lib/MojoFacets/Data.pm

   1 package MojoFacets::Data;
   2
   3 use strict;
   4 use warnings;
   5
   6 use base 'Mojolicious::Controller';
   7
   8 use Data::Dump qw(dump);
   9 use File::Slurp;
  10 use Encode;
  11 use locale;
  12 use File::Find;
  13 use Storable;
  14 use Time::HiRes qw(time);
  15 use File::Path qw(mkpath);
  16 use Text::Unaccent::PurePerl;
  17 use Digest::MD5;
  18 use Statistics::Descriptive;
  19
  20 use MojoFacets::Import::File;
  21 use MojoFacets::Import::HTMLTable;
  22 use MojoFacets::Import::CSV;
  23 use MojoFacets::Import::CouchDB;
  24 use MojoFacets::Import::SQL;
  25
  26 our $loaded;
  27 our $filters;
  28
  29 sub index {
  30         my $self = shift;
  31
  32         my $data_dir = $self->app->home->rel_dir('data');
  33         die "no data dir $data_dir" unless -d $data_dir;
  34
  35         my @files;
  36         my $changes;
  37         find( sub {
  38                 my $file = $File::Find::name;
  39                 if ( -f $file && $file =~ m/\.(js(on)?|txt)$/ ) {
  40                         $file =~ s/$data_dir\/*//;
  41                         push @files, $file;
  42                 } elsif ( -f $file && $file =~ m/([^\/]+)\.changes\/(\d+\.\d+.+)/ ) {
  43                         push @{ $changes->{$1} }, $2
  44                 } elsif ( -d $file && $file =~ m/\.html$/ ) {
  45                         $file =~ s/$data_dir\/*//;
  46                         push @files, $file;
  47                 } elsif ( -f $file && $file =~ m/\.(csv|storable|couchdb|sql)$/i ) {
  48                         $file =~ s/$data_dir\/*//;
  49                         push @files, $file;
  50                 } else {
  51                         #warn "IGNORE: $file\n";
  52                 }
  53         }, $data_dir);
  54
  55         no warnings qw(uninitialized); # mtime
  56         @files = sort { $loaded->{$b}->{mtime} <=> $loaded->{$a}->{mtime} || lc $a cmp lc $b } @files,
  57                         grep { defined $loaded->{$_}->{generated} } keys %$loaded;
  58
  59         my $size;
  60         $size->{$_} = -s "$data_dir/$_" foreach @files;
  61
  62         $self->render(
  63                 files => [ @files ],
  64                 size => $size,
  65                 loaded => $loaded,
  66                 filters => $filters,
  67                 dump_path => { map { $_ => $self->_dump_path($_) } @files },
  68                 changes => $changes,
  69         );
  70 }
  71
  72 sub _dump_path {
  73         my ( $self, $name ) = @_;
  74         my $dir = $self->app->home->rel_dir('data');
  75         $name =~ s/^$dir//;
  76         $name =~ s/\/+/_/g;
  77         return '/tmp/mojo_facets.' . $name . '.storable';
  78 }
  79
  80 sub _save {
  81         my ( $self, $path ) = @_;
  82
  83         my $dump_path = $self->_dump_path( $path );
  84         my $first_load = ! -e $dump_path;
  85         warn "save loaded to $dump_path";
  86         my $info = $loaded->{$path};
  87         store $info, $dump_path;
  88
  89         if ( $first_load ) {
  90                 my $mtime = $loaded->{$path}->{mtime};
  91                 utime $mtime, $mtime, $dump_path;
  92                 warn "sync time to $path at $mtime\n";
  93         }
  94
  95         warn $dump_path, ' ', -s $dump_path, " bytes\n";
  96         return $dump_path;
  97 }
  98
  99
 100 sub __stats {
 101
 102         my $stats;
 103
 104         my $nr_items = $#{ $_[0] } + 1;
 105
 106         warn "__stats $nr_items\n";
 107
 108 #       foreach my $e ( @{ $_[0] } ) {
 109         foreach my $i ( 0 .. $#{$_[0]} ) {
 110                 print STDERR " $i" if $i % 5000;
 111                 my $e = $_[0]->[$i];
 112                 foreach my $n ( keys %$e ) {
 113                         $stats->{$n}->{count}++;
 114                         my @v;
 115                         if ( ref $e->{$n} eq 'ARRAY' ) {
 116                                 $stats->{$n}->{array} += $#{ $e->{$n} } + 1;
 117                                 @v = @{ $e->{$n} };
 118                         } else {
 119                                 @v = ( $e->{$n} );
 120                         }
 121
 122                         foreach my $x ( @v ) {
 123                                 if ( ! defined $x ) { # FIXME really null
 124                                         $stats->{$n}->{empty}++;
 125                                         next;
 126                                 }
 127
 128                                 $stats->{$n}->{numeric}++
 129                                         if $x =~ m/^[-+]?([0-9]*\.[0-9]+|[0-9]+)$/;
 130                                 $stats->{$n}->{empty}++
 131                                         if length $x == 0; # faster than $x =~ m/^\s*$/;
 132                         }
 133
 134                 }
 135         }
 136
 137         foreach my $n ( keys %$stats ) {
 138                 my $s = $stats->{$n};
 139                 next unless defined $s->{array};
 140                 if ( $s->{array} == $s->{count} ) {
 141                         delete $s->{array};
 142                         if ( $s->{count} == $nr_items ) {
 143                                 warn "check $n for uniqeness\n";
 144                                 my $unique;
 145                                 foreach my $e ( @{ $_[0] } ) {
 146                                         if ( ++$unique->{ $e->{$n}->[0] } == 2 ) {
 147                                                 $unique = 0;
 148                                                 last;
 149                                         }
 150                                 }
 151                                 if ( $unique ) {
 152                                         $stats->{$n}->{unique} = 1;
 153                                         #warn "# $n unique ",dump( $unique );
 154                                 }
 155                         }
 156                 }
 157         }
 158
 159         warn "# __stats ",dump($stats);
 160
 161         return $stats;
 162 }
 163
 164 sub _param_or_session {
 165         $_[0]->param( $_[1] ) || $_[0]->session( $_[1] )
 166 }
 167
 168 sub stats {
 169         my $self = shift;
 170         my $path = $self->_param_or_session('path');
 171         warn "stats $path\n";
 172         delete $loaded->{$path}->{stats};
 173         return $self->redirect_to( '/data/columns' );
 174 }
 175
 176
 177 sub _load_path {
 178         my ( $self, $path ) = @_;
 179
 180         return if defined $loaded->{$path}->{generated};
 181
 182         my $full_path = $self->app->home->rel_file( 'data/' . $path );
 183         return $self->redirect_to('/data/index') unless -r $full_path;
