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 JSON;
  11 use Encode;
  12 use locale;
  13 use File::Find;
  14 use Storable;
  15
  16 our $loaded;
  17 our $filters;
  18
  19 sub index {
  20         my $self = shift;
  21
  22         my $path = $self->app->home->rel_dir('data');
  23         die "no data dir $path" unless -d $path;
  24
  25         my @files;
  26         my $changes;
  27         find( sub {
  28                 my $file = $File::Find::name;
  29                 if ( -f $file && $file =~ m/\.(js(on)?|txt)$/ ) {
  30                         $file =~ s/$path\/*//;
  31                         push @files, $file;
  32                 } elsif ( -f $file && $file =~ m/([^\/]+)\.changes\/(\d+\.\d+.+)/ ) {
  33                         push @{ $changes->{$1} }, $2
  34                 } else {
  35                         warn "IGNORE: $file\n";
  36                 }
  37         }, $path);
  38
  39         @files = sort { lc $a cmp lc $b } @files;
  40         my $size;
  41         $size->{$_} = -s "$path/$_" foreach @files;
  42
  43         if ( my $save_path = $self->session('save_path') ) {
  44                 $self->session( 'save_path' => 0 )
  45                 if ! defined $loaded->{$save_path};
  46         }
  47
  48         $self->render(
  49                 files => [ @files ],
  50                 size => $size,
  51                 loaded => $loaded,
  52                 filters => $filters,
  53                 dump_path => { map { $_ => $self->_dump_path($_) } @files },
  54                 changes => $changes,
  55         );
  56 }
  57
  58 sub _dump_path {
  59         my ( $self, $name ) = @_;
  60         my $dir = $self->app->home->rel_dir('data');
  61         $name =~ s/^$dir//;
  62         $name =~ s/\/+/_/g;
  63         return '/tmp/mojo_facets.' . $name . '.storable';
  64 }
  65
  66 sub _save {
  67         my ( $self, $path ) = @_;
  68
  69         my $dump_path = $self->_dump_path( $path );
  70         warn "save loaded to $dump_path";
  71         my $info = $loaded->{$path};
  72         store $info, $dump_path;
  73
  74         # sync timestamp
  75         #my $mtime = $loaded->{$path}->{mtime};
  76         #utime $mtime, $mtime, $dump_path;
  77
  78         warn $dump_path, ' ', -s $dump_path, " bytes\n";
  79         return $dump_path;
  80 }
  81
  82 sub _load_path {
  83         my ( $self, $path ) = @_;
  84
  85         my $full_path = $self->app->home->rel_file( 'data/' . $path );
  86         die "$full_path $!" unless -r $full_path;
  87
  88         my $dump_path = $self->_dump_path( $path );
  89
  90         if ( defined $loaded->{$path}->{data} ) {
  91                 my $mtime = (stat($full_path))[9];
  92                 return if $loaded->{$path}->{mtime} == $mtime;
  93                 warn "reload $full_path, modified ", time() - $mtime, " seconds ago\n";
  94         } elsif ( -e $dump_path ) {
  95                 warn "dump_path $dump_path ", -s $dump_path, " bytes loading...\n";
  96                 my $info = retrieve $dump_path;
  97                 $loaded->{ $path } = $info;
  98                 return;
  99         }
 100
 101         # we could use Mojo::JSON here, but it's too slow
 102 #       $data = from_json read_file $path;
 103         my $data = read_file $full_path;
 104         warn "# data snippet: ", substr($data,0,200);
 105         my @header;
 106         if ( $path =~ m/\.js/ ) {
 107                 Encode::_utf8_on($data);
 108                 $data = from_json $data;
 109         } elsif ( $path =~ m/\.txt/ ) {
 110                 my @lines = split(/\r?\n/, $data);
 111                 $data = { items => [] };
 112
 113                 my $header_line = shift @lines;
 114                 my $multiline = $header_line =~ s/\^//g;
 115                 @header = split(/\|/, $header_line );
 116                 warn "# header ", dump( @header );
 117                 while ( my $line = shift @lines ) {
 118                         $line =~ s/\^//g;
 119                         chomp $line;
 120                         my @v = split(/\|/, $line);
