") {
+      errorMessage = e;
+    } else {
+      try {
+        errorMessage = JSON.stringify(e, null, 2);
+      } catch {
+        errorMessage = Object.prototype.toString.call(e);
+      }
+    }
+    console.log("Error message:", errorMessage);
+
+    return NextResponse.json(
+      { message: errorMessage, error: errorMessage },
+      { status: 500 },
+    );
+  }
+}