#
# Displays search results for the web interface
package PublicInbox::SearchView;
use strict;
use warnings;
use URI::Escape qw(uri_unescape uri_escape);
use PublicInbox::SearchMsg;
use PublicInbox::Hval qw/ascii_html obfuscate_addrs/;
use PublicInbox::View;
use PublicInbox::WwwAtomStream;
use PublicInbox::MID qw(MID_ESC);
use PublicInbox::MIME;
require PublicInbox::Git;
require PublicInbox::SearchThread;
our $LIM = 200;
sub noop {}
sub mbox_results {
my ($ctx) = @_;
my $q = PublicInbox::SearchQuery->new($ctx->{qp});
my $x = $q->{x};
require PublicInbox::Mbox;
return PublicInbox::Mbox::mbox_all($ctx, $q->{'q'}) if $x eq 'm';
sres_top_html($ctx);
}
sub sres_top_html {
my ($ctx) = @_;
my $srch = $ctx->{-inbox}->search or
return PublicInbox::WWW::need($ctx, 'Search');
my $q = PublicInbox::SearchQuery->new($ctx->{qp});
my $x = $q->{x};
my $query = $q->{'q'};
my $o = $q->{o};
my $asc;
if ($o < 0) {
$asc = 1;
$o = -($o + 1); # so [-1] is the last element, like Perl lists
}
my $code = 200;
# double the limit for expanded views:
my $opts = {
limit => $q->{l},
offset => $o,
mset => 1,
relevance => $q->{r},
asc => $asc,
};
my ($mset, $total, $err, $cb);
retry:
eval {
$mset = $srch->query($query, $opts);
$total = $mset->get_matches_estimated;
};
$err = $@;
ctx_prepare($q, $ctx);
if ($err) {
$code = 400;
$ctx->{-html_tip} = ''.err_txt($ctx, $err).' ';
$cb = *noop;
} elsif ($total == 0) {
if (defined($ctx->{-uxs_retried})) {
# undo retry damage:
$q->{'q'} = $ctx->{-uxs_retried};
} elsif (index($q->{'q'}, '%') >= 0) {
$ctx->{-uxs_retried} = $q->{'q'};
$q->{'q'} = uri_unescape($q->{'q'});
goto retry;
}
$code = 404;
$ctx->{-html_tip} = "\n[No results found] ";
$cb = *noop;
} else {
return adump($_[0], $mset, $q, $ctx) if $x eq 'A';
$ctx->{-html_tip} = search_nav_top($mset, $q, $ctx);
if ($x eq 't') {
$cb = mset_thread($ctx, $mset, $q);
} else {
$cb = mset_summary($ctx, $mset, $q);
}
}
PublicInbox::WwwStream->response($ctx, $code, $cb);
}
# allow undef for individual doc loads...
sub load_doc_retry {
my ($srch, $mitem) = @_;
eval {
$srch->retry_reopen(sub {
PublicInbox::SearchMsg->load_doc($mitem->get_document)
});
}
}
# display non-nested search results similar to what users expect from
# regular WWW search engines:
sub mset_summary {
my ($ctx, $mset, $q) = @_;
my $total = $mset->get_matches_estimated;
my $pad = length("$total");
my $pfx = ' ' x $pad;
my $res = \($ctx->{-html_tip});
my $ibx = $ctx->{-inbox};
my $srch = $ibx->search;
my $obfs_ibx = $ibx->{obfuscate} ? $ibx : undef;
foreach my $m ($mset->items) {
my $rank = sprintf("%${pad}d", $m->get_rank + 1);
my $pct = $m->get_percent;
my $smsg = load_doc_retry($srch, $m);
unless ($smsg) {
eval {
$m = "$m ".$m->get_docid . " expired\n";
$ctx->{env}->{'psgi.errors'}->print($m);
};
next;
}
my $s = ascii_html($smsg->subject);
my $f = ascii_html($smsg->from_name);
if ($obfs_ibx) {
obfuscate_addrs($obfs_ibx, $s);
obfuscate_addrs($obfs_ibx, $f);
}
my $date = PublicInbox::View::fmt_ts($smsg->ds);
my $mid = PublicInbox::Hval->new_msgid($smsg->mid)->{href};
$s = '(no subject)' if $s eq '';
$$res .= qq{$rank. }.
$s . " \n";
$$res .= "$pfx - by $f @ $date UTC [$pct%]\n\n";
}
$$res .= search_nav_bot($mset, $q);
*noop;
}
sub err_txt {
my ($ctx, $err) = @_;
my $u = $ctx->{-inbox}->base_url($ctx->{env}) . '_/text/help/';
$err =~ s/^\s*Exception:\s*//; # bad word to show users :P
$err = ascii_html($err);
"\nBad query: $err \n" .
