# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

package Lucy::Index::IndexReader;
use Lucy;

1;

__END__

__BINDING__

my $xs_code = <<'END_XS_CODE';
MODULE = Lucy    PACKAGE = Lucy::Index::IndexReader

void
set_race_condition_debug1(val_sv)
    SV *val_sv;
PPCODE:
    LUCY_DECREF(lucy_PolyReader_race_condition_debug1);
    lucy_PolyReader_race_condition_debug1 = (lucy_CharBuf*)
        XSBind_maybe_sv_to_cfish_obj(val_sv, LUCY_CHARBUF, NULL);
    if (lucy_PolyReader_race_condition_debug1) {
        (void)LUCY_INCREF(lucy_PolyReader_race_condition_debug1);
    }

int32_t
debug1_num_passes()
CODE:
    RETVAL = lucy_PolyReader_debug1_num_passes;
OUTPUT: RETVAL
END_XS_CODE

my $synopsis = <<'END_SYNOPSIS';
    my $reader = Lucy::Index::IndexReader->open(
        index => '/path/to/index',
    );
    my $seg_readers = $reader->seg_readers;
    for my $seg_reader (@$seg_readers) {
        my $seg_name = $seg_reader->get_segment->get_name;
        my $num_docs = $seg_reader->doc_max;
        print "Segment $seg_name ($num_docs documents):\n";
        my $doc_reader = $seg_reader->obtain("Lucy::Index::DocReader");
        for my $doc_id ( 1 .. $num_docs ) {
            my $doc = $doc_reader->fetch_doc($doc_id);
            print "  $doc_id: $doc->{title}\n";
        }
    }
END_SYNOPSIS

my $constructor = <<'END_CONSTRUCTOR';
    my $reader = Lucy::Index::IndexReader->open(
        index    => '/path/to/index', # required
        snapshot => $snapshot,
        manager  => $index_manager,
    );
END_CONSTRUCTOR

Clownfish::Binding::Perl::Class->register(
    parcel       => "Lucy",
    class_name   => "Lucy::Index::IndexReader",
    xs_code      => $xs_code,
    bind_methods => [
        qw( Doc_Max
            Doc_Count
            Del_Count
            Fetch
            Obtain
            Seg_Readers
            _offsets|Offsets
            Get_Components
            )
    ],
    bind_constructors => ['open|do_open'],
    make_pod          => {
        synopsis    => $synopsis,
        constructor => {
            name   => 'open',
            func   => 'do_open',
            sample => $constructor,
        },
        methods => [
            qw(
                doc_max
                doc_count
                del_count
                seg_readers
                offsets
                fetch
                obtain
                )
        ]
    },
);