Paul Mooney > WWW-Lovefilm-API > WWW::Lovefilm::API

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Module Version: 0.13   Source  

NAME ^

WWW::Lovefilm::API - Interface for LOVEFiLM's API

VERSION ^

Version 0.13

OVERVIEW ^

This module is to provide your perl applications with easy access to the LOVEFiLM's API (http://developer.lovefilm.com/). The Lovefilm API allows access to movie and user information, including queues, rating, rental history, and more.

SYNOPSIS ^

  use WWW::Lovefilm::API;
  use XML::Simple;
  use Data::Dumper;
  use URI::Escape;
  use JSON;

  my %auth = Your::Custom::getAuthFromCache();

  my $lovefilm = WWW::Lovefilm::API->new({
    consumer_key    => $auth{consumer_key},
    consumer_secret => $auth{consumer_secret},
    access_token    => $auth{access_token},
    access_secret   => $auth{access_secret},
    user_id         => $auth{user_id},

    content_filter => sub { decode_json(shift) },  # optional
  });

  if( ! $auth{user_id} ){
    my %data = $lovefilm->RequestToken();

    my $token    = $data{token};
    my $encoded  = uri_escape('?myuser=123'); # params will be sent back to us
    my $this_url = $q->url();
    my $url      = $data{login_url} . '?oauth_token=' . $data{token}. ";oauth_callback=$this_url" . $encoded;

    # -- REDIRECT USER TO $url HERE --

    my $token_secret = $q->param('token');
    my %more_data    = $lovefilm->RequestAccessToken(
        oauth_token  => $data{token},         # got from RequestToken()
        token_secret => $token_secret, 
    );

    # %more_data till now hold access_token and access_secret
  }

  $lovefilm->REST->Users;
  $lovefilm->Get() or die $lovefilm->content_error;
  print Dumper $lovefilm->content; # Basic info on this user

  $lovefilm->REST->Users->at_home();  # What discs do they have at home
  $lovefilm->Get() or die $lovefilm->content_error;
  print Dumper $lovefilm->content;

  $lovefilm->REST->Catalog->Title;
  $lovefilm->Get(
    term           => 'batman',
    start_index    => 1, # 1 based index
    items_per_page => 20,
  );

  my $data = $lovefilm->content;

And for resources that do not require a lovefilm account:

  use WWW::Lovefilm::API;
  use XML::Simple;
  my $lovefilm = WWW::Lovefilm::API->new({
        consumer_key
        consumer_secret
        content_filter => sub { XMLin(@_) },
  });
  $lovefilm->REST->Catalog->Title;
  $lovefilm->Get( term => 'zzyzx' );
  printf "%d Results.\n", $lovefilm->content->{total_results};
  printf "Title: %s\n", $_->{title}->{clean} for values %{ $lovefilm->content->{catalog_title} };

GETTING STARTED ^

The first step to using this module is to register at http://developer.lovefilm.com -- you will need to register your application, for which you'll receive a consumer_key and consumer_secret keypair.

Any applications written with the Lovefilm API must adhere to the Terms of Use (http://developer.lovefilm.com/docs/additional_information/Terms_of_Use) and Branding Requirements (http://developer.lovefilm.com/docs/Additional_Information/Brand_Guidelines).

Usage

This module provides access to the REST API via perl syntactical sugar. For example, to find a user's queue, the REST url is of the form users/userID/queues :

  http://openapi.lovefilm.com/users/T1tareQFowlmc8aiTEXBcQ5aed9h_Z8zdmSX1SnrKoOCA-/queues/

Using this module, the syntax would be (note that the Post or Delete methods can be used instead of Get, depending upon the API action being taken):

  $lovefilm->REST->Users->Queues;
  $lovefilm->Get(%$params) or die $lovefilm->content_error;
  print $lovefilm->content;

Other examples include:

  $lovefilm->REST->Users;
  $lovefilm->REST->Users->At_Home;
  $lovefilm->REST->users->at_home;           # Case independant
  $lovefilm->REST->Catalog->Title('78324');
  $lovefilm->REST->Users->rented;

Please note:

All of the possibilities (and parameter details) are outlined here: http://developer.lovefilm.com/docs/REST_API_Reference

There is a helper method "rest2sugar" included that will provide the proper syntax given a url. This is handy for translating the example urls in the REST API Reference.

Resources

The following describe the authentication that's happening under the hood and were used heavily in writing this module:

http://sites.google.com/site/oauthgoog/2leggedoauth/2opensocialrestapi

Net::OAuth

EXAMPLES ^

The examples/ directory in the distribution has several examples to use as starting points.

There is a vars.inc file in the directory -- most of these example read that for customer key/secret, etc, so fill that file out first to enter your specific values.

Examples include:

login.pl

Takes a lovefilm account login/password and (for a customer key) obtains an access token, secret, and user_id.

profile.pl

Gets a user's lovefilm profile and prints the name.

search.pl

Takes a search string and returns the results from a catalog search.

  $ perl search.pl firefly
  4 results:
  Firefly Dreams (2009-05-11)
  Firefly - The Complete Series (2004-04-19)
  Grave Of The Fireflies (2004-08-23)
  Fireflies in the Garden (2009-09-28)
catalog-lwp_handlers.pl

Retrieves the entire Lovefilm catalog and saves it to catalog.xml in the current directory -- uses LWP handlers as an example of modifying the "ua" attribute.

catalog2db.pl

Converts the xmlfile fetched by catalog.pl to a SQLite database. Also contains an example DBIx::Class setup for working with the generated database.

test_cgi.pl

A simple CGI script that shows the end to end process in a browser of a user being redirected to LOVEFiLM, granting the script access, then being redirected back and showing what films the user has at home.

