# LTI Connector

[LTI](https://www.imsglobal.org/spec/lti/v1p3#platforms-and-tools) implementation

## Works with

CakePHP Plugin [repository](https://gitlab.com/eduplex-api/cake-api-lti) to run on top of [cake-rest-api](https://packagist.org/packages/freefri/cake-rest-api).

## Openapi documentation

Swagger UI in [/api/v3/lti/openapi/](https://proto.eduplex.eu/api/v3/lti/openapi/)

## Demo Tool workflow

Here is a flowchart of the launch process:

{% @mermaid/diagram content="sequenceDiagram
title LTI demo launch flow
participant User as User
participant Platform as LTI Platform<br>(Tool Consumer)
participant Tool as LTI Tool<br>(Tool Provider)
User->>Platform: Access Tool via iframe
Platform->>Tool: Render iframe in loginUrl
Note right of Tool: Params: <br> iss <br> lti\_deployment\_id <br> client\_id <br> target\_link\_uri (redirect URI)
Tool->>Tool: do\_oidc\_login\_redirect()
Tool->>Platform: Redirect to Platform loginUrl(client\_id, redirect\_uri)
Note left of Platform: Params: <br> scope <br> response\_type <br> response\_mode <br> prompt <br> client\_id <br> redirect\_uri <br> state <br> nonce
Platform->>Tool: Post form to redirect\_uri
Note right of Tool: Params: <br> state <br> id\_token (JWT)
Tool->>Tool: Validate JWT (LtiMessageLaunch)" %}

## License

The source code for the site is licensed under the [**MIT license**](https://gitlab.com/eduplex-api), which you can find in the [LICENSE](https://gitlab.com/eduplex-api/cake-api-lti/-/blob/main/LICENSE/README.md) file.