File Coverage

lib/PAGI/Endpoint/WebSocket.pm

Criterion	Covered	Total	%
statement	48	57	84.2
branch	9	14	64.2
condition	1	2	50.0
subroutine	13	15	86.6
pod	3	5	60.0
total	74	93	79.5

package PAGI::Endpoint::WebSocket;

use strict;
use warnings;

use Future::AsyncAwait;
use Carp qw(croak);
use Module::Load qw(load);


# Factory class method - override in subclass for customization
sub websocket_class { 'PAGI::WebSocket' }

# Encoding: 'text', 'bytes', or 'json'
sub encoding { 'text' }

sub to_app {
    my ($class) = @_;
    my $ws_class = $class->websocket_class;
    load($ws_class);

    return async sub {
        my ($scope, $receive, $send) = @_;

        my $type = $scope->{type} // '';
        croak "Expected websocket scope, got '$type'" unless $type eq 'websocket';

        my $endpoint = $class->new;
        my $ws = $ws_class->new($scope, $receive, $send);

        await $endpoint->handle($ws, $scope, $send);
    };
}

sub new {
    my ($class, %args) = @_;
    return bless \%args, $class;
}

async sub handle {
    my ($self, $ws, $scope, $send) = @_;

    # Call on_connect if defined
    if ($self->can('on_connect')) {
        await $self->on_connect($ws);
    } else {
        # Default: accept the connection
        await $ws->accept;
    }

    # Register disconnect callback
    if ($self->can('on_disconnect')) {
        $ws->on_close(sub {
            my ($code, $reason) = @_;
            $self->on_disconnect($ws, $code, $reason);
        });
    }

    # Handle messages based on encoding
    eval {
        if ($self->can('on_receive')) {
            my $encoding = $self->encoding;

            if ($encoding eq 'json') {
                await $ws->each_json(async sub {
                    my ($data) = @_;
                    await $self->on_receive($ws, $data);
                });
            } elsif ($encoding eq 'bytes') {
                await $ws->each_bytes(async sub {
                    my ($data) = @_;
                    await $self->on_receive($ws, $data);
                });
            } else {
                # Default: text
                await $ws->each_text(async sub {
                    my ($data) = @_;
                    await $self->on_receive($ws, $data);
                });
            }
        } else {
            # No on_receive, just wait for disconnect
            await $ws->run;
        }
    };
    die $@ if $@;
}

1;

__END__