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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-onl
   4 defmodule Mix.Tasks.Pleroma.Ecto do
   5   @doc """
   6   Ensures the given repository's migrations path exists on the file system.
   7   """
   8   @spec ensure_migrations_path(Ecto.Repo.t(), Keyword.t()) :: String.t()
   9   def ensure_migrations_path(repo, opts) do
  10     path = opts[:migrations_path] || Path.join(source_repo_priv(repo), "migrations")
  11
  12     if not File.dir?(path) do
  13       raise_missing_migrations(Path.relative_to_cwd(path), repo)
  14     end
  15
  16     path
  17   end
  18
  19   @doc """
  20   Returns the private repository path relative to the source.
  21   """
  22   def source_repo_priv(repo) do
  23     config = repo.config()
  24     priv = config[:priv] || "priv/#{repo |> Module.split() |> List.last() |> Macro.underscore()}"
  25     Path.join(File.cwd!(), priv)
  26   end
  27
  28   defp raise_missing_migrations(path, repo) do
  29     raise("""
  30     Could not find migrations directory #{inspect(path)}
  31     for repo #{inspect(repo)}.
  32     This may be because you are in a new project and the
  33     migration directory has not been created yet. Creating an
  34     empty directory at the path above will fix this error.
  35     If you expected existing migrations to be found, please
  36     make sure your repository has been properly configured
  37     and the configured path exists.
  38     """)
  39   end
  40 end