defmodule AshPostgres.TestRepo.Migrations.InstallAshFunctions do
  @moduledoc """
  Installs any extensions that are mentioned in the repo's `installed_extensions/0` callback

  This file was autogenerated with `mix ash_postgres.generate_migrations`
  """

  use Ecto.Migration

  def up do
    execute("""
    ALTER FUNCTION ash_elixir_or(left BOOLEAN, in right ANYCOMPATIBLE, out f1 ANYCOMPATIBLE) IMMUTABLE
    """)

    execute("""
    ALTER FUNCTION ash_elixir_or(left ANYCOMPATIBLE, in right ANYCOMPATIBLE, out f1 ANYCOMPATIBLE) IMMUTABLE
    """)

    execute("""
    ALTER FUNCTION ash_elixir_and(left BOOLEAN, in right ANYCOMPATIBLE, out f1 ANYCOMPATIBLE) IMMUTABLE
    """)

    execute("""
    ALTER FUNCTION ash_elixir_and(left ANYCOMPATIBLE, in right ANYCOMPATIBLE, out f1 ANYCOMPATIBLE) IMMUTABLE
    """)

    execute("""
    CREATE OR REPLACE FUNCTION ash_trim_whitespace(arr text[])
    RETURNS text[] AS $$
    DECLARE
        start_index INT = 1;
        end_index INT = array_length(arr, 1);
    BEGIN
        WHILE start_index <= end_index AND arr[start_index] = '' LOOP
            start_index := start_index + 1;
        END LOOP;

        WHILE end_index >= start_index AND arr[end_index] = '' LOOP
            end_index := end_index - 1;
        END LOOP;

        IF start_index > end_index THEN
            RETURN ARRAY[]::text[];
        ELSE
            RETURN arr[start_index : end_index];
        END IF;
    END; $$
    LANGUAGE plpgsql
    IMMUTABLE;
    """)
  end

  def down do
    # Uncomment this if you actually want to uninstall the extensions
    # when this migration is rolled back:
    execute(
      "DROP FUNCTION IF EXISTS ash_elixir_and(BOOLEAN, ANYCOMPATIBLE), ash_elixir_and(ANYCOMPATIBLE, ANYCOMPATIBLE), ash_elixir_or(ANYCOMPATIBLE, ANYCOMPATIBLE), ash_elixir_or(BOOLEAN, ANYCOMPATIBLE)"
    )
  end
end