113 lines
3.5 KiB
Elixir
113 lines
3.5 KiB
Elixir
defmodule Memex.Contexts.Context do
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@moduledoc """
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Represents a document that synthesizes multiple concepts as defined by notes
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into a single consideration
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"""
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use Ecto.Schema
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import Ecto.Changeset
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import MemexWeb.Gettext
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alias Ecto.{Changeset, UUID}
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alias Memex.{Accounts.User, Repo}
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@derive {Phoenix.Param, key: :slug}
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@derive {Jason.Encoder,
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only: [
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:slug,
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:content,
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:tags,
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:visibility,
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:inserted_at,
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:updated_at
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]}
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@primary_key {:id, :binary_id, autogenerate: true}
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@foreign_key_type :binary_id
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schema "contexts" do
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field :slug, :string
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field :content, :string
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field :tags, {:array, :string}
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field :tags_string, :string, virtual: true
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field :visibility, Ecto.Enum, values: [:public, :private, :unlisted]
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field :user_id, :binary_id
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timestamps()
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end
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@type t :: %__MODULE__{
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slug: slug(),
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content: String.t(),
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tags: [String.t()] | nil,
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tags_string: String.t() | nil,
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visibility: :public | :private | :unlisted,
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user_id: User.id(),
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inserted_at: NaiveDateTime.t(),
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updated_at: NaiveDateTime.t()
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}
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@type id :: UUID.t()
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@type slug :: String.t()
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@type changeset :: Changeset.t(t())
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@doc false
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@spec create_changeset(attrs :: map(), User.t()) :: changeset()
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def create_changeset(attrs, %User{id: user_id}) do
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%__MODULE__{}
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|> cast(attrs, [:slug, :content, :tags, :visibility])
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|> change(user_id: user_id)
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|> cast_tags_string(attrs)
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|> validate_format(:slug, ~r/^[\p{L}\p{N}\-]+$/,
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message: dgettext("errors", "invalid format: only numbers, letters and hyphen are accepted")
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)
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|> validate_required([:slug, :content, :user_id, :visibility])
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|> unique_constraint(:slug)
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|> unsafe_validate_unique(:slug, Repo)
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end
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@spec update_changeset(t(), attrs :: map(), User.t()) :: changeset()
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def update_changeset(%{user_id: user_id} = note, attrs, %User{id: user_id}) do
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note
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|> cast(attrs, [:slug, :content, :tags, :visibility])
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|> cast_tags_string(attrs)
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|> validate_format(:slug, ~r/^[\p{L}\p{N}\-]+$/,
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message: dgettext("errors", "invalid format: only numbers, letters and hyphen are accepted")
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)
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|> validate_required([:slug, :content, :visibility])
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|> unique_constraint(:slug)
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|> unsafe_validate_unique(:slug, Repo)
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end
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defp cast_tags_string(changeset, attrs) do
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changeset
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|> put_change(:tags_string, changeset |> get_field(:tags) |> get_tags_string())
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|> cast(attrs, [:tags_string])
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|> validate_format(:tags_string, ~r/^[\p{L}\p{N}\-\, ]+$/,
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message:
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dgettext(
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"errors",
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"invalid format: only numbers, letters and hyphen are accepted. tags must be comma or space delimited"
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)
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)
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|> cast_tags()
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end
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defp cast_tags(%{valid?: false} = changeset), do: changeset
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defp cast_tags(%{valid?: true} = changeset) do
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tags = changeset |> get_field(:tags_string) |> process_tags()
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changeset |> put_change(:tags, tags)
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end
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defp process_tags(tags_string) when tags_string |> is_binary() do
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tags_string
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|> String.split([",", " "], trim: true)
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|> Enum.map(fn str -> str |> String.trim() end)
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|> Enum.reject(fn str -> str in [nil, ""] end)
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|> Enum.sort()
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end
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defp process_tags(_other_tags_string), do: []
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@spec get_tags_string([String.t()] | nil) :: String.t()
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def get_tags_string(nil), do: ""
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def get_tags_string(tags) when tags |> is_list(), do: tags |> Enum.join(",")
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end
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