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