thread update/insert changeset fixed - auth permissions done

config/config.exs

@@ -27,3 +27,11 @@ config :logger, :console,
 # of this file so it overrides the configuration defined above.
 import_config "#{Mix.env}.exs"
 import_config "config.secret.exs"
+
+# user permissions for app - right now the read/write don't mean anything
+config :myapp, MyApp.Guardian,
+  permissions: %{
+    user: [:read, :write],
+    mod: [:read, :write],
+    admin: [:read, :write],
+  }

lib/myapp/auth/auth.ex

@@ -1,5 +1,6 @@
 defmodule MyApp.Guardian do
   use Guardian, otp_app: :myapp
+  use Guardian.Permissions.Bitwise
 
   def subject_for_token(resource, _claims) do
     # You can use any value for the subject of your token but
@@ -11,10 +12,6 @@ defmodule MyApp.Guardian do
     {:ok, sub}
   end
 
-  # def subject_for_token(_, _) do
-  #   {:error, :reason_for_error}
-  # end
-
   def resource_from_claims(claims) do
     # Here we'll look up our resource from the claims, the subject can be
     # found in the `"sub"` key. In `above subject_for_token/2` we returned
@@ -25,8 +22,10 @@ defmodule MyApp.Guardian do
     {:ok,  resource}
   end
 
-  # def resource_from_claims(_claims) do
-  #   {:error, :reason_for_error}
-  # end
+  @spec add_permissions(map, map) :: map
+  def add_permissions(claims, permissions) do
+    claims
+    |> encode_permissions_into_claims!(permissions)
+  end 
 
 end

lib/myapp/auth/pipeline.ex

@@ -1,9 +1,39 @@
-defmodule MyApp.Guardian.AuthPipeline.JSON do
+defmodule MyApp.Guardian.Auth.Pipeline.User do
   use Guardian.Plug.Pipeline, otp_app: :MyApp,
                               module: MyApp.Guardian,
                               error_handler: MyApp.Auth.ErrorHandler
 
   plug Guardian.Plug.VerifyHeader, realm: "Bearer"
+  plug Guardian.Permissions.Bitwise, one_of: [
+    %{user: [:read, :write]},
+    %{mod: [:read, :write]},
+    %{admin: [:read, :write]},
+  ]
+  plug Guardian.Plug.EnsureAuthenticated
+  plug Guardian.Plug.LoadResource, allow_blank: true
+end
+
+defmodule MyApp.Guardian.Auth.Pipeline.Mod do
+  use Guardian.Plug.Pipeline, otp_app: :MyApp,
+                              module: MyApp.Guardian,
+                              error_handler: MyApp.Auth.ErrorHandler
+
+  plug Guardian.Plug.VerifyHeader, realm: "Bearer"
+  plug Guardian.Permissions.Bitwise, one_of: [
+    %{mod: [:read, :write]},
+    %{admin: [:read, :write]},
+  ]
+  plug Guardian.Plug.EnsureAuthenticated
+  plug Guardian.Plug.LoadResource, allow_blank: true
+end
+
+defmodule MyApp.Guardian.Auth.Pipeline.Admin do
+  use Guardian.Plug.Pipeline, otp_app: :MyApp,
+                              module: MyApp.Guardian,
+                              error_handler: MyApp.Auth.ErrorHandler
+
+  plug Guardian.Plug.VerifyHeader, realm: "Bearer"
+  plug Guardian.Permissions.Bitwise, one_of: [%{admin: [:read, :write]}]
   plug Guardian.Plug.EnsureAuthenticated
   plug Guardian.Plug.LoadResource, allow_blank: true
 end

lib/myapp/auth/token.ex

@@ -0,0 +1,33 @@
+defmodule MyApp.Guardian.Auth.Token do
+  alias MyApp.Guardian
+  
+  # ~1 year
+  defp tokenTTL(), do: {52, :weeks}
+
+  @spec add_token_and_map_claims(map | {atom, any}) :: {:ok, map} | {:error, String.t}
+  def add_token_and_map_claims(user) when is_map(user) do
+
+    claims = user
+    |> Map.take([:id, :battletag, :battle_net_id, :access_token]) # take values from user object to map to claims
+    |> Guardian.add_permissions(get_permissions(user))
+
+    case Guardian.encode_and_sign(user, claims, ttl: tokenTTL()) do
+      {:ok, token, _claims} -> {:ok, Map.merge(user, %{token: token})}
+      {:error, error} -> {:error, error}
+    end
+  end
+
+  def add_token_and_map_claims({:ok, user}), do: add_token_and_map_claims(user)
+  def add_token_and_map_claims({:error, error}), do: {:error, error}
+
+  # return permissions base on field in database
+  defp get_permissions(user) do
+    case Map.get(user, :permissions) do
+      "user" -> %{user: [:read, :write]}
+      "mod" -> %{mod: [:read, :write]}
+      "admin" -> %{admin: [:read, :write]}
+      nil -> %{user: [:read, :write]}
+    end
+  end
+
+end

lib/myapp/data/thread.ex

@@ -1,6 +1,5 @@
 defmodule MyApp.Data.Thread do
   use Ecto.Schema
-  import Ecto.Query
   import Ecto.Changeset
   alias MyApp.Repo
   alias MyApp.Data
@@ -16,33 +15,48 @@ defmodule MyApp.Data.Thread do
     field :sticky, :boolean, default: false
     field :locked, :boolean, default: false
     field :edited, :boolean, default: false
-
     timestamps()
   end
 
