defmodule ComponentsElixir.Repo.Migrations.CreateStorageLocations do
  use Ecto.Migration

  def change do
    create table(:storage_locations) do
      add :name, :string, null: false
      add :description, :text
      add :qr_code, :string, null: false
      add :level, :integer, default: 0
      add :path, :text, null: false
      add :is_active, :boolean, default: true
      add :parent_id, references(:storage_locations, on_delete: :restrict)

      timestamps()
    end

    create unique_index(:storage_locations, [:qr_code])
    create index(:storage_locations, [:parent_id])
    create index(:storage_locations, [:level])
    create unique_index(:storage_locations, [:name, :parent_id])

    # Enable trigram extension for path searching
    execute "CREATE EXTENSION IF NOT EXISTS pg_trgm", "DROP EXTENSION IF EXISTS pg_trgm"

    # GIN index for fast path-based searches
    execute "CREATE INDEX storage_locations_path_gin_idx ON storage_locations USING gin(path gin_trgm_ops)",
            "DROP INDEX storage_locations_path_gin_idx"
  end
end