# Swagger Client Code-Generator

## Overview
This is the swagger codegen project, which allows generation of client libraries automatically from a 
Swagger-compliant server.  You can find out more about both the spec and the framework at 
http://swagger.wordnik.com.  For more information about Wordnik's APIs, please visit http://developer.wordnik.com.  

### Prerequisites
You need the following installed and available in your $PATH:

<li>- Java 1.6 or greater (http://java.oracle.com)

<li>- Apache maven 3.0.3 or greater (http://maven.apache.org/)

<li>- Scala 2.9.1 [available here](http://www.scala-lang.org)

You also need to add the scala binary to your PATH.

### To generate a sample client library
You can build a client against Wordnik's [petstore](http://petstore.swagger.wordnik.com) API as follows:

```
./bin/scala-petstore.sh
```

This will run the script in [samples/client/petstore/ScalaPetstoreCodegen.scala](https://github.com/wordnik/swagger-codegen/blob/master/samples/client/petstore/scala/ScalaPetstoreCodegen.scala) and create the client.  You can then
compile and run the client, as well as unit tests against it:

```
cd samples/client/petstore/scala
mvn package
```

Other languages have petstore samples, too:
```
./bin/flash-petstore.sh
./bin/java-petstore.sh
./bin/php-petstore.sh
./bin/python-petstore.sh
```

### Generating libraries from your server
It's just as easy--you can either run the default generators:

```
./bin/runscala.sh com.wordnik.swagger.codegen.BasicScalaGenerator http://petstore.swagger.wordnik.com/api/resources.json special-key
```

Replace `Scala` with `Flash`, `PHP`, `Python`, `Java`.

You will probably want to override some of the defaults--like packages, etc.  For doing this, just create a scala
script with the overrides you want.  Follow [ScalaPetstoreCodegen](https://github.com/wordnik/swagger-codegen/blob/master/samples/client/petstore/scala/ScalaPetstoreCodegen.scala) as an example:

For example, create `src/main/scala/MyCodegen.scala` with these contents:

```scala
import com.wordnik.swagger.codegen.BasicScalaGenerator
import com.wordnik.swagger.core._

object MyCodegen extends BasicScalaGenerator {
  def main(args: Array[String]) = generateClient(args)

  // location of templates
  override def templateDir = "scala"

  // where to write generated code
  override def destinationDir = "client/scala/src/main/scala"

  // api invoker package
  override def packageName = "com.myapi.client"

  // package for models
  override def modelPackage = Some("com.myapi.client.model")

  // package for api classes
  override def apiPackage = Some("com.myapi.client.api")

  // supporting classes
  override def supportingFiles = List(
    ("apiInvoker.mustache", destinationDir + java.io.File.separator + packageName.replaceAll("\\.", java.io.File.separator), "ApiInvoker.scala"),
    ("pom.mustache", destinationDir, "pom.xml")
  )
}
```

Now you can generate your client like this:

```
./bin/runscala.sh src/main/scala/MyCodegen.scala http://my.api.com/resources.json super-secret-key
```

w00t!  Thanks to the scala interpretor, you didn't even need to recompile.

### Modifying the client library format
Don't like the default swagger client syntax?  Want a different language supported?  No problem!  Swagger codegen
processes mustache templates with the [scalate](http://scalate.fusesource.org/) engine.  You can modify our templates or
make your own.

You can look at `src/main/resources/${your-language}` for examples.  To make your own templates, create your own files
and override the `templateDir` in your script to point to the right place.  It actually is that easy.

### Where is Javascript???
See our [javascript library](http://github.com/wordnik/swagger.js)--it's completely dynamic and doesn't require
static code generation.

#### Generating a client from flat files (i.e. no remote server calls)
If you don't want to call your server, you can save the swagger spec files into a directory and pass an argument
to the code generator like this:

```
-DfileMap=/path/to/files
```

Or for example:
```
./bin/java-petstore-filemap.sh
```

Which simple passes `-DfileMap=src/test/resources/petstore` as an argument.  Great for creating libraries on your
ci server... or while coding on an airplane.

### Validating your swagger spec
You can use the validation tool to see that your server is creating a proper spec file.  If you want to learn
more about the spec file and format, please see [swagger-core](https://github.com/wordnik/swagger-core/wiki).  This
tool will read the server and generate a report of any violations of the spec.  If there are violations, the
client codegen and ui may not work correctly.

To validate an api and write output to ./swagger-errors.html:

```
./bin/validate.sh http://petstore.swagger.wordnik.com/api/resources.json "" ./swagger-errors.html
```

### To build the codegen library

This will create the swagger-codegen library from source.  

```
mvn package
```

Note!  The templates are included in the library generated.  If you want to modify the templates, you'll need to
either repackage the library OR modify your codegen script to use a file path!

License
-------

Copyright 2012 Wordnik, Inc.

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 [apache.org/licenses/LICENSE-2.0](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.