defmodule FirehoseWeb.MicroprintsLiveTest do
  use ExUnit.Case, async: true

  describe "scan_source_files/0" do
    test "returns exactly 2 files" do
      files = FirehoseWeb.MicroprintsLive.scan_source_files()

      assert length(files) == 2
    end

    test "returns only .ex files from app/ and blogex/ directories" do
      files = FirehoseWeb.MicroprintsLive.scan_source_files()

      # With the 2-file limit, check that returned files are valid .ex paths
      Enum.each(files, fn file ->
        assert String.ends_with?(file, ".ex")
        assert String.starts_with?(file, "lib/") or String.starts_with?(file, "../blogex/")
      end)
    end

    test "does not include files from _build/ directory" do
      files = FirehoseWeb.MicroprintsLive.scan_source_files()

      refute Enum.any?(files, &String.starts_with?(&1, "_build/"))
    end

    test "does not include files from deps/ directory" do
      files = FirehoseWeb.MicroprintsLive.scan_source_files()

      refute Enum.any?(files, &String.starts_with?(&1, "deps/"))
    end

    test "does not include files from examples/ directory" do
      files = FirehoseWeb.MicroprintsLive.scan_source_files()

      refute Enum.any?(files, &String.contains?(&1, "/examples/"))
    end

    test "does not include test files" do
      files = FirehoseWeb.MicroprintsLive.scan_source_files()

      refute Enum.any?(files, &String.contains?(&1, "/test/"))
    end

    test "paths are relative (no leading slash or absolute path)" do
      files = FirehoseWeb.MicroprintsLive.scan_source_files()

      refute Enum.any?(files, &String.starts_with?(&1, "/"))
    end

    test "app paths do not contain source dir prefix" do
      files = FirehoseWeb.MicroprintsLive.scan_source_files()

      app_files = Enum.filter(files, &String.starts_with?(&1, "lib/"))
      refute Enum.any?(app_files, &String.starts_with?(&1, "app/"))
    end

    test "blogex paths start with ../blogex/" do
      files = FirehoseWeb.MicroprintsLive.scan_source_files()

      blogex_files = Enum.filter(files, &String.starts_with?(&1, "../blogex/"))
      # With the 2-file limit, blogex files may or may not be included
      # depending on which files are most recently modified
      assert is_list(blogex_files)
    end
  end
end