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#!/usr/bin/env ruby
require 'sqlite3'
def main
db = SQLite3::Database.new ARGV[0]
devices = db.execute "select distinct device_location_primary, device_location_secondary FROM power"
puts devices.to_s
exit
devices.reject! { |i| not ["office", "living_room", "guest_restroom", "kitchen", "bedroom_2"].include? i[0] }
start_date = Date.new(2021,01,01).to_time.to_i
end_date = Date.new(2021,01,30).to_time.to_i
totals = {}
totals.default = 0.0
devices.sort_by{|i| i[0] }.each { |device|
puts "select TOTAL, TIMESTAMP from power WHERE TIMESTAMP >= #{start_date} and TIMESTAMP <= #{end_date} AND DEVICE_LOCATION_PRIMARY = '#{device[0]}' AND DEVICE_LOCATION_SECONDARY = '#{device[1]}' ORDER BY TIMESTAMP ASC LIMIT 1"
exit
first = db.execute "select TOTAL, TIMESTAMP from power WHERE TIMESTAMP >= #{start_date} and TIMESTAMP <= #{end_date} AND DEVICE_LOCATION_PRIMARY = '#{device[0]}' AND DEVICE_LOCATION_SECONDARY = '#{device[1]}' ORDER BY TIMESTAMP ASC LIMIT 1"
last = db.execute "select TOTAL, TIMESTAMP from power WHERE TIMESTAMP >= #{start_date} and TIMESTAMP <= #{end_date} AND DEVICE_LOCATION_PRIMARY = '#{device[0]}' AND DEVICE_LOCATION_SECONDARY = '#{device[1]}' ORDER BY TIMESTAMP DESC LIMIT 1"
if first.size > 0 and last.size > 0
#puts "#{Time.at(first[0][1])} --- #{Time.at(last[0][1])}"
#puts "#{first[0][0]} ::: #{last[0][0]}"
kwh = last[0][0] - first[0][0]
#puts "#{device.join '/'}: #{kwh.round 0} kW/h"
#puts
totals[device[0]] += kwh
end
}
puts "TOTAL for #{start_date} - #{end_date}: #{totals.values.inject(:+).round 0} kW/h"
puts "\nBy Room"
puts "-------"
totals.each_key { |k|
puts " #{k}: #{totals[k].round 0} kW/h"
}
db.close
end
main
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