 184
 185         my $dump_path = $self->_dump_path( $path );
 186
 187         if ( defined $loaded->{$path}->{data} ) {
 188                 my $mtime = (stat($full_path))[9];
 189                 return if $loaded->{$path}->{mtime} == $mtime;
 190                 warn "reload $full_path, modified ", time() - $mtime, " seconds ago\n";
 191         } elsif ( -e $dump_path ) {
 192                 warn "dump_path $dump_path ", -s $dump_path, " bytes loading...\n";
 193                 my $info = retrieve $dump_path;
 194                 $loaded->{ $path } = $info;
 195                 return;
 196         }
 197
 198         my $data;
 199         if ( -f $full_path ) {
 200                 if ( $full_path =~ m/.storable$/ ) { # check storable first to catch files copied from /tmp/
 201                         $data->{generated}++;
 202                         warn "open $full_path ", -s $full_path, " bytes";
 203                         open(my $pipe, "<", $full_path) || die $!;
 204                         while ( my $o = eval { Storable::fd_retrieve $pipe } ) {
 205                                 if ( exists $o->{item} ) {
 206                                         # stream of storable objects
 207                                         push @{ $data->{items} }, $o->{item};
 208                                 } elsif ( exists $o->{data}->{items} ) {
 209                                         # /tmp/mojofacets.*.storable
 210                                         $data->{items} = $o->{data}->{items};
 211                                         $data->{header} = $o->{header};
 212                                         delete $data->{generated};
 213                                 } else {
 214                                         warn "SKIP ",dump($o);
 215                                 }
 216                         }
 217                         close($pipe);
 218                         warn "loaded ", $#{ $data->{items} } + 1, " items from $full_path\n";
 219                 } elsif ( $full_path =~ m/.csv/i ) {
 220                         $data = MojoFacets::Import::CSV->new( full_path => $full_path )->data;
 221                 } elsif ( $full_path =~ m/.sql/i ) {
 222                         $data = MojoFacets::Import::SQL->new( full_path => $full_path )->data;
 223                 } elsif ( $full_path =~ m/.couchdb/i ) {
 224                         $data = MojoFacets::Import::CouchDB->new( full_path => $full_path )->data;
 225                 } else {
 226                         $data = MojoFacets::Import::File->new( full_path => $full_path, path => $path )->data;
 227                 }
 228         } elsif ( -d $full_path && $full_path =~ m/.html/ ) {
 229                 $data = MojoFacets::Import::HTMLTable->new( dir => $full_path )->data;
 230         } else {
 231                 die "can't load $full_path";
 232         }
 233
 234         my @header;
 235
 236         if ( defined $data->{header} ) {
 237                 if ( ref $data->{header} eq 'ARRAY' ) {
 238                         @header = @{ $data->{header} };
 239                 } else {
 240                         warn "header not array ", dump( $data->{header} );
 241                 }
 242         }
 243
 244         my $stats = __stats( $data->{items} );
 245
 246         @header =
 247                 sort { $stats->{$b}->{count} <=> $stats->{$a}->{count} }
 248                 grep { defined $stats->{$_}->{count} } keys %$stats
 249                 unless @header;
 250
 251         my $info = {
 252                 header => [ @header ],
 253                 stats  => $stats,
 254                 full_path => $full_path,
 255                 size => -s $full_path,
 256                 mtime => (stat($full_path))[9],
 257                 data => $data,
 258                 defined $data->{generated} ? ( generated => 1 ) : (),
 259         };
 260
 261         $loaded->{ $path } = $info;
 262         $self->_save( $path ) unless $info->{generated};
 263
 264 }
 265
 266
 267 sub load {
 268         my $self = shift;
 269
 270         my $path = $self->param('path') || return $self->redirect_to( '/data/index' );
 271
 272         my @paths = $self->param('paths');
 273         warn "# paths ", dump @paths;
 274
 275         foreach my $p ( keys %$loaded ) {
 276                 next if grep { /^\Q$p\E$/ } @paths;
 277                 warn "remove $p from memory\n";
 278                 delete $loaded->{$p};
 279         }
 280
 281         $self->_load_path( $_ ) foreach @paths;
 282
 283         warn "# path $path\n";
 284         $self->_load_path( $path );
 285
 286         $self->session( 'path' => $path );
 287
 288         my $redirect_to = '/data/items';
 289
 290         $self->session( 'header' => $loaded->{$path}->{header} );
 291         if ( ! defined $loaded->{$path}->{columns} ) {
 292                 my $columns_path = $self->_permanent_path( 'columns' );
 293                 if ( -e $columns_path ) {
 294                         my @columns = map { s/[\r\n]+$//; $_ } read_file $columns_path, binmode => ':utf8';
 295                         $loaded->{$path}->{columns} = [ @columns ];
 296                         warn "# columns_path $columns_path ",dump(@columns);
 297                 } else {
 298                         $loaded->{$path}->{columns} = $loaded->{$path}->{header}
 299                 }
 300
 301                 $redirect_to = '/data/columns';
 302         }
 303         $self->session( 'columns' => $loaded->{$path}->{columns} );
 304         $self->session( 'order'   => $loaded->{$path}->{columns}->[0] );
 305         return $self->redirect_to( $redirect_to );
 306 }
 307
 308
 309 sub _loaded {
 310         my ( $self, $name ) = @_;
 311         my $path = $self->session('path') || $self->param('path');
 312         return $self->redirect_to('/data/index') unless $path;
 313
 314         if ( defined $loaded->{$path}->{modified} && $loaded->{$path}->{modified} > 1 ) {
 315                 my $caller = (caller(1))[3];
 316                 if ( $caller =~ m/::edit/ ) {
 317                         warn "rebuild stats for $path ignored caller $caller\n";
 318                 } else {
 319                         warn "rebuild stats for $path FORCED by modified caller $caller\n";
 320 #                       $loaded->{$path}->{stats} = __stats( $loaded->{$path}->{data}->{items} );
 321                         $loaded->{$path}->{rebuild_stats} = 1;
 322                         $loaded->{$path}->{modified} = 1;
 323                 }
 324         }
 325
 326         if ( defined $loaded->{$path}->{rebuild_stats} ) {
 327                 warn "rebuild_stats $path";
