138 lines
3.2 KiB
Elixir
138 lines
3.2 KiB
Elixir
defmodule Cannery.Tags do
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@moduledoc """
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The Tags context.
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"""
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import Ecto.Query, warn: false
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import CanneryWeb.Gettext
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alias Cannery.{Accounts.User, Repo, Tags.Tag}
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alias Ecto.Changeset
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@doc """
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Returns the list of tags.
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## Examples
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iex> list_tags(%User{id: 123})
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[%Tag{}, ...]
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"""
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@spec list_tags(User.t()) :: [Tag.t()]
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def list_tags(%{id: user_id}),
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do: Repo.all(from t in Tag, where: t.user_id == ^user_id, order_by: t.name)
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@doc """
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Gets a single tag.
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## Examples
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iex> get_tag(123, %User{id: 123})
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{:ok, %Tag{}}
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iex> get_tag(456, %User{id: 123})
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{:error, "tag not found"}
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"""
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@spec get_tag(Tag.id(), User.t()) :: {:ok, Tag.t()} | {:error, String.t()}
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def get_tag(id, %User{id: user_id}) do
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Repo.one(from t in Tag, where: t.id == ^id and t.user_id == ^user_id)
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|> case do
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nil -> {:error, dgettext("errors", "Tag not found")}
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tag -> {:ok, tag}
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end
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end
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@doc """
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Gets a single tag.
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Raises `Ecto.NoResultsError` if the Tag does not exist.
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## Examples
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iex> get_tag!(123, %User{id: 123})
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%Tag{}
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iex> get_tag!(456, %User{id: 123})
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** (Ecto.NoResultsError)
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"""
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@spec get_tag!(Tag.id(), User.t()) :: Tag.t()
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def get_tag!(id, %User{id: user_id}),
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do: Repo.one!(from t in Tag, where: t.id == ^id and t.user_id == ^user_id)
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@doc """
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Creates a tag.
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## Examples
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iex> create_tag(%{field: value}, %User{id: 123})
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{:ok, %Tag{}}
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iex> create_tag(%{field: bad_value}, %User{id: 123})
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{:error, %Changeset{}}
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"""
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@spec create_tag(attrs :: map(), User.t()) ::
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{:ok, Tag.t()} | {:error, Changeset.t(Tag.new_tag())}
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def create_tag(attrs, %User{} = user),
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do: %Tag{} |> Tag.create_changeset(user, attrs) |> Repo.insert()
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@doc """
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Updates a tag.
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## Examples
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iex> update_tag(tag, %{field: new_value}, %User{id: 123})
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{:ok, %Tag{}}
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iex> update_tag(tag, %{field: bad_value}, %User{id: 123})
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{:error, %Changeset{}}
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"""
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@spec update_tag(Tag.t(), attrs :: map(), User.t()) ::
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{:ok, Tag.t()} | {:error, Changeset.t(Tag.t())}
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def update_tag(%Tag{user_id: user_id} = tag, attrs, %User{id: user_id}),
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do: tag |> Tag.update_changeset(attrs) |> Repo.update()
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@doc """
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Deletes a tag.
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## Examples
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iex> delete_tag(tag, %User{id: 123})
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{:ok, %Tag{}}
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iex> delete_tag(tag, %User{id: 123})
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{:error, %Changeset{}}
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"""
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@spec delete_tag(Tag.t(), User.t()) :: {:ok, Tag.t()} | {:error, Changeset.t(Tag.t())}
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def delete_tag(%Tag{user_id: user_id} = tag, %User{id: user_id}), do: tag |> Repo.delete()
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@doc """
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Deletes a tag.
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## Examples
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iex> delete_tag!(tag, %User{id: 123})
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%Tag{}
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"""
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@spec delete_tag!(Tag.t(), User.t()) :: Tag.t()
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def delete_tag!(%Tag{user_id: user_id} = tag, %User{id: user_id}), do: tag |> Repo.delete!()
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@doc """
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Get a random tag bg_color in `#ffffff` hex format
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## Examples
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iex> random_color()
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"#cc0066"
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"""
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@spec random_bg_color() :: <<_::7>>
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def random_bg_color do
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["#cc0066", "#ff6699", "#6666ff", "#0066cc", "#00cc66", "#669900", "#ff9900", "#996633"]
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|> Enum.random()
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end
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end
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