 121                         while ( @lines && $#v < $#header ) {
 122                                 $line = $lines[0];
 123                                 $line =~ s/\^//g;
 124                                 chomp $line;
 125                                 my @more_v = split(/\|/, $line);
 126                                 if ( $#v + $#more_v > $#header ) {
 127                                         warn "short line: ",dump( @v );
 128                                         last;
 129                                 }
 130                                 shift @lines;
 131                                 $v[ $#v ] .= shift @more_v if @more_v;
 132                                 push @v, @more_v if @more_v;
 133
 134                                 if ( $#v > $#header ) {
 135                                         die "# splice $#header ", dump( @v );
 136                                         @v = splice @v, 0, $#header;
 137                                 }
 138                         }
 139                         my $item;
 140                         foreach my $i ( 0 .. $#v ) {
 141                                 $item->{ $header[$i] || "f_$i" } = [ $v[$i] ];
 142                         }
 143                         push @{ $data->{items} }, $item;
 144                 }
 145         } else {
 146                 warn "file format unknown $path";
 147         }
 148
 149         my $stats;
 150
 151         foreach my $e ( @{ $data->{items} } ) {
 152                 foreach my $n ( keys %$e ) {
 153                         $stats->{$n}->{count}++;
 154                         my @v;
 155                         if ( ref $e->{$n} eq 'ARRAY' ) {
 156                                 $stats->{$n}->{array} += $#{ $e->{$n} } + 1;
 157                                 @v = @{ $e->{$n} };
 158                         } else {
 159                                 @v = ( $e->{$n} );
 160                         }
 161
 162                         foreach my $x ( @v ) {
 163                                 $stats->{$n}->{numeric}++
 164                                         if $x =~ m/^[-+]?([0-9]*\.[0-9]+|[0-9]+)$/;
 165                                 $stats->{$n}->{empty}++
 166                                         if length $x == 0; # faster than $x =~ m/^\s*$/;
 167                         }
 168
 169                 }
 170         }
 171
 172         foreach my $n ( keys %$stats ) {
 173                 next unless defined $stats->{$n}->{array};
 174                 delete $stats->{$n}->{array}
 175                         if $stats->{$n}->{array} == $stats->{$n}->{count};
 176         }
 177
 178         if ( ! @header ) {
 179                 if ( defined $data->{header} ) {
 180                         if ( ref $data->{header} eq 'ARRAY' ) {
 181                                 @header = @{ $data->{header} };
 182                         } else {
 183                                 warn "header not array ", dump( $data->{header} );
 184                         }
 185                 }
 186         }
 187
 188         @header =
 189                 sort { $stats->{$b}->{count} <=> $stats->{$a}->{count} }
 190                 grep { defined $stats->{$_}->{count} } keys %$stats
 191                 unless @header;
 192
 193         warn dump($stats);
 194
 195         my $info = {
 196                 header => [ @header ],
 197                 stats  => $stats,
 198                 full_path => $full_path,
 199                 size => -s $full_path,
 200                 mtime => (stat($full_path))[9],
 201                 data => $data,
 202         };
 203
 204         $loaded->{ $path } = $info;
 205         $self->_save( $path );
 206
 207 }
 208
 209
 210 sub load {
 211         my $self = shift;
 212
 213         my @paths = $self->param('paths');
 214         warn "# paths ", dump @paths;
 215         $self->_load_path( $_ ) foreach @paths;
 216
 217         my $path = $self->param('path') || $self->redirect_to( '/data/index' );
 218         warn "# path $path\n";
 219         $self->session('path' => $path);