 328                 $loaded->{$path}->{stats} = __stats( $loaded->{$path}->{data}->{items} );
 329                 delete $loaded->{$path}->{rebuild_stats};
 330         }
 331
 332         if ( ! defined $loaded->{$path}->{$name} ) {
 333                 warn "$path $name isn't loaded\n";
 334                 $self->_load_path( $path );
 335                 if ( ! defined $loaded->{$path}->{stats} ) {
 336                         warn "rebuild stats for $path\n";
 337                         $loaded->{$path}->{stats} = __stats( $loaded->{$path}->{data}->{items} );
 338                 }
 339                 if ( ! defined $loaded->{$path}->{$name} ) {
 340                         warn "MISSING $name for $path\n";
 341                         return $self->redirect_to('/data/index')
 342                 }
 343         }
 344
 345         $self->session( 'modified' => $loaded->{$path}->{modified} );
 346
 347         return $loaded->{$path}->{$name};
 348 }
 349
 350
 351 sub _checked {
 352         my $self = shift;
 353         my $checked;
 354         $checked->{$_}++ foreach @_;
 355 #       warn "# _checked ",dump($checked);
 356         return $checked;
 357 }
 358
 359 sub _permanent_path {
 360         my $self = shift;
 361         my $path = $self->_param_or_session('path');
 362         $self->app->home->rel_dir('data') . '/' . join('.', $path, @_);
 363 }
 364
 365 sub __unac {
 366         my $n = shift;
 367         $n = unac_string($n);
 368         $n =~ s/\W+/_/g;
 369         return $n;
 370 }
 371
 372 sub _column_from_unac {
 373         my ($self,$name) = @_;
 374
 375         my $stats = $self->_loaded('stats');
 376         my $cols_norm = { map { __unac( $_ ) => $_ } keys %$stats };
 377
 378         $cols_norm->{$name} || die "can't find column $name in ", dump($cols_norm);
 379 }
 380
 381 sub _export_path {
 382         my $self = shift;
 383         my $path = $self->_param_or_session('path');
 384         if ( ! $path ) {
 385                 warn "no path in param or session";
 386                 return;
 387         }
 388         my $dir = $self->app->home->rel_dir('public') . "/export/$path";
 389         mkpath $dir unless -e $dir;
 390         my $name = __export_path_name( $path, @_ );
 391         my $full = $dir . '/' . $name;
 392         $full =~ s/\/+$// if -d $full; # strip trailing slash for dirs
 393         return $full;
 394 }
 395
 396 sub __export_path_name {
 397         my $max_length = 80;
 398
 399         my $path = shift;
 400         my $name = join('.', map { __unac($_) } @_ );
 401         if ( length($name) > $max_length ) {
 402                 $name = substr($name,0,$max_length) . Digest::MD5::md5_hex substr($name,$max_length);
 403         }
 404         return $name;
 405 }
 406
 407 sub columns {
 408     my $self = shift;
 409
 410         my $view_path = $self->_permanent_path( 'views' );
 411
 412         if ( $self->param('columns') ) {
 413                 my @columns = $self->_param_array('columns');
 414                 write_file( $self->_permanent_path( 'columns' ), { binmode => ':utf8' }, map { "$_\n" } @columns );
 415                 if ( my $view = $self->param('view') ) {
 416                         mkdir $view_path unless -e $view_path;
 417                         write_file( "$view_path/$view", { binmode => ':utf8' }, map { "$_\n" } @columns );
 418                         warn "view $view_path/$view ", -s "$view_path/$view", " bytes\n";
 419                 }
 420
 421                 return $self->redirect_to('/data/items');
 422
 423         } elsif ( ! $self->session('header') ) {
 424                 return $self->redirect_to('/data/load');
 425         }
 426
 427         if ( my $id = $self->param('id') ) {
 428                 my $view_full = "$view_path/$id";
 429                 if ( -f $view_full ) {
 430                         my @columns = map { chomp; $_ } read_file $view_full, binmode => ':utf8';
 431                         warn "view $view_full loaded ", dump @columns;
 432                         $self->session( 'columns' => [ @columns ] );
 433                         return $self->redirect_to('/data/items');
 434                 }
 435         }
 436
 437         my $stats = $self->_loaded( 'stats' );
 438
 439         my @columns;
 440         @columns = grep { defined $stats->{$_}->{count} } @{ $self->session('columns') } if $self->session('columns');
 441
 442         foreach my $c ( @{ $self->session( 'header' ) } ) {
 443                 push @columns, $c unless grep { /^\Q$c\E$/ } @columns;
 444         }
 445
 446         my @views;
 447         if ( -d $view_path ) {
 448                 @views = map { s{^\Q$view_path\E/*}{}; $_ } glob "$view_path/*";
 449                 warn "# views ",dump @views;
 450         }
 451
 452     $self->render(
 453                 message => 'Select columns to display',
 454                 stats => $stats,
 455                 columns => \@columns,
 456                 checked => $self->_checked( $self->_param_array('columns') ),
 457                 views => \@views,
 458         );
 459 }
 460
 461 sub _param_array {
 462     my ($self,$name) = @_;
 463
 464         my @array = $self->param($name);
 465         my $path  = $self->session('path');
 466
 467         if ( @array ) {
 468                 $self->session($name => [ @array ]);
 469                 $loaded->{$path}->{$name} = [ @array ];
 470         } elsif ( my $session = $self->session($name) ) {
 471                 if ( ref $session eq 'ARRAY' ) {
 472                         @array = @$session;
 473                 } else {
 474                         die "$name not array ",dump($session);
 475                 }
 476         }
 477         #warn "# $name ",dump @array;
 478         return @array;
 479 }
 480
 481 sub _param_scalar {
 482     my ($self,$name,$default) = @_;
 483
 484         my $scalar = $self->param($name);
 485
 486         if ( defined $scalar ) {
 487                 $self->session($name => $scalar);
 488         } else {
 489                 $scalar = $self->session($name);
 490         }
 491
 492         if ( ! defined $scalar ) {
 493                 $scalar = $default;
 494                 die "no default for $name" unless defined $scalar;
 495                 $self->session($name => $scalar);
 496         }
 497
 498         warn "# _param_scalar $name ",dump $scalar;
 499         return $scalar;
 500 }
 501
 502 sub filter {
 503         my $self = shift;
 504
 505         my $name = $self->param('filter_name') || die "name?";
 506         my @vals = $self->param('filter_vals');
 507
 508         $self->_remove_filter( $name );
 509         if ( @vals ) {
 510                 $self->_filter_on_data( $name, @vals );
