179 bug UI projects not calling fastapi projects endpoint

[atriaybagur]

Test using the following in FLIP UI Docker image in deploy/compose.production.yml :

image: ghcr.io/londonaicentre/flip-ui:179

(built in this workflow run)

Now the UI page https://stag.flip.aicentre.co.uk/projects calls the flip-api endpoint:

      INFO   10.0.2.247:56476 - "GET /projects/?pageNumber=1&pageSize=20        
             HTTP/1.1" 200

Fixes /projects page, /users page, cohort queries (/step routers)

---

⚠️ note in the future we could have all of the backend endpoints under /api/* -- then the listener becomes much simpler and avoids conflicts with frontend -- it's also more maintainable if we add new routes !

Right now main.tf is compensating for a design issue: the SPA and API both live at the site root, so routes like /projects, /model, /trust, /step/... keep colliding. Putting the API under /api/* would let the ALB use essentially one rule for the app API and avoid all these special cases.

condition {
  path_pattern {
    values = ["/api/*", "/docs", "/openapi.json", "/redoc"]
  }
}

---

Trained the spleen segmentation model end-to-end:

---

This pull request introduces several improvements and fixes across the infrastructure, backend, frontend, and test codebases. The main focus is on standardizing API endpoint paths (especially adding trailing slashes for collection endpoints), improving listener rule routing in AWS Terraform configuration, and enhancing robustness and error handling for trust-related features. These changes help ensure consistent API behavior, better routing, and more reliable UI and backend interactions.

Infrastructure and API Routing

• Updated AWS Load Balancer listener rules in main.tf to use more specific path patterns for API endpoints, including splitting role endpoints into their own rule and expanding trust/site/step endpoint coverage. This improves routing precision and maintainability. [1] [2]
• Standardized collection endpoint paths for /users, /projects, and /roles to always include a trailing slash in listener rules, aligning with SPA routing requirements and preventing conflicts between frontend and backend routes.

Frontend Consistency and Robustness

• Updated all frontend API calls for /users, /projects, and /roles to use trailing slashes for collection endpoints, ensuring consistency with backend routing and preventing subtle bugs. [1] [2] [3] [4]
• Improved trust-related UI components and services to handle cases where the trust list is not an array, preventing errors and ensuring graceful fallback. [1] [2]

Test Suite Updates

• Updated Cypress test intercepts to match new API endpoint conventions (trailing slashes), ensuring tests accurately reflect actual API usage and routing. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18]

Backend Error Handling

• Improved exception handling in trust seeding logic to log a generic message when an endpoint is missing, avoiding leaking exception details and simplifying log output. Corresponding test assertion updated for new log message. [1] [2]

[codecov]

Codecov Report

❌ Patch coverage is 88.23529% with 2 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
flip-ui/public/js/window.js	0.00%	1 Missing ⚠️
flip-ui/src/services/trust-service.ts	0.00%	1 Missing ⚠️

📢 Thoughts on this report? Let us know!

[Copilot]

Pull request overview

This PR standardizes the CentralHub API under a shared /api namespace and updates UI configuration, automated tests, and AWS deployment routing to match the new URL structure.

Changes:

• Mount all flip-api routers under /api and move health/docs endpoints to /api/*.
• Update flip-ui and environment/config docs to treat the backend base URL as including /api.
• Update API consumer tests (unit/integration) and AWS ALB routing/health checks to use /api/*.

