feat(show parties): prepare to use ticket cart components

app/controllers/parties_controller.rb

@@ -9,4 +9,56 @@ class PartiesController < ApplicationController
   def show
     @party = Party.find(params[:id])
   end
+
+  # Handle checkout process
+  def checkout
+    @party = Party.find(params[:id])
+    cart_data = JSON.parse(params[:cart] || "{}")
+
+    if cart_data.empty?
+      redirect_to party_path(@party), alert: "Please select at least one ticket"
+      return
+    end
+
+    # Create order items from cart
+    order_items = []
+    total_amount = 0
+
+    cart_data.each do |ticket_type_id, item|
+      ticket_type = @party.ticket_types.find_by(id: ticket_type_id)
+      next unless ticket_type
+
+      quantity = item["quantity"].to_i
+      next if quantity <= 0
+
+      # Check availability
+      available = ticket_type.quantity - ticket_type.tickets.count
+      if quantity > available
+        redirect_to party_path(@party), alert: "Not enough tickets available for #{ticket_type.name}"
+        return
+      end
+
+      order_items << {
+        ticket_type: ticket_type,
+        quantity: quantity,
+        price_cents: ticket_type.price_cents
+      }
+
+      total_amount += ticket_type.price_cents * quantity
+    end
+
+    if order_items.empty?
+      redirect_to party_path(@party), alert: "Invalid order"
+      return
+    end
+
+    # Here you would typically:
+    # 1. Create an Order record
+    # 2. Create Ticket records for each item
+    # 3. Redirect to payment processing
+
+    # For now, we'll just redirect with a success message
+    # In a real app, you'd redirect to a payment page
+    redirect_to party_path(@party), notice: "Order created successfully! Proceeding to payment..."
+  end
 end