 511                 if ( my $permanent = $self->param('_permanent') ) {
 512                         my $permanent_path = $self->_export_path( 'filter', $name, $permanent );
 513                         write_file $permanent_path, { binmode => ':utf8' }, map { "$_\n" } @vals;
 514                         warn "permanent filter $permanent_path ", -s $permanent_path;
 515                 }
 516         }
 517
 518         $self->session( 'offset' => 0 );
 519
 520         return $self->redirect_to('/data/items');
 521 }
 522
 523 sub _filter_on_data {
 524         my ( $self, $name, @vals ) = @_;
 525
 526         my $path = $self->session('path');
 527
 528         if ( ! defined $loaded->{$path}->{stats}->{ $name } ) {
 529                 warn "filter $name not found in data set";
 530                 return;
 531         }
 532
 533         $filters->{$name} = [ @vals ];
 534         warn "_filter_on_data $name ", $#vals + 1, " values on $path\n";
 535
 536         my $filter_hash;
 537         $filter_hash->{$_}++ foreach @vals;
 538
 539         #warn "# filter_hash ",dump( $filter_hash );
 540
 541         my $items = $self->_loaded('data')->{items};
 542
 543         my $include_missing = defined $filter_hash->{_missing};
 544         my $filtered_items;
 545
 546         foreach my $i ( 0 .. $#$items ) {
 547
 548                 if ( defined $items->[$i]->{$name} ) {
 549                         my $row = $items->[$i]->{$name};
 550                         $row = [ $row ] unless ref $row eq 'ARRAY'; # FIXME probably wrong place
 551                         foreach my $v ( @$row ) {
 552                                 if ( defined $filter_hash->{ $v } ) {
 553                                         $filtered_items->{$i}++;
 554                                 }
 555                         }
 556                 } elsif ( $include_missing ) {
 557                         $filtered_items->{$i}++;
 558                 }
 559         }
 560
 561         #warn "# filter $name ",dump($filtered_items);
 562
 563         # invalidate filters on other datasets
 564         foreach my $dataset ( grep { exists $loaded->{$_}->{filters}->{$name} } keys %$loaded ) {
 565                 delete $loaded->{$dataset}->{filters}->{$name};
 566                 delete $loaded->{$dataset}->{filtered};
 567         }
 568
 569         $loaded->{$path}->{filters}->{$name} = $filtered_items;
 570         warn "filter $name with ", scalar keys %$filtered_items, " items created\n";
 571 }
 572
 573
 574 sub _current_filters {
 575         my $self = shift;
 576         my $current_filters;
 577         my $stats = $self->_loaded('stats');
 578
 579         $current_filters->{ $_ } = $filters->{ $_ }
 580                 foreach ( grep { defined $filters->{ $_ } } keys %$stats )
 581         ;
 582         warn "# _current_filters ",dump( keys %$current_filters );
 583         return $current_filters;
 584 }
 585
 586 sub _data_sorted_by {
 587         my ( $self, $order ) = @_;
 588
 589         my $path = $self->session('path');
 590
 591         warn "_data_sorted_by $order from $path";
 592
 593         if ( defined $loaded->{$path}->{sorted}->{$order} ) {
 594                 return $loaded->{$path}->{sorted}->{$order};
 595         }
 596
 597         my $data = $self->_loaded( 'data' );
 598         my $numeric = $self->_is_numeric($order);
 599         my $missing = $numeric ? 0 : '';
 600         no warnings qw(numeric);
 601         my $nr = 0;
 602         my @sorted = map {
 603                 $_->[0]
 604         } sort {
 605                 if ( $numeric ) {
 606                         $a->[1] <=> $b->[1]
 607                 } else {
 608                         $a->[1] cmp $b->[1]
 609                 }
 610         } map {
 611                 my $v;
 612                 if ( ! exists $_->{$order} ) {
 613                         $v = $missing;
 614                 } elsif ( ref $_->{$order} eq 'ARRAY' ) {
 615                         $v = join('', @{$_->{$order}});
 616                 } else {
 617                         $v = $_->{$order};
 618                 }
 619                 [ $nr++, $v ]
 620         } @{ $data->{items} }
 621         ;
 622
 623         warn "sorted: $order numeric: $numeric items: ", $#sorted + 1, "\n";
 624         #warn "# sorted ",dump( @sorted );
 625
 626         $loaded->{$path}->{sorted}->{$order} = [ @sorted ];
 627 }
 628
 629
 630 sub __all_filters {
 631         my $order = pop @_;
 632         join(',', sort(@_), 'order', $order);
 633 }
 634
 635 our ($out, $key,$value);
 636
 637 our $lookup_path_col;
 638 our $on;
 639
 640 sub __commit_begin {
 641         warn "__commit_begin";
 642         $lookup_path_col = undef;
 643         $on = undef;
 644 }
 645
 646 sub __commit_end {
 647         warn "__commit_end";
 648         $lookup_path_col = undef; # cleanup memory
 649         $on = undef;
 650 }
 651
 652 sub lookup {
 653         warn "# lookup ",dump @_;
 654         my ( $vals, $on_path, $on_col, $code, $stat_code ) = @_;
 655         die "code is not sub{ ... } but ", dump $code unless ref $code eq 'CODE';
 656
 657         if ( ! exists $loaded->{$on_path} ) {
 658                 my @possible_paths = grep { /\Q$on_path\E/ } keys %$loaded;
 659                 die "more than one dataset available for '$on_path' ",dump @possible_paths if $#possible_paths > 0;
 660                 $on_path = shift @possible_paths;
 661                 warn "## fuzzy selected path $on_path";
 662         }
 663
 664         my $items = $loaded->{$on_path}->{data}->{items} || die "no items for $on_path";
 665
 666         if ( ! exists $lookup_path_col->{$on_path}->{$on_col} ) {
 667                 warn "create lookup_path_col $on_path $on_col";
 668                 foreach my $i ( 0 .. $#$items ) {
 669                         my $item = $items->[$i];
 670                         if ( exists $item->{$on_col} ) {
 671                                 if ( ref $item->{$on_col} eq 'ARRAY' ) {
 672                                         foreach my $v ( @{ $item->{$on_col} } ) {
 673                                                 push @{ $lookup_path_col->{$on_path}->{$on_col}->{$v} }, $i;
 674                                         }
 675                                 } elsif ( ! ref $item->{$on_col} ) { # scalar
 676                                         my $v = $item->{$on_col};
 677                                         push @{ $lookup_path_col->{$on_path}->{$on_col}->{$v} }, $i;
 678                                 } else {
 679                                         die "unknown type of ",dump $item->{$on_col};
