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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     path =
  13       case Path.type(path) do
  14         :relative ->
  15           Path.join(Application.app_dir(:pleroma), path)
  16
  17         :absolute ->
  18           path
  19       end
  20
  21     if not File.dir?(path) do
  22       raise_missing_migrations(Path.relative_to_cwd(path), repo)
  23     end
  24
  25     path
  26   end
  27
  28   @doc """
  29   Returns the private repository path relative to the source.
  30   """
  31   def source_repo_priv(repo) do
  32     config = repo.config()
  33     priv = config[:priv] || "priv/#{repo |> Module.split() |> List.last() |> Macro.underscore()}"
  34     Path.join(Application.app_dir(:pleroma), priv)
  35   end
  36
  37   defp raise_missing_migrations(path, repo) do
  38     raise("""
  39     Could not find migrations directory #{inspect(path)}
  40     for repo #{inspect(repo)}.
  41     This may be because you are in a new project and the
  42     migration directory has not been created yet. Creating an
  43     empty directory at the path above will fix this error.
  44     If you expected existing migrations to be found, please
  45     make sure your repository has been properly configured
  46     and the configured path exists.
  47     """)
  48   end
  49 end