sub cmd_previlege
{
        my $matchprompt = $session->last_prompt;
        print "prmot $matchprompt\n";
        @outputforlog = $session->cmd(String => 'show ip ospf neighbor det | in Neighbor | in up', Prompt => '/\#2#/');
        print "Out for log @outputforlog\n";

        #$session->waitfor('/\#2#/');
        @output1 = $session->cmd(String => 'show ip ospf neighbor det | in Neighbor is up for', Prompt => '/\#2#/');
        print "output1 is @output1\n";
        @output3 = $session->cmd(String => 'show version | inc uptime', Prompt => '/\#2#/');
        print "OUtput 3 is @output2\n";
        @output4 = $session->cmd(String => 'show process cpu | inc %/', Prompt => '/\#2#/');
        print "out 4 is @output4\n";
        @output5 = $session->cmd(String => 'show env', Prompt => '/\#2#/');
        print "out 5 is @output5\n";
        @output6 = $session->cmd(String => 'show memory free | incl Processor | exclude Allocator', Prompt => '/\#2#/');
        print "out 6 is @output6\n";

        ### Creating log file of complete output for reference in future
        open $logfile1, ">log_for_$ip.log" or die "Could not open file log_for_$ip.log";
        foreach(@outputforlog)
        {
                print $logfile1 $_;
        }
        print $logfile1 "\n--------------------------------------------------------------------\n";
        close $logfile1;

        open $logfile3, ">>log_for_$ip.log" or die "Could not open file log_for_$ip.log";
        foreach(@output3)
        {
                        print $logfile3 $_;
        }
        print $logfile3 "--------------------------------------------------------------------\n";
        close $logfile3;

        open $logfile4, ">>log_for_$ip.log" or die "Could not open file log_for_$ip.log";
        foreach(@output4)
        {
                print $logfile4 $_;
        }
        print $logfile4 "--------------------------------------------------------------------\n";
        close $logfile4;

        open $logfile5, ">>log_for_$ip.log" or die "Could not open file log_for_$ip.log";
        foreach(@output5)
        {
                print $logfile5 $_;
        }
        print $logfile5 "--------------------------------------------------------------------\n";
        close $logfile5;

        open $logfile6, ">>log_for_$ip.log" or die "Could not open file log_for_$ip.log";
        foreach(@output6)
        {
                print $logfile6 $_;
        }
        close $logfile6;
        ospf();
        device_uptime();
        env_alarm();
        process_cpu();
        memory_cal();
        excel();
}

sub cmd_normal
{
        @outputforlog = $session->cmd('show ip ospf neighbor det | in Neighbor | in up');
        #$session->waitfor('/\#/');
        @output1 = $session->cmd('show ip ospf neighbor det | in Neighbor is up for');
        @output2 = $session->cmd('show ip bgp summary | begin Neighbor');
        @output3 = $session->cmd('show version | inc uptime');
        @output4 = $session->cmd('show process cpu | inc %/');
        @output5 = $session->cmd('show env');
        @output6 = $session->cmd('show memory free | incl Processor | exclude Allocator');

        ### Creating log file of complete output for reference in future
        open $logfile1, ">log_for_$ip.log" or die "Could not open file log_for_$ip.log";
        foreach(@outputforlog)
        {
                print $logfile1 $_;
        }
        print $logfile1 "\n--------------------------------------------------------------------\n";
        close $logfile1;

        open $logfile2, ">>log_for_$ip.log" or die "Could not open file log_for_$ip.log";
        foreach(@output2)
        {
                print $logfile2 $_;
        }
        print $logfile2 "--------------------------------------------------------------------\n";
        close $logfile2;

        open $logfile3, ">>log_for_$ip.log" or die "Could not open file log_for_$ip.log";
        foreach(@output3)
        {
                print $logfile3 $_;
        }
        print $logfile3 "--------------------------------------------------------------------\n";
        close $logfile3;

        open $logfile4, ">>log_for_$ip.log" or die "Could not open file log_for_$ip.log";
        foreach(@output4)
        {
                print $logfile4 $_;
        }
        print $logfile4 "--------------------------------------------------------------------\n";
        close $logfile4;

        open $logfile5, ">>log_for_$ip.log" or die "Could not open file log_for_$ip.log";
        foreach(@output5)
        {
                print $logfile5 $_;
        }
        print $logfile5 "--------------------------------------------------------------------\n";
        close $logfile5;

        open $logfile6, ">>log_for_$ip.log" or die "Could not open file log_for_$ip.log";
        foreach(@output6)
        {
                print $logfile6 $_;
        }
        close $logfile6;
        ospf();
        bgp();
        device_uptime();
        env_alarm();
        process_cpu();
        memory_cal();
        excel();
}

sub excel
{
        $count = $count + 1;
        my $sheet = "sheet".$count;
        my $outfile = "Checklist_$ip.xls";
        my $workbook1  = Spreadsheet::WriteExcel->new($outfile);
        $sheet = $workbook1->add_worksheet($ip);
        $sheet->activate();
        # Set the column width for columns 1 to 7
        $sheet->set_column(0, 7, 20);
        # Increased the cell size of the merged cells to highlight the formatting.
        $sheet->set_column('B:G', 30);
        $sheet->set_row(2, 30);

        # Create a format for the column headings
        my $header1 = $workbook1->add_format();
        $header1->set_bold();
        $header1->set_size(12);
        $header1->set_color('black');
        $header1->set_pattern(); # This is optional when using a solid fill
        $header1->set_bg_color('grey');

