package Selenium::Remote::RemoteConnection;
$Selenium::Remote::RemoteConnection::VERSION = '1.29';
use strict;
use warnings;

#ABSTRACT: Connect to a selenium server

use Moo;
use Try::Tiny;
use LWP::UserAgent;
use HTTP::Headers;
use HTTP::Request;
use Carp qw(croak);
use JSON;
use Data::Dumper;
use Selenium::Remote::ErrorHandler;
use Scalar::Util qw{looks_like_number};

has 'remote_server_addr' => (
    is => 'rw',
);

has 'port' => (
    is => 'rw',
);

has 'debug' => (
    is => 'rw',
    default => sub { 0 }
);

has 'ua' => (
    is => 'lazy',
    builder => sub { return LWP::UserAgent->new; }
);

has 'error_handler' => (
    is => 'lazy',
    builder => sub { return Selenium::Remote::ErrorHandler->new; }
);

with 'Selenium::Remote::Driver::CanSetWebdriverContext';


sub check_status {
    my $self = shift;
    my $status;

    try {
        $status = $self->request({method => 'GET', url => 'status'});
    }
    catch {
        croak "Could not connect to SeleniumWebDriver: $_" ;
    };

    if($status->{cmd_status} ne 'OK') {
        # Could be grid, see if we can talk to it
        $status = undef;
        $status = $self->request({method => 'GET', url => 'grid/api/hub/status'});
    }

    unless ($status->{cmd_status} eq 'OK') {
        croak "Selenium server did not return proper status";
    }
}


sub request {
    my ($self,$resource,$params,$dont_process_response) = @_;
    my $method =        $resource->{method};
    my $url =        $resource->{url};
    my $no_content_success =        $resource->{no_content_success} // 0;

    my $content = '';
    my $fullurl = '';

    # Construct full url.
    if ($url =~ m/^http/g) {
        $fullurl = $url;
    }
    elsif ($url =~ m/^\//) {
        # This is used when we get a 302 Redirect with a Location header.
        $fullurl =
           "http://"
          . $self->remote_server_addr . ":"
          . $self->port
          . $url;
    }
    elsif ($url =~ m/grid/g) {
        $fullurl =
            "http://"
          . $self->remote_server_addr . ":"
          . $self->port
          . "/$url";
    }
    else {
        $fullurl =
            "http://"
          . $self->remote_server_addr . ":"
          . $self->port
          . $self->wd_context_prefix
          . "/$url";
    }

    if ((defined $params) && $params ne '') {

        #WebDriver 3 shims
        if ($resource->{payload}) {
            foreach my $key (keys(%{$resource->{payload}})) {
                $params->{$key} = $resource->{payload}->{$key};
            }
        }

        my $json = JSON->new;
        $json->allow_blessed;
        $content = $json->allow_nonref->utf8->encode($params);
    }

    print "REQ: $method, $fullurl, $content\n" if $self->debug;

    # HTTP request
    my $header =
      HTTP::Headers->new(Content_Type => 'application/json; charset=utf-8');
    $header->header('Accept' => 'application/json');
    my $request = HTTP::Request->new($method, $fullurl, $header, $content);
    my $response = $self->ua->request($request);
    if ($dont_process_response) {
        return $response;
    }
    return $self->_process_response($response, $no_content_success);
}

sub _process_response {
    my ($self, $response, $no_content_success) = @_;
    my $data; # server response 'value' that'll be returned to the user
    my $json = JSON->new;

    if ($response->is_redirect) {
        my $redirect = {
            method => 'GET',
            url    => $response->header('location')
        };
        return $self->request($redirect);
    }
    else {
        my $decoded_json = undef;
        print "RES: ".$response->decoded_content."\n\n" if $self->debug;

        if (($response->message ne 'No Content') && ($response->content ne '')) {
            if ($response->content_type !~ m/json/i) {
                $data->{'cmd_status'} = 'NOTOK';
                $data->{'cmd_return'}->{message} = 'Server returned error message '.$response->content.' instead of data';
                return $data;
            }
            $decoded_json = $json->allow_nonref(1)->utf8(1)->decode($response->content);
            $data->{'sessionId'} = $decoded_json->{'sessionId'};
        }

        if ($response->is_error) {
            $data->{'cmd_status'} = 'NOTOK';
            if (defined $decoded_json) {
                $data->{'cmd_return'} = $self->error_handler->process_error($decoded_json);
            }
            else {
                $data->{'cmd_return'} = 'Server returned error code '.$response->code.' and no data';
            }
            return $data;
        }
        elsif ($response->is_success) {
            $data->{'cmd_status'} = 'OK';
            if (defined $decoded_json) {

