81 lines
2.1 KiB
Elixir
81 lines
2.1 KiB
Elixir
defmodule Mobilizon.Service.Pictures.Unsplash do
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@moduledoc """
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[Unsplash](https://unsplash.com) backend.
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"""
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alias Mobilizon.Service.HTTP.GenericJSONClient
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alias Mobilizon.Service.Pictures.{Information, Provider}
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require Logger
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@unsplash_api "/search/photos"
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@unsplash_name "Unsplash"
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@behaviour Provider
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@impl Provider
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@doc """
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Unsplash implementation for `c:Mobilizon.Service.Geospatial.Provider.geocode/3`.
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"""
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@spec search(String.t(), keyword()) :: Information.t()
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def search(location, _options \\ []) do
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url = "#{unsplash_endpoint()}#{@unsplash_api}?query=#{location}&orientation=landscape"
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client =
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GenericJSONClient.client(headers: [{:Authorization, "Client-ID #{unsplash_access_key()}"}])
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with {:ok, %{status: 200, body: body}} <- GenericJSONClient.get(client, url),
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results <- body["results"],
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{:empty, false} <- {:empty, Enum.empty?(results)},
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selected_picture <- Enum.random(results) do
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%Information{
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url: selected_picture["urls"]["small"],
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author: %{
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name: selected_picture["user"]["name"],
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url: "#{selected_picture["user"]["links"]["html"]}#{unsplash_utm_source()}"
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},
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source: %{
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name: @unsplash_name,
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url: unsplash_url()
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}
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}
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else
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{:empty, false} ->
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nil
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_ ->
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nil
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end
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end
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@impl Provider
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@doc """
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Returns the CSP configuration for this search provider to work
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"""
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def csp do
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:mobilizon
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|> Application.get_env(__MODULE__, [])
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|> Keyword.get(:csp_policy, [])
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end
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defp unsplash_app_name do
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Application.get_env(:mobilizon, __MODULE__) |> get_in([:app_name])
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end
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defp unsplash_utm_source do
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"?utm_source=#{unsplash_app_name()}&utm_medium=referral"
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end
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defp unsplash_url do
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"https://unsplash.com/#{unsplash_utm_source()}"
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end
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defp unsplash_endpoint do
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Application.get_env(:mobilizon, __MODULE__) |> get_in([:endpoint]) ||
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"https://api.unsplash.com"
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end
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defp unsplash_access_key do
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Application.get_env(:mobilizon, __MODULE__) |> get_in([:access_key])
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end
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end
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