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https://github.com/mgerb/classic-wow-forums
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70 lines
2.4 KiB
Elixir
70 lines
2.4 KiB
Elixir
defmodule MyApp.BattleNet.User do
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def api_url(region), do: "https://#{region}.api.blizzard.com"
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def api_url_non_api(region), do: "https://#{region}.battle.net"
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def cache_key(user_id, region), do: "usr_char:#{user_id}:#{region}"
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# grab user information from battle net api - use token for auth
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@spec get_user(%{"access_token": String.t, "expires_in": integer}, String.t) :: {:ok, map} | {:error, any}
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def get_user(data, region) when is_map(data) do
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data["access_token"]
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|> resource_url_non_api("oauth/userinfo", region)
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|> HTTPoison.get
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|> parse_user_response(data)
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end
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def get_user({:ok, data}, region), do: get_user(data, region)
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def get_user({:error, error}, _), do: {:error, error}
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defp parse_user_response({:error, error}, _), do: {:error, error}
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defp parse_user_response({:ok, %HTTPoison.Response{body: body}}, data) do
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case Poison.decode(body) do
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{:ok, user} ->
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user = user
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|> Map.merge(data) # merge blizzard user api info
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|> Map.put("battle_net_id", Map.get(user, "id")) # change id key to battle_net_id
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|> Map.delete("id") # remove id key
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{:ok, user}
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{:error, error} -> {:error, error}
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end
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end
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# end point is cached for ten minutes per user
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@spec get_user_characters(integer, String.t, String.t) :: {:ok, map} | {:error, any}
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def get_user_characters(user_id, access_token, region) do
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case Cachex.get(:myapp, cache_key(user_id, region)) do
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{:ok, data} ->
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{:ok, data}
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{:missing, _} ->
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access_token
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|> resource_url("wow/user/characters", region)
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|> HTTPoison.get
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|> parse_character_response(user_id, region)
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end
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end
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defp parse_character_response({:error, error}, _, _), do: {:error, error}
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defp parse_character_response({:ok, %HTTPoison.Response{body: body}}, user_id, region) do
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case Poison.decode(body) do
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{:ok, data} ->
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# only cache end point if characters return
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if (!data["characters"]) do
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{:error, data}
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else
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Cachex.set(:myapp, cache_key(user_id, region), data, ttl: :timer.minutes(10)) # 10 minutes
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end
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{:ok, data}
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{:error, error} -> {:error, error}
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end
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end
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defp resource_url(access_token, path, region) do
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"#{api_url(region)}/#{path}?access_token=#{access_token}"
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end
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defp resource_url_non_api(access_token, path, region) do
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"#{api_url_non_api(region)}/#{path}?access_token=#{access_token}"
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end
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end
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