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#!/usr/bin/perl -w

use strict;
use HTML::Tiny;
#use CGI qw(:standard escape escapeHTML);
use CGI qw/param cookie header start_html url/;

my $h = HTML::Tiny->new( mode => 'html' );


my $pageTitle = "CC Manage Roaster";
my $homeURL = "/";
my %FIELDS = (
        roaster   =>  [qw(Roaster                  1            text                    required)],
        url       =>  [qw(URL                      2            text                    required)],
        location  =>  ['Location (City, State)',   3,           'text',                 'required'],
        note      =>  [qw(Notes                    4            textarea)],
        logo      =>  [qw(Logo                     5            image)]
);
my %fieldDisplayName = map  { $_ => $FIELDS{$_}->[0]   } keys %FIELDS;
my %fieldType        = map  { $_ => $FIELDS{$_}->[2]   } keys %FIELDS;
my @requiredFields   = sort fieldOrder grep { defined $FIELDS{$_}->[3] } keys %FIELDS;
#my @requiredFields   = grep { $FIELDS{$_}->[2] eq 'required' } keys %FIELDS;

sub fieldOrder {
        $FIELDS{$a}->[1] <=> $FIELDS{$b}->[1];
}

print header (),
                        start_html (-title => "Add / Update Roaster", -style => {'src' => "style.css"} ); 

print $h->div ({ class => "accent pageheader" }, [
  $h->h1 ($pageTitle),
  $h->div ({ class=>"sp0" }, [
    $h->div ({ class=>"spLeft" }, [
    ]),
    $h->div ({ class=>"spRight" }, [
      $h->input ({ type=>"button", value=>"Home", onClick=>"window.location.href='$homeURL'" }),
    ]),
  ]),
]);

my $choice = param ("choice") // "";
if ($choice eq "Save") {
        process_form ();
} elsif (defined (param ("roaster"))) {
  my $roaster = param ("roaster");
        display_form ($roaster, $choice);
} else {
        display_form (); # blank form
}

print $h->close ("html");


sub display_form  {
  my $R = shift;
  my $view = shift // "";
  my $hiddenR = "";
        my $actionbutton;
  
  my ($U, $L, $I, $N, $logo);
        
  if ($R) {
    # we're updating an existing roaster.  Get the current values out of the DB...
    use WebDB;
    my $dbh = WebDB::connect ();
          ($U, $L, $N) = $dbh->selectrow_array (
                     "SELECT url, location, note FROM roasters WHERE roaster = ?",
                      undef, $R);
          $dbh->disconnect ();
          my $i = "serve_image.pl" . sprintf ("?name=%s", $h->url_encode ($R));
          $I = $h->img ({ src => "$i;thumbnail=1", alt => $R });
          
          # did we find a record?
          error ("Cannot find Roaster named $R") unless defined ($L);

    if ($view eq "Update") {
      print $h->p ("Updating Roaster $R...");
      $R = formField ('roaster', $R);
      $U = formField ('url', $U);
      $L = formField ('location', $L);
      $N = formField ('note', $N);
      $logo = $I.'&nbsp;&nbsp;&nbsp;' . formField ('logo');
      
      $actionbutton = formField ("choice", "Save");
      $actionbutton .= formField ("choice", "Cancel");
    } else {
      print $h->p ("Viewing Roaster $R...");
      $logo = $I;
      $hiddenR = $h->input ({ type=>"hidden", name=>"roaster", value=> "$R" });
      $actionbutton = formField ("choice", "Update");
    }
  } else {
    print $h->p ("Adding a new Roaster...");

    $R = formField ('roaster');
    $U = formField ('url');
    $L = formField ('location');
    $N = formField ('note');
    $logo = formField ('logo');
                
    $actionbutton = formField ("choice", "Save");
  }
  
  
        print $h->open ("form", { action => url (), method=>"POST", enctype=>"multipart/form-data" });
        print $h->div ({ class=>"rTable" }, [
    $h->div ({ class=>"rTableRow" }, [
      $h->div ({ class=>"rTableCell right" }, "$fieldDisplayName{'roaster'}: "),
      $h->div ({ class=>"rTableCell" }, [ $hiddenR, $R ])
    ]),
    $h->div ({ class=>"rTableRow" }, [
      $h->div ({ class=>"rTableCell right" }, "$fieldDisplayName{'url'}: "),
      $h->div ({ class=>"rTableCell" }, $U)
    ]),
    $h->div ({ class=>"rTableRow" }, [
      $h->div ({ class=>"rTableCell right" }, "$fieldDisplayName{'location'}: "),
      $h->div ({ class=>"rTableCell" }, $L)
    ]),
    $h->div ({ class=>"rTableRow" }, [
      $h->div ({ class=>"rTableCell right top" }, "$fieldDisplayName{'note'}: "),
      $h->div ({ class=>"rTableCell" }, $N)
    ]),
    $h->div ({ class=>"rTableRow" }, [
      $h->div ({ class=>"rTableCell right top" }, "$fieldDisplayName{'logo'}: "),
      $h->div ({ class=>"rTableCell" }, $logo)
    ]),
  ]);

  print $actionbutton;
  print $h->close ("form");

  printJavascript ();

