// 生成托盘图标（32x32 PNG）
//   dart run tool/gen_tray_icon.dart
// - assets/tray_icon_template.png：macOS template 图标（纯黑+alpha，系统按菜单栏深浅自动反色）
// - assets/tray_icon_win.png：Windows 彩色图标（绿底+深色卡片剪影）
import 'dart:io';

import 'package:image/image.dart';

final _black = ColorRgba8(0, 0, 0, 255);
final _green = ColorRgba8(74, 222, 128, 255); // 主操作绿 #4ADE80
final _navy = ColorRgba8(15, 23, 42, 255); // 深蓝黑 #0F172A

bool _inRoundRect(int x, int y, int x0, int y0, int x1, int y1, int r) {
  if (x < x0 || x > x1 || y < y0 || y > y1) return false;
  final nearLeft = x < x0 + r, nearRight = x > x1 - r;
  final nearTop = y < y0 + r, nearBottom = y > y1 - r;
  if (!(nearLeft || nearRight) || !(nearTop || nearBottom)) return true; // 十字区
  final cx = nearLeft ? x0 + r : x1 - r;
  final cy = nearTop ? y0 + r : y1 - r;
  final dx = x - cx, dy = y - cy;
  return dx * dx + dy * dy <= r * r;
}

/// 卡片剪影（含磁条挖空）画到 img 上
void _drawCard(Image img, int x0, int y0, int x1, int y1, ColorUint8 color) {
  const r = 2;
  final stripeY0 = y0 + (y1 - y0 + 1) ~/ 3;
  final stripeY1 = stripeY0 + 2;
  for (var y = y0; y <= y1; y++) {
    for (var x = x0; x <= x1; x++) {
      if (!_inRoundRect(x, y, x0, y0, x1, y1, r)) continue;
      if (y >= stripeY0 && y <= stripeY1) continue; // 磁条挖空
      img.setPixel(x, y, color);
    }
  }
}

void main() {
  // macOS template：透明底 + 黑卡片
  final mac = Image(width: 32, height: 32, numChannels: 4);
  _drawCard(mac, 5, 8, 26, 23, _black);

  // Windows：绿色圆角底 + 深色卡片
  final win = Image(width: 32, height: 32, numChannels: 4);
  for (var y = 1; y <= 30; y++) {
    for (var x = 1; x <= 30; x++) {
      if (_inRoundRect(x, y, 1, 1, 30, 30, 6)) win.setPixel(x, y, _green);
    }
  }
  _drawCard(win, 7, 9, 24, 22, _navy);

  for (final entry in [('assets/tray_icon_template.png', mac), ('assets/tray_icon_win.png', win)]) {
    final file = File(entry.$1);
    file.parent.createSync(recursive: true);
    file.writeAsBytesSync(encodePng(entry.$2));
    // ignore: avoid_print
    print('written ${entry.$1}');
  }
}