124 lines
2.2 KiB
Elixir
124 lines
2.2 KiB
Elixir
defmodule Chesstrainer.Endgames do
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@moduledoc """
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The Endgames context.
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"""
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import Ecto.Query, warn: false
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alias Chesstrainer.Repo
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alias Chesstrainer.Endgames.Endgame
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@doc """
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Returns the list of endgames.
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## Examples
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iex> list_endgames()
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[%Endgame{}, ...]
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"""
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def list_endgames do
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Repo.all(Endgame)
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end
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@doc """
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Gets a single endgame.
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Raises `Ecto.NoResultsError` if the Endgame does not exist.
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## Examples
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iex> get_endgame!(123)
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%Endgame{}
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iex> get_endgame!(456)
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** (Ecto.NoResultsError)
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"""
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def get_endgame!(id), do: Repo.get!(Endgame, id)
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@doc """
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Creates a endgame.
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## Examples
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iex> create_endgame(%{field: value})
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{:ok, %Endgame{}}
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iex> create_endgame(%{field: bad_value})
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{:error, %Ecto.Changeset{}}
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"""
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def create_endgame(attrs) do
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%Endgame{}
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|> Endgame.changeset(attrs)
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|> Repo.insert()
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end
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@doc """
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Updates a endgame.
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## Examples
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iex> update_endgame(endgame, %{field: new_value})
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{:ok, %Endgame{}}
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iex> update_endgame(endgame, %{field: bad_value})
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{:error, %Ecto.Changeset{}}
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"""
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def update_endgame(%Endgame{} = endgame, attrs) do
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# ignore fen on update
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attrs = Map.delete(attrs, "fen")
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endgame
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|> Endgame.changeset(attrs)
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|> Repo.update()
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end
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@doc """
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Deletes a endgame.
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## Examples
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iex> delete_endgame(endgame)
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{:ok, %Endgame{}}
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iex> delete_endgame(endgame)
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{:error, %Ecto.Changeset{}}
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"""
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def delete_endgame(%Endgame{} = endgame) do
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Repo.delete(endgame)
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end
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@doc """
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Returns an `%Ecto.Changeset{}` for tracking endgame changes.
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## Examples
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iex> change_endgame(endgame)
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%Ecto.Changeset{data: %Endgame{}}
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"""
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def change_endgame(%Endgame{} = endgame, attrs \\ %{}) do
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Endgame.changeset(endgame, attrs)
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end
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def add_tag(endgame, tag) do
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endgame
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|> Repo.preload(:tags)
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|> Ecto.Changeset.change()
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|> Ecto.Changeset.put_assoc(:tags, [tag | endgame.tags])
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|> Repo.update()
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end
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def remove_tag(endgame, tag) do
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endgame
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|> Repo.preload(:tags)
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|> Ecto.Changeset.change()
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|> Ecto.Changeset.put_assoc(:tags, endgame.tags -- [tag])
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|> Repo.update()
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end
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end
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