File Coverage

blib/lib/Geo/Coder/ArcGIS.pm

Criterion	Covered	Total	%
statement	35	58	60.3
branch	10	30	33.3
condition	4	11	36.3
subroutine	8	11	72.7
pod	4	4	100.0
total	61	114	53.5

package Geo::Coder::ArcGIS;

use strict;
use warnings;

use Carp qw(croak);
use JSON;
use LWP::UserAgent;
use URI;

our $VERSION = '0.01';
$VERSION = eval $VERSION;

sub new {
    my ($class, %params) = @_;

    my $self = bless \ %params, $class;

    $self->ua(
        $params{ua} || LWP::UserAgent->new(agent => "$class/$VERSION")
    );

    if ($self->{debug}) {
        my $dump_sub = sub { $_[0]->dump(maxlength => 0); return };
        $self->ua->set_my_handler(request_send  => $dump_sub);
        $self->ua->set_my_handler(response_done => $dump_sub);
        $self->{compress} ||= 0;
    }
    if (exists $self->{compress} ? $self->{compress} : 1) {
        $self->ua->default_header(accept_encoding => 'gzip,deflate');
    }

    croak q('https' requires LWP::Protocol::https)
        if $self->{https} and not $self->ua->is_protocol_supported('https');

    return $self;
}

sub response { $_[0]->{response} }

sub ua {
    my ($self, $ua) = @_;
    if ($ua) {
        croak q('ua' must be (or derived from) an LWP::UserAgent')
            unless ref $ua and $ua->isa(q(LWP::UserAgent));
        $self->{ua} = $ua;
    }
    return $self->{ua};
}

sub geocode {
    my ($self, @params) = @_;
    my %params = (@params % 2) ? (location => @params) : @params;
    my $raw = delete $params{raw};

    my $location = $params{location} or return;
    $location = Encode::encode('utf-8', $location);

    my $uri = URI->new(
        'http://tasks.arcgis.com/ArcGIS/rest/services/WorldLocator/'
            . 'GeocodeServer/findAddressCandidates'
    );
    $uri->scheme('https') if $self->{https};
    $uri->query_form(
        SingleLine => $location,
        f          => 'json',
        outFields  => '*',
    );

    my $res = $self->{response} = $self->ua->get(
        $uri, referer => 'http://www.arcgis.com/home/webmap/viewer.html'
    );
    return unless $res->is_success;

    # Change the content type of the response from 'application/json' so
    # HTTP::Message will decode the character encoding.
    $res->content_type('text/plain');

    my $content = $res->decoded_content;
    return unless $content;

    my $data = eval { from_json($content) };
    return unless $data;
    return $data if $raw;

    my @results = @{ $data->{candidates} || [] };
    return wantarray ? @results : $results[0];
}


1;

__END__