47 lines
1.2 KiB
Elixir
47 lines
1.2 KiB
Elixir
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defmodule ShootingEventPhx.Auth.SessionStore do
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@moduledoc false
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use Agent
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@duration_seconds 8 * 60 * 60
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def start_link(_opts) do
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Agent.start_link(fn -> %{} end, name: __MODULE__)
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end
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def create_token do
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token = :crypto.strong_rand_bytes(32) |> Base.encode16(case: :lower)
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expires_at = DateTime.add(DateTime.utc_now(), @duration_seconds, :second)
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Agent.update(__MODULE__, &Map.put(&1, token, expires_at))
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{:ok, token, expires_at}
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end
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def validate_token(token) when is_binary(token) do
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purge_expired()
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Agent.get(__MODULE__, fn tokens ->
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case Map.get(tokens, token) do
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%DateTime{} = expires_at -> DateTime.compare(DateTime.utc_now(), expires_at) == :lt
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_ -> false
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end
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end)
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end
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def delete_token(token) when is_binary(token) do
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Agent.update(__MODULE__, &Map.delete(&1, token))
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end
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def purge_expired do
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now = DateTime.utc_now()
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Agent.update(__MODULE__, fn tokens ->
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Enum.reduce(tokens, %{}, fn {token, expires_at}, acc ->
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if DateTime.compare(now, expires_at) == :lt do
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Map.put(acc, token, expires_at)
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else
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acc
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end
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end)
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end)
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end
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end
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