# Legacy tickets controller - redirects to new order system
#
# This controller now primarily handles legacy redirects and backward compatibility
# Most ticket creation functionality has been moved to OrdersController
class TicketsController < ApplicationController
  before_action :authenticate_user!, only: [ :payment_success, :payment_cancel, :show, :ticket_view, :download_ticket ]
  before_action :set_event, only: [ :checkout, :retry_payment ]


  # Redirect to order-based checkout
  def checkout
    # Check for draft order
    if session[:draft_order_id].present?
      order = current_user.orders.find_by(id: session[:draft_order_id], status: "draft")
      if order.present?
        redirect_to order_checkout_path(order)
        return
      end
    end

    # No order found
    @event = Event.includes(:ticket_types).find(params[:id])
    redirect_to event_path(@event.slug, @event), alert: "Aucun billet en attente de paiement"
  end

  # Redirect to order-based payment success
  def payment_success
    redirect_to order_payment_success_path(session_id: params[:session_id])
  end

  # Redirect to order-based payment cancel
  def payment_cancel
    redirect_to order_payment_cancel_path
  end

  # Redirect retry payment to order system
  def retry_payment
    @event = Event.includes(:ticket_types).find(params[:id])

    # Look for draft order for this event
    order = current_user.orders.find_by(event: @event, status: "draft")

    if order&.can_retry_payment?
      redirect_to retry_payment_order_path(order)
    else
      redirect_to event_path(@event.slug, @event),
                 alert: "Aucune commande disponible pour un nouveau paiement"
    end
  end

  # Display ticket details
  def show
    @ticket = Ticket.joins(order: :user).includes(:event, :ticket_type, order: :user).find_by(
      tickets: { id: params[:ticket_id] },
      orders: { user_id: current_user.id }
    )
    @event = @ticket.event
  rescue ActiveRecord::RecordNotFound
    redirect_to dashboard_path, alert: "Billet non trouvé"
  end

  # Display ticket in PDF-like format
  def ticket_view
    @ticket = Ticket.joins(order: :user).includes(:event, :ticket_type, order: :user).find_by(
      tickets: { id: params[:ticket_id] },
      orders: { user_id: current_user.id }
    )

    if @ticket.nil?
      redirect_to dashboard_path, alert: "Billet non trouvé ou vous n'avez pas l'autorisation d'accéder à ce billet"
      return
    end

    @event = @ticket.event
  rescue ActiveRecord::RecordNotFound
    redirect_to dashboard_path, alert: "Billet non trouvé"
  end

  # Download PDF ticket - only accessible by ticket owner
  # User must be authenticated to download ticket
  # TODO: change ID to an unique identifier (UUID)
  def download_ticket
    # Find ticket and ensure it belongs to current user
    @ticket = Ticket.joins(order: :user).includes(:event, :ticket_type, order: :user).find_by(
      tickets: { id: params[:ticket_id] },
      orders: { user_id: current_user.id }
    )

    if @ticket.nil?
      redirect_to dashboard_path, alert: "Billet non trouvé ou vous n'avez pas l'autorisation d'accéder à ce billet"
      return
    end

    # Generate PDF using Grover
    begin
      Rails.logger.info "Starting PDF generation for ticket ID: #{@ticket.id}"
      
      # Render the HTML template  
      html = render_to_string(
        partial: "tickets/pdf_ticket",
        layout: false,
        locals: { ticket: @ticket }
      )
      
      Rails.logger.info "HTML template rendered successfully, length: #{html.length}"
      
      # Try to load and use Grover
      begin
        Rails.logger.info "Attempting to load Grover gem"
        
        # Try different approaches to load grover
        begin
          require 'bundler'
          Bundler.require(:default, Rails.env)
          Rails.logger.info "Bundler required gems successfully"
        rescue => bundler_error
          Rails.logger.warn "Bundler require failed: #{bundler_error.message}"
        end
        
        # Direct path approach using bundle show
        grover_gem_path = `bundle show grover`.strip
        grover_path = File.join(grover_gem_path, 'lib', 'grover')
        
        if File.exist?(grover_path + '.rb')
          Rails.logger.info "Loading Grover from direct path: #{grover_path}"
          require grover_path
        else
          Rails.logger.error "Grover not found at path: #{grover_path}"
          raise LoadError, "Grover gem not available at expected path"
        end
        
        Rails.logger.info "Creating Grover instance with options"
        grover = Grover.new(html, 
          format: 'A6',
          margin: {
            top: '10mm',
            bottom: '10mm',
            left: '10mm',
            right: '10mm'
          },
          prefer_css_page_size: true,
          emulate_media: 'print',
          cache: false,
          launch_args: ['--no-sandbox', '--disable-setuid-sandbox'] # For better compatibility
        )
        Rails.logger.info "Grover instance created successfully"
        
        pdf_content = grover.to_pdf
        Rails.logger.info "PDF generated successfully, length: #{pdf_content.length}"
        
        # Send PDF as download
        send_data pdf_content, 
                  filename: "ticket_#{@ticket.id}_#{@ticket.event.name.parameterize}.pdf",
                  type: "application/pdf",
                  disposition: "attachment"
      rescue LoadError => grover_error
        Rails.logger.error "Failed to load Grover: #{grover_error.message}"
        # Fallback: return HTML instead of PDF
        send_data html,
                  filename: "ticket_#{@ticket.id}_#{@ticket.event.name.parameterize}.html", 
                  type: "text/html",
                  disposition: "attachment"
      end
    rescue => e
      Rails.logger.error "Error generating ticket PDF with Grover:"
      Rails.logger.error "Message: #{e.message}"
      Rails.logger.error "Backtrace: #{e.backtrace.join("\n")}"
      redirect_to dashboard_path, alert: "Erreur lors de la génération du billet"
    end
  rescue ActiveRecord::RecordNotFound => e
    Rails.logger.error "ActiveRecord::RecordNotFound error: #{e.message}"
    redirect_to dashboard_path, alert: "Billet non trouvé"
  rescue => e
    Rails.logger.error "Unexpected error in download_ticket action:"
    Rails.logger.error "Message: #{e.message}"
    Rails.logger.error "Backtrace: #{e.backtrace.join("\n")}"
    redirect_to dashboard_path, alert: "Erreur lors de la génération du billet"
  end

  private

  def set_event
    event_id = params[:id] || session[:event_id]

    Rails.logger.debug "TicketsController#set_event - params[:id]: #{params[:id].inspect}, session[:event_id]: #{session[:event_id].inspect}"

    unless event_id
      Rails.logger.error "TicketsController#set_event - No event ID found"
      redirect_to events_path, alert: "Aucun événement spécifié"
      return
    end

    @event = Event.includes(:ticket_types).find(event_id)
    Rails.logger.debug "TicketsController#set_event - Found event: #{@event.id} - #{@event.name}"
  rescue ActiveRecord::RecordNotFound
    Rails.logger.error "TicketsController#set_event - Event not found with ID: #{event_id}"
    redirect_to events_path, alert: "Événement non trouvé"
  end
end