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Time - Angela #44

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151 changes: 151 additions & 0 deletions rideshare.rb
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# RIDESHARE
# Calculates statistics of rideshare data.

drivers = {
DR0001: [
{
"3rd Feb 2016": [
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One note about a confusing point of Ruby. Even if you use quotes if you use the "key": value syntax instead of the "key" => value the key will wind up a symbol.

Note the : before the quotes in the output.

irb(main):001:0> {"3rd Feb 2016": []}
=> {:"3rd Feb 2016"=>[]}

(Yes, symbols can have spaces, you just need to use quotes after the :.)

{
cost: 10,
rider_id: "RD0003",
rating: 3,
},
{
cost: 30,
rider_id: "RD0015",
rating: 4,
},
],
},
{
"5th Feb 2016": [
{
cost: 45,
rider_id: "RD0003",
rating: 2,
},
],
},
],
DR0002: [
{
"3rd Feb 2016": [
{
cost: 25,
rider_id: "RD0073",
rating: 5,
},
],
},
{
"4th Feb 2016": [
{
cost: 15,
rider_id: "RD0013",
rating: 1,
},
],
},
{
"5th Feb 2016": [
{
cost: 35,
rider_id: "RD0066",
rating: 3,
},
],
},
],
DR0003: [
{
"4th Feb 2016": [
{
cost: 5,
rider_id: "RD0066",
rating: 5,
},
],
},
{
"5th Feb 2016": [
{
cost: 50,
rider_id: "RD0003",
rating: 2,
},
],
},
],
DR0004: [
{
"3rd Feb 2016": [
{
cost: 5,
rider_id: "RD0022",
rating: 5
},
],
},
{
"4th Feb 2016": [
{
cost: 10,
rider_id: "RD0022",
rating: 4
},
],
},
{
"5th Feb 2016": [
{
cost: 20,
rider_id: "RD0073",
rating: 5,
},
],
},
],
}

highest_earner = {
driver: "",
amount_earned: 0,
}

highest_rated = {
driver: "",
rating: 0,
}

puts "STATS PER DRIVER\n**********\n\n"
drivers.each do | driver, workdays |
puts "#{driver} stats:"

# The number of rides each driver has given
ride_count = workdays.sum { |dates, rides| dates.sum { | date, rides | rides.count } }
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Nice use of a block with .sum! This lets you skip using a .map.

This is equivalent to doing:

   ride_count = workdays.map { |dates, rides| dates.sum { | date, rides | rides.count } }.sum

puts "Number of rides given: #{ride_count}"

# The total amount of money each driver has made
money_earned = workdays.sum { |dates, rides| dates.sum { | date, rides | rides.sum { |ride| ride[:cost] } } }
puts "Total earned: $#{money_earned}"
if money_earned > highest_earner[:amount_earned]
highest_earner[:driver] = driver
highest_earner[:amount_earned] = money_earned
end

# Average rating
total_ratings = workdays.sum { |dates, rides| dates.sum { | date, rides | rides.sum { |ride| ride[:rating] } } }
average_rating = (total_ratings.to_f/ride_count.to_f).round(2)
puts "Average rating: #{average_rating}"
if average_rating > highest_rated[:rating]
highest_rated[:driver] = driver
highest_rated[:rating] = average_rating
end
puts "\n"
end

# Which driver made the most money?
puts "\nHighest earner: #{highest_earner[:driver]}"

# Which driver has the highest average rating?
puts "Highest rated: #{highest_rated[:driver]}"