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improve invites, record usage

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shibao
2023-02-04 16:46:37 -05:00
parent 47dab6490d
commit 2c0a4dd7ca
46 changed files with 988 additions and 725 deletions
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66
lib/cannery/accounts.ex
View File

@ -5,7 +5,7 @@ defmodule Cannery.Accounts do
import Ecto.Query, warn: false
alias Cannery.{Mailer, Repo}
alias Cannery.Accounts.{User, UserToken}
alias Cannery.Accounts.{Invite, Invites, User, UserToken}
alias Ecto.{Changeset, Multi}
alias Oban.Job
@ -25,7 +25,9 @@ defmodule Cannery.Accounts do
"""
@spec get_user_by_email(email :: String.t()) :: User.t() | nil
def get_user_by_email(email) when is_binary(email), do: Repo.get_by(User, email: email)
def get_user_by_email(email) when is_binary(email) do
Repo.get_by(User, email: email)
end
@doc """
Gets a user by email and password.
@ -64,7 +66,9 @@ defmodule Cannery.Accounts do
"""
@spec get_user!(User.t()) :: User.t()
def get_user!(id), do: Repo.get!(User, id)
def get_user!(id) do
Repo.get!(User, id)
end
@doc """
Returns all users grouped by role.
@ -113,19 +117,27 @@ defmodule Cannery.Accounts do
:passed
"""
@spec register_user(attrs :: map()) :: {:ok, User.t()} | {:error, User.changeset()}
def register_user(attrs) do
@spec register_user(attrs :: map(), Invite.token() | nil) ::
{:ok, User.t()} | {:error, :invalid_token | User.changeset()}
def register_user(attrs, invite_token \\ nil) do
Multi.new()
|> Multi.one(:users_count, from(u in User, select: count(u.id), distinct: true))
|> Multi.insert(:add_user, fn %{users_count: count} ->
|> Multi.run(:use_invite, fn _changes_so_far, _repo ->
if allow_registration?() and invite_token |> is_nil() do
{:ok, nil}
else
Invites.use_invite(invite_token)
end
end)
|> Multi.insert(:add_user, fn %{users_count: count, use_invite: invite} ->
# if no registered users, make first user an admin
role = if count == 0, do: :admin, else: :user
User.registration_changeset(attrs) |> User.role_changeset(role)
User.registration_changeset(attrs, invite) |> User.role_changeset(role)
end)
|> Repo.transaction()
|> case do
{:ok, %{add_user: user}} -> {:ok, user}
{:error, :use_invite, :invalid_token, _changes_so_far} -> {:error, :invalid_token}
{:error, :add_user, changeset, _changes_so_far} -> {:error, changeset}
end
end
@ -144,8 +156,9 @@ defmodule Cannery.Accounts do
"""
@spec change_user_registration() :: User.changeset()
@spec change_user_registration(attrs :: map()) :: User.changeset()
def change_user_registration(attrs \\ %{}),
do: User.registration_changeset(attrs, hash_password: false)
def change_user_registration(attrs \\ %{}) do
User.registration_changeset(attrs, nil, hash_password: false)
end
## Settings
@ -160,7 +173,9 @@ defmodule Cannery.Accounts do
"""
@spec change_user_email(User.t()) :: User.changeset()
@spec change_user_email(User.t(), attrs :: map()) :: User.changeset()
def change_user_email(user, attrs \\ %{}), do: User.email_changeset(user, attrs)
def change_user_email(user, attrs \\ %{}) do
User.email_changeset(user, attrs)
end
@doc """
Returns an `%Changeset{}` for changing the user role.
@ -172,7 +187,9 @@ defmodule Cannery.Accounts do
"""
@spec change_user_role(User.t(), User.role()) :: User.changeset()
def change_user_role(user, role), do: User.role_changeset(user, role)
def change_user_role(user, role) do
User.role_changeset(user, role)
end
@doc """
Emulates that the email will change without actually changing
@ -262,8 +279,9 @@ defmodule Cannery.Accounts do
"""
@spec change_user_password(User.t(), attrs :: map()) :: User.changeset()
def change_user_password(user, attrs \\ %{}),
do: User.password_changeset(user, attrs, hash_password: false)
def change_user_password(user, attrs \\ %{}) do
User.password_changeset(user, attrs, hash_password: false)
end
@doc """
Updates the user password.
@ -314,7 +332,9 @@ defmodule Cannery.Accounts do
"""
@spec change_user_locale(User.t()) :: User.changeset()
def change_user_locale(%{locale: locale} = user), do: User.locale_changeset(user, locale)
def change_user_locale(%{locale: locale} = user) do
User.locale_changeset(user, locale)
end
@doc """
Updates the user locale.
@ -328,8 +348,9 @@ defmodule Cannery.Accounts do
"""
@spec update_user_locale(User.t(), locale :: String.t()) ::
{:ok, User.t()} | {:error, User.changeset()}
def update_user_locale(user, locale),
do: user |> User.locale_changeset(locale) |> Repo.update()
def update_user_locale(user, locale) do
user |> User.locale_changeset(locale) |> Repo.update()
end
@doc """
Deletes a user. must be performed by an admin or the same user!
@ -346,8 +367,13 @@ defmodule Cannery.Accounts do
"""
@spec delete_user!(user_to_delete :: User.t(), User.t()) :: User.t()
def delete_user!(user, %User{role: :admin}), do: user |> Repo.delete!()
def delete_user!(%User{id: user_id} = user, %User{id: user_id}), do: user |> Repo.delete!()
def delete_user!(user, %User{role: :admin}) do
user |> Repo.delete!()
end
def delete_user!(%User{id: user_id} = user, %User{id: user_id}) do
user |> Repo.delete!()
end
## Session
@ -375,7 +401,7 @@ defmodule Cannery.Accounts do
"""
@spec delete_session_token(token :: String.t()) :: :ok
def delete_session_token(token) do
Repo.delete_all(UserToken.token_and_context_query(token, "session"))
UserToken.token_and_context_query(token, "session") |> Repo.delete_all()
:ok
end