 680                                 }
 681                         }
 682                 }
 683                 warn "XXX ",dump $lookup_path_col->{$on_path}->{$on_col} if $ENV{DEBUG};
 684         }
 685
 686         my $stat;
 687         $stat = Statistics::Descriptive::Full->new() if $stat_code;
 688
 689         foreach my $v ( ref $vals eq 'ARRAY' ? @$vals : ( $vals ) ) {
 690                 foreach my $i ( @{ $lookup_path_col->{$on_path}->{$on_col}->{$v} } ) {
 691                         $on = $items->[$i];
 692                         warn "XXX lookup code $v $i ",dump $on if $ENV{DEBUG};
 693                         $code->($stat);
 694                 }
 695                 $stat_code->( $stat ) if $stat_code;
 696         }
 697 }
 698
 699 sub __commit_path_code {
 700         my ( $path, $i, $code, $commit_changed ) = @_;
 701
 702         my $items = $loaded->{$path}->{data}->{items} || die "no items for $path";
 703         my $row = $items->[$i];
 704         my $update;
 705         eval $code;
 706         foreach ( keys %$update ) {
 707                 $$commit_changed->{$_}++;
 708                 $loaded->{$path}->{data}->{items}->[$i]->{$_} = $update->{$_};
 709         }
 710         #warn "__commit_path_code $path $i ",dump( $update );
 711 }
 712
 713 # uses templates/admin.html.ep
 714 sub _switch_dataset {
 715         my $self = shift;
 716
 717         my $datasets;
 718
 719         foreach my $path ( keys %$loaded ) {
 720                 next unless exists $loaded->{$path}->{data};
 721                 push @$datasets, $path;
 722         }
 723
 724         warn "# datasets ",dump($datasets);
 725
 726         $self->stash( 'datasets' => $datasets );
 727 }
 728
 729 sub items {
 730         my $self = shift;
 731
 732         $self->_switch_dataset;
 733
 734         if ( my $show = $self->param('id') ) {
 735                 $self->param('show', $show);
 736                 warn "show $show\n";
 737         }
 738
 739         my $path = $self->_param_scalar('path');
 740
 741         my @columns = $self->_param_array('columns');
 742         return $self->redirect_to('/data/columns') unless @columns;
 743         my $order   = $self->_param_scalar('order', $columns[0]);
 744         my $sort    = $self->_param_scalar('sort', 'a');
 745         my $offset  = $self->_param_scalar('offset', 0);
 746         my $limit   = $self->_param_scalar('limit', 20);
 747         $self->_param_scalar('show', 'table');
 748
 749         # fix offset when changing limit
 750         $offset = int( $offset / $limit ) * $limit;
 751
 752         if ( ! grep { /^\Q$order\E$/ } @columns ) {
 753                 $order = $columns[0];
 754                 $self->session( order => $order );
 755         }
 756         my $sorted = $self->_data_sorted_by( $order );
 757
 758         my @filter_names;
 759         if ( $filters ) {
 760                 foreach my $name ( keys %$filters ) {
 761                         if ( ! defined $loaded->{$path}->{stats}->{ $name } ) {
 762                                 warn "skip filter $name not found in $path\n";
 763                                 next;
 764                         }
 765                         push @filter_names, $name;
 766                 }
 767                 warn "filter_names ",dump( @filter_names );
 768                 foreach my $name ( @filter_names ) {
 769                         next if ref $loaded->{$path}->{filters}->{$name} eq 'ARRAY';
 770                         $self->_filter_on_data( $name, @{ $filters->{$name} } );
 771                 }
 772         }
 773
 774         my $all_filters = __all_filters( @filter_names,$order );
 775
 776 #       warn "# all_filters $all_filters ", dump( $loaded->{$path}->{filtered}->{$all_filters} );
 777
 778         if ( ! defined $loaded->{$path}->{filtered}->{$all_filters} ) {
 779
 780                 my $path_filters = $loaded->{$path}->{filters};
 781
 782                 warn "create combined filter for $all_filters from ", $#$sorted + 1, " items\n";
 783
 784                 my @filtered;
 785                 foreach my $i ( 0 .. $#$sorted ) {
 786                         my $pos = $sorted->[$i];
 787
 788                         if ( $#filter_names == -1 ) {
 789                                 push @filtered, $pos;
 790                                 next;
 791                         }
 792
 793                         my $skip = 0;
 794                         foreach ( @filter_names ) {
 795                                 $skip ||= 1 if ! defined $path_filters->{$_}->{$pos};
 796                         }
 797                         next if $skip;
 798
 799                         push @filtered, $pos;
 800                 }
 801
 802                 $loaded->{$path}->{filtered}->{$all_filters} = [ @filtered ];
 803         }
 804
 805         my $filtered = $loaded->{$path}->{filtered}->{$all_filters}
 806                 if defined $loaded->{$path}->{filtered}->{$all_filters};
 807
 808         warn "all_filters $all_filters produced ", $#$filtered + 1, " items\n" if $filtered;
 809
 810         my $data = $self->_loaded('data');
 811
 812         my $code = $self->_param_scalar('code','');
 813         $code =~ s{\r}{}gs;
 814         $code =~ s{\n+$}{\n}s;
 815
 816         # XXX convert @row->{foo} into @{$row->{foo}}
 817         $code =~ s|\@(row->{[^}]+})|\@{\$$1}|gs;
 818
 819         my $commit = $self->param('commit');
 820         my $test = $self->param('test');
 821
 822         my $commit_changed;
 823         __commit_begin;
 824
 825         if ( $code && ( $test || $commit ) ) {
 826                 # XXX find columns used in code snippet and show them to user
 827                 my $order = 0;
 828                 foreach my $column ( $code =~ m/\$row->{([^}]+)}/g ) {
 829                         if ( $column =~ s/^(['"])// ) {
 830                                 $column =~ s/$1$//;
 831                         }
 832                         next if $column =~ m/\$/; # hide columns with vars in them
 833                         $commit_changed->{$column} = 0;
 834                 }
 835         }
 836
 837         my $code_path = $self->app->home->rel_dir('public') . "/code";
 838         if ( $commit ) {
 839
 840                 warn "# commit on ", $#$filtered + 1, " items:\n$code\n";
 841                 ( $key, $value, $out ) = ( 'key', 'value' );
 842                 foreach ( 0 .. $#$filtered ) {
 843                         my $i = $filtered->[$_];
 844                         __commit_path_code( $path, $i, $code, \$commit_changed );
 845                 }
 846
 847                 # this might move before $out to recalculate stats on source dataset?
