42 lines
1023 B
Elixir
42 lines
1023 B
Elixir
defmodule BoutiqueInventory do
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def sort_by_price(inventory) do
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Enum.sort_by(inventory, & &1[:price])
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end
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def with_missing_price(inventory) do
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Enum.filter(inventory, &(!&1[:price]))
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end
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def update_names(inventory, old_word, new_word) do
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inventory
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|> Enum.map(fn item ->
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new_name = String.replace(item.name, old_word, new_word)
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%{item | name: new_name}
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end)
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end
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def increase_quantity(item, count) do
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item
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|> Map.get_and_update(:quantity_by_size, fn quantities ->
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{quantities, update_quantities(quantities, count)}
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end)
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|> elem(1)
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end
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defp update_quantities(quantities, count) do
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quantities
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|> Map.to_list()
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|> Enum.map(&increase_size_quantity(&1, count))
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|> Enum.into(%{})
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end
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defp increase_size_quantity({key, value}, count), do: {key, value + count}
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def total_quantity(item) do
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item.quantity_by_size
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|> Enum.reduce(0, &sum_total_quantity/2)
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end
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defp sum_total_quantity({_key, value}, acc), do: acc + value
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end
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