lib/stats.rb

   1 # frozen_string_literal: true
   2
   3 require "sqlite3"
   4
   5 require "database"
   6 require "gtfs"
   7 require "pry"
   8
   9 class Stats
  10   # Warning:  doesn't account for leap years
  11   #                     J   F   M   A   M   J   J   A   S   O   N   D
  12   DAYS_IN_MONTH = [nil, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
  13
  14   def initialize
  15     @db = Database.new.db
  16     @gtfs = Gtfs.new
  17   end
  18
  19   def report(year:)
  20     route_totals = {}
  21
  22     (1..12).each do |month|
  23       last_day = DAYS_IN_MONTH[month]
  24       last_day += 1 if (month == 2) && (0 == year % 4) # leap year (doesn't account for 2000)
  25
  26       (1..last_day).each do |day|
  27         date_hash = {year: year, month: month, day: day}
  28         date_string = "#{year}-#{month.to_s.rjust(2, "0")}-#{day.to_s.rjust(2, "0")}"
  29
  30         counts = trip_counts(date_hash: date_hash)
  31
  32         daily_total = 0
  33         counts.each do |route, count|
  34           route_total = route_totals[route] || 0
  35           route_total += count
  36           route_totals[route] = route_total
  37
  38           daily_total += count
  39         end
  40
  41         puts "#{date_string};#{daily_total};#{counts.inspect}"
  42       end
  43     end
  44
  45     annual_total = 0
  46     route_totals.each do |_route, count|
  47       annual_total += count
  48     end
  49
  50     puts "ANNUAL_TOTAL;#{annual_total};#{route_totals.inspect}"
  51   end
  52
  53   def route_origin_stop_ids
  54     @route_origin_stop_ids ||= @db.query(
  55       "SELECT stop_id FROM stop_times WHERE stop_sequence=1 GROUP BY 1 ORDER BY 1;"
  56     ).to_a.flatten
  57   end
  58
  59   # Returns a hash of route_num => trip_count for the given date
  60   def trip_counts(date_hash: nil)
  61     result = {}
  62
  63     print "Checking for trips on #{date_hash[:year]}-#{date_hash[:month]}-#{date_hash[:day]}"
  64
  65     route_origin_stop_ids.each do |stop_id|
  66       print "."
  67       $stdout.flush
  68
  69       route_trips = @gtfs.trips(stop_id: stop_id, date_hash: date_hash).map do |k, v|
  70         [
  71           k.first,
  72           v.map do |x|
  73             x.first
  74           end,
  75         ]
  76       end.to_h.each do |route, trips|
  77         count = result[route] || 0
  78         count += trips.count
  79         result[route] = count
  80       end
  81     end
  82     puts " done."
  83
  84     result
  85   end
  86 end