 848                 __path_rebuild_stats( $path );
 849                 my $c = { map { $_ => 1 } @columns };
 850                 my @added_columns = sort grep { ! $c->{$_} } keys %$commit_changed;
 851                 warn "# added_columns ",dump( @added_columns );
 852                 unshift @columns, @added_columns;
 853
 854                 $loaded->{$path}->{columns} = [ @columns ];
 855                 warn "# new columns ",dump( @columns );
 856
 857                 __invalidate_path_column( $path, $_ ) foreach keys %$commit_changed;
 858
 859                 $self->_save_change({
 860                         path => $path,
 861                         time => $self->param('time') || time(),
 862                         user => $self->param('user') || $ENV{'LOGNAME'},
 863                         code => $code,
 864                         commit_changed => $commit_changed,
 865                 });
 866
 867                 if ( my $description = $self->param('code_description') ) {
 868                         my $depends = $self->param('code_depends') || die "no code_depends?";
 869                         my $path = "$code_path/$depends.$description.pl";
 870                         if ( -e $path && ! $self->param('overwrite') ) {
 871                                 warn "# code $path not saved\n";
 872                         } else {
 873                                 write_file(  $path, { binmode => ':utf8' }, "$code\n" );
 874                                 warn "code $path ", -s $path, " bytes saved\n";
 875                         }
 876                 }
 877
 878                 # remove console
 879                 $code = '';
 880                 if ( $out ) {
 881                         my $commit_dataset = join('.'
 882                                 , $self->param('code_depends')
 883                                 , $self->param('code_description')
 884                                 , time()
 885                         );
 886                         $key ||= 'key';
 887                         $value ||= 'value';
 888                         warn "key $key value $value";
 889                         my $items;
 890                         foreach my $n ( keys %$out ) {
 891                                 my $i = { $key => [ $n ] };
 892                                 my $ref = ref $out->{$n};
 893                                 if ( $ref eq 'HASH' ) {
 894                                         $i->{$_} = [ $out->{$n}->{$_} ] foreach keys %{ $out->{$n} };
 895                                 } elsif ( $ref eq 'ARRAY' ) {
 896                                         $i->{$_} = $out->{$n};
 897                                 } elsif ( ! $ref ) {
 898                                         $i->{$value} = [ $out->{$n} ];
 899                                 } else {
 900                                         $i->{_error} = [ dump($out->{$n}) ];
 901                                 }
 902                                 push @$items, $i;
 903                         };
 904                         undef $out;
 905                         my $stats = __stats( $items );
 906                         my @columns = grep { ! m/^\Q$key\E$/ } sort keys %$stats;
 907                         unshift @columns, $key;
 908
 909                         $loaded->{$commit_dataset} = {
 910                                 header => [ @columns ],
 911                                 columns => [ @columns ],
 912                                 mtime => time(),
 913                                 data => { items => $items },
 914                                 stats => $stats,
 915                                 generated => 1,
 916                         };
 917                         warn "# loaded out ", dump( $loaded->{$commit_dataset} );
 918                         $self->session('path', $commit_dataset);
 919                         $self->session('columns', [ @columns ]);
 920                         $self->session('order', $key);
 921                         return $self->redirect_to('/data/items');
 922                 }
 923
 924                 $self->session('columns', [ @columns ]);
 925         }
 926
 927         my $sorted_items;
 928         my $from_end = $sort eq 'd' ? $#$filtered : 0;
 929         my $test_changed;
 930         my ( $key, $value, $out ) = ( 'key', 'value' ); # XXX make local
 931         foreach ( 0 .. $limit ) {
 932                 my $i = $_ + $offset;
 933                 last unless defined $filtered->[$i];
 934                 $i = $from_end - $i if $from_end;
 935                 my $id = $filtered->[$i];
 936                 my $row = Storable::dclone $data->{items}->[ $id ];
 937                 if ( $code && $test ) {
 938                         my $update;
 939                         eval $code;
 940                         if ( $@ ) {
 941                                 warn "ERROR evaling $@", dump($code);
 942                                 $self->stash('eval_error', $@) if $@;
 943                         } else {
 944                                 warn "EVAL ",dump($update);
 945                                 foreach ( keys %$update ) {
 946                                         $test_changed->{$_}++;
 947                                         $row->{$_} = $update->{$_};
 948                                 }
 949                         }
 950                 }
 951                 $row->{_row_id} ||= $id;
 952                 push @$sorted_items, $row;
 953         }
 954
 955         if ( $self->param('export') ) {
 956                 my $export_path = $self->_export_path( 'items', @columns);
 957                 open(my $fh, '>', $export_path) || die "ERROR: can't open $export_path: $!";
 958                 print $fh "#",join("\t",@columns),"\n";
 959                 foreach my $f ( 0 .. $#$filtered ) {
 960                         print $fh join("\t", map {
 961                                 my $i = $data->{items}->[ $filtered->[$f] ];
 962                                 my $v = '\N';
 963                                 if ( ! defined $i->{$_} ) {
 964                                         # nop
 965                                 } elsif ( ref $i->{$_} eq 'ARRAY' ) {
 966                                         $v =join(',', @{ $i->{$_} });
 967                                         $v = '\N' if length($v) == 0;
 968                                 } elsif ( ! ref $i->{$_} ) {
 969                                         $v = $i->{$_};
 970                                 } else {
 971                                         $v = dump $i->{$_};
 972                                 }
 973                                 $v;
 974                         } @columns),"\n";
 975                 }
 976                 close($fh);
 977                 warn "export $export_path ", -s $export_path, " bytes\n";
 978         }
 979
 980         my ( $code_depends, $code_description );
 981
 982         if ( $test ) {
 983
 984                 warn "# test_changed ",dump( $test_changed );
 985                 my $c = { map { $_ => 1 } @columns };
 986                 my @added_columns = sort grep { ! $c->{$_} } keys %$test_changed;
 987                 unshift @columns, @added_columns;
 988
 989                 warn "# sorted_items ", $#$sorted_items + 1, " offset $offset limit $limit order $sort";
 990
 991                 my $depends_on;
 992                 my $tmp = $code; $tmp =~ s/\$row->{(['"]?)([\w\s]+)\1/$depends_on->{$2}++/gse;
 993                 warn "# depends_on ",dump $depends_on;
 994
 995                 my $test_added = Storable::dclone $test_changed;
 996                 delete $test_added->{$_} foreach keys %$depends_on;
 997
 998                 $code_depends = $self->param('code_depends')
 999                 || join(',', keys %$depends_on);
1000
1001                 $code_description = $self->param('code_description') ||
1002                 join(',', keys %$test_added);
1003
1004                 $code_depends ||= $code_description; # self-modifing
1005                 if ( ! $code_depends && $out ) {
1006                         $code_depends = $key;
1007                         $code_description = $value;
1008                 }
1009
1010                 warn "# test_changed ",dump( $test_changed, $code_depends, $code_description );
1011
1012         } # test?