                #XXX MS edge doesn't follow spec here either
                if (looks_like_number($decoded_json->{status}) && $decoded_json->{status} > 0 && $decoded_json->{value}{message}) {
                    $data->{cmd_status} = 'NOT OK';
                    $data->{cmd_return} = $decoded_json->{value};
                    return $data;
                }
                #XXX shockingly, neither does InternetExplorerDriver
                if ( ref $decoded_json eq 'HASH' && $decoded_json->{error} ) {
                    $data->{cmd_status} = 'NOT OK';
                    $data->{cmd_return} = $decoded_json;
                    return $data;
                }

                if ($no_content_success) {
                    $data->{'cmd_return'} = 1
                }
                else {
                    $data->{'cmd_return'} = $decoded_json->{'value'};
                    if (ref($data->{cmd_return}) eq 'HASH'
                        && exists $data->{cmd_return}->{sessionId}) {
                        $data->{sessionId} = $data->{cmd_return}->{sessionId};
                    }
                }
            }
            else {
                $data->{'cmd_return'} = 'Server returned status code '.$response->code.' but no data';
            }
            return $data;
        }
        else {
            # No idea what the server is telling me, must be high
            $data->{'cmd_status'} = 'NOTOK';
            $data->{'cmd_return'} = 'Server returned status code '.$response->code.' which I don\'t understand';
            return $data;
        }
    }
}


1;

__END__

=pod

=encoding UTF-8

=head1 NAME

Selenium::Remote::RemoteConnection - Connect to a selenium server

=head1 VERSION

version 1.29

=head1 SYNOPSIS

    my $driver = Selenium::Remote::Driver->new();
    eval { $driver->remote_conn->check_status() };
    die "do something to kick the server" if $@;

=head1 DESCRIPTION

You shouldn't really need to use this module unless debugging or checking connections when testing dangerous things.

=head1 CONSTRUCTOR

=head2 new(%parameters)

Accepts 5 parameters:

=over 4

=item B<remote_server_addr> - address of selenium server

=item B<port> - port of selenium server

=item B<ua> - Useful to override with Test::LWP::UserAgent in unit tests

=item B<debug> - Should be self-explanatory

=item B<error_handler> - Defaults to Selenium::Remote::ErrorHandler.

=back

These can be set any time later by getter/setters with the same name.

=head1 METHODS

=head2 check_status

Croaks unless the selenium server is responsive.  Sometimes is useful to call in-between tests (the server CAN die on you...)

=head2 request

Make a request of the Selenium server.  Mostly useful for debugging things going wrong with Selenium::Remote::Driver when not in normal operation.

=head1 SEE ALSO

Please see those modules/websites for more information related to this module.

=over 4

=item *

L<Selenium::Remote::Driver|Selenium::Remote::Driver>

=back

=head1 BUGS

Please report any bugs or feature requests on the bugtracker website
L<https://github.com/teodesian/Selenium-Remote-Driver/issues>

When submitting a bug or request, please include a test-file or a
patch to an existing test-file that illustrates the bug or desired
feature.

=head1 AUTHORS

Current Maintainers:

=over 4

=item *

Daniel Gempesaw <gempesaw@gmail.com>

=item *

Emmanuel Peroumalnaïk <peroumalnaik.emmanuel@gmail.com>

=back

Previous maintainers:

=over 4

=item *

Luke Closs <cpan@5thplane.com>

=item *

Mark Stosberg <mark@stosberg.com>

=back

Original authors:

=over 4

=item *

Aditya Ivaturi <ivaturi@gmail.com>

=back

=head1 COPYRIGHT AND LICENSE

Copyright (c) 2010-2011 Aditya Ivaturi, Gordon Child

Copyright (c) 2014-2017 Daniel Gempesaw

Licensed 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.

=cut
