Investments System

[VisibleNasir]

📘 Overview

Allow users to invest in mutual funds (₹100+), digital gold (₹1+), and insurance premium payments.
This adds a high-margin revenue stream and attracts wealth-building users.

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💡 Why Add It

• Revenue Potential: Paytm sees 30% of users invest monthly, earning 0.5–2% affiliate commission.
• Retention: Wealth features increase stickiness (40%+ user return rate).
• Market Fit: India’s investment market is growing (₹10K/month avg per user).

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⚙️ Implementation

🧑‍💻 Userapp (Next.js)

• Page: /app/invest/page.tsx → Investment options dashboard.

• UI Components:

  • Tabs for Mutual Funds, Digital Gold, Insurance.
  • Input fields for investment amount.
  • Dropdowns for fund/gold/insurance selection.
  • Confirm button → Razorpay payment.
  • Styling consistent with repo (bg-zinc-800, text-zinc-100, border-zinc-700).

• API Routes:

  • GET /app/api/invest/funds → Fetch mutual fund options (via Groww/Zerodha/Kuvera API).
  • GET /app/api/invest/gold → Fetch gold prices (e.g., Augmont API).
  • GET /app/api/invest/insurance → Fetch insurance plans (Policybazaar or direct APIs).
  • POST /app/api/invest/purchase → Initiate investment via Razorpay.

• State Management:

  • useState → Selected investment type and amount.
  • TanStack Query → Fetch options & track status.

• Error Handling:

  • Show inline errors for invalid inputs (e.g., “Minimum ₹100”) → border-red-500, bg-zinc-700.
  • Disable buttons during API calls (disabled:bg-zinc-600/50).

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🌐 Webhook (Express)

• Endpoint: /webhook/investment

• Logic Flow:

  1. Receive Razorpay payment confirmation (payment.succeeded) or external provider confirmation.
  2. Update Investment table (SUCCESS, FAILED).
  3. Trigger notification via FCM/email → “₹500 invested in SBI Bluechip”.

• Security:

  • Validate webhook signatures (Razorpay/Groww/Augmont).
  • Log failed attempts for fraud monitoring.

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🗄️ Database (Prisma)

Add to schema.prisma:

model Investment {
  id        Int      @id @default(autoincrement())
  userId    Int
  type      String   // MUTUAL_FUND, GOLD, INSURANCE
  amount    Int      // in paise
  assetId   String   // fund ISIN, gold grams, insurance policy ID
  status    String   // PENDING, SUCCESS, FAILED
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
}