# frozen_string_literal: true

require "test_helper"
require "tmpdir"

class ConfigTest < Minitest::Test
  MISSING = "/nonexistent/volumen.toml"

  def test_defaults_when_file_missing
    config = Volumen::Config.load(path: MISSING)
    assert_equal 9090, config.port
    assert_equal "en", config.language
  end

  def test_overrides_apply
    config = Volumen::Config.load(
      path: MISSING,
      overrides: { host: "127.0.0.1", port: 9000, content: "/srv/posts" }
    )
    assert_equal "127.0.0.1", config.host
    assert_equal 9000, config.port
    assert_equal "/srv/posts", config.content_dir
  end

  def test_does_not_mutate_defaults
    Volumen::Config.load(path: MISSING, overrides: { host: "10.0.0.1" })
    assert_equal "0.0.0.0", Volumen::Config.load(path: MISSING).host
  end

  def test_loads_and_merges_file
    Dir.mktmpdir do |dir|
      path = File.join(dir, "config.toml")
      File.write(path, "[site]\ntitle = \"Custom\"\n")
      config = Volumen::Config.load(path: path)
      assert_equal "Custom", config.site["title"]
      assert_equal 9090, config.port
    end
  end

  def test_generate_default_writes_template
    Dir.mktmpdir do |dir|
      path = File.join(dir, "sub", "config.toml")
      assert_equal path, Volumen::Config.generate_default(path)
      assert_path_exists path
      assert_equal 9090, Volumen::Config.load(path: path).port
    end
  end

  def test_generate_default_skips_existing
    Dir.mktmpdir do |dir|
      path = File.join(dir, "config.toml")
      File.write(path, "[server]\nport = 9999\n")
      assert_nil Volumen::Config.generate_default(path)
      assert_equal 9999, Volumen::Config.load(path: path).port
    end
  end
end