1013
1014         __commit_end;
1015
1016         $self->render(
1017                 order => $order,
1018                 offset => $offset,
1019                 limit => $limit,
1020                 sorted => $sorted_items,
1021                 columns => [ @columns ],
1022                 rows => $#$filtered + 1,
1023                 numeric => { map { $_, $self->_is_numeric($_) } @columns },
1024                 unique  => { map { $_, $self->_is_unique( $_) } @columns },
1025                 filters => $self->_current_filters,
1026                 code => $code,
1027                 cols_changed => $commit ? $commit_changed : $test_changed,
1028                 code_depends => $code_depends,
1029                 code_description => $code_description,
1030                 code_path => $code_path,
1031                 out => $out,
1032         );
1033
1034 }
1035
1036
1037 sub order {
1038         my $self = shift;
1039         $self->session('order', $self->param('order'));
1040         $self->session('sort', $self->param('sort'));
1041         return $self->redirect_to('/data/items');
1042 }
1043
1044 sub _is_numeric {
1045         my ( $self, $name ) = @_;
1046
1047         my $stats = $self->_loaded( 'stats' );
1048
1049         # sort facet numerically if more >50% elements are numeric
1050         my $count = $stats->{$name}->{count};
1051         $count   -= $stats->{$name}->{empty} if defined $stats->{$name}->{empty};
1052         defined $stats->{$name}->{numeric} &&
1053                 $stats->{$name}->{numeric} > $count / 2;
1054 }
1055
1056 sub _is_unique {
1057         my ( $self, $name ) = @_;
1058         my $stats = $self->_loaded( 'stats' );
1059         defined $stats->{$name}->{unique};
1060 }
1061
1062 sub _remove_filter {
1063         my ($self,$name) = @_;
1064         warn "_remove_filter $name\n";
1065
1066         my $path = $self->session('path');
1067
1068         delete $filters->{$name};
1069         delete $loaded->{$path}->{filters}->{$name};
1070         warn "filters left: ", keys %{ $loaded->{$path}->{filters} };
1071
1072         foreach (
1073                         grep { /\Q$name\E/ }
1074                         keys %{ $loaded->{$path}->{filtered} }
1075         ) {
1076                 delete $loaded->{$path}->{filtered}->{$_};
1077                 warn "remove filtered cache $_";
1078         }
1079 }
1080
1081 sub facet {
1082         my $self = shift;
1083
1084         my $path = $self->session('path') || return $self->redirect_to( '/data/index' );
1085
1086         if ( my $name = $self->param('remove') ) {
1087                 $self->_remove_filter( $name );
1088                 return $self->redirect_to( '/data/items' );
1089         }
1090
1091         my $facet;
1092         my $name = $self->param('name') || die "no name";
1093
1094         my $all = $self->_param_scalar('all', 1);
1095         my $data = $self->_loaded('data');
1096
1097         my $filters = $self->_current_filters;
1098         my $all_filters = __all_filters( keys %$filters,$self->session('order') );
1099         my $filtered = $loaded->{$path}->{filtered}->{$all_filters}
1100                 if defined $loaded->{$path}->{filtered}->{$all_filters};
1101
1102         if ( ! $filtered || $all ) {
1103                 $filtered = [ 0 .. $#{ $data->{items} } ];
1104                 warn "filter all values\n";
1105         } else {
1106                 warn "filter using $all_filters\n";
1107         }
1108
1109         foreach my $i ( @$filtered ) {
1110                 my $item = $data->{items}->[$i];
1111                 if ( ! exists $item->{$name} || ! defined $item->{$name} ) {
1112                         $facet->{ _missing }++;
1113                 } elsif ( ref $item->{$name} eq 'ARRAY' ) {
1114                         $facet->{$_}++ foreach @{ $item->{$name} };
1115                 } else {
1116                         $facet->{ $item->{$name} }++;
1117                 }
1118         }
1119
1120         my $checked_values = $self->_checked( @{ $filters->{$name} } ) if defined $filters->{$name};
1121
1122         if ( my $code = $self->param('code') ) {
1123                 my $out;
1124                 foreach my $value ( keys %$facet ) {
1125                         my $count = $facet->{$value};
1126                         my $checked = $checked_values->{$value};
1127                         eval $code;
1128                         if ( $@ ) {
1129                                 $out = $@;
1130                                 warn "ERROR: $@\n$code\n";
1131                                 last;
1132                         } elsif ( $checked != $checked_values->{$value} ) {
1133                                 warn "checked $value $count -> $checked\n";
1134                                 $checked_values->{$value} = $checked;
1135                         }
1136                 }
1137                 warn "out ",dump( $out );
1138                 $self->stash( out => $out );
1139         }
1140
1141 #       warn "# facet $name ",dump $facet;
1142
1143         my @facet_names =
1144                   $all                      ? keys %$facet
1145                 : defined $filters->{$name} ? @{ $filters->{$name} }
1146                 : keys %$facet;
1147
1148         my $numeric = $self->_is_numeric($name);
1149
1150         my $sort = $self->param('sort');
1151         # sort numeric facets with more than 5 values ascending
1152         $sort ||= $numeric && $#facet_names > 4 ? 'a' : 'c';
1153
1154         @facet_names = sort {
1155                 my $result;
1156                 if ( $sort eq 'a' ) {
1157                         $result = $numeric ? $a <=> $b : lc $a cmp lc $b;
1158                 } elsif ( $sort eq 'd' ) {
1159                         $result = $numeric ? $b <=> $a : lc $b cmp lc $a;
1160                 } elsif ( $sort eq 'c' ) {
1161                         $result = ( $facet->{$b} || -1 ) <=> ( $facet->{$a} || -1 )
1162                 } else {
1163                         warn "unknown sort: $sort";
1164                         $result = $a cmp $b;
1165                 }
1166                 $result = $a cmp $b unless defined $result; # FIXME cludge for numeric facets with invalid data
1167                 $result;
1168         } @facet_names;
1169
1170         $self->render( name => $name, facet => $facet, checked => $checked_values,
1171                 facet_names => \@facet_names, sort => $sort, numeric => $numeric,
1172         );
1173 }
1174
1175
1176 sub __invalidate_path_column {
1177         my ( $path, $name ) = @_;
1178
1179         if ( defined $loaded->{$path}->{sorted}->{$name} ) {
1180                 delete $loaded->{$path}->{sorted}->{$name};
