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