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Program to find most expensive click #4

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Program to find most expensive click #4

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d028e95
Add program to find most expensive click
bhanu-atwork Aug 31, 2021
22abb31
Remove last comma from json
bhanu-atwork Aug 31, 2021
4668cd0
Adding period value to timestamp in case of equal amount
bhanu-atwork Aug 31, 2021
7bd1e96
Partial refactor as per rubocop
bhanu-atwork Aug 31, 2021
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94 changes: 94 additions & 0 deletions ruby/programs/click_handler/click_handler.rb
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# frozen_string_literal: true

require 'json'
require 'date'

# Class having json file operations
class JsonFilehandler
def self.read_file(path)
File.open(path).read
end

def self.write_file(path, res)
File.open(path, 'w+') do |f|
f.write("[\n")
res.each_with_index do |click, idx|
key_val = click.map { |k, v| "#{k.to_json}:#{v.to_json}" }.join(', ')
result = "{ #{key_val} }\n"
result += ',' if idx != res.size - 1
f.write(result)
end
f.write(']')
end
end
end

# Class having all data parsing operations
class Parser
def self.to_json(file_data)
JSON.parse(file_data)
end

def self.collect_valid_clicks(click_data)
click_freq = Hash.new(0)
click_data.each { |ele| click_freq[ele['ip']] += 1 }
# Remove all IPs with clicks greater than 10
click_freq.each { |k, v| click_freq.delete(k) if v >= 10 }
click_ips = click_freq.keys
click_data.select { |ele| click_ips.include?(ele['ip']) }
end

def self.clicks_per_period(valid_clicks)
ip_amt_per_period = {}
ip_timestamp_per_period = {}
valid_clicks.each do |click|
period = DateTime.parse(click['timestamp']).hour
if ip_amt_per_period.key?(click['ip'])
if ip_amt_per_period[click['ip']].key?(period) && ip_amt_per_period[click['ip']][period] < click['amount']
ip_amt_per_period[click['ip']][period] = click['amount']
ip_timestamp_per_period[click['ip']].merge!({ period => click['timestamp'] })
elsif ip_amt_per_period[click['ip']].key?(period) && ip_amt_per_period[click['ip']][period] > click['amount']
next
elsif ip_amt_per_period[click['ip']].key?(period) && ip_amt_per_period[click['ip']][period] == click['amount']
if DateTime.parse(click['timestamp']) < DateTime.parse(ip_time)
ip_timestamp_per_period[click['ip']][period] = click['timestamp']
end
else
ip_amt_per_period[click['ip']].merge!({ period => click['amount'] })
ip_timestamp_per_period[click['ip']].merge!({ period => click['timestamp'] })
end

else
ip_amt_per_period[click['ip']] = {}
ip_timestamp_per_period[click['ip']] = {}
ip_amt_per_period[click['ip']][period] = click['amount']
ip_timestamp_per_period[click['ip']][period] = click['timestamp']
end
end
[ip_amt_per_period, ip_timestamp_per_period]
end

def self.form_output_array(ip_amt_per_period, ip_timestamp_per_period)
res = []
ip_amt_per_period.each do |k, v|
v.each do |period, value|
res.push({ 'ip' => k, 'timestamp' => ip_timestamp_per_period[k][period], 'amount' => value })
end
end
res
end
end

# Class having main handler for finding most expensive click
class ClickHandler
def self.main
file_data = JsonFilehandler.read_file('clicks.json')
click_data = Parser.to_json(file_data)
valid_clicks = Parser.collect_valid_clicks(click_data)
ip_amt_per_period, ip_timestamp_per_period = Parser.clicks_per_period(valid_clicks)
res = Parser.form_output_array(ip_amt_per_period, ip_timestamp_per_period)
JsonFilehandler.write_file('result.json', res)
end
end

