96 lines
4.3 KiB
Markdown
96 lines
4.3 KiB
Markdown
# Foodsoft API
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Foodsoft provides a JSON REST API that gives access to operations like
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like listing open orders, updating the ordergroup's order, and listing financial
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transactions. Not all Foodsoft functionality is available through the API, but
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we're open for new additions.
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The API is documented using [Open API 3.0.1](https://github.com/OAI/OpenAPI-Specification)
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/ [Swagger](https://swagger.io/) in [swagger.yaml](/swagger/v1/swagger.yaml).
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This provides a machine-readable reference that is used to provide documentation.
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It is generated by [rswag](https://github.com/rswag) wich also provides api-tests.
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It can be generated running `RAILS_ENV=test rails rswag`.
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**Note:** the current OAuth scopes may be subject to change, until the next release of Foodsoft.
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## API endpoint documentation
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>> [View API documentation](http://petstore.swagger.io/?url=https%3A%2F%2Fraw.githubusercontent.com%2Ffoodcoops%2Ffoodsoft%2Fmaster%2Fdoc%2Fswagger.v1.yml) <<
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The above documentation can communicate with the API directly on a local development
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installation of Foodsoft at [http://localhost:3000/f](http://localhost:3000/f).
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You'll need to give access to the application first. This can be done by going to
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_Administration_ > _Configuration_ > _Apps_ in Foodsoft. Select _New Application_,
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enter any name, put `http://petstore.swagger.io/oauth2-redirect.html` in _Redirect URI_
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and disable _Confidential_. After submission, you will have an _Application UID_ that
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you can enter that as `client_id` after clicking _Authorize_ in the Swagger UI.
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## Security
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Uses the [Doorkeeper](https://github.com/doorkeeper-gem/doorkeeper) gem,
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which provides an OAuth2 provider.
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### Authorization code flow
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This is the recommended flow for server-side web applications, where
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members login with Foodsoft, then redirected to the app, which then obtains
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an access token using the authorization code supplied at redirection.
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Before you can obtain an access token, the client needs to obtain an id and secret.
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(You can currently skip this for the password credentials flow.) This needs to be
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done for each Foodsoft scope by an admin.
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1. Click on the _Apps_ button at the right in Foodsoft's configuration screen.
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2. Click on _New application_
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3. Enter any _Name_ and put the website of your app in _Redirect URI_ and _Submit_.
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4. Click on the new applications' name for the app id and secret.
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5. To quickly test, logging into the app, press _Authorize_.
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Note that the user doesn't need to confirm that he is giving the app access to his
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Foodsoft account by default, since apps can only be created by admins. If you
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want to change that, see disable `skip_authorization` in `config/initializers/doorkeeper.rb`.
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[Read more](https://github.com/doorkeeper-gem/doorkeeper/wiki/Authorization-Code-Flow).
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### Implicit flow
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This is the recommended flow for client-side web applications. It looks a lot
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like the authorization code flow, but when redirecting back to the app, the
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access token is available directly as part of the url _fragment_ (`window.location.hash`).
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This flow also needs to be registered in Foodsoft as in the authorization code flow,
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but with _Confidential_ disabled. You only need the `client_id`, not the secret.
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**note** please make sure you understand sections
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[4.4.2](http://tools.ietf.org/html/rfc6819#section-4.4.2) and
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[4.4.3](http://tools.ietf.org/html/rfc6819#section-4.4.3) of the OAuth2 Threat
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Model document before using this flow.
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You may find Doorkeeper's [implicit_grant_test](https://github.com/doorkeeper-gem/doorkeeper/blob/master/spec/requests/flows/implicit_grant_spec.rb) useful.
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### Password credentials flow
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To obtain a token using a username/password directly, you can do this:
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```ruby
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require 'oauth2'
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c = OAuth2::Client.new('client_id', 'secret', site: 'http://localhost:3002/f/', authorize_url: 'oauth/authorize', token_url: 'oauth/token')
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c.password.get_token('admin', 'secret').token
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# => "1234567890abcdef1234567890abcdef1234567890abcdef123456790abcdef1"
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```
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Now use this token as value for the `access_token` when accessing the API, like
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http://localhost:3002/f/api/v1/financial_transactions/1?access_token=12345...
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[Read more](https://github.com/doorkeeper-gem/doorkeeper/wiki/Client-Credentials-flow).
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## Logout
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When the user logs out of Foodsoft, all access tokens are destroyed, except when
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the token's scope includes `offline_access` (so offline applications are possible).
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