defmodule Mix.Tasks.Firebird.Test do
  @moduledoc """
  Run WASM-related tests.

  Finds and runs all test files that use `Firebird.TestHelpers` or
  test WASM functionality.

  ## Usage

      mix firebird.test              # Run all WASM tests
      mix firebird.test --verbose    # Verbose output

  This is a convenience wrapper around `mix test` that filters for
  WASM-related test files.
  """

  use Mix.Task

  @shortdoc "Run WASM-related tests"

  @impl Mix.Task
  def run(args) do
    # Find test files that reference Firebird or WASM
    wasm_tests =
      Path.wildcard("test/**/*_test.exs")
      |> Enum.filter(fn path ->
        content = File.read!(path)

        String.contains?(content, "Firebird") or
          String.contains?(content, "wasm") or
          String.contains?(content, "WASM")
      end)

    if wasm_tests == [] do
      Mix.shell().info("No WASM-related tests found.")
      Mix.shell().info("Create tests using Firebird.TestHelpers:")

      Mix.shell().info("""

        defmodule MyWasmTest do
          use ExUnit.Case
          import Firebird.TestHelpers

          setup_wasm()

          test "it works", %{wasm: wasm} do
            assert_wasm_result wasm, :add, [5, 3], 8
          end
        end
      """)
    else
      Mix.shell().info("🔥 Running #{length(wasm_tests)} WASM test file(s)...\n")
      Mix.Task.run("test", wasm_tests ++ args)
    end
  end
end