-  def changeset(thread, params \\ %{}) do
+  def insert_changeset(thread, params \\ %{}) do
     thread
-    |> cast(params, [:id, :title, :category_id, :content, :user_id, :view_count, :last_reply_id, :sticky, :locked, :edited])
+    |> cast(params, [:title, :category_id, :content, :user_id])
     |> validate_required([:title, :category_id, :content, :user_id])
     |> foreign_key_constraint(:category_id)
+    |> foreign_key_constraint(:user_id)
+  end
+
+  def update_changeset(thread, params \\ %{}) do
+    thread
+    |> cast(params, [:content, :user_id, :sticky, :locked])
+    |> force_change(:edited, true) # set edited flag on update
+    |> validate_required([:content, :user_id])
+    |> foreign_key_constraint(:category_id)
+    |> foreign_key_constraint(:user_id)
   end
 
   def insert_thread(params) do
-    changeset(%Data.Thread{}, params)
+    insert_changeset(%Data.Thread{}, params)
     |> Repo.insert
     |> Data.Util.process_insert_or_update
   end
 
   def update_thread(params) do
-    Repo.get(Data.Thread, Map.get(params, "id"))
-    |> process_update(params)
+    id = Map.get(params, "id")
+    if id == nil do
+      {:error, "Invalid thread"}
+    else
+      Repo.get(Data.Thread, id)
+      |> process_update(params)
+    end
   end
 
+  # TODO: delete thread
+
   # TODO: check user permissions for sticky/locked
   defp process_update(thread, _params) when is_nil(thread), do: {:error, "Invalid thread"}
   defp process_update(thread, params) when not is_nil(thread) do
-    changeset(thread, Map.take(params, ["content", "edited", "sticky", "locked"]))
-    |> IO.inspect
+    update_changeset(thread, params)
     |> Repo.update
     |> Data.Util.process_insert_or_update
   end

lib/myapp/jwt.ex

@@ -1,18 +0,0 @@
-defmodule MyApp.JWT do
-  alias MyApp.Guardian
-  
-  # ~1 year
-  defp tokenTTL(), do: {52, :weeks}
-
-  @spec add_jwt(map | {atom, any}) :: {:ok, map} | {:error, String.t}
-  def add_jwt(user) when is_map(user) do
-    case Guardian.encode_and_sign(user, user, ttl: tokenTTL()) do
-      {:ok, token, _claims} -> {:ok, Map.merge(user, %{token: token})}
-      {:error, error} -> {:error, error}
-    end
-  end
-
-  def add_jwt({:ok, user}), do: add_jwt(user)
-  def add_jwt({:error, error}), do: {:error, error}
-
-end

lib/myapp_web/controllers/battle_net_controller.ex

@@ -3,7 +3,7 @@ defmodule MyAppWeb.BattleNetController do
   alias MyAppWeb.Response
   alias MyApp.BattleNet
   alias MyApp.Data
-  alias MyApp.JWT
+  alias MyApp.Guardian.Auth
 
   # https://us.battle.net/oauth/authorize?redirect_uri=https://localhost/api/battlenet/authorize&scope=wow.profile&client_id=vxqv32fddxsy6cmk6259amtymbuzmfrq&response_type=code
 
@@ -14,7 +14,7 @@ defmodule MyAppWeb.BattleNetController do
       |> BattleNet.Auth.get_access_token
       |> BattleNet.User.get_user
       |> Data.User.upsert_user
-      |> JWT.add_jwt
+      |> Auth.Token.add_token_and_map_claims
       |> Response.put_resp
 
     conn

lib/myapp_web/controllers/user_controller.ex

@@ -3,9 +3,7 @@ defmodule MyAppWeb.UserController do
   alias MyAppWeb.Response
 
   @spec index(map, map) :: any
-  def index(conn, params) do
-    IO.inspect(conn)
-    IO.inspect(params)
+  def index(conn, _params) do
     conn
     |> Response.json("Auth works!")
   end

lib/myapp_web/router.ex

@@ -1,13 +1,21 @@
 defmodule MyAppWeb.Router do
   use MyAppWeb, :router
-  alias MyApp.Guardian.AuthPipeline
+  alias MyApp.Guardian.Auth
 
   pipeline :api do
     plug :accepts, ["json"]
   end
   
-  pipeline :api_auth do
-    plug AuthPipeline.JSON
+  pipeline :user_auth do
+    plug Auth.Pipeline.User
+  end
+
+  pipeline :mod_auth do
+    plug Auth.Pipeline.Mod
+  end
+
+  pipeline :admin_auth do
+    plug Auth.Pipeline.Admin
   end
 
   # Other scopes may use custom stacks.
@@ -17,26 +25,26 @@ defmodule MyAppWeb.Router do
     scope "/battlenet" do
       get "/authorize", BattleNetController, :authorize
 
-      pipe_through [:api_auth]
+      pipe_through [:user_auth]
       get "/characters", BattleNetController, :characters
     end
 
     scope "/user" do
       # authenticated routes
-      pipe_through [:api_auth]
+      pipe_through [:user_auth]
       get "/", UserController, :index
     end
 
     scope "/thread" do
       # authenticated routes
-      pipe_through [:api_auth]
+      pipe_through [:user_auth]
       post "/", ThreadController, :insert
       put "/", ThreadController, :update
     end
 
-    scope "reply" do
+    scope "/reply" do
       # authenticated routes
-      pipe_through [:api_auth]
+      pipe_through [:user_auth]
       post "/", ReplyController, :insert
     end