Reviewed changes

Copilot reviewed 48 out of 49 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
flip-ui/test/cypress/support/globalIntercepts.ts	Cypress intercept stubs for UI E2E tests (currently still using unprefixed paths).
flip-ui/src/services/trust-service.ts	Adds defensive handling when /trust response is not an array.
flip-ui/src/partials/projects/ProjectStaging.vue	Adds defensive handling when trustStore.getTrusts is not an array.
flip-ui/README.md	Clarifies VITE_AWS_BASE_URL should include /api.
flip-ui/public/js/window.js	Updates default runtime AWS_BASE_URL to include /api.
flip-ui/CONTRIBUTING.md	Updates local setup docs to use /api in VITE_AWS_BASE_URL.
flip-ui/api/server.ts	Minor formatting cleanup in mock server routes.
flip-api/tests/unit/user_services/test_update_user.py	Updates test endpoints to /api/*.
flip-api/tests/unit/user_services/test_get_users.py	Updates test endpoints to /api/*.
flip-api/tests/unit/user_services/test_access_request.py	Updates test endpoints to /api/*.
flip-api/tests/unit/trusts_services/test_trusts_health_check.py	Updates test endpoints to /api/*.
flip-api/tests/unit/trusts_services/test_get_trusts.py	Updates test endpoints to /api/*.
flip-api/tests/unit/site_services/test_details.py	Updates test endpoints to /api/*.
flip-api/tests/unit/project_services/test_unstage_project.py	Adds /api router prefix in fixture and updates test endpoints.
flip-api/tests/unit/project_services/test_stage_project.py	Adds /api router prefix in fixture and updates test endpoints.
flip-api/tests/unit/project_services/test_get_project.py	Updates test endpoints to /api/*.
flip-api/tests/unit/project_services/test_get_project_approved_trusts.py	Adds /api router prefix in fixture and updates test endpoints.
flip-api/tests/unit/project_services/test_get_models.py	Adds /api router prefix in fixture and updates test endpoints.
flip-api/tests/unit/project_services/test_get_imaging_project_status.py	Adds /api router prefix in fixture; updates invalid UUID expectation to 422.
flip-api/tests/unit/project_services/test_delete_project.py	Updates test endpoints to /api/*.
flip-api/tests/unit/private_services/test_save_training_metrics.py	Updates test endpoints to /api/*.
flip-api/tests/unit/private_services/test_invoke_model_status_update.py	Adds /api router prefix in fixture and updates test endpoints.
flip-api/tests/unit/model_services/test_update_model_status.py	Updates test endpoints to /api/*.
flip-api/tests/unit/model_services/test_save_model.py	Updates test endpoints to /api/*.
flip-api/tests/unit/model_services/test_retrieve_trusts_in_model.py	Updates test endpoints to /api/*.
flip-api/tests/unit/model_services/test_retrieve_logs_for_model.py	Updates test endpoints to /api/*.
flip-api/tests/unit/model_services/test_get_metrics.py	Updates test endpoints to /api/*.
flip-api/tests/unit/model_services/test_edit_model.py	Updates test endpoints to /api/*.
flip-api/tests/unit/model_services/test_delete_model.py	Updates test endpoints to /api/*.
flip-api/tests/unit/file_services/test_retrieve_federated_results.py	Updates test endpoints to /api/*.
flip-api/tests/unit/db/seed/test_trusts.py	Updates expected log message for skipped trust seeding.
flip-api/tests/step_functions_services/test_retrieve_model_step_function.py	Updates test endpoints to /api/*.
flip-api/tests/step_functions_services/test_register_user_step_function.py	Updates test endpoints to /api/*.
flip-api/tests/step_functions_services/test_cohort_query_step_function.py	Updates test endpoints to /api/*.
flip-api/tests/step_functions_services/test_approve_project_step_function.py	Updates test endpoints to /api/*.
flip-api/tests/integration/test_user_registration_real_api.py	Updates integration test endpoint to /api/*.
flip-api/tests/integration/test_retrieve_uploaded_file_info.py	Updates integration test endpoint to /api/*.
flip-api/src/flip_api/utils/constants.py	Updates test base URL constant to include /api.
flip-api/src/flip_api/user_services/get_users.py	Changes route path from / to empty path under router prefix (to avoid trailing slash).
flip-api/src/flip_api/role_services/get_roles.py	Changes route path from / to empty path under router prefix (to avoid trailing slash).
flip-api/src/flip_api/project_services/get_projects.py	Changes route path from / to empty path under router prefix (to avoid trailing slash).
flip-api/src/flip_api/project_services/create_project.py	Changes route path from / to empty path under router prefix (to avoid trailing slash).
flip-api/src/flip_api/main.py	Introduces API_PREFIX = /api, mounts all routers under it, and moves root/health/docs/openapi under /api/*.
flip-api/src/flip_api/db/seed/trusts.py	Broadens exception handling/logging during trust seeding (now swallows all exceptions).
flip-api/src/flip_api/config.py	Updates test-only FLIP_API_URL default to include /api.
deploy/providers/AWS/update_env.py	Updates CENTRAL_HUB_API_URL to include /api.
deploy/providers/AWS/main.tf	Updates ALB routing to forward /api namespace and sets target group health check to /api/health.
deploy/providers/AWS/check_status.py	Updates health/docs checks to /api/*.
.env.development.example	Updates example UI/API base URLs to include /api.