40 lines
		
	
	
	
		
			1.3 KiB
		
	
	
	
		
			Elixir
		
	
	
	
	
	
			
		
		
	
	
			40 lines
		
	
	
	
		
			1.3 KiB
		
	
	
	
		
			Elixir
		
	
	
	
	
	
defmodule Pleroma.Uploaders.Uploader do
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  @moduledoc """
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  Defines the contract to put and get an uploaded file to any backend.
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  """
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  @doc """
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  Instructs how to get the file from the backend.
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  Used by `Pleroma.Plugs.UploadedMedia`.
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  """
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  @type get_method :: {:static_dir, directory :: String.t()} | {:url, url :: String.t()}
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  @callback get_file(file :: String.t()) :: {:ok, get_method()}
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  @doc """
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  Put a file to the backend.
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  Returns:
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  * `:ok` which assumes `{:ok, upload.path}`
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  * `{:ok, spec}` where spec is:
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    * `{:file, filename :: String.t}` to handle reads with `get_file/1` (recommended)
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    This allows to correctly proxy or redirect requests to the backend, while allowing to migrate backends without breaking any URL.
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  * `{url, url :: String.t}` to bypass `get_file/2` and use the `url` directly in the activity.
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  * `{:error, String.t}` error information if the file failed to be saved to the backend.
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  """
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  @callback put_file(Pleroma.Upload.t()) ::
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              :ok | {:ok, {:file | :url, String.t()}} | {:error, String.t()}
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  @spec put_file(module(), Pleroma.Upload.t()) ::
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          {:ok, {:file | :url, String.t()}} | {:error, String.t()}
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  def put_file(uploader, upload) do
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    case uploader.put_file(upload) do
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      :ok -> {:ok, {:file, upload.path}}
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      other -> other
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    end
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  end
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end
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