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A small library to help using the eBay Trading API with Ruby

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# Ebayr

Ebayr is a small gem which makes it a little easier to use the eBay Trading API
with Ruby.

## Installation

Add this line to your application's Gemfile:

gem 'ebayr'

And then execute:

$ bundle

Or install it yourself as:

$ gem install ebayr

## Ruby versions pre-2.2

Older versions of ruby are no longer supported as of v0.1.0. To use ebayr
with Ruby 1.8, try version v0.0.9.

$ gem install ebayr -v '=0.0.9'

You may need to install an earlier version of activesupport in order to make
this work (since the dependency i18n does not support 1.8 after version
0.6.11). Your mileage may vary, and you probably should update your Ruby
version anyway.

If you would like to use anthing pre Ruby 2.2, then, you can try any of the
releases from the v0.0 branch; the latest is v0.0.11

$ gem install ebayr -v '=0.0.11'

Again, YMMV, and the same advice applies.

## Usage

To use the eBay Trading API, you'll need a developer keyset. Sign up at
http://developer.ebay.com if you haven't already done so.

Next, you'll need to require Ebayr, and tell it to use your keys. You will also
need to generate an RUName, and get the key for that. (This is all standard
stuff - look at the [eBay developer docs][1] for details).

```ruby
require 'ebayr'

Ebayr.dev_id = "my-dev-id"

# This is only needed if you want to retrieve user tokens
Ebayr.authorization_callback_url = "https://my-site/callback-url"

Ebayr.auth_token = "myverylongebayauthtoken"

Ebayr.app_id = "my-ebay-app-id"

Ebayr.cert_id = "my-ebay-cert-id"

Ebayr.ru_name = "my-ebay-ru-name"

# Set this to true for testing in the eBay Sandbox (but remember to use the
# appropriate keys!). It's true by default.
Ebayr.sandbox = false
```

Now you're ready to make calls
```ruby
Ebayr.call(:GeteBayOfficialTime)
session = Ebayr.call(:GetSessionID, :RuName => Ebayr.ru_name)[:SessionID]
```

To use an authorized user's key, pass in an `auth_token` parameter
```ruby
Ebayr.call(:GetOrders, :auth_token => "another-ebay-auth-token")
```

Use the input array to add to the body of the call
```ruby
# Adds: "<a>1</a><a><b>1</b><b>2</b></a>" to the ebay request.
args = [{ :a => 1 }, { :a => [{:b => 1 }, { :b => 2 }] }]
Ebayr::Request.new(:Blah, :input => args)
```

### Configuration

Ebayr will look for the following Ruby files, and load them *once* in order (if
they exist) when the module is evaluated:

1. /etc/ebayr.conf
2. /usr/local/etc/ebayr.conf
3. ~/.ebayr.conf
4. ./.ebayr.conf

You can put configuration code in there (such as the variable setting shown
above). The files should be plain old Ruby.

In a Ruby on Rails project, just create a file called
config/initializers/ebayr.rb (or something), and put the configuration there. Of
course, you should probably not check in these files, if you're using a public
repository.

## Testing

[![Status](https://travis-ci.org/bjjb/ebayr.png?branch=master)](https://travis-ci.org/bjjb/ebayr)

When running test, you generally won't want to use up your API call-limit too
quickly, so it makes sense to stub out calls to the eBay API.

Ebayr test use [Fakeweb][2] to mimic the responses from eBay.

```ruby
require 'ebayr'
require 'test/unit'
require 'fakeweb'

class MyTest < Test::Unit::TestCase
  def setup
    Ebayr.sandbox = true
  end

# A very contrived example...
  def test_get_ebay_time
    xml = <<-XML
      <GeteBayOfficialTimeResponse>
        <Ack>Success</Ack>
        <Timestamp>blah</Timestamp>
      </GeteBayOfficialTimeResponse>
    XML

FakeWeb.register_uri(:post, Ebayr.uri, :body => xml)

time = SomeWrapperThatUsesEbayr.get_ebay_time
    assert_equal 'blah', time
  end
end

class SomeWrapperThatUsesEbayr
  def self.get_ebay_time
    hash = Ebayr.call(:GeteBayOfficialTime)
    hash.timestamp
  end
end
```

See ['./test/ebayr_test.rb'](test/ebayr_test.rb) for more examples.

You need to remember to include Fakeweb in your Gemfile, or Ebayr will complain.

## Contributing

1. Fork it
2. Create your feature branch (`git checkout -b my-new-feature`)
3. Commit your changes (`git commit -am 'Added some feature'`)
4. Push to the branch (`git push origin my-new-feature`)
5. Create new Pull Request

## Credits

Thanks to the great contributing maintainers on GitHub, including:
- David DeGraw
- Eric McKenna
- Jason Schock
- Laurent Arnoud
- SpeerJ
- jogaco

[1]: http://developer.ebay.com
[2]: http://fakeweb.rubyforge.org

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