Trello Downloader

Uses trello to manage state in the cloud for my download system

Process flow

Gather required variables
- trello
  - api keys
  - mapping of list names to specific states
  - board to manage
- mananged labels
  - label name
  - label key (if not matching the label name)
  - associated service
- services
  - name
  - urls
    - search
    - add
    - webhook(?): depends on how that service sends back events
register webhook with trello for human events
create http mux to handle trello webhook requests
- for each webhook request
  - validate webhook signature
  - filter out those requests that are:
    - not made by humans?
    - not in the relavant lists
check the state of the current board:
- verify the state of the items
  - within the lists specified
  - where the cards in those lists meet the minimum requirements (label, title)
periodicly verify the state of the board against the state of the application.