Also see the "TEST SUITE" source code for more examples.

METHODS ^

new

This is the constructor. Takes a hashref of "ATTRIBUTES". Inherited from Class::Accessor.

Most important options to pass are the "consumer_key" and "consumer_secret".

REST

This is used to change the resource that is being accessed. Some examples:

  # The user-friendly way:
  $lovefilm->REST->Users->Feeds;

  # Including numeric parts:
  $lovefilm->REST->Catalog->Title('60021896');

  # Load a pre-formed url (e.g. a title_ref from a previous query)
  $lovefilm->REST('http://openapi.lovefilm.com/users/T1tareQFowlmc8aiTEXBcQ5aed9h_Z8zdmSX1SnrKoOCA-/queues/disc?feed_token=T1u.tZSbY9311F5W0C5eVQXaJ49.KBapZdwjuCiUBzhoJ_.lTGnmES6JfOZbrxsFzf&oauth_consumer_key=v9s778n692e9qvd83wfj9t8c&');

RequestAccess

This is used to login as a lovefilm user in order to get an access token.

  my ($access_token, $access_secret, $user_id) = $lovefilm->RequestAccess( $user, $pass );

Get

Post

Delete

rest2sugar

RequestToken

Makes a call to LOVEFiLM to get a token. It returns a hash with the following information required when you redirect the user to the LOVEFiLM website

token => $token
login_url => $login_url,
token_secret => $token_secret

RequestAccessToken

This method is to be called after the user has been redirected back to your site after granting your app access.

It would be nice is the user_id was returned with the access token, but its not. This method makes an additional call for you to get it as it's rather important.

ATTRIBUTES ^

consumer_key

consumer_secret

access_token

access_secret

user_id

ua

User agent to use under the hood. Defaults to LWP::UserAgent->new(). Can be altered anytime, e.g.

        $lovefilm->ua->timeout(500);

content_filter

The content returned by the REST calls is POX (plain old XML). Setting this attribute to a code ref will cause the content to be "piped" through it.

  use XML::Simple;
  $lovefilm->content_filter(  sub { XMLin(@_) }  );  # Parse the XML into a perl data structure

If this is set to a scalar, it will be treated as a filename to store the result to, instead of it going to memory. This is especially useful for retrieving the (large) full catalog -- see "catalog.pl".

  $lovefilm->content_filter('catalog.xml');
  $lovefilm->REST->Catalog->Titles->Index;
  $lovefilm->Get();
  # print `ls -lart catalog.xml`

content

Read-Only. This returns the content from the REST calls. Natively, this is a scalar of POX (plain old XML). If a "content_filter" is set, the "original_content" is filtered through that, and the result is returned as the value of the content attribute (and is cached in the "_filtered_content" attribute.

original_content

Read-Only. This will return a scalar which is simply a dereference of "content_ref".

content_ref

Scalar reference to the original content.

content_error

Read-Only. If an error occurs, this will hold the error message/information.

url

Read-Only.

rest_url

Read-Only.

INTERNAL ^

_url

_params

_levels

_submit

__OAuth_Request

_set_content

Takes scalar reference.

_filtered_content

Used to cache the return value of filtering the content through the content_filter.

WWW::Lovefilm::API::_UrlAppender

TEST SUITE ^

Most of the test suite in the t/ directory requires a customer key/secret and access token/secret. You can supply these via enviromental variables:

        # *nix
        export WWW_LOVEFILM_API__CONSUMER_KEY="qweqweqwew"
        export WWW_LOVEFILM_API__CONSUMER_SECRET="asdasd"
        export WWW_LOVEFILM_API__LOGIN_USER="you@example.com"
        export WWW_LOVEFILM_API__LOGIN_PASS="qpoiuy"
        export WWW_LOVEFILM_API__ACCESS_TOKEN="trreqweyueretrewere"
        export WWW_LOVEFILM_API__ACCESS_SECRET="mnmbmbdsf"

        REM DOS
        SET WWW_LOVEFILM_API__CONSUMER_KEY=qweqweqwew
        SET WWW_LOVEFILM_API__CONSUMER_SECRET=asdasd
        SET WWW_LOVEFILM_API__LOGIN_USER=you@example.com
        SET WWW_LOVEFILM_API__LOGIN_PASS=qpoiuy
        SET WWW_LOVEFILM_API__ACCESS_TOKEN=trreqweyueretrewere
        SET WWW_LOVEFILM_API__ACCESS_SECRET=mnmbmbdsf

And then, from the extracted distribution directory, either run the whole test suite:

        perl Makefile.PL
        make test

or just execute specific tests:

        prove -v -Ilib t/api.t
        prove -v -Ilib t/access_token.t

APPLICATIONS ^

Are you using WWW::Lovefilm::API in your application? Please email me with your application name and url or email, and i will be happy to list it here.

AUTHOR ^

David Westbrook (CPAN: davidrw), <dwestbrook at gmail.com> Paul Mooney (CPAN: pmooney), <paul.cpan at phymatics.co.uk>

BUGS ^

Please report any bugs or feature requests to bug-www-lovefilm-api at rt.cpan.org, or through the web interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=WWW-Lovefilm-API. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.

SUPPORT ^

You can find documentation for this module with the perldoc command.

    perldoc WWW::Lovefilm::API

You can also look for information at:

COPYRIGHT & LICENSE ^

Copyright 2009 David Westbrook, all rights reserved.
Copyright 2010 Paul Mooney, all rights reserved.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

This package is a derivative of WWW::Netflix::API, which was created by David Westbrook.

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