## New Plans Application

An NPA models the workflow of an ER applying for new benefits with Gusto.

### State Transitions
#### Main state flow
- `:selecting_employee_eligibility`
- `:receiving_medical_education`
- `:selecting_base_tier`
- `:selecting_base_plan`
- `:selecting_complementary_plans`
- `:selecting_non_medical_plans`
- `:collecting_company_information`
- `:reviewing_summary`
- `:confirm_application`
- `:verifying_eligibility`
- `completed`

#### Linear flow
- The states can go back and forth as ER steps through the different steps in UI.
- Once the state of `:verifying_eligibility` is reached, however, the ER cannot go back to previous steps.

#### Nonlinear flow
- Can go back to `:selecting_base_plan` from `:verifying_elibility` or `:completed` if ???
- On Hippo, this is the UI that says "unlock"

#### Additional states
- `dismissed` - ER abandons NPA
- `expired` - a way to allow subsequent NPAs

### Tables
- There is a single-table inheritance involving `BenefitsTypeOfferings`, with the `type` column describing which inherited class the instance belongs to, and also an `owner` column for polymorphic association with New Plans,
Renewal, Benefit Change Application
  - What is a Benefit Change Application? Is that the same as a BoR?

### Downstream effects of an NPA
- As part of the ER going through the NPA flow, we generate benefit offerings for the company using `NewPlansApplication::RecommendationEngine`
  - This results in `benefit_type_offerings` and `new_benefit_type_offerings` (?) What's the difference?
- An offering is associated with one or more benefits plans, which the ER can select in the NPA flow
- The selected plans can be viewed in Hippo by CX in `/company/<company id>/new_plans_applications/<npa id>`
- CX takes the completed NPA and fulfills it
  - The company now has a benefits package (the benefits package is associted with one company
    (there is also an association between an NPA and a benefits package)
  - The benefits package has one or more policies
  - Via selection, EEs in the company can choose one or more policies
  - Selection of policy results in a subscription