 220         $self->_load_path( $path );
 221
 222         $self->session( 'header' => $loaded->{$path}->{header} );
 223         if ( ! defined $loaded->{$path}->{columns} ) {
 224                 $self->session( 'columns' => $loaded->{$path}->{header} );
 225                 $self->session( 'order'   => $loaded->{$path}->{header}->[0] );
 226                 $self->redirect_to( '/data/columns' );
 227         } else {
 228                 $self->session( 'columns' => $loaded->{$path}->{columns} );
 229                 $self->session( 'order'   => $loaded->{$path}->{columns}->[0] );
 230                 $self->redirect_to( '/data/items' );
 231         }
 232 }
 233
 234
 235 sub _loaded {
 236         my ( $self, $name ) = @_;
 237         my $path = $self->session('path');
 238         $self->redirect_to('/data/index') unless $path;
 239         if ( ! defined $loaded->{$path}->{$name} ) {
 240                 warn "$path $name isn't loaded\n";
 241                 $self->_load_path( $path );
 242                 $self->redirect_to('/data/index')
 243                         unless defined $loaded->{$path}->{$name};
 244         }
 245         return $loaded->{$path}->{$name};
 246 }
 247
 248
 249 sub _checked {
 250         my $self = shift;
 251         my $checked;
 252         $checked->{$_}++ foreach @_;
 253 #       warn "# _checked ",dump($checked);
 254         return $checked;
 255 }
 256
 257
 258 sub columns {
 259     my $self = shift;
 260
 261         if ( $self->param('columns') ) {
 262                 $self->_perm_array('columns');
 263                 $self->redirect_to('/data/items');
 264         }
 265
 266         my $stats = $self->_loaded( 'stats' ); # || $self->redirect_to( '/data/index' );
 267
 268         my @columns;
 269         @columns = grep { defined $stats->{$_}->{count} } @{ $self->session('columns') } if $self->session('columns');
 270
 271         foreach my $c ( @{ $self->session( 'header' ) } ) {
 272                 push @columns, $c unless grep { /^\Q$c\E$/ } @columns;
 273         }
 274
 275     $self->render(
 276                 message => 'Select columns to display',
 277                 stats => $stats,
 278                 columns => \@columns,
 279                 checked => $self->_checked( $self->_perm_array('columns') ),
 280         );
 281 }
 282
 283 sub _perm_array {
 284     my ($self,$name) = @_;
 285
 286         my @array = $self->param($name);
 287         my $path  = $self->session('path');
 288
 289         if ( @array ) {
 290                 $self->session($name => [ @array ]);
 291                 $loaded->{$path}->{$name} = [ @array ];
 292         } elsif ( my $session = $self->session($name) ) {
 293                 if ( ref $session eq 'ARRAY' ) {
 294                         @array = @$session;
 295                 } else {
 296                         die "$name not array ",dump($session);
 297                 }
 298         }
 299         #warn "# $name ",dump @array;
 300         return @array;
 301 }
 302
 303 sub _perm_scalar {
 304     my ($self,$name,$default) = @_;
 305
 306         my $scalar = $self->param($name);
 307
 308         if ( defined $scalar ) {
 309                 $self->session($name => $scalar);
 310         } else {
 311                 $scalar = $self->session($name);
 312         }
 313
 314         if ( ! defined $scalar ) {
 315                 $scalar = $default;
 316                 die "no default for $name" unless defined $scalar;
 317                 $self->session($name => $scalar);
 318         }
 319
 320         warn "# _perm_scalar $name ",dump $scalar;
 321         return $scalar;
 322 }
 323
 324 sub filter {
 325         my $self = shift;
 326
 327         my $name = $self->param('filter_name') || die "name?";
 328         my @vals = $self->param('filter_vals');
 329
 330         $self->_remove_filter( $name );
 331         $self->_filter_on_data( $name, @vals ) if @vals;
 332
 333         $self->session( 'offset' => 0 );
 334
 335         $self->redirect_to('/data/items');
 336 }
 337
 338 sub _filter_on_data {
