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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-onl
   4
   5 defmodule Mix.Tasks.Pleroma.Ecto do
   6   @doc """
   7   Ensures the given repository's migrations path exists on the file system.
   8   """
   9   @spec ensure_migrations_path(Ecto.Repo.t(), Keyword.t()) :: String.t()
  10   def ensure_migrations_path(repo, opts) do
  11     path = opts[:migrations_path] || Path.join(source_repo_priv(repo), "migrations")
  12
  13     path =
  14       case Path.type(path) do
  15         :relative ->
  16           Path.join(Application.app_dir(:pleroma), path)
  17
  18         :absolute ->
  19           path
  20       end
  21
  22     if not File.dir?(path) do
  23       raise_missing_migrations(Path.relative_to_cwd(path), repo)
  24     end
  25
  26     path
  27   end
  28
  29   @doc """
  30   Returns the private repository path relative to the source.
  31   """
  32   def source_repo_priv(repo) do
  33     config = repo.config()
  34     priv = config[:priv] || "priv/#{repo |> Module.split() |> List.last() |> Macro.underscore()}"
  35     Path.join(Application.app_dir(:pleroma), priv)
  36   end
  37
  38   defp raise_missing_migrations(path, repo) do
  39     raise("""
  40     Could not find migrations directory #{inspect(path)}
  41     for repo #{inspect(repo)}.
  42     This may be because you are in a new project and the
  43     migration directory has not been created yet. Creating an
  44     empty directory at the path above will fix this error.
  45     If you expected existing migrations to be found, please
  46     make sure your repository has been properly configured
  47     and the configured path exists.
  48     """)
  49   end
  50 end