// Tests for per-tool settings memory (F1/F5/F11).

import 'package:flutter_test/flutter_test.dart';

import 'package:badnote/editor/input/tool_settings.dart';

void main() {
  test('defaults: pen active, per-tool colors/widths', () {
    final s = ToolSettings.defaults();
    expect(s.active, EditorToolType.pen);
    expect(s.configFor(EditorToolType.pen).color, 0xFF000000);
    expect(s.configFor(EditorToolType.highlighter).width, 0.02);
    expect(s.activeConfig, s.configFor(EditorToolType.pen));
  });

  test('switching tools remembers each tool\'s own config', () {
    var s = ToolSettings.defaults();
    // Customize pen, switch to highlighter, customize it, switch back.
    s = s.withColor(0xFFFF0000).withWidth(0.005); // pen → red, 0.005
    s = s.withActive(EditorToolType.highlighter);
    expect(s.activeConfig.color, 0x80FFEB3B); // highlighter unchanged
    s = s.withColor(0x8000FF00); // highlighter → green
    s = s.withActive(EditorToolType.pen);
    // Pen restored to its red/0.005, NOT the highlighter's green.
    expect(s.activeConfig.color, 0xFFFF0000);
    expect(s.activeConfig.width, 0.005);
    // Highlighter kept its green.
    expect(s.configFor(EditorToolType.highlighter).color, 0x8000FF00);
  });

  test('withColor/withWidth only touch the active tool', () {
    var s = ToolSettings.defaults().withActive(EditorToolType.highlighter);
    final penBefore = s.configFor(EditorToolType.pen);
    s = s.withColor(0x80123456);
    expect(s.configFor(EditorToolType.pen), penBefore); // pen untouched
    expect(s.activeConfig.color, 0x80123456);
  });

  test('immutability: updates return new instances, original unchanged', () {
    final a = ToolSettings.defaults();
    final b = a.withActive(EditorToolType.eraser);
    expect(a.active, EditorToolType.pen);
    expect(b.active, EditorToolType.eraser);
    expect(a == b, isFalse);
  });

  test('value equality', () {
    expect(ToolSettings.defaults(), ToolSettings.defaults());
    expect(ToolSettings.defaults().withActive(EditorToolType.eraser) ==
        ToolSettings.defaults(), isFalse);
  });

  test('ToolConfig copyWith + equality', () {
    const c = ToolConfig(color: 0xFF000000, width: 0.003);
    expect(c.copyWith(width: 0.01), const ToolConfig(color: 0xFF000000, width: 0.01));
    expect(c.copyWith(), c);
  });
}