class MessagesController < ApplicationController
  before_action :set_message, only: %i[ show ]

  # GET /messages or /messages.json
  def index
    @search_term=""
    all_mail =  Message.select("messages.id,messages.message_id,messages.token,messages.mail_from,messages.rcpt_to,messages.subject,messages.timestamp,messages.last_delivery_attempt,messages.size,messages.status,deliveries.details").joins("INNER JOIN deliveries ON messages.id=deliveries.message_id")
    from = params[:mail_from] 
    to = params[:rcpt_to]
    if !params[:date_to].nil?
      date_to = Time.parse(params[:date_to]).to_i.to_s if !params[:date_to].empty?
      to_next_day = (Time.parse(params[:date_to]).to_i + 86400).to_s if !params[:date_to].empty? 
    end
    if !params[:date_to].nil?
      date_from = Time.parse(params[:date_from]).to_i.to_s if !params[:date_from].empty?
      from_next_day = (Time.parse(params[:date_from]).to_i + 86400).to_s if !params[:date_from].empty? 
    end
    status = params[:status]
    from ||= ''
    to ||= ''

    if !from.blank?
      @search_term << 'messages.mail_from="'+from+'"'
    end
    
    if !to.blank?
      if !@search_term.empty?
        @search_term << " AND "
      end
      @search_term << 'messages.rcpt_to="'+to+'"'
      puts "search term is #{@search_term}"
    end

    if !date_to.nil?
      if !@search_term.empty?
        @search_term << " AND "
      end
      if params[:date_from].nil? or params[:date_from].empty?
        @search_term << 'messages.timestamp>'+date_to+" AND messages.timestamp<"+ to_next_day
      else
        @search_term << 'messages.timestamp<='+date_to
      end
    end
    
    if !date_from.nil?
      if !@search_term.empty?
        @search_term << " AND "
      end
      if params[:date_to].nil? or params[:date_to].empty?
        @search_term << 'messages.timestamp>'+date_from+" AND messages.timestamp<"+ from_next_day
      else
        @search_term << 'messages.timestamp>='+date_from
      end
    end

    if params[:status].blank?
      params[:status] = 'All'
    end

    if params[:status] != "All" and @search_term.blank?
      @search_term << 'messages.status="'+params[:status]+'"'
    elsif status != "All" and !@search_term.blank?
      @search_term << ' AND messages.status="'+params[:status]+'"'
    end

    if @search_term.blank?
      mail = all_mail
    else
      mail = all_mail.where("#{@search_term}")
    end
    @@results  = mail
    @pagy, @messages = pagy(mail.order(id: :desc))
  end

  # GET /messages/1 or /messages/1.json
  def show
  end

  def export
    if File.file?("#{Rails.root}/mail_delivery_report.csv")
      File.delete("#{Rails.root}/mail_delivery_report.csv")
    end

    file = File.open("mail_delivery_report.csv", "a")
    file.write("ID|SENDER|RECIPIENT|SUBJECT|DATE|TIME|SIZE|STATUS|DELIVERY DETAILS\n")
    @@results.each do |mail|
      file.write("#{mail.id}|#{mail.mail_from}|#{mail.rcpt_to}|#{mail.subject}|#{Time.at(mail.timestamp).strftime('%d-%m-%Y')}|#{Time.at(mail.timestamp).strftime('%H:%M:%S')}|#{ mail.size.to_f >= 1048576 ? "#{(mail.size.to_d/1048576).round(2)} MB" : "#{(mail.size.to_d/1024).round(2)} KB" }|#{mail.status}|#{mail.details}\n")
    end
    file.close
    send_file("#{Rails.root}/mail_delivery_report.csv")
  end

  # POST /messages or /messages.json
  private
    # Use callbacks to share common setup or constraints between actions.
    def set_message
      @message = Message.find(params[:id])
    end

    # Only allow a list of trusted parameters through.
    def message_params
      params.require(:message).permit(:token, :scope, :rcpt_to, :mail_from, :subject, :message_id, :timestamp, :route_id, :domain_id, :credential_id, :status, :held, :size, :last_delivery_attempt, :raw_table, :raw_body_id, :raw_headers_id, :inspected, :spam, :spam_score, :threat, :threat_details, :bounce, :bounce_for_id, :tag, :loaded, :clicked, :received_with_ssl, :hold_expiry, :tracked_links, :tracked_images, :parsed, :endpoint_id, :endpoint_type)
    end
end