logic_engine.coffee

ANY = "ANY"
# Public: Logic engine
#
# args: the criteria to match against
#
# Examples
#
#   args = {noncitizen: true, in_prison: false, term_served: true, paroled: true, on_probation: false, fines_paid: true, num_years_since_release: 5, felony_type: "robbery"}
#   Engine.check(args)
#   # => ["alabama"]
#
# Returns the states that fit the criteria
class Engine
  # state, noncitizen, in_prison, term_served, paroled, on_probation, fines_paid, num_years_since_release
  @voter_profiles: [
    ["alabama", false, false, true, true, false, ANY, ANY],
    ["alaska", false, false, true, true, false, ANY, ANY],
    ["arizona", false, false, true, ANY, ANY, ANY, ANY],
    ["arkansas", false, false, true, true, false, ANY, ANY],
    ["california", false, false, true, true, ANY, ANY, ANY],
    ["colorado", false, false, true, true, ANY, ANY, ANY],
    ["connecticut", false, false, true, true, ANY, ANY, ANY],
    ["delaware", false, false, true, true, false, ANY, ANY],
    ["district_of_columbia", false, false, true, ANY, ANY, ANY, ANY],
    ["florida", false, false, true, true, false, ANY, ANY],
    ["georgia", false, false, true, true, false, ANY, ANY],
    ["hawaii", false, false, true, ANY, ANY, ANY, ANY],
    ["idaho", false, false, true, true, false, ANY, ANY],
    ["illinois", false, false, true, ANY, ANY, ANY, ANY],
    ["indiana", false, false, true, ANY, ANY, ANY, ANY],
    ["iowa", false, false, true, true, false, true, ANY],
    ["kansas", false, false, true, true, false, ANY, ANY],
    ["kentucky", false, false, true, true, false, ANY, ANY],
    ["louisiana", false, false, true, true, false, ANY, ANY],
    ["maine", false, ANY, ANY, ANY, ANY, ANY, ANY],
    ["maryland", false, false, true, true, false, ANY, ANY],
    ["massachusetts", false, false, true, ANY, ANY, ANY, ANY],
    ["michigan", false, false, true, ANY, ANY, ANY, ANY],
    ["minnesota", false, false, true, true, false, ANY, ANY],
    ["mississippi", false, false, true, true, false, ANY, ANY],
    ["missouri", false, false, true, true, false, ANY, ANY],
    ["montana", false, false, true, ANY, ANY, ANY, ANY],
    ["nebraska", false, false, true, true, false, ANY, 2],
    ["nevada", false, false, true, ANY, ANY, ANY, ANY],
    ["new_hampshire", false, false, true, ANY, ANY, ANY, ANY],
    ["new_jersey", false, false, true, true, false, ANY, ANY],
    ["new_mexico", false, false, true, true, false, ANY, ANY],
    ["new_york", false, false, true, true, ANY, ANY, ANY],
    ["north_carolina", false, false, true, true, false, ANY, ANY],
    ["north_dakota", false, false, true, ANY, ANY, ANY, ANY],
    ["ohio", false, false, true, ANY, ANY, ANY, ANY],
    ["oklahoma", false, false, true, true, false, ANY, ANY],
    ["oregon", false, false, true, ANY, ANY, ANY, ANY],
    ["pennsylvania", false, false, true, ANY, ANY, ANY, ANY],
    ["rhode_island", false, false, true, ANY, ANY, ANY, ANY],
    ["south_carolina", false, false, true, true, false, ANY, ANY],
    ["south_dakota", false, false, true, true, false, ANY, ANY],
    ["tennessee", false, false, true, true, false, ANY, 2],
    ["texas", false, false, true, true, false, ANY, ANY],
    ["utah", false, false, true, ANY, ANY, ANY, ANY],
    ["vermont", false, ANY, ANY, ANY, ANY, ANY, ANY],
    ["virginia", false, false, true, true, false, ANY, ANY],
    ["washington", false, false, true, true, false, ANY, ANY],
    ["west_virginia", false, false, true, true, false, ANY, ANY],
    ["wisconsin", false, false, true, true, false, ANY, ANY],
    ["wyoming", false, false, true, true, false, ANY, 5]
  ]
  @egregious_felonies:
    "alabama": ["murder", "rape", "incest", "sexual_crime_against_children"]
    "delaware": ["murder", "bribery", "manslaughter", "abuse_of_office"]
    "florida": ["everything"]
    "kentucky": ["everything"]
    "mississippi": ["everything"]
    "nebraska": ["treason"]
    "tennessee": ["murder", "rape", "treason", "voter_fraud"]
    "virginia": ["murder", "rape"]
    "wyoming": ["murder", "rape"]

  @check: (opts)->
    a = _.defaults(opts, {noncitizen: false, in_prison: false, term_served: true, paroled: ANY, on_probation: false, fines_paid: ANY, num_years_since_release:  ANY, "felony_type[]": ANY})
    arglist = [a["noncitizen"], a["in_prison"], a["term_served"], a["paroled"], a["on_probation"], a["fines_paid"], a["num_years_since_release"]]
    @find(a["felony_type[]"],arglist)

  @find: (felony_type,arglist)->
    states = []
    felonies = @egregious_felonies
    _.each(@voter_profiles, (profile)->
        [state, rules] = [_.first(profile), _.rest(profile)]
        # Comparing the rule to the corresponding value in the arglist. If the rule and arglist value match, continue as normal. If either of the rules are ANY, then continue as normal. Next, make sure that the felony, if it exists, is not in egregious felonies list.
        release_rule_index = rules.length - 1
        validator = (rule,i)->
          return true if arglist[i] == ANY or rule == ANY
          if i is release_rule_index
            # the num_years_since_release require a gtd check
            arglist[i] >= rule or isNaN(parseInt(arglist[i]))
          else
            arglist[i] == rule

        bad_felony_done = (felonies[state] and _.some(felony_type, ((f)->_.contains(felonies[state],f)))) || false
        # When the iteration is complete, if no rules have been violated, then add the state into the states array.
        states.push(state) if(_.every(rules, validator) and !bad_felony_done)
      )
    states