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# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.HTTP.RequestBuilder do
@moduledoc """
Helper functions for building Tesla requests
"""
@doc """
Specify the request method when building a request
## Parameters
- request (Map) - Collected request options
- m (atom) - Request method
## Returns
Map
"""
@spec method(map(), atom) :: map()
def method(request, m) do
Map.put_new(request, :method, m)
end
@doc """
Specify the request method when building a request
## Parameters
- request (Map) - Collected request options
- u (String) - Request URL
## Returns
Map
"""
@spec url(map(), String.t()) :: map()
def url(request, u) do
Map.put_new(request, :url, u)
end
@doc """
Add headers to the request
"""
@spec headers(map(), list(tuple)) :: map()
def headers(request, header_list) do
header_list =
if Pleroma.Config.get([:http, :send_user_agent]) do
header_list ++ [{"User-Agent", Pleroma.Application.user_agent()}]
else
header_list
end
Map.put_new(request, :headers, header_list)
end
@doc """
Add custom, per-request middleware or adapter options to the request
"""
@spec opts(map(), Keyword.t()) :: map()
def opts(request, options) do
Map.put_new(request, :opts, options)
end
@doc """
Add optional parameters to the request
## Parameters
- request (Map) - Collected request options
- definitions (Map) - Map of parameter name to parameter location.
- options (KeywordList) - The provided optional parameters
## Returns
Map
"""
@spec add_optional_params(map(), %{optional(atom) => atom}, keyword()) :: map()
def add_optional_params(request, _, []), do: request
def add_optional_params(request, definitions, [{key, value} | tail]) do
case definitions do
%{^key => location} ->
request
|> add_param(location, key, value)
|> add_optional_params(definitions, tail)
_ ->
add_optional_params(request, definitions, tail)
end
end
@doc """
Add optional parameters to the request
## Parameters
- request (Map) - Collected request options
- location (atom) - Where to put the parameter
- key (atom) - The name of the parameter
- value (any) - The value of the parameter
## Returns
Map
"""
@spec add_param(map(), atom, atom, any()) :: map()
def add_param(request, :query, :query, values), do: Map.put(request, :query, values)
def add_param(request, :body, :body, value), do: Map.put(request, :body, value)
def add_param(request, :body, key, value) do
request
|> Map.put_new_lazy(:body, &Tesla.Multipart.new/0)
|> Map.update!(
:body,
&Tesla.Multipart.add_field(
&1,
key,
Jason.encode!(value),
headers: [{:"Content-Type", "application/json"}]
)
)
end
def add_param(request, :file, name, path) do
request
|> Map.put_new_lazy(:body, &Tesla.Multipart.new/0)
|> Map.update!(:body, &Tesla.Multipart.add_file(&1, path, name: name))
end
def add_param(request, :form, name, value) do
request
|> Map.update(:body, %{name => value}, &Map.put(&1, name, value))
end
def add_param(request, location, key, value) do
Map.update(request, location, [{key, value}], &(&1 ++ [{key, value}]))
end
end
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