30
lib/cannery/invites/invite.ex → lib/cannery/accounts/invite.ex
View File

@ -1,4 +1,4 @@
defmodule Cannery.Invites.Invite do
defmodule Cannery.Accounts.Invite do
@moduledoc """
An invite, created by an admin to allow someone to join their instance. An
invite can be enabled or disabled, and can have an optional number of uses if
@ -7,8 +7,8 @@ defmodule Cannery.Invites.Invite do
use Ecto.Schema
import Ecto.Changeset
alias Ecto.{Changeset, UUID}
alias Cannery.{Accounts.User, Invites.Invite}
alias Cannery.Accounts.User
alias Ecto.{Association, Changeset, UUID}
@primary_key {:id, :binary_id, autogenerate: true}
@foreign_key_type :binary_id
@ -18,33 +18,37 @@ defmodule Cannery.Invites.Invite do
field :uses_left, :integer, default: nil
field :disabled_at, :naive_datetime
belongs_to :user, User
belongs_to :created_by, User
has_many :users, User
timestamps()
end
@type t :: %Invite{
@type t :: %__MODULE__{
id: id(),
name: String.t(),
token: String.t(),
token: token(),
uses_left: integer() | nil,
disabled_at: NaiveDateTime.t(),
user: User.t(),
user_id: User.id(),
created_by: User.t() | nil | Association.NotLoaded.t(),
created_by_id: User.id() | nil,
users: [User.t()] | Association.NotLoaded.t(),
inserted_at: NaiveDateTime.t(),
updated_at: NaiveDateTime.t()
}
@type new_invite :: %Invite{}
@type new_invite :: %__MODULE__{}
@type id :: UUID.t()
@type changeset :: Changeset.t(t() | new_invite())
@type token :: String.t()
@doc false
@spec create_changeset(User.t(), token :: binary(), attrs :: map()) :: changeset()
@spec create_changeset(User.t(), token(), attrs :: map()) :: changeset()
def create_changeset(%User{id: user_id}, token, attrs) do
%Invite{}
|> change(token: token, user_id: user_id)
%__MODULE__{}
|> change(token: token, created_by_id: user_id)
|> cast(attrs, [:name, :uses_left, :disabled_at])
|> validate_required([:name, :token, :user_id])
|> validate_required([:name, :token, :created_by_id])
|> validate_number(:uses_left, greater_than_or_equal_to: 0)
end