 339         my ( $self, $name, @vals ) = @_;
 340
 341         my $path = $self->session('path');
 342
 343         if ( ! defined $loaded->{$path}->{stats}->{ $name } ) {
 344                 warn "filter $name not found in data set";
 345                 return;
 346         }
 347
 348         $filters->{$name} = [ @vals ];
 349         warn "_filter_on_data $name ", $#vals + 1, " values on $path\n";
 350
 351         my $filter_hash;
 352         $filter_hash->{$_}++ foreach @vals;
 353
 354         #warn "# filter_hash ",dump( $filter_hash );
 355
 356         my $items = $self->_loaded('data')->{items};
 357
 358         my $include_missing = defined $filter_hash->{_missing};
 359         my $filtered_items;
 360
 361         foreach my $i ( 0 .. $#$items ) {
 362
 363                 if ( defined $items->[$i]->{$name} ) {
 364                         foreach my $v ( @{ $items->[$i]->{$name} } ) {
 365                                 if ( defined $filter_hash->{ $v } ) {
 366                                         $filtered_items->{$i}++;
 367                                 }
 368                         }
 369                 } elsif ( $include_missing ) {
 370                         $filtered_items->{$i}++;
 371                 }
 372         }
 373
 374         #warn "# filter $name ",dump($filtered_items);
 375
 376         $loaded->{$path}->{filters}->{$name} = $filtered_items;
 377         warn "filter $name with ", scalar keys %$filtered_items, " items created\n";
 378 }
 379
 380 sub _data_items {
 381         my ( $self, $all ) = @_;
 382         my $data = $self->_loaded( 'data' );
 383
 384         return @{ $data->{items} } if $all == 1;
 385
 386         my $filters = $self->_current_filters;
 387         my $filter_value;
 388         foreach my $f ( keys %$filters ) {
 389                 foreach my $n ( @{ $filters->{$f} } ) {
 390                         $filter_value->{$f}->{$n} = 1;
 391                 }
 392         }
 393         my @items = @{ $data->{items} };
 394         @items = grep {
 395                 my $i = $_;
 396                 my $pass = 1;
 397                 foreach my $n ( keys %$filter_value ) {
 398                         if ( ! exists $i->{$n} ) {
 399                                 if ( defined $filter_value->{$n}->{_missing} ) {
 400                                         $pass = 1;
 401                                         next;
 402                                 } else {
 403                                         $pass = 0;
 404                                         last;
 405                                 }
 406                         }
 407                         # and match any of values in element
 408                         my $have_values = 0;
 409                         foreach my $v ( @{ $i->{$n} } ) { # FIXME not array?
 410                                 $have_values ||= 1 if defined $filter_value->{$n}->{$v};
 411                         }
 412                         if ( ! $have_values ) {
 413                                 $pass = 0;
 414                                 last;
 415                         }
 416                 }
 417                 $pass;
 418         } @items if $filter_value;
 419         return @items;
 420 }
 421
 422
 423 sub _current_filters {
 424         my $self = shift;
 425         my $current_filters;
 426         $current_filters->{ $_ } = $filters->{ $_ }
 427                 foreach (
 428                         grep { defined $filters->{ $_ } }
 429                         @{ $self->_loaded('header') }
 430                 );
 431         #warn "# current_filters ",dump($current_filters);
 432         return $current_filters;
 433 }
 434
 435 sub _data_sorted_by {
 436         my ( $self, $order ) = @_;
 437
 438         my $path = $self->session('path');
 439
 440         warn "_data_sorted_by $order from $path";
 441
 442         if ( defined $loaded->{$path}->{sorted}->{$order} ) {
 443                 return $loaded->{$path}->{sorted}->{$order};
 444         }
 445
 446         my $data = $self->_loaded( 'data' );
