56 lines
1.7 KiB
Elixir
56 lines
1.7 KiB
Elixir
defmodule BDS.ProgressReporter do
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@moduledoc false
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@typedoc "A 2-arity progress callback `(progress :: float(), message :: String.t()) -> any()`."
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@type callback :: (float(), String.t() -> any()) | nil
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@spec callback(keyword()) :: callback()
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def callback(opts) do
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case Keyword.get(opts, :on_progress) do
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callback when is_function(callback, 2) -> callback
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_other -> nil
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end
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end
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@spec scaled(callback(), float(), float()) :: callback()
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def scaled(nil, _start_value, _end_value), do: nil
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def scaled(report, start_value, end_value) when is_function(report, 2) do
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fn value, message ->
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scaled_value = start_value + (end_value - start_value) * value
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report.(scaled_value, message)
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end
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end
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@spec report_rebuild_started(callback(), non_neg_integer(), String.t()) :: :ok
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def report_rebuild_started(nil, _total, _label), do: :ok
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def report_rebuild_started(callback, 0, label) do
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callback.(1.0, "No #{label} found")
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:ok
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end
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def report_rebuild_started(callback, total, label) do
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callback.(0.05, "Rebuilding #{label} (0/#{total})")
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:ok
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end
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@spec report_rebuild_progress(callback(), non_neg_integer(), non_neg_integer(), String.t()) ::
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:ok
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def report_rebuild_progress(nil, _current, _total, _label), do: :ok
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def report_rebuild_progress(_callback, _current, 0, _label), do: :ok
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def report_rebuild_progress(callback, current, total, label) do
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callback.(0.05 + 0.95 * (current / total), "Rebuilding #{label} (#{current}/#{total})")
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:ok
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end
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@spec report_phase(callback(), float(), String.t()) :: :ok
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def report_phase(nil, _progress, _message), do: :ok
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def report_phase(callback, progress, message) do
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callback.(progress, message)
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:ok
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end
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end
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