sequenceDiagram
    participant User
    participant REANA UI
    participant REANA Server
    participant GitLab
    participant CERN SSO
    User->>REANA UI: login
    REANA UI-->>User: redirect to cern
    User->>CERN SSO: cern login
    CERN SSO-->>REANA Server: cern authentication
    REANA Server->>REANA UI: redirect to the UI
    User->>REANA UI: gitlab authorization
    REANA UI-->>User: redirect to gitlab
    User->>GitLab: gitlab authorization
    GitLab-->>REANA Server: gitlab authorization
    REANA Server->>REANA UI: redirect to the UI
    REANA UI->>REANA Server: request user projects
    REANA Server->> GitLab: request user projects
    GitLab-->>REANA Server: return user projects
    REANA Server->>REANA UI: display projects
    User->>REANA UI: select project
    REANA UI->>REANA Server: select project
    REANA Server->>GitLab: setup webhook
    User->>GitLab: project commit
    GitLab-->>REANA Server: trigger workflow execution
    REANA Server->>GitLab: update commit status
    GitLab-->>User: send commit status notification
    User->>REANA UI: request logs
    REANA UI->>REANA Server: request logs
    REANA Server-->>REANA UI: display logs