 447         my $numeric = $self->_is_numeric($order);
 448         my $missing = $numeric ? 0 : '';
 449         no warnings qw(numeric);
 450         my $nr = 0;
 451         my @sorted = map {
 452                 $_->[0]
 453         } sort {
 454                 if ( $numeric ) {
 455                         $a->[1] <=> $b->[1]
 456                 } else {
 457                         $a->[1] cmp $b->[1]
 458                 }
 459         } map {
 460                 [ $nr++, exists $_->{$order} ? join('', @{$_->{$order}}) : $missing ]
 461         } @{ $data->{items} }
 462         ;
 463
 464         warn "sorted: $order numeric: $numeric items: ", $#sorted + 1, "\n";
 465         #warn "# sorted ",dump( @sorted );
 466
 467         $loaded->{$path}->{sorted}->{$order} = [ @sorted ];
 468 }
 469
 470
 471 sub items {
 472         my $self = shift;
 473
 474         my $path = $self->session('path');
 475         $self->redirect_to('/data/index') unless defined $loaded->{ $path };
 476
 477         my @columns = $self->_perm_array('columns');
 478         $self->redirect_to('/data/columns') unless @columns;
 479         my $order   = $self->_perm_scalar('order', $columns[0]);
 480         my $sort    = $self->_perm_scalar('sort', 'a');
 481         my $offset  = $self->_perm_scalar('offset', 0);
 482         my $limit   = $self->_perm_scalar('limit', 20);
 483         $self->_perm_scalar('show', 'table');
 484
 485         # fix offset when changing limit
 486         $offset = int( $offset / $limit ) * $limit;
 487
 488         my $sorted = $self->_data_sorted_by( $order );
 489
 490         my @filter_names;
 491         if ( $filters ) {
 492                 foreach my $name ( keys %$filters ) {
 493                         if ( ! defined $loaded->{$path}->{stats}->{ $name } ) {
 494                                 warn "skip filter $name not found in $path\n";
 495                                 next;
 496                         }
 497                         push @filter_names, $name;
 498                 }
 499                 warn "filter_names ",dump( @filter_names );
 500                 foreach my $name ( @filter_names ) {
 501                         next if ref $loaded->{$path}->{filters}->{$name} eq 'ARRAY';
 502                         $self->_filter_on_data( $name, @{ $filters->{$name} } );
 503                 }
 504         }
 505
 506         my $all_filters = join(' ',sort @filter_names,'order:',$order);
 507
 508 #       warn "# all_filters $all_filters ", dump( $loaded->{$path}->{filtered}->{$all_filters} );
 509
 510         if ( ! defined $loaded->{$path}->{filtered}->{$all_filters} ) {
 511
 512                 my $path_filters = $loaded->{$path}->{filters};
 513
 514                 warn "create combined filter for $all_filters\n";
 515
 516                 my @filtered;
 517                 foreach my $i ( 0 .. $#$sorted ) {
 518                         my $pos = $sorted->[$i];
 519
 520                         if ( $#filter_names == -1 ) {
 521                                 push @filtered, $pos;
 522                                 next;
 523                         }
 524
 525                         my $skip = 0;
 526                         foreach ( @filter_names ) {
 527                                 $skip ||= 1 if ! defined $path_filters->{$_}->{$pos};
 528                         }
 529                         next if $skip;
 530
 531                         push @filtered, $pos;
 532                 }
 533
 534                 $loaded->{$path}->{filtered}->{$all_filters} = [ @filtered ];
 535         }
 536
 537         my $filtered = $loaded->{$path}->{filtered}->{$all_filters}
 538                 if defined $loaded->{$path}->{filtered}->{$all_filters};
 539
 540         warn "all_filters $all_filters produced ", $#$filtered + 1, " items\n" if $filtered;
 541
 542         my $sorted_items;
 543         my $data = $self->_loaded('data');
 544         my $from_end = $sort eq 'd' ? $#$filtered : 0;
 545         foreach ( 0 .. $limit ) {
 546                 my $i = $_ + $offset;
