172 lines
3.7 KiB
Elixir
172 lines
3.7 KiB
Elixir
defmodule BeetRoundServer.Biddings do
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@moduledoc """
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The Biddings context.
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"""
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import Ecto.Query, warn: false
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alias BeetRoundServer.Repo
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alias BeetRoundServer.Biddings.Bidding
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alias BeetRoundServer.Accounts.Scope
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@doc """
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Subscribes to scoped notifications about any bidding changes.
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The broadcasted messages match the pattern:
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* {:created, %Bidding{}}
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* {:updated, %Bidding{}}
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* {:deleted, %Bidding{}}
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"""
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def subscribe_biddings(%Scope{} = scope) do
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key = scope.user.id
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Phoenix.PubSub.subscribe(BeetRoundServer.PubSub, "user:#{key}:biddings")
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end
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defp broadcast_bidding(%Scope{} = scope, message) do
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key = scope.user.id
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Phoenix.PubSub.broadcast(BeetRoundServer.PubSub, "user:#{key}:biddings", message)
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end
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@doc """
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Returns the list of biddings.
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## Examples
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iex> list_biddings(scope)
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[%Bidding{}, ...]
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"""
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def list_biddings(%Scope{} = scope) do
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Repo.all_by(Bidding, user_id: scope.user.id)
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end
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def list_biddings() do
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Repo.all(Bidding)
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end
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@doc """
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Gets a single bidding.
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Raises `Ecto.NoResultsError` if the Bidding does not exist.
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## Examples
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iex> get_bidding!(scope, 123)
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%Bidding{}
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iex> get_bidding!(scope, 456)
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** (Ecto.NoResultsError)
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"""
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def get_bidding!(%Scope{} = scope, id) do
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Repo.get_by!(Bidding, id: id, user_id: scope.user.id)
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end
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def biddings_of_round(round_number) do
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Repo.all(
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from(bidding in Bidding,
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where: bidding.bidding_round == ^round_number,
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order_by: [asc: bidding.inserted_at]
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)
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)
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end
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def get_most_recent_bidding(%Scope{} = scope) do
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query =
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Ecto.Query.from(bidding in Bidding,
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where: bidding.user_id == ^scope.user.id,
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order_by: [desc: bidding.inserted_at],
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limit: 1
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)
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Repo.one(query)
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end
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@doc """
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Creates a bidding.
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## Examples
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iex> create_bidding(scope, %{field: value})
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{:ok, %Bidding{}}
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iex> create_bidding(scope, %{field: bad_value})
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{:error, %Ecto.Changeset{}}
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"""
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def create_bidding(%Scope{} = scope, attrs) do
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with {:ok, bidding = %Bidding{}} <-
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%Bidding{}
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|> Bidding.changeset(attrs, scope)
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|> Repo.insert() do
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broadcast_bidding(scope, {:created, bidding})
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{:ok, bidding}
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end
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end
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@doc """
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Updates a bidding.
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## Examples
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iex> update_bidding(scope, bidding, %{field: new_value})
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{:ok, %Bidding{}}
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iex> update_bidding(scope, bidding, %{field: bad_value})
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{:error, %Ecto.Changeset{}}
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"""
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def update_bidding(%Scope{} = scope, %Bidding{} = bidding, attrs) do
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true = bidding.user_id == scope.user.id
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with {:ok, bidding = %Bidding{}} <-
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bidding
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|> Bidding.changeset(attrs, scope)
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|> Repo.update() do
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broadcast_bidding(scope, {:updated, bidding})
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{:ok, bidding}
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end
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end
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@doc """
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Deletes a bidding.
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## Examples
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iex> delete_bidding(scope, bidding)
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{:ok, %Bidding{}}
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iex> delete_bidding(scope, bidding)
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{:error, %Ecto.Changeset{}}
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"""
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def delete_bidding(%Scope{} = scope, %Bidding{} = bidding) do
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true = bidding.user_id == scope.user.id
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with {:ok, bidding = %Bidding{}} <-
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Repo.delete(bidding) do
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broadcast_bidding(scope, {:deleted, bidding})
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{:ok, bidding}
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end
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end
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@doc """
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Returns an `%Ecto.Changeset{}` for tracking bidding changes.
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## Examples
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iex> change_bidding(scope, bidding)
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%Ecto.Changeset{data: %Bidding{}}
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"""
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def change_bidding(%Scope{} = scope, %Bidding{} = bidding, attrs \\ %{}) do
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true = bidding.user_id == scope.user.id
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Bidding.changeset(bidding, attrs, scope)
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end
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end
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