The Investor Hat Store

Instructions

Implementation Reference

• main.py:307-350 (handler)

  The `get_quote` handler calculates the product price and shipping, generates a unique quote ID, stores the quote details, and returns the payment instructions in USDC on the Base network.

  async def get_quote(request: Request):
      body = await request.json()
      variant_id = body.get("variant_id")
      quantity = body.get("quantity", 1)
      address = body.get("shipping_address", {})
  
      # Get variant price from Shopify
      data = await shopify_get(f"variants/{variant_id}.json")
      variant = data["variant"]
      unit_price = float(variant["price"])
      subtotal = unit_price * quantity
  
      # Standard shipping estimate (US $5, international $15)
      country = address.get("country_code", "US")
      shipping = 5.0 if country == "US" else 15.0
      total_usdc = round(subtotal + shipping, 2)
  
      quote_id = make_quote_id(variant_id, quantity)
      _quotes[quote_id] = {
          "variant_id": variant_id,
          "quantity": quantity,
          "total_usdc": total_usdc,
          "shipping_address": address,
          "expires_at": time.time() + 600,  # 10 min
          "product_title": variant.get("title", ""),
      }
  
      return {
          "quote_id": quote_id,
          "product": variant.get("title", ""),
          "quantity": quantity,
          "subtotal_usdc": subtotal,
          "shipping_usdc": shipping,
          "total_usdc": total_usdc,
          "payment_wallet": PAYMENT_WALLET,
          "network": "base",
          "token": "USDC",
          "token_contract": USDC_CONTRACT,
          "instructions": (
              f"Send exactly {total_usdc} USDC on Base network to {PAYMENT_WALLET}, "
              f"then call place_order with the transaction hash and this quote_id."
          ),
          "expires_in": "10 minutes",
      }