Last active
November 29, 2019 12:23
-
-
Save morgz/a754c75f501d27dfce64d427333ece0d to your computer and use it in GitHub Desktop.
PowAssent.Phoenix.ViewHelpers - Enabling adding params to link generation and restructuring the link methods so view can just access paths for greater flexibility.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
defmodule PowAssent.Phoenix.ViewHelpers do | |
@moduledoc """ | |
View helpers to render authorization links. | |
""" | |
alias PowAssent.Plug | |
alias PowAssent.Phoenix.AuthorizationController | |
alias Phoenix.{HTML, HTML.Link} | |
import Logger | |
@doc """ | |
Generates list of authorization links for all configured providers. | |
The list of providers will be fetched from the configuration, and | |
`authorization_link/2` will be called on each. | |
If a user is assigned to the conn, the authorized providers for a user will | |
be looked up with `PowAssent.Plug.providers_for_current_user/1`. | |
`deauthorization_link/2` will be used for any already authorized providers. | |
""" | |
@spec provider_links(Conn.t()) :: [HTML.safe()] | |
def provider_links(conn, link_params \\ []) do | |
available_providers = Plug.available_providers(conn) | |
providers_for_user = Plug.providers_for_current_user(conn) | |
available_providers | |
|> Enum.map(&{&1, &1 in providers_for_user}) | |
|> Enum.map(fn | |
{provider, true} -> deauthorization_link(conn, provider, link_params) | |
{provider, false} -> authorization_link(conn, provider, link_params) | |
end) | |
end | |
@doc """ | |
Generates list of tuples with provider, authorization path and a message for all configured providers. | |
[{provider, message, path}, ...] | |
The list of providers will be fetched from the configuration, and | |
`authorization_path/2` will be called on each. | |
If a user is assigned to the conn, the authorized providers for a user will | |
be looked up with `PowAssent.Plug.providers_for_current_user/1`. | |
`deauthorization_path/2` will be used for any already authorized providers. | |
""" | |
def provider_paths(conn) do | |
available_providers = Plug.available_providers(conn) | |
providers_for_user = Plug.providers_for_current_user(conn) | |
available_providers | |
|> Enum.map(&{&1, &1 in providers_for_user}) | |
|> Enum.map(fn | |
{provider, true} -> {provider, deauthorization_message(conn, provider), deauthorization_path(conn, provider)} | |
{provider, false} -> {provider, authorization_message(conn, provider), authorization_path(conn, provider)} | |
end) | |
end | |
def authorization_path(conn, provider) do | |
query_params = invitation_token_query_params(conn) ++ request_path_query_params(conn) | |
AuthorizationController.routes(conn).path_for(conn, AuthorizationController, :new, [provider], query_params) | |
end | |
def authorization_message(conn, provider) do | |
query_params = invitation_token_query_params(conn) ++ request_path_query_params(conn) | |
AuthorizationController.extension_messages(conn).login_with_provider(%{conn | params: %{"provider" => provider}}) | |
end | |
@doc """ | |
Generates an authorization link for a provider. | |
The link is used to sign up or register a user using a provider. If | |
`:invited_user` is assigned to the conn, the invitation token will be passed | |
on through the URL query params. | |
""" | |
@spec authorization_link(Conn.t(), atom()) :: HTML.safe() | |
def authorization_link(conn, provider, link_params \\ []) do | |
query_params = invitation_token_query_params(conn) ++ request_path_query_params(conn) | |
msg = authorization_message(conn, provider) | |
path = authorization_path(conn, provider) | |
Link.link(msg, [to: path] |> Keyword.merge(link_params)) | |
end | |
defp invitation_token_query_params(%{assigns: %{invited_user: %{invitation_token: token}}}), do: [invitation_token: token] | |
defp invitation_token_query_params(_conn), do: [] | |
defp request_path_query_params(%{assigns: %{request_path: request_path}}), do: [request_path: request_path] | |
defp request_path_query_params(_conn), do: [] | |
def deauthorization_path(conn, provider) do | |
query_params = invitation_token_query_params(conn) ++ request_path_query_params(conn) | |
AuthorizationController.routes(conn).path_for(conn, AuthorizationController, :new, [provider], query_params) | |
end | |
def deauthorization_message(conn, provider) do | |
AuthorizationController.extension_messages(conn).remove_provider_authentication(%{conn | params: %{"provider" => provider}}) | |
end | |
def deauthorization_path(conn, provider) do | |
AuthorizationController.routes(conn).path_for(conn, AuthorizationController, :delete, [provider]) | |
end | |
@doc """ | |
Generates a provider deauthorization link. | |
The link is used to remove authorization with the provider. | |
""" | |
@spec deauthorization_link(Conn.t(), atom()) :: HTML.safe() | |
def deauthorization_link(conn, provider, link_params \\ []) do | |
msg = deauthorization_message(conn, provider) | |
path = deauthorization_path(conn, provider) | |
Link.link(msg, [to: path, method: :delete] |> Keyword.merge(link_params)) | |
end | |
end |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment