184 lines
5.4 KiB
Elixir
184 lines
5.4 KiB
Elixir
defmodule Cannery.ActivityLog do
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@moduledoc """
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The ActivityLog context.
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"""
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import Ecto.Query, warn: false
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alias Cannery.{Accounts.User, ActivityLog.ShotGroup, Ammo.AmmoGroup, Repo}
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alias Ecto.Multi
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@doc """
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Returns the list of shot_groups.
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## Examples
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iex> list_shot_groups(%User{id: 123})
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[%ShotGroup{}, ...]
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"""
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@spec list_shot_groups(User.t()) :: [ShotGroup.t()]
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def list_shot_groups(%User{id: user_id}) do
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Repo.all(from(sg in ShotGroup, where: sg.user_id == ^user_id))
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end
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@doc """
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Gets a single shot_group.
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Raises `Ecto.NoResultsError` if the Shot group does not exist.
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## Examples
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iex> get_shot_group!(123, %User{id: 123})
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%ShotGroup{}
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iex> get_shot_group!(456, %User{id: 123})
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** (Ecto.NoResultsError)
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"""
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@spec get_shot_group!(ShotGroup.id(), User.t()) :: ShotGroup.t()
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def get_shot_group!(id, %User{id: user_id}) do
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Repo.one!(
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from sg in ShotGroup,
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where: sg.id == ^id,
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where: sg.user_id == ^user_id,
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order_by: sg.date
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)
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end
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@doc """
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Creates a shot_group.
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## Examples
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iex> create_shot_group(%{field: value}, %User{id: 123})
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{:ok, %ShotGroup{}}
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iex> create_shot_group(%{field: bad_value}, %User{id: 123})
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{:error, %Ecto.Changeset{}}
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"""
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@spec create_shot_group(attrs :: map(), User.t(), AmmoGroup.t()) ::
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{:ok, ShotGroup.t()} | {:error, ShotGroup.changeset() | nil}
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def create_shot_group(attrs, user, ammo_group) do
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Multi.new()
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|> Multi.insert(
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:create_shot_group,
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%ShotGroup{} |> ShotGroup.create_changeset(user, ammo_group, attrs)
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)
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|> Multi.run(
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:ammo_group,
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fn repo, %{create_shot_group: %{ammo_group_id: ammo_group_id, user_id: user_id}} ->
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{:ok,
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repo.one(from ag in AmmoGroup, where: ag.id == ^ammo_group_id and ag.user_id == ^user_id)}
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end
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)
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|> Multi.update(
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:update_ammo_group,
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fn %{create_shot_group: %{count: shot_group_count}, ammo_group: %{count: ammo_group_count}} ->
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ammo_group |> AmmoGroup.range_changeset(%{"count" => ammo_group_count - shot_group_count})
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end
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)
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|> Repo.transaction()
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|> case do
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{:ok, %{create_shot_group: shot_group}} -> {:ok, shot_group}
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{:error, :create_shot_group, changeset, _changes_so_far} -> {:error, changeset}
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{:error, _other_transaction, _value, _changes_so_far} -> {:error, nil}
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end
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end
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@doc """
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Updates a shot_group.
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## Examples
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iex> update_shot_group(shot_group, %{field: new_value}, %User{id: 123})
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{:ok, %ShotGroup{}}
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iex> update_shot_group(shot_group, %{field: bad_value}, %User{id: 123})
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{:error, %Ecto.Changeset{}}
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"""
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@spec update_shot_group(ShotGroup.t(), attrs :: map(), User.t()) ::
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{:ok, ShotGroup.t()} | {:error, ShotGroup.changeset() | nil}
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def update_shot_group(
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%ShotGroup{count: count, user_id: user_id} = shot_group,
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attrs,
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%User{id: user_id} = user
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) do
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Multi.new()
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|> Multi.update(
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:update_shot_group,
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shot_group |> ShotGroup.update_changeset(user, attrs)
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)
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|> Multi.run(
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:ammo_group,
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fn repo, %{update_shot_group: %{ammo_group_id: ammo_group_id, user_id: user_id}} ->
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{:ok,
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repo.one(from ag in AmmoGroup, where: ag.id == ^ammo_group_id and ag.user_id == ^user_id)}
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end
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)
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|> Multi.update(
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:update_ammo_group,
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fn %{
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update_shot_group: %{count: new_count},
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ammo_group: %{count: ammo_group_count} = ammo_group
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} ->
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shot_diff_to_add = new_count - count
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new_ammo_group_count = ammo_group_count - shot_diff_to_add
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ammo_group |> AmmoGroup.range_changeset(%{"count" => new_ammo_group_count})
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end
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)
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|> Repo.transaction()
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|> case do
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{:ok, %{update_shot_group: shot_group}} -> {:ok, shot_group}
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{:error, :update_shot_group, changeset, _changes_so_far} -> {:error, changeset}
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{:error, _other_transaction, _value, _changes_so_far} -> {:error, nil}
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end
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end
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@doc """
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Deletes a shot_group.
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## Examples
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iex> delete_shot_group(shot_group, %User{id: 123})
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{:ok, %ShotGroup{}}
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iex> delete_shot_group(shot_group, %User{id: 123})
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{:error, %Ecto.Changeset{}}
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"""
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@spec delete_shot_group(ShotGroup.t(), User.t()) ::
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{:ok, ShotGroup.t()} | {:error, ShotGroup.changeset()}
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def delete_shot_group(
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%ShotGroup{user_id: user_id} = shot_group,
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%User{id: user_id}
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) do
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Multi.new()
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|> Multi.delete(:delete_shot_group, shot_group)
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|> Multi.run(
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:ammo_group,
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fn repo, %{delete_shot_group: %{ammo_group_id: ammo_group_id, user_id: user_id}} ->
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{:ok,
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repo.one(from ag in AmmoGroup, where: ag.id == ^ammo_group_id and ag.user_id == ^user_id)}
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end
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)
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|> Multi.update(
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:update_ammo_group,
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fn %{
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delete_shot_group: %{count: count},
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ammo_group: %{count: ammo_group_count} = ammo_group
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} ->
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new_ammo_group_count = ammo_group_count + count
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ammo_group |> AmmoGroup.range_changeset(%{"count" => new_ammo_group_count})
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end
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)
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|> Repo.transaction()
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|> case do
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{:ok, %{delete_shot_group: shot_group}} -> {:ok, shot_group}
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{:error, :delete_shot_group, changeset, _changes_so_far} -> {:error, changeset}
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{:error, _other_transaction, _value, _changes_so_far} -> {:error, nil}
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end
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end
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end
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