TODO app using liveview and rest.

Endpoints

to view the liveview code, visit http://localhost:4000/live
to view the REST API code, visit http://localhost:4000/rest

To start your Phoenix server:

Install dependencies with mix deps.get
Create and migrate your database with mix ecto.setup
Start Phoenix endpoint with mix phx.server or inside IEx with iex -S mix phx.server

Assumptions.

Data is seeded. or already exist in the DB. There is not API to create group/task. We can only view or take action on the tasks.
Once a parent task is completed. dependant task cannot be marked as incomplete.
OpenAPIspec does not apply since these are not Json APIs, hence @spec exists only for model and context.