refactor(events): replace parties concept with events throughout the application

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

This commit refactors the entire application to replace the 'parties' concept with 'events'. All controllers, models, views, and related files have been updated to reflect this change. The parties table has been replaced with an events table, and all related functionality has been updated accordingly.

app/controllers/events_controller.rb

@@ -0,0 +1,64 @@
+class EventsController < ApplicationController
+  # Display all events
+  def index
+    @events = Event.includes(:user).upcoming.page(params[:page]).per(1)
+    # @events = Event.page(params[:page]).per(12)
+  end
+
+  # Display desired event
+  def show
+    @event = Event.find(params[:id])
+  end
+
+  # Handle checkout process
+  def checkout
+    @event = Event.find(params[:id])
+    cart_data = JSON.parse(params[:cart] || "{}")
+
+    if cart_data.empty?
+      redirect_to event_path(@event), 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 = @event.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 event_path(@event), 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 event_path(@event), 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 event_path(@event), notice: "Order created successfully! Proceeding to payment..."
+  end
+end