        $sheet->write(0, 0, 'DATE', $header1);
        $sheet->write(0, 1, 'OSPF Neighbor state',$header1);
        $sheet->write(0, 2, 'Memory State',  $header1);
        $sheet->write(0, 3, 'CPU', $header1);
        $sheet->write(0, 4, 'Environment status', $header1);
        $sheet->write(0, 5, 'Device Uptime', $header1);
        $sheet->write(0, 6, 'BGP Status', $header1);

        my $dateformat = $workbook1->add_format();
        $dateformat->set_size(11);
        $dateformat->set_color('black');

        if ($ospfokay eq "Okay")
        {
                print "OSPF valure is okay hence would print in green\n";
                $okaystatus1 = $workbook1->add_format();
                $okaystatus1->set_size(11);
                $okaystatus1->set_color('green');
        }
        else
        {
                print "OSPF values is not okay hence print in red\n";
                $okaystatus1 = $workbook1->add_format();
                $okaystatus1->set_size(11);
                $okaystatus1->set_color('red');
        }

        if ($envokay eq "Okay")
        {
                print "env status is okay hence print in green\n";
                $okaystatus2 = $workbook1->add_format();
                $okaystatus2->set_size(11);
                $okaystatus2->set_color('green');
        }
        else
        {
                print "env status is not okay hence print in red\n";
                $okaystatus2 = $workbook1->add_format();
                $okaystatus2->set_size(11);
                $okaystatus2->set_color('red');
        }
        if ($mem_okay eq "Okay")
        {
                print "Memory status is okay hence print in green\n";
                $okaystatus3 = $workbook1->add_format();
                $okaystatus3->set_size(11);
                $okaystatus3->set_color('green');
        }
        else
        {
                print "Memory status is not okay hence print in red\n";
                $okaystatus3 = $workbook1->add_format();
                $okaystatus3->set_size(11);
                $okaystatus3->set_color('red');
        }
        if ($cpu_stat eq "Okay")
        {
                print "CPU status is okay hence print in green\n";
                $okaystatus4 = $workbook1->add_format();
                $okaystatus4->set_size(11);
                $okaystatus4->set_color('green');
        }
        else
        {
                print "CPU status is not okay hence print in red\n";
                $okaystatus4 = $workbook1->add_format();
                $okaystatus4->set_size(11);
                $okaystatus4->set_color('red');
        }
        if ($uptime_state eq "Okay")
        {
                print "Device uptime status is okay hence print in green\n";
                $okaystatus5 = $workbook1->add_format();
                $okaystatus5->set_size(11);
                $okaystatus5->set_color('green');
        }
        else
        {
                print "Device uptime status is not okay hence print in red\n";
                $okaystatus5 = $workbook1->add_format();
                $okaystatus5->set_size(11);
                $okaystatus5->set_color('red');
        }
        if ($bgp_state eq "Okay")
        {
                print "Device uptime status is okay hence print in green\n";
                $okaystatus6 = $workbook1->add_format();
                $okaystatus6->set_size(11);
                $okaystatus6->set_color('green');
        }
        else
        {
                print "Device uptime status is not okay hence print in red\n";
                $okaystatus6 = $workbook1->add_format();
                $okaystatus6->set_size(11);
                $okaystatus6->set_color('red');
        }
        $sheet->write(1, 0, $date_ex, $dateformat);
        $sheet->write(1, 1, $ospfokay, $okaystatus1);
        $sheet->write(1, 2, $mem_okay, $okaystatus3);
        $sheet->write(1, 3, $cpu_stat, $okaystatus4);
        $sheet->write(1, 4, $envokay, $okaystatus2);
        $sheet->write(1, 5, $uptime_state, $okaystatus5);
        $sheet->write(1, 6, $bgp_state, $okaystatus6);
}

sub telnet
{
        $count = 0;
        my $ip_1 = '*.*.*.*';
        my $ip_2 = '*.*.*.*';
        my $ip_3 = '*.*.*.*';
        ### Connecting to device using telnet
        if ( $ip =~ m/$ip_1/ || $ip =~ m/$ip_2/ || $ip =~ m/$ip_3/ )
        {
                #ReadMode 2;
                print "\nEnter enable password:";
                $enpassword = <STDIN>;
                chomp $enpassword;
                #ReadMode 0;
                print "user name is $username and password is $password\n";
                $session = Net::Telnet::Cisco->new(Host => $ip, Timeout => 10, Input_log => 'in.log', Output_log => 'out.log', Dump_log => 'dump.log');
                $session->login(Name => $username, Password => $password, Passcode => $enpassword, Prompt => '/\#2#/');
                cmd_previlege();
        }
        else
        {
                $session = Net::Telnet::Cisco->new(Host => $ip, Timeout => 10, Prompt => '/\>/');
                $session->login($username,$password);
                cmd_normal();
        }
        $session->close;
}

# Description : Main Function                                                                                                               #

my $filename = 'Device_IP_list.txt'; #Reading Device Ip from this file and logging into each device one at a time
open(my $deviceipfile, '<:encoding(UTF-8)', $filename) or die "could not open the file '$filename' $!";
print "Enter Username:";
$username = <STDIN>;
chomp $username;
# To read password without printing onto console
#ReadMode 2;
print "\nEnter Password:";
$password = <STDIN>;
chomp $password;
#ReadMode 0;
$resultospf = "ospf.txt";
$resultenv = "env_alarm.txt";
open(my $fh, "<$filename")  or die "Could not open file  $!";
while ($ip= <$fh>)
{
    chomp $ip;
    print "\nConnecting to Device $ip.....\n";
    telnet();
}
close $fh;