package YTMusicAPI::Parsers::Utils;

use strict;
use warnings;

use Exporter 'import';

use YTMusicAPI::Navigation;

sub parse_menu_playlists {
    my ( $data, $result ) = @_;
    my $watch_menu = find_objects_by_key( nav( $data, \@$MENU_ITEMS ), $MNIR );

    foreach my $item ( map { $_->{$MNIR} } @$watch_menu ) {
        my $icon = nav( $item, \@$ICON_TYPE, 1 );
        my $watch_key;

        if ( $icon eq "MUSIC_SHUFFLE" ) {
            $watch_key = "shuffleId";
        }
        elsif ( $icon eq "MIX" ) {
            $watch_key = "radioId";
        }
        else {
            next;
        }

        my $watch_id =
          nav( $item,
            [ "navigationEndpoint", "watchPlaylistEndpoint", "playlistId" ],
            1 );
        unless ($watch_id) {
            $watch_id = nav( $item,
                [ "navigationEndpoint", "watchEndpoint", "playlistId" ], 1 );
        }

        if ($watch_id) {
            $result->{$watch_key} = $watch_id;
        }
    }
}

sub get_item_text {
    my ( $item, $index, $run_index, $none_if_absent ) = @_;
    $run_index      //= 0;
    $none_if_absent //= 0;

    my $column = get_flex_column_item( $item, $index );
    return unless $column;

    if ( $none_if_absent
        && scalar( @{ $column->{text}->{runs} } ) < $run_index + 1 )
    {
        return;
    }

    return $column->{text}->{runs}->[$run_index]->{text};
}

sub get_flex_column_item {
    my ( $item, $index ) = @_;

    if ( scalar( @{ $item->{'flexColumns'} } ) <= $index
        || !
        exists $item->{'flexColumns'}->[$index]
        ->{'musicResponsiveListItemFlexColumnRenderer'}->{'text'}
        || !
        exists $item->{'flexColumns'}->[$index]
        ->{'musicResponsiveListItemFlexColumnRenderer'}->{'text'}->{'runs'} )
    {
        return undef;
    }

    return $item->{'flexColumns'}->[$index]
      ->{'musicResponsiveListItemFlexColumnRenderer'};
}

sub get_fixed_column_item {
    my ( $item, $index ) = @_;

    if ( !exists $item->{'fixedColumns'}->[$index]
        ->{'musicResponsiveListItemFixedColumnRenderer'}->{'text'}
        || !
        exists $item->{'fixedColumns'}->[$index]
        ->{'musicResponsiveListItemFixedColumnRenderer'}->{'text'}->{'runs'} )
    {
        return undef;
    }

    return $item->{'fixedColumns'}->[$index]
      ->{'musicResponsiveListItemFixedColumnRenderer'};
}

sub get_dot_separator_index {
    my ($runs) = @_;
    my $index = 0;

    foreach my $run (@$runs) {
        last if ( $run->{"text"} eq " • " );
        $index++;
    }

    return $index == scalar @$runs ? $index : $index;
}

sub parse_duration {
    my ($duration) = @_;
    return $duration unless defined $duration;

    my @mapped_increments = ( [ 1, 60, 3600 ], reverse split /:/, $duration );
    my $seconds           = 0;

    while ( my ( $multiplier, $time ) = splice( @mapped_increments, 0, 2 ) ) {
        $seconds += $multiplier * $time;
    }

    return $seconds;
}

sub parse_id_name {
    my ($sub_run) = @_;
    return {
        "id" => nav(
            $sub_run, [ "navigationEndpoint", "browseEndpoint", "browseId" ], 1
        ),
        "name" => nav( $sub_run, ["text"], 1 ),
    };
}

our @EXPORT = qw(
    parse_menu_playlists
    get_item_text
    get_flex_column_item
    get_fixed_column_item
    get_dot_separator_index
    parse_duration
    parse_id_name
);

1;