196
lib/cannery/accounts/invites.ex Normal file
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@ -0,0 +1,196 @@
defmodule Cannery.Accounts.Invites do
@moduledoc """
The Invites context.
"""
import Ecto.Query, warn: false
alias Ecto.Multi
alias Cannery.Accounts.{Invite, User}
alias Cannery.Repo
@invite_token_length 20
@doc """
Returns the list of invites.
## Examples
iex> list_invites(%User{id: 123, role: :admin})
[%Invite{}, ...]
"""
@spec list_invites(User.t()) :: [Invite.t()]
def list_invites(%User{role: :admin}) do
Repo.all(from i in Invite, order_by: i.name)
end
@doc """
Gets a single invite for a user
Raises `Ecto.NoResultsError` if the Invite does not exist.
## Examples
iex> get_invite!(123, %User{id: 123, role: :admin})
%Invite{}
> get_invite!(456, %User{id: 123, role: :admin})
** (Ecto.NoResultsError)
"""
@spec get_invite!(Invite.id(), User.t()) :: Invite.t()
def get_invite!(id, %User{role: :admin}) do
Repo.get!(Invite, id)
end
@doc """
Returns if an invite token is still valid
## Examples
iex> valid_invite_token?("valid_token")
%Invite{}
iex> valid_invite_token?("invalid_token")
nil
"""
@spec valid_invite_token?(Invite.token() | nil) :: boolean()
def valid_invite_token?(token) when token in [nil, ""], do: false
def valid_invite_token?(token) do
Repo.exists?(
from i in Invite,
where: i.token == ^token,
where: i.disabled_at |> is_nil()
)
end
@doc """
Uses invite by decrementing uses_left, or marks invite invalid if it's been
completely used.
"""
@spec use_invite(Invite.token()) :: {:ok, Invite.t()} | {:error, :invalid_token}
def use_invite(invite_token) do
Multi.new()
|> Multi.run(:invite, fn _changes_so_far, _repo ->
invite_token |> get_invite_by_token()
end)
|> Multi.update(:decrement_invite, fn %{invite: invite} ->
decrement_invite_changeset(invite)
end)
|> Repo.transaction()
|> case do
{:ok, %{decrement_invite: invite}} -> {:ok, invite}
{:error, :invite, :invalid_token, _changes_so_far} -> {:error, :invalid_token}
end
end
@spec get_invite_by_token(Invite.token()) :: {:ok, Invite.t()} | {:error, :invalid_token}
defp get_invite_by_token(token) do
Repo.one(
from i in Invite,
where: i.token == ^token,
where: i.disabled_at |> is_nil()
)
|> case do
nil -> {:error, :invalid_token}
invite -> {:ok, invite}
end
end
@spec get_use_count(Invite.t(), User.t()) :: non_neg_integer()
def get_use_count(%Invite{id: invite_id}, %User{role: :admin}) do
Repo.one(
from u in User,
where: u.invite_id == ^invite_id,
select: count(u.id)
)
end
@spec decrement_invite_changeset(Invite.t()) :: Invite.changeset()
defp decrement_invite_changeset(%Invite{uses_left: nil} = invite) do
invite |> Invite.update_changeset(%{})
end
defp decrement_invite_changeset(%Invite{uses_left: 1} = invite) do
now = NaiveDateTime.utc_now() |> NaiveDateTime.truncate(:second)
invite |> Invite.update_changeset(%{uses_left: 0, disabled_at: now})
end
defp decrement_invite_changeset(%Invite{uses_left: uses_left} = invite) do
invite |> Invite.update_changeset(%{uses_left: uses_left - 1})
end
@doc """
Creates a invite.
## Examples
iex> create_invite(%User{id: 123, role: :admin}, %{field: value})
{:ok, %Invite{}}
iex> create_invite(%User{id: 123, role: :admin}, %{field: bad_value})
{:error, %Changeset{}}
"""
@spec create_invite(User.t(), attrs :: map()) ::
{:ok, Invite.t()} | {:error, Invite.changeset()}
def create_invite(%User{role: :admin} = user, attrs) do
token =
:crypto.strong_rand_bytes(@invite_token_length)
|> Base.url_encode64()
|> binary_part(0, @invite_token_length)
Invite.create_changeset(user, token, attrs) |> Repo.insert()
end
@doc """
Updates a invite.
## Examples
iex> update_invite(invite, %{field: new_value}, %User{id: 123, role: :admin})
{:ok, %Invite{}}
iex> update_invite(invite, %{field: bad_value}, %User{id: 123, role: :admin})
{:error, %Changeset{}}
"""
@spec update_invite(Invite.t(), attrs :: map(), User.t()) ::
{:ok, Invite.t()} | {:error, Invite.changeset()}
def update_invite(invite, attrs, %User{role: :admin}) do
invite |> Invite.update_changeset(attrs) |> Repo.update()
end
@doc """
Deletes a invite.
## Examples
iex> delete_invite(invite, %User{id: 123, role: :admin})
{:ok, %Invite{}}
iex> delete_invite(invite, %User{id: 123, role: :admin})
{:error, %Changeset{}}
"""
@spec delete_invite(Invite.t(), User.t()) ::
{:ok, Invite.t()} | {:error, Invite.changeset()}
def delete_invite(invite, %User{role: :admin}) do
invite |> Repo.delete()
end
@doc """
Deletes a invite.
## Examples
iex> delete_invite(invite, %User{id: 123, role: :admin})
%Invite{}
"""
@spec delete_invite!(Invite.t(), User.t()) :: Invite.t()
def delete_invite!(invite, %User{role: :admin}) do
invite |> Repo.delete!()
end
end

