summaryrefslogtreecommitdiff
path: root/lib/VNDB/DB/Tags.pm
blob: 1104bad8807b62f1485ae88e68b90778a8d67940 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162

package VNDB::DB::Tags;

use strict;
use warnings;
use Exporter 'import';

our @EXPORT = qw|dbTagGet dbTTTree dbTagStats|;


# %options->{ id noid name search state searchable applicable page results what sort reverse  }
# what: parents childs(n) aliases addedby
# sort: id name added items search
sub dbTagGet {
  my $self = shift;
  my %o = (
    page => 1,
    results => 10,
    what => '',
    @_
  );

  $o{search} =~ s/%//g if $o{search};

  my %where = (
    $o{id} ? (
      't.id IN(!l)' => [ ref $o{id} ? $o{id} : [$o{id}] ] ) : (),
    $o{noid} ? (
      't.id <> ?' => $o{noid} ) : (),
    $o{name} ? (
      't.id = (SELECT id FROM tags LEFT JOIN tags_aliases ON id = tag WHERE lower(name) = ? OR lower(alias) = ? LIMIT 1)' => [ lc $o{name}, lc $o{name} ]) : (),
    defined $o{state} && $o{state} != -1 ? (
      't.state = ?' => $o{state} ) : (),
    !defined $o{state} && !$o{id} && !$o{name} ? (
      't.state <> 1' => 1 ) : (),
    $o{search} ? (
      't.id IN (SELECT id FROM tags LEFT JOIN tags_aliases ON id = tag WHERE name ILIKE ? OR alias ILIKE ?)' => [ "%$o{search}%", "%$o{search}%" ] ) : (),
    defined $o{searchable} ? ('t.searchable = ?' => $o{searchable}?1:0 ) : (),
    defined $o{applicable} ? ('t.applicable = ?' => $o{applicable}?1:0 ) : (),
  );
  my @select = (
    qw|t.id t.searchable t.applicable t.name t.description t.state t.cat t.c_items t.defaultspoil|,
    q|extract('epoch' from t.added) as added|,
    $o{what} =~ /addedby/ ? (VNWeb::DB::sql_user()) : (),
  );
  my @join = $o{what} =~ /addedby/ ? 'JOIN users u ON u.id = t.addedby' : ();

  my $order = sprintf {
    id    => 't.id %s',
    name  => 't.name %s',
    added => 't.added %s',
    items => 't.c_items %s',
    search=> 'substr_score(t.name, ?) ASC, t.name %s',  # Assigning a matching score for aliases is also possible, but more involved
  }->{ $o{sort}||'id' }, $o{reverse} ? 'DESC' : 'ASC';
  my @order = $o{sort} && $o{sort} eq 'search' ? ($o{search}) : ();


  my($r, $np) = $self->dbPage(\%o, qq|
    SELECT !s
      FROM tags t
      !s
      !W
      ORDER BY $order|,
    join(', ', @select), join(' ', @join), \%where, @order
  );

  if(@$r && $o{what} =~ /aliases/) {
    my %r = map {
      $_->{aliases} = [];
      ($_->{id}, $_->{aliases})
    } @$r;

    push @{$r{$_->{tag}}}, $_->{alias} for (@{$self->dbAll(q|
      SELECT tag, alias FROM tags_aliases WHERE tag IN(!l)|, [ keys %r ]
    )});
  }

  if($o{what} =~ /parents\((\d+)\)/) {
    $_->{parents} = $self->dbTTTree(tag => $_->{id}, $1, 1) for(@$r);
  }

  if($o{what} =~ /childs\((\d+)\)/) {
    $_->{childs} = $self->dbTTTree(tag => $_->{id}, $1) for(@$r);
  }

  return wantarray ? ($r, $np) : $r;
}


# Walks the tag/trait tree
#  type = tag | trait
#  id = tag to start with, or 0 to start with top-level tags
#  lvl = max. recursion level
#  back = false for parent->child, true for child->parent
# Returns: [ { id, name, c_items, sub => [ { id, name, c_items, sub => [..] }, .. ] }, .. ]
sub dbTTTree {
  my($self, $type, $id, $lvl, $back) = @_;
  $lvl ||= 15;
  my $xtra = $type eq 'trait' ? ', "order"' : '';
  my $xtra2 = $type eq 'trait' ? ', t."order"' : '';
  my $r = $self->dbAll(qq|
    WITH RECURSIVE thetree(lvl, id, parent, name, c_items) AS (
        SELECT ?::integer, id, 0, name, c_items$xtra
        FROM ${type}s
        !W
      UNION ALL
        SELECT tt.lvl-1, t.id, tt.id, t.name, t.c_items$xtra2
        FROM thetree tt
        JOIN ${type}s_parents tp ON !s
        JOIN ${type}s t ON !s
        WHERE tt.lvl > 0
          AND t.state = 2
    ) SELECT DISTINCT id, parent, name, c_items$xtra FROM thetree ORDER BY name|, $lvl,
    $id ? {'id = ?' => $id} : {"NOT EXISTS(SELECT 1 FROM ${type}s_parents WHERE $type = id)" => 1, 'state = 2' => 1},
    !$back ? ('tp.parent = tt.id', "t.id = tp.$type") : ("tp.$type = tt.id", 't.id = tp.parent')
  );

  my %pars; # parent-id -> [ child-object, .. ]
  push @{$pars{$_->{parent}}}, $_ for(@$r);
  $_->{'sub'} = $pars{$_->{id}} || [] for(@$r);
  my @r = grep !delete($_->{parent}), @$r;
  return $id ? $r[0]{'sub'} : \@r;
}


# Fetch all tags related to a VN
# Argument: %options->{ vid minrating state results what page sort reverse }
# sort: name, rating
sub dbTagStats {
  my($self, %o) = @_;
  $o{results} ||= 10;
  $o{page}  ||= 1;

  my $rating = 'avg(CASE WHEN tv.ignore THEN NULL ELSE tv.vote END)';
  my $order = sprintf {
    name => 't.name %s',
    rating => "$rating %s",
  }->{ $o{sort}||'name' }, $o{reverse} ? 'DESC' : 'ASC';

  my %where = (
      'tv.vid = ?' => $o{vid},
      defined $o{state} ? ('t.state = ?', $o{state}) : (),
  );

  my($r, $np) = $self->dbPage(\%o, qq|
    SELECT t.id, t.name, t.cat, count(*) as cnt, $rating as rating,
        COALESCE(avg(CASE WHEN tv.ignore THEN NULL ELSE tv.spoiler END), t.defaultspoil) as spoiler,
        bool_or(tv.ignore) AS overruled
      FROM tags t
      JOIN tags_vn tv ON tv.tag = t.id
      !W
      GROUP BY t.id, t.name, t.cat
      !s
      ORDER BY !s|,
    \%where, defined $o{minrating} ? "HAVING $rating > $o{minrating}" : '', $order
  );

  return wantarray ? ($r, $np) : $r;
}

1;