1181                 warn "# invalidate $path sorted $name\n";
1182         }
1183
1184         foreach ( grep { m/\Q$name\E/ } keys %{ $loaded->{$path}->{filtered} } ) {
1185                 delete $loaded->{$path}->{filtered}->{$_};
1186                 warn "# invalidate $path filtered $_\n";
1187         }
1188 }
1189
1190 sub __path_modified {
1191         my ( $path, $value ) = @_;
1192         $value = 1 unless defined $value;
1193
1194         $loaded->{$path}->{modified}  = $value;
1195
1196         warn "# __path_modified $path $value\n";
1197 }
1198
1199 sub __path_rebuild_stats { $loaded->{ $_[0] }->{rebuild_stats} = 1 };
1200
1201 sub _save_change {
1202         my ($self,$change) = @_;
1203
1204         my $change_path = $self->_permanent_path( 'changes' );
1205         mkdir $change_path unless -d $change_path;
1206         $change_path .= '/' . $change->{time};
1207         store $change, $change_path;
1208         utime $change->{time}, $change->{time}, $change_path;
1209         warn "_save_change $change_path ", dump($change);
1210 }
1211
1212 sub edit {
1213         my $self = shift;
1214         my $new_content = $self->param('new_content');
1215         $new_content  ||= $self->param('content'); # backward compatibility with old actions
1216
1217         my $i = $self->param('_row_id');
1218         die "invalid _row_id ",dump($i) unless $i =~ m/^\d+$/;
1219         my $path = $self->param('path') || die "no path";
1220         my $name = $self->param('name') || die "no name";
1221         my $status = 200; # 200 = OK, 201 = Created
1222
1223         my $data = $self->_loaded('data');
1224
1225         if ( defined $loaded->{$path}->{data}->{items}->[$i] ) {
1226                 $new_content =~ s/^\s+//s;
1227                 $new_content =~ s/\s+$//s;
1228                 my $v;
1229                 if ( $new_content =~ /\xB6/ ) { # para
1230                         $v = [ split(/\s*\xB6\s*/, $new_content) ];
1231                 } else {
1232                         $v = [ $new_content ];
1233                 }
1234
1235                 my $old = dump $loaded->{$path}->{data}->{items}->[$i]->{$name};
1236                 my $new = dump $v;
1237                 if ( $old ne $new
1238                         && ! ( $old eq 'undef' && length($new_content) == 0 ) # new value empty, previous undef
1239                 ) {
1240                         $self->_save_change({
1241                                 path => $path,
1242                                 column => $name,
1243                                 pos => $i,
1244                                 old => $loaded->{$path}->{data}->{items}->[$i]->{$name},
1245                                 new => $v,
1246                                 time => $self->param('time') || time(),
1247                                 user => $self->param('user') || $ENV{'LOGNAME'},
1248                                 unique => {
1249                                         map { $_ => $loaded->{$path}->{data}->{items}->[$i]->{$_}->[0] }
1250                                         grep { defined $loaded->{$path}->{stats}->{$_}->{unique} }
1251                                         keys %{ $loaded->{$path}->{stats} }
1252                                 },
1253                         });
1254
1255                         warn "# change $path $i $old -> $new\n";
1256                         $loaded->{$path}->{data}->{items}->[$i]->{$name} = $v;
1257
1258                         __invalidate_path_column( $path, $name );
1259
1260                         $status = 201; # created
1261                         __path_rebuild_stats( $path );
1262
1263                         $new_content = join("\xB6",@$v);
1264
1265                 } else {
1266                         warn "# unchanged $path $i $old\n";
1267                         $status = 304;
1268                 }
1269         } else {
1270                 $new_content = "$path $i $name doesn't exist\n";
1271                 $status = 404;
1272         }
1273
1274         warn "# edit $status ", dump $new_content;
1275
1276         $self->render(
1277                 status => $status,
1278                 new_content => scalar $new_content,
1279         );
1280 }
1281
1282
1283 sub save {
1284         my $self = shift;
1285         my $path = $self->_param_or_session('path');
1286         my $dump_path = $self->_save( $path );
1287         __path_modified( $path, 0 );
1288
1289         return $self->redirect_to( '/data/items' );
1290 }
1291
1292 sub export {
1293         my $self = shift;
1294
1295         my $dir = $self->app->home->rel_dir('public');
1296
1297         if ( my $import = $self->param('import') ) {
1298
1299                 if ( $import =~ m{/filter\.(.+?)\..+} ) {
1300                         my $name = $self->_column_from_unac( $1 );
1301
1302                         my @vals = map { chomp; $_ }
1303                                 read_file "$dir/export/$import", binmode => ':utf8';
1304
1305                         $self->_remove_filter( $name );
1306                         $self->_filter_on_data( $name, @vals );
1307                         $self->session( 'offset' => 0 );
1308                         return $self->redirect_to('/data/items');
1309                 } else {
1310                         warn "UNKNOWN IMPORT $import";
1311                 }
1312         }
1313
1314         if ( my $remove = $self->param('remove') ) {
1315                 my $path = "$dir/export/$remove";
1316                 unlink $path if -e $path;
1317                 $path .= '.png';
1318                 unlink $path if -e $path;
1319         }
1320
1321         my $path = $self->_export_path || return $self->redirect_to('/data/index');
1322
1323         my @files = grep { ! /\.png$/ } glob "$path/*";
1324         my $mtime = { map { $_ => (stat($_))[9] } @files };
1325         @files = sort { $mtime->{$b} <=> $mtime->{$a} } @files;
1326         $self->render( export => [ @files ] );
1327 }
1328
1329 sub __loaded_paths {
1330         return
1331                 grep { defined $loaded->{$_}->{data} }
1332                 keys %$loaded;
1333 }
1334
1335 sub remove {
1336         my $self = shift;
1337         my $path = $self->param('path');
1338         if ( $path =~ m{^/tmp/mojo_facets\.} ) {
1339                 unlink $path;
1340                 warn "# unlink $path";
1341                 if ( my $name = $self->param('name') ) {
1342                         delete $loaded->{$name};
1343                         warn "# remove $name from memory";
1344                 }
1345         } else {
1346                 warn "WARNING: $path unlink ignored";
1347         }
1348         return $self->redirect_to( '/data/load' );
1349 }
1350
1351 1;