25
lib/cannery/accounts/user.ex
View File

@ -1,13 +1,13 @@
defmodule Cannery.Accounts.User do
@moduledoc """
A cannery user
A Cannery user
"""
use Ecto.Schema
import Ecto.Changeset
import CanneryWeb.Gettext
alias Ecto.{Changeset, UUID}
alias Cannery.{Accounts.User, Invites.Invite}
alias Ecto.{Association, Changeset, UUID}
alias Cannery.Accounts.{Invite, User}
@derive {Jason.Encoder,
only: [
@ -15,7 +15,9 @@ defmodule Cannery.Accounts.User do
:email,
:confirmed_at,
:role,
:locale
:locale,
:inserted_at,
:updated_at
]}
@derive {Inspect, except: [:password]}
@primary_key {:id, :binary_id, autogenerate: true}
@ -28,7 +30,9 @@ defmodule Cannery.Accounts.User do
field :role, Ecto.Enum, values: [:admin, :user], default: :user
field :locale, :string
has_many :invites, Invite, on_delete: :delete_all
has_many :created_invites, Invite, foreign_key: :created_by_id
belongs_to :invite, Invite
timestamps()
end
@ -41,7 +45,9 @@ defmodule Cannery.Accounts.User do
confirmed_at: NaiveDateTime.t(),
role: role(),
locale: String.t() | nil,
invites: [Invite.t()],
created_invites: [Invite.t()] | Association.NotLoaded.t(),
invite: Invite.t() | nil | Association.NotLoaded.t(),
invite_id: Invite.id() | nil,
inserted_at: NaiveDateTime.t(),
updated_at: NaiveDateTime.t()
}
@ -67,11 +73,12 @@ defmodule Cannery.Accounts.User do
validations on a LiveView form), this option can be set to `false`.
Defaults to `true`.
"""
@spec registration_changeset(attrs :: map()) :: changeset()
@spec registration_changeset(attrs :: map(), opts :: keyword()) :: changeset()
def registration_changeset(attrs, opts \\ []) do
@spec registration_changeset(attrs :: map(), Invite.t() | nil) :: changeset()
@spec registration_changeset(attrs :: map(), Invite.t() | nil, opts :: keyword()) :: changeset()
def registration_changeset(attrs, invite, opts \\ []) do
%User{}
|> cast(attrs, [:email, :password, :locale])
|> put_change(:invite_id, if(invite, do: invite.id))
|> validate_email()
|> validate_password(opts)
end