qq{See $u for help on using search};
}
sub search_nav_top {
my ($mset, $q, $ctx) = @_;
my $m = $q->qs_html(x => 'm', r => undef);
my $rv = qq{};
}
sub search_nav_bot {
my ($mset, $q) = @_;
my $total = $mset->get_matches_estimated;
my $l = $q->{l};
my $rv = ' ';
my $o = $q->{o};
my $off = $o < 0 ? -($o + 1) : $o;
my $end = $off + $mset->size;
my $beg = $off + 1;
if ($beg <= $end) {
$rv .= "Results $beg-$end of $total";
$rv .= ' (estimated)' if $end != $total;
} else {
$rv .= "No more results, only $total";
}
my ($next, $join, $prev);
if ($o >= 0) { # sort descending
my $n = $o + $l;
if ($n < $total) {
$next = $q->qs_html(o => $n, l => $l);
}
if ($o > 0) {
$join = $n < $total ? '/' : ' ';
my $p = $o - $l;
$prev = $q->qs_html(o => ($p > 0 ? $p : 0));
}
} else { # o < 0, sort ascending
my $n = $o - $l;
if (-$n < $total) {
$next = $q->qs_html(o => $n, l => $l);
}
if ($o < -1) {
$join = -$n < $total ? '/' : ' ';
my $p = $o + $l;
$prev = $q->qs_html(o => ($p < 0 ? $p : 0));
}
}
$rv .= qq{ next } if $next;
$rv .= $join if $join;
$rv .= qq{prev } if $prev;
my $rev = $q->qs_html(o => $o < 0 ? 0 : -1);
$rv .= qq{ | reverse results };
}
sub sort_relevance {
my ($pct) = @_;
sub {
[ sort { (eval { $pct->{$b->topmost->{id}} } || 0)
<=>
(eval { $pct->{$a->topmost->{id}} } || 0)
} @{$_[0]} ] };
}
sub mset_thread {
my ($ctx, $mset, $q) = @_;
my %pct;
my $ibx = $ctx->{-inbox};
my $msgs = $ibx->search->retry_reopen(sub { [ map {
my $i = $_;
my $smsg = PublicInbox::SearchMsg->load_doc($i->get_document);
$pct{$smsg->mid} = $i->get_percent;
$smsg;
} ($mset->items) ]});
my $r = $q->{r};
my $rootset = PublicInbox::SearchThread::thread($msgs,
$r ? sort_relevance(\%pct) : *PublicInbox::View::sort_ds,
$ctx);
my $skel = search_nav_bot($mset, $q). "";
$ctx->{-upfx} = '';
$ctx->{anchor_idx} = 1;
$ctx->{cur_level} = 0;
$ctx->{dst} = \$skel;
$ctx->{mapping} = {};
$ctx->{pct} = \%pct;
$ctx->{prev_attr} = '';
$ctx->{prev_level} = 0;
$ctx->{s_nr} = scalar(@$msgs).'+ results';
# reduce hash lookups in skel_dump
$ctx->{-obfuscate} = $ctx->{-inbox}->{obfuscate};
PublicInbox::View::walk_thread($rootset, $ctx,
*PublicInbox::View::pre_thread);
@$msgs = reverse @$msgs if $r;
sub {
return unless $msgs;
my $smsg;
while (my $m = pop @$msgs) {
$smsg = $ibx->smsg_mime($m) and last;
}
if ($smsg) {
return PublicInbox::View::index_entry($smsg, $ctx,
scalar @$msgs);
}
$msgs = undef;
$skel .= "\n ";
};
}
sub ctx_prepare {
my ($q, $ctx) = @_;
my $qh = $q->{'q'};
utf8::decode($qh);
$qh = ascii_html($qh);
$ctx->{-q_value_html} = $qh;
$ctx->{-atom} = '?'.$q->qs_html(x => 'A', r => undef);
$ctx->{-title_html} = "$qh - search results";
my $extra = '';
$extra .= qq{ } if $q->{r};
if (my $x = $q->{x}) {
$x = ascii_html($x);
$extra .= qq{ };
}
$ctx->{-extra_form_html} = $extra;
}
sub adump {
my ($cb, $mset, $q, $ctx) = @_;
my $ibx = $ctx->{-inbox};
my @items = $mset->items;
$ctx->{search_query} = $q;
my $srch = $ibx->search;
PublicInbox::WwwAtomStream->response($ctx, 200, sub {
while (my $x = shift @items) {
$x = load_doc_retry($srch, $x);
$x = $ibx->smsg_mime($x) and return $x;
}
return undef;
});
}
package PublicInbox::SearchQuery;
use strict;
use warnings;
use URI::Escape qw(uri_escape);
use PublicInbox::Hval;
use PublicInbox::MID qw(MID_ESC);
sub new {
my ($class, $qp) = @_;
my $r = $qp->{r};
my ($l) = (($qp->{l} || '') =~ /([0-9]+)/);
$l = $LIM if !$l || $l > $LIM;
bless {
q => $qp->{'q'},
x => $qp->{x} || '',
o => (($qp->{o} || '0') =~ /(-?[0-9]+)/),
l => $l,
r => (defined $r && $r ne '0'),
}, $class;
}
sub qs_html {
my ($self, %over) = @_;
if (keys %over) {
my $tmp = bless { %$self }, ref($self);
foreach my $k (keys %over) {
$tmp->{$k} = $over{$k};
}
$self = $tmp;
}
my $q = uri_escape($self->{'q'}, MID_ESC);
$q =~ s/%20/+/g; # improve URL readability
my $qs = "q=$q";
if (my $o = $self->{o}) { # ignore o == 0
$qs .= "&o=$o";
}
if (my $l = $self->{l}) {
$qs .= "&l=$l" unless $l == $LIM;
}
if (my $r = $self->{r}) {
$qs .= "&r";
}
if (my $x = $self->{x}) {
$qs .= "&x=$x" if ($x eq 't' || $x eq 'A' || $x eq 'm');
}
$qs;
}
1;