}

sub process_form  {
  use WebDB;
  
  my %FORM;  
  foreach (keys %FIELDS) {
        if ($fieldType{$_} =~ /^text/) {
                $FORM{$_} = WebDB::trim param ($_) // "";
        } else {
                $FORM{$_} = param ($_) // "";           
        }
  }
        
  my $dbh;
  my ($full, $thumb, $mime_type);
  my $serve_url;
  
         # check for required fields
        my @errors = ();
        foreach (@requiredFields) {
                push @errors, "$fieldDisplayName{$_} is missing." if $FORM{$_} eq "";
        }
        
  if (@errors)   {
    print $h->div ({ class=>"error" }, [
          $h->p ("The following errors occurred:"),
          $h->ul ($h->li (@errors)),
          $h->p ("Please click your Browser's Back button to\n"
                   . "return to the previous page and correct the problem.")
        ]);
        return;
  }      # Form was okay;  get image type and contents and create new record.
        
  # Use REPLACE to clobber any old image with the same name.
  $dbh = WebDB::connect ();
  if ($FORM{logo}) {
    $mime_type = uploadInfo ($FORM{logo})->{'Content-Type'};
    ($full, $thumb) = read_image_file ($FORM{logo});
    $dbh->do (
                  "REPLACE INTO roasters
                    (roaster,url,logo,thumbnail,location,note,mime_type)
                    VALUES(?,?,?,?,?,?,?)",
                           undef,
                           $FORM{roaster}, $FORM{url}, $full, $thumb, $FORM{location}, $FORM{note}, $mime_type);
  } else {
    $dbh->do (
                  "INSERT INTO roasters
                    (roaster,url,location,note)
                    VALUES(?,?,?,?)
                    ON DUPLICATE KEY UPDATE url = ?, location = ?, note = ?",
                           undef,
                           $FORM{roaster}, $FORM{url}, $FORM{location}, $FORM{note}, $FORM{url}, $FORM{location}, $FORM{note});
  }
        $dbh->disconnect ();     # Image was stored into database successfully.  Present confirmation
                 # page that displays both the full size and thumbnail images.
        print $h->p ({ class=>"success" }, "Roaster successfully saved.");

  display_form ($FORM{roaster});
}

use Image::Magick;
sub read_image_file {
        my $fh = shift;             # filename/file handle
        my $img = new Image::Magick;
        my ($full, $thumb);
        my $err;
        # read full-size image directly from upload file
        (read ($fh, $full, (stat ($fh))[7]) == (stat ($fh))[7])
          or error ("Can't read image file: $!");
        # produce thumbnail from full-size image
        $err = $img->BlobToImage ($full);
        error ("Can't convert image data: $err") if $err;
        $err = $img->Scale (geometry => "64x64");
        error ("Can't scale image file: $err") if $err;
        $thumb = $img->ImageToBlob ();
        return ($full, $thumb);
}

sub error {
        my $msg = shift;
        print $h->p ({ class=>"error" }, "Error: $msg");
  print $h->close("html");
        exit (0);
}

sub formField {
        my $name  = shift;
        my $value = shift // '';
        my $type = $fieldType{$name} // "button";
        
        if ($type eq "image") {
                return $h->input ({
        name => $name,
        class => "inputfile",
        type => "file",
        id   => "file",
        size => 60
      }) . $h->label ({ for=>"file", class=>"top" }, $h->span ("Choose File..."));

        } elsif ($type eq "button") {
                if ($name eq "Cancel") {
                        return $h->input ({ type=>"submit", value => "Cancel", onClick=>"history.back();" })
                } else {
                        return $h->input ({ type=>"submit", value => $value, name=>$name })
                }

        } elsif ($type eq "textarea") {
          return $h->tag ("textarea", {
            name => $name,
            override => 1,
                        cols => 30,
                        rows => 4
          }, $value);           

        }       else {
          return $h->input ({
            name => $name,
            type => $type,
            value => $value,
            required => [],
            override => 1,
            size => 30
          });           
        }
}

sub printJavascript {
    print<<JSCRIPT;
  

<SCRIPT language="JavaScript">
<!--

var inputs = document.querySelectorAll( '.inputfile' );
Array.prototype.forEach.call( inputs, function( input )
{
        var label        = input.nextElementSibling,
                labelVal = label.innerHTML;

        input.addEventListener( 'change', function( e )
        {
                var fileName = e.target.value.split( '\\\\' ).pop();
                if( fileName )
                        label.querySelector( 'span' ).innerHTML = fileName;
                else
                        label.innerHTML = labelVal;
        });
});

//-->
</SCRIPT>


JSCRIPT

}