46
lib/cannery/accounts/user_token.ex
View File

@ -1,12 +1,12 @@
defmodule Cannery.Accounts.UserToken do
@moduledoc """
Schema for serialized user session and authentication tokens
Schema for a user's session token
"""
use Ecto.Schema
import Ecto.Query
alias Ecto.{Query, UUID}
alias Cannery.{Accounts.User, Accounts.UserToken}
alias Cannery.Accounts.User
alias Ecto.{Association, UUID}
@hash_algorithm :sha256
@rand_size 32
@ -30,27 +30,27 @@ defmodule Cannery.Accounts.UserToken do
timestamps(updated_at: false)
end
@type t :: %UserToken{
@type t :: %__MODULE__{
id: id(),
token: String.t(),
token: token(),
context: String.t(),
sent_to: String.t(),
user: User.t(),
user_id: User.id(),
user: User.t() | Association.NotLoaded.t(),
user_id: User.id() | nil,
inserted_at: NaiveDateTime.t()
}
@type new_token :: %UserToken{}
@type new_user_token :: %__MODULE__{}
@type id :: UUID.t()
@type token :: binary()
@doc """
Generates a token that will be stored in a signed place,
such as session or cookie. As they are signed, those
tokens do not need to be hashed.
"""
@spec build_session_token(User.t()) :: {token :: String.t(), new_token()}
def build_session_token(%{id: user_id}) do
def build_session_token(user) do
token = :crypto.strong_rand_bytes(@rand_size)
{token, %UserToken{token: token, context: "session", user_id: user_id}}
{token, %__MODULE__{token: token, context: "session", user_id: user.id}}
end
@doc """
@ -58,7 +58,6 @@ defmodule Cannery.Accounts.UserToken do
The query returns the user found by the token.
"""
@spec verify_session_token_query(token :: String.t()) :: {:ok, Query.t()}
def verify_session_token_query(token) do
query =
from token in token_and_context_query(token, "session"),
@ -77,19 +76,16 @@ defmodule Cannery.Accounts.UserToken do
The token is valid for a week as long as users don't change
their email.
"""
@spec build_email_token(User.t(), context :: String.t()) :: {token :: String.t(), new_token()}
def build_email_token(user, context) do
build_hashed_token(user, context, user.email)
end
@spec build_hashed_token(User.t(), String.t(), String.t()) ::
{String.t(), new_token()}
defp build_hashed_token(user, context, sent_to) do
token = :crypto.strong_rand_bytes(@rand_size)
hashed_token = :crypto.hash(@hash_algorithm, token)
{Base.url_encode64(token, padding: false),
%UserToken{
%__MODULE__{
token: hashed_token,
context: context,
sent_to: sent_to,
@ -102,8 +98,6 @@ defmodule Cannery.Accounts.UserToken do
The query returns the user found by the token.
"""
@spec verify_email_token_query(token :: String.t(), context :: String.t()) ::
{:ok, Query.t()} | :error
def verify_email_token_query(token, context) do
case Base.url_decode64(token, padding: false) do
{:ok, decoded_token} ->
@ -123,7 +117,6 @@ defmodule Cannery.Accounts.UserToken do
end
end
@spec days_for_context(context :: <<_::56>>) :: non_neg_integer()
defp days_for_context("confirm"), do: @confirm_validity_in_days
defp days_for_context("reset_password"), do: @reset_password_validity_in_days
@ -132,8 +125,6 @@ defmodule Cannery.Accounts.UserToken do
The query returns the user token record.
"""
@spec verify_change_email_token_query(token :: String.t(), context :: String.t()) ::
{:ok, Query.t()} | :error
def verify_change_email_token_query(token, context) do
case Base.url_decode64(token, padding: false) do
{:ok, decoded_token} ->
@ -153,21 +144,18 @@ defmodule Cannery.Accounts.UserToken do
@doc """
Returns the given token with the given context.
"""
@spec token_and_context_query(token :: String.t(), context :: String.t()) :: Query.t()
def token_and_context_query(token, context) do
from UserToken, where: [token: ^token, context: ^context]
from __MODULE__, where: [token: ^token, context: ^context]
end
@doc """
Gets all tokens for the given user for the given contexts.
"""
@spec user_and_contexts_query(User.t(), contexts :: :all | nonempty_maybe_improper_list()) ::
Query.t()
def user_and_contexts_query(%{id: user_id}, :all) do
from t in UserToken, where: t.user_id == ^user_id
def user_and_contexts_query(user, :all) do
from t in __MODULE__, where: t.user_id == ^user.id
end
def user_and_contexts_query(%{id: user_id}, [_ | _] = contexts) do
from t in UserToken, where: t.user_id == ^user_id and t.context in ^contexts
def user_and_contexts_query(user, [_ | _] = contexts) do
from t in __MODULE__, where: t.user_id == ^user.id and t.context in ^contexts
end
end

