This PR adds the possibility of creating new steps. For now, only
actions are available. The steps are stored on the server, and the
visualizer is reloaded to include them.
Selecting a step opens the right drawer and shows its details. For now,
it's only the id of the step, but in the future, it will be the
parameters of the step.
In the future we'll want to let users add steps at any point in the
diagram. As a consequence, it's crucial to be able to walk in the tree
that make the steps to find the correct place where to put the new step.
I wrote a function that returns where the new step should be inserted.
This function will become recursive once we get branching implemented.
Things to mention:
- Reactflow needs every node and edge to have a unique identifier. In
this PR, I chose to use steps' id as nodes' id. That way, it's easy to
move from a node to a step, which helps make operations on a step
without resolving the step's id from the node's id.
## Features
- Fetch a workflow and display it in a tree with the React Flow library
- The nodes are positioned by an algorithm
- The feature is put behind a feature flag. The `/workflow/:id` route is
disabled if the flag is off.
- I started implementing a right drawer. That's a big WIP and it will be
finished in another PR.
## How to test this feature
1. Create a workflow instance in the database through a GraphQL query.
See below for instructions.
2. After enabling the feature flag, you should be able to see the
workflow you created in the workflows list. To visualize the workflow,
go to the `/workflow/:id` page where the id is the id of the workflow.
See the video for a quick way to do so.
```gql
// First
mutation createWorkflow($data: WorkflowCreateInput!) {
createWorkflow(data: $data) {
id
}
}
// Result
{
"data": {
"name": "test"
}
}
// Second
mutation createWorkflowVersion($data: WorkflowVersionCreateInput!) {
createWorkflowVersion (data: $data) {
id
}
}
// Result
{
"data": {
"name": "v1",
"trigger": {
"name": "trigger",
"displayName": "New or Updated Row",
"type": "DATABASE_EVENT",
"settings": {
"eventName": "company.created",
"triggerName": "Company Created"
},
"nextAction": {
"name": "step_1",
"displayName": "Code",
"type": "CODE",
"valid": true,
"settings": {
"serverlessFunctionId": "function_id",
"errorHandlingOptions": {
"retryOnFailure": {
"value": false
},
"continueOnFailure": {
"value": false
}
}
}
}
},
"workflowId": "workflow_id"
}
}
```
https://github.com/user-attachments/assets/42bbd98c-5e13-447c-9307-461a18ac2195