 547                 last unless defined $filtered->[$i];
 548                 $i = $from_end - $i if $from_end;
 549                 my $id = $filtered->[$i];
 550                 push @$sorted_items,
 551                 my $item = $data->{items}->[ $id ];
 552                 $item->{_row_id} ||= $id;
 553         }
 554
 555         warn "# sorted_items ", $#$sorted_items + 1, " offset $offset limit $limit order $sort";
 556
 557         $self->render(
 558                 order => $order,
 559                 offset => $offset,
 560                 limit => $limit,
 561                 sorted => $sorted_items,
 562                 columns => [ @columns ],
 563                 rows => $#$filtered + 1,
 564                 numeric => { map { $_, $self->_is_numeric($_) } @columns },
 565                 filters => $self->_current_filters,
 566         );
 567
 568 }
 569
 570
 571 sub order {
 572         my $self = shift;
 573         $self->session('order', $self->param('order'));
 574         $self->session('sort', $self->param('sort'));
 575         $self->redirect_to('/data/items');
 576 }
 577
 578 sub _is_numeric {
 579         my ( $self, $name ) = @_;
 580
 581         my $stats = $self->_loaded( 'stats' );
 582
 583         # sort facet numerically if more >50% elements are numeric
 584         my $count = $stats->{$name}->{count};
 585         $count   -= $stats->{$name}->{empty} if defined $stats->{$name}->{empty};
 586         defined $stats->{$name}->{numeric} &&
 587                 $stats->{$name}->{numeric} > $count / 2;
 588 }
 589
 590 sub _remove_filter {
 591         my ($self,$name) = @_;
 592         warn "_remove_filter $name\n";
 593
 594         my $path = $self->session('path');
 595
 596         delete $filters->{$name};
 597         delete $loaded->{$path}->{filters}->{$name};
 598         warn "filters left: ", keys %{ $loaded->{$path}->{filters} };
 599
 600         foreach (
 601                         grep { /\b$name\b/ }
 602                         keys %{ $loaded->{$path}->{filtered} }
 603         ) {
 604                 delete $loaded->{$path}->{filtered}->{$_};
 605                 warn "remove filtered cache $_";
 606         }
 607 }
 608
 609 sub facet {
 610         my $self = shift;
 611
 612         my $path = $self->session('path') || $self->redirect_to( '/data/index' );
 613
 614         if ( my $name = $self->param('remove') ) {
 615                 $self->_remove_filter( $name );
 616                 $self->redirect_to( '/data/items' );
 617         }
 618
 619         my $facet;
 620         my $name = $self->param('name') || die "no name";
 621
 622         my $all = $self->_perm_scalar('all', 1);
 623         my $data = $self->_loaded('data');
 624
 625         my $filters = $self->_current_filters;
 626         my $all_filters = join(' ',sort keys %$filters,'order:',$self->session('order'));
 627         my $filtered = $loaded->{$path}->{filtered}->{$all_filters}
 628                 if defined $loaded->{$path}->{filtered}->{$all_filters};
 629
 630         if ( ! $filtered || $all ) {
 631                 $filtered = [ 0 .. $#{ $data->{items} } ];
 632                 warn "filter all values\n";
 633         } else {
 634                 warn "filter using $all_filters\n";
 635         }
 636
 637         foreach my $i ( @$filtered ) {
 638                 my $item = $data->{items}->[$i];
 639                 if ( ! exists $item->{$name} ) {
 640                         $facet->{ _missing }++;
 641                 } elsif ( ref $item->{$name} eq 'ARRAY' ) {
 642                         $facet->{$_}++ foreach @{ $item->{$name} };
 643                 } else {
 644                         $facet->{ $item->{$name} }++;
 645                 }
 646         }
 647
 648 #       warn "# facet $name ",dump $facet;
 649
 650         my $checked;
 651         my @facet_names =
 652                   $all                      ? keys %$facet
 653                 : defined $filters->{$name} ? @{ $filters->{$name} }
 654                 : keys %$facet;
 655
 656         $checked = $self->_checked( @{ $filters->{$name} } ) if defined $filters->{$name};