155
lib/cannery/invites.ex
View File

@ -1,155 +0,0 @@
defmodule Cannery.Invites do
@moduledoc """
The Invites context.
"""
import Ecto.Query, warn: false
alias Cannery.{Accounts.User, Invites.Invite, Repo}
@invite_token_length 20
@doc """
Returns the list of invites.
## Examples
iex> list_invites(%User{id: 123, role: :admin})
[%Invite{}, ...]
"""
@spec list_invites(User.t()) :: [Invite.t()]
def list_invites(%User{role: :admin}) do
Repo.all(from i in Invite, order_by: i.name)
end
@doc """
Gets a single invite.
Raises `Ecto.NoResultsError` if the Invite does not exist.
## Examples
iex> get_invite!(123, %User{id: 123, role: :admin})
%Invite{}
iex> get_invite!(456, %User{id: 123, role: :admin})
** (Ecto.NoResultsError)
"""
@spec get_invite!(Invite.id(), User.t()) :: Invite.t()
def get_invite!(id, %User{role: :admin}) do
Repo.get!(Invite, id)
end
@doc """
Returns a valid invite or nil based on the attempted token
## Examples
iex> get_invite_by_token("valid_token")
%Invite{}
iex> get_invite_by_token("invalid_token")
nil
"""
@spec get_invite_by_token(token :: String.t() | nil) :: Invite.t() | nil
def get_invite_by_token(nil), do: nil
def get_invite_by_token(""), do: nil
def get_invite_by_token(token) do
Repo.one(
from(i in Invite,
where: i.token == ^token and i.disabled_at |> is_nil()
)
)
end
@doc """
Uses invite by decrementing uses_left, or marks invite invalid if it's been
completely used.
"""
@spec use_invite!(Invite.t()) :: Invite.t()
def use_invite!(%Invite{uses_left: nil} = invite), do: invite
def use_invite!(%Invite{uses_left: uses_left} = invite) do
new_uses_left = uses_left - 1
attrs =
if new_uses_left <= 0 do
now = NaiveDateTime.utc_now() |> NaiveDateTime.truncate(:second)
%{"uses_left" => 0, "disabled_at" => now}
else
%{"uses_left" => new_uses_left}
end
invite |> Invite.update_changeset(attrs) |> Repo.update!()
end
@doc """
Creates a invite.
## Examples
iex> create_invite(%User{id: 123, role: :admin}, %{field: value})
{:ok, %Invite{}}
iex> create_invite(%User{id: 123, role: :admin}, %{field: bad_value})
{:error, %Changeset{}}
"""
@spec create_invite(User.t(), attrs :: map()) ::
{:ok, Invite.t()} | {:error, Invite.changeset()}
def create_invite(%User{role: :admin} = user, attrs) do
token =
:crypto.strong_rand_bytes(@invite_token_length)
|> Base.url_encode64()
|> binary_part(0, @invite_token_length)
Invite.create_changeset(user, token, attrs) |> Repo.insert()
end
@doc """
Updates a invite.
## Examples
iex> update_invite(invite, %{field: new_value}, %User{id: 123, role: :admin})
{:ok, %Invite{}}
iex> update_invite(invite, %{field: bad_value}, %User{id: 123, role: :admin})
{:error, %Changeset{}}
"""
@spec update_invite(Invite.t(), attrs :: map(), User.t()) ::
{:ok, Invite.t()} | {:error, Invite.changeset()}
def update_invite(invite, attrs, %User{role: :admin}),
do: invite |> Invite.update_changeset(attrs) |> Repo.update()
@doc """
Deletes a invite.
## Examples
iex> delete_invite(invite, %User{id: 123, role: :admin})
{:ok, %Invite{}}
iex> delete_invite(invite, %User{id: 123, role: :admin})
{:error, %Changeset{}}
"""
@spec delete_invite(Invite.t(), User.t()) ::
{:ok, Invite.t()} | {:error, Invite.changeset()}
def delete_invite(invite, %User{role: :admin}), do: invite |> Repo.delete()
@doc """
Deletes a invite.
## Examples
iex> delete_invite(invite, %User{id: 123, role: :admin})
%Invite{}
"""
@spec delete_invite!(Invite.t(), User.t()) :: Invite.t()
def delete_invite!(invite, %User{role: :admin}), do: invite |> Repo.delete!()
end