ClickHandler.main
34 changes: 34 additions & 0 deletions ruby/programs/click_handler/clicks.json
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[
{ "ip":"22.22.22.22", "timestamp":"3/11/2020 02:02:58", "amount": 7.00 },
{ "ip":"11.11.11.11", "timestamp":"3/11/2020 02:12:32", "amount": 6.50 },
{ "ip":"11.11.11.11", "timestamp":"3/11/2020 02:13:11", "amount": 7.25 },
{ "ip":"44.44.44.44", "timestamp":"3/11/2020 02:13:54", "amount": 8.75 },
{ "ip":"22.22.22.22", "timestamp":"3/11/2020 05:02:45", "amount": 11.00 },
{ "ip":"44.44.44.44", "timestamp":"3/11/2020 06:32:42", "amount": 5.00 },
{ "ip":"22.22.22.22", "timestamp":"3/11/2020 06:35:12", "amount": 2.00 },
{ "ip":"11.11.11.11", "timestamp":"3/11/2020 06:45:01", "amount": 12.00 },
{ "ip":"11.11.11.11", "timestamp":"3/11/2020 06:59:59", "amount": 11.75 },
{ "ip":"22.22.22.22", "timestamp":"3/11/2020 07:01:53", "amount": 1.00 },
{ "ip":"11.11.11.11", "timestamp":"3/11/2020 07:02:54", "amount": 4.50 },
{ "ip":"33.33.33.33", "timestamp":"3/11/2020 07:02:54", "amount": 15.75 },
{ "ip":"66.66.66.66", "timestamp":"3/11/2020 07:02:54", "amount": 14.25 },
{ "ip":"22.22.22.22", "timestamp":"3/11/2020 07:03:15", "amount": 12.00 },
{ "ip":"22.22.22.22", "timestamp":"3/11/2020 08:02:22", "amount": 3.00 },
{ "ip":"22.22.22.22", "timestamp":"3/11/2020 09:41:50", "amount": 4.00 },
{ "ip":"22.22.22.22", "timestamp":"3/11/2020 10:02:54", "amount": 5.00 },
{ "ip":"22.22.22.22", "timestamp":"3/11/2020 11:05:35", "amount": 10.00 },
{ "ip":"22.22.22.22", "timestamp":"3/11/2020 13:02:21", "amount": 6.00 },
{ "ip":"55.55.55.55", "timestamp":"3/11/2020 13:02:40", "amount": 8.00 },
{ "ip":"44.44.44.44", "timestamp":"3/11/2020 13:02:55", "amount": 8.00 },
{ "ip":"55.55.55.55", "timestamp":"3/11/2020 13:33:34", "amount": 8.00 },
{ "ip":"55.55.55.55", "timestamp":"3/11/2020 13:42:24", "amount": 8.00 },
{ "ip":"55.55.55.55", "timestamp":"3/11/2020 13:47:44", "amount": 6.25 },
{ "ip":"55.55.55.55", "timestamp":"3/11/2020 14:02:54", "amount": 4.25 },
{ "ip":"55.55.55.55", "timestamp":"3/11/2020 14:03:04", "amount": 5.25 },
{ "ip":"55.55.55.55", "timestamp":"3/11/2020 15:12:55", "amount": 6.25 },
{ "ip":"22.22.22.22", "timestamp":"3/11/2020 16:02:36", "amount": 8.00 },
{ "ip":"55.55.55.55", "timestamp":"3/11/2020 16:22:11", "amount": 8.50 },
{ "ip":"55.55.55.55", "timestamp":"3/11/2020 17:18:19", "amount": 11.25 },
{ "ip":"55.55.55.55", "timestamp":"3/11/2020 18:19:20", "amount": 9.00 },
{ "ip":"22.22.22.22", "timestamp":"3/11/2020 23:59:59", "amount": 9.00 }
]
10 changes: 10 additions & 0 deletions ruby/programs/click_handler/result.json
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[
{ "ip":"11.11.11.11", "timestamp":"3/11/2020 02:13:11", "amount":7.25 }
,{ "ip":"11.11.11.11", "timestamp":"3/11/2020 06:45:01", "amount":12.0 }
,{ "ip":"11.11.11.11", "timestamp":"3/11/2020 07:02:54", "amount":4.5 }
,{ "ip":"44.44.44.44", "timestamp":"3/11/2020 02:13:54", "amount":8.75 }
,{ "ip":"44.44.44.44", "timestamp":"3/11/2020 06:32:42", "amount":5.0 }
,{ "ip":"44.44.44.44", "timestamp":"3/11/2020 13:02:55", "amount":8.0 }
,{ "ip":"33.33.33.33", "timestamp":"3/11/2020 07:02:54", "amount":15.75 }
,{ "ip":"66.66.66.66", "timestamp":"3/11/2020 07:02:54", "amount":14.25 }
]