 657
 658         my $numeric = $self->_is_numeric($name);
 659
 660         my $sort = $self->param('sort');
 661         # sort numeric facets with more than 5 values ascending
 662         $sort ||= $numeric && $#facet_names > 4 ? 'a' : 'c';
 663
 664         @facet_names = sort {
 665                 my $result;
 666                 if ( $sort eq 'a' ) {
 667                         $result = $numeric ? $a <=> $b : lc $a cmp lc $b;
 668                 } elsif ( $sort eq 'd' ) {
 669                         $result = $numeric ? $b <=> $a : lc $b cmp lc $a;
 670                 } elsif ( $sort eq 'c' ) {
 671                         $result = ( $facet->{$b} || -1 ) <=> ( $facet->{$a} || -1 )
 672                 } else {
 673                         warn "unknown sort: $sort";
 674                         $result = $a cmp $b;
 675                 }
 676                 $result = $a cmp $b unless defined $result; # FIXME cludge for numeric facets with invalid data
 677                 $result;
 678         } @facet_names;
 679
 680         $self->render( name => $name, facet => $facet, checked => $checked,
 681                 facet_names => \@facet_names, sort => $sort, numeric => $numeric,
 682         );
 683 }
 684
 685 sub edit {
 686         my $self = shift;
 687         my $content = $self->param('content');
 688
 689         my $i = $self->param('_row_id');
 690         die "invalid _row_id ",dump($i) unless $i =~ m/^\d+$/;
 691         my $path = $self->param('path') || die "no path";
 692         my $name = $self->param('name') || die "no name";
 693         my $status = 200; # 200 = OK, 201 = Created
 694
 695         my $data = $self->_loaded('data');
 696
 697         if ( defined $loaded->{$path}->{data}->{items}->[$i] ) {
 698                 $content =~ s/^\s+//s;
 699                 $content =~ s/\s+$//s;
 700                 my $v;
 701                 if ( $content =~ /\xB6/ ) {     # para
 702                         $v = [ split(/\s*\xB6\s*/, $content) ];
 703                 } else {
 704                         $v = [ $content ];
 705                 }
 706
 707                 my $old = dump $loaded->{$path}->{data}->{items}->[$i]->{$name};
 708                 my $new = dump $v;
 709                 if ( $old ne $new
 710                         && ! ( $old eq 'undef' && length($content) == 0 ) # new value empty, previous undef
 711                 ) {
 712                         warn "# update $path $i $old -> $new\n";
 713                         $loaded->{$path}->{data}->{items}->[$i]->{$name} = $v;
 714
 715                         if ( defined $loaded->{$path}->{sorted}->{$name} ) {
 716                             delete $loaded->{$path}->{sorted}->{$name};
 717                                 warn "# invalidate $path sorted $name\n";
 718                         }
 719
 720                         foreach ( grep { m/$name/ } keys %{ $loaded->{$path}->{filtered} } ) {
 721                             delete $loaded->{$path}->{filtered}->{$_};
 722                                 warn "# invalidate $path filtered $_\n";
 723                         }
 724
 725                         $status = 201; # created
 726                         $self->session('save_path' => $path);
 727
 728                 } else {
 729                         warn "# unchanged $path $i $old\n";
 730                         $status = 304;
 731                 }
 732         } else {
 733                 $content = "$path $i $name doesn't exist\n";
 734                 $status = 404;
 735         }
 736
 737         warn "# edit $status $content";
 738
 739         $self->render(
 740                 status => $status,
 741                 content => $content,
 742         );
 743 }
 744
 745
 746 sub save {
 747         my $self = shift;
 748         my $path = $self->param('path');
 749         $path  ||= $self->session('path');
 750
 751         my $dump_path = $self->_save( $path );
 752         $self->session('save_path' => 0);
 753
 754         $self->redirect_to( '/data/items' );
 755 }
 756
 757 1;