Claudio Ortolina
40 lines
925 B
Elixir
40 lines
925 B
Elixir
defmodule MusicLibraryWeb.Duration do
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def format_duration(milliseconds) do
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milliseconds
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|> System.convert_time_unit(:millisecond, :second)
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|> format_seconds()
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end
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defp format_seconds(seconds) when seconds <= 59 do
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"0:#{zero_pad(seconds)}"
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end
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defp format_seconds(seconds) do
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minutes = div(seconds, 60)
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remaining_seconds = rem(seconds, 60)
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format_minutes(minutes, remaining_seconds)
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end
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defp format_minutes(minutes, seconds) when minutes <= 59 do
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"#{minutes}:#{zero_pad(seconds)}"
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end
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defp format_minutes(minutes, seconds) do
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hours = div(minutes, 60)
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remaining_minutes = rem(minutes, 60)
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format_hours(hours, remaining_minutes, seconds)
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end
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defp format_hours(hours, minutes, seconds) do
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"#{hours}:#{zero_pad(minutes)}:#{zero_pad(seconds)}"
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end
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defp zero_pad(integer) do
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integer
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|> to_string()
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|> String.pad_leading(2, "0")
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end
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end
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