import 'package:flutter/material.dart';
import 'package:fis_ui/index.dart';
import 'package:fis_ui/base_define/page.dart';
import 'package:get/get.dart';

import '../index.dart';
import 'widgets.dart';

/// 摄像头检测
class CameraDetection extends GetView<HardwareDetectionController>
    implements FPage {
  CameraDetection({Key? key}) : super(key: key);

  @override
  String get pageName => "device_detection";

  final smallTitleStyle = TextStyle(
    fontSize: 14,
    fontWeight: FontWeight.bold,
    height: 1,
  );

  /// 副标题行高：[摄像头]、[麦克风]、[扬声器]
  static const _subTitleRowHright = 30.0;

  @override
  Widget build(BuildContext context) {
    return Row(
      children: [
        Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Container(
              width: 250,
              height: _subTitleRowHright,
              child: Row(
                children: [
                  Text("摄像头", style: smallTitleStyle),
                  SizedBox(width: 10),
                  Obx(() {
                    if (controller.state.cameraAvailable == null)
                      return Container();
                    return controller.state.cameraAvailable!
                        ? CommonWidgets.deviceAvailableTip()
                        : CommonWidgets.deviceUnavailableTip();
                  }),
                  Expanded(child: Container()),
                  InkWell(
                    onTap: controller.refreshCameraList,
                    child: Icon(
                      Icons.refresh,
                      size: 18,
                    ),
                  )
                ],
              ),
            ),
            _cameraSelector(),
          ],
        ),
        SizedBox(width: 20),
        DetectButton(
          deviceType: HardwareDeviceType.camera,
          subTitleRowHright: _subTitleRowHright,
        ),
      ],
    );
  }

  /// 摄像头选择器
  Widget _cameraSelector() {
    return Obx(
      () {
        List<HardwareDevice> source = controller.state.cameraList;
        bool noCamera = source.isEmpty;
        return noCamera
            ? Container(
                width: 250,
                height: 30,
                child: Center(
                  child: CommonWidgets.deviceNotFoundTip(),
                ),
              )
            : FSelect<HardwareDevice, String>(
                source: source,
                height: 30,
                width: 250,
                value: controller.state.currentCamera?.id,
                optionValueExtractor: (value) {
                  return value.id;
                },
                optionLabelExtractor: (value) {
                  return value.name;
                },
                onSelectChanged: (value, index) {
                  if (value == null) return;
                  controller.selectCameraById(value);
                },
                fontSize: 14,
              );
      },
    );
  }
}