167 lines
3.7 KiB
Elixir
167 lines
3.7 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, Repo}
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alias Cannery.Invites.Invite
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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()
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[%Invite{}, ...]
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"""
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@spec list_invites() :: [Invite.t()]
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def list_invites, do: Repo.all(Invite)
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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)
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%Invite{}
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iex> get_invite!(456)
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** (Ecto.NoResultsError)
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"""
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@spec get_invite!(Ecto.UUID.t()) :: Invite.t()
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def get_invite!(id), do: Repo.get!(Invite, id)
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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(String.t()) :: 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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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.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(%Accounts.User{id: "1"}, %{field: value})
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{:ok, %Invite{}}
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iex> create_invite("1", %{field: value})
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{:ok, %Invite{}}
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iex> create_invite(%Accounts.User{id: "1"}, %{field: bad_value})
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{:error, %Ecto.Changeset{}}
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"""
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@spec create_invite(Accounts.User.t() | Ecto.UUID.t(), map()) :: Invite.t()
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def create_invite(%{id: user_id}, attrs) do
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create_invite(user_id, attrs)
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end
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def create_invite(user_id, attrs) when not (user_id |> is_nil()) do
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attrs =
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attrs
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|> Map.merge(%{
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"user_id" => user_id,
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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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})
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%Invite{} |> Invite.changeset(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})
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{:ok, %Invite{}}
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iex> update_invite(invite, %{field: bad_value})
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{:error, %Ecto.Changeset{}}
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"""
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@spec update_invite(Invite.t(), map()) :: {:ok, Invite.t()} | {:error, Ecto.Changeset.t()}
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def update_invite(invite, attrs) do
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invite |> Invite.changeset(attrs) |> Repo.update()
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end
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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)
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{:ok, %Invite{}}
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iex> delete_invite(invite)
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{:error, %Ecto.Changeset{}}
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"""
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@spec delete_invite(Invite.t()) :: {:ok, Invite.t()} | {:error, Ecto.Changeset.t()}
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def delete_invite(invite) do
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Repo.delete(invite)
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end
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@doc """
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Returns an `%Ecto.Changeset{}` for tracking invite changes.
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## Examples
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iex> change_invite(invite)
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%Ecto.Changeset{data: %Invite{}}
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"""
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@spec change_invite(Invite.t()) :: Ecto.Changeset.t()
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@spec change_invite(Invite.t(), map()) :: Ecto.Changeset.t()
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def change_invite(invite, attrs \\ %{}) do
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Invite.changeset(invite, attrs)
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end
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end
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