pile_nav_new/lib/pages/task/taskcontroller.dart

import 'dart:convert';
import 'dart:developer';
import 'dart:io';
import 'package:cpnav/pages/task/model.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:get_storage/get_storage.dart';
import 'package:path_provider/path_provider.dart';
import 'package:scence_map/scence_map.dart';

import 'task_page.dart';

class TaskController extends GetxController {
  final box = GetStorage(); // 实例化 GetStorage
  // List<bool> isDialogShown = [false, false, false, false, false].obs;
  var currentask = TaskItem(
      list: [],
      name: "  ",
      id: 0,
      utc: 0,
      originLabel: "本地",
      workTotal: 0,
      centerPileInfo: CenterPileInfo(
        x: 0,
        y: 0,
        // direction: 0,
      )).obs;
  var updateCount = 0.obs;
  var taskList = <TaskItem>[].obs;
  @override
  void onInit() {
    loadTasks();
    super.onInit();
    TaskItem? sysTask = getTask();
    if (sysTask != null) {
      currentask.value = sysTask;
    }
    ever(currentask, (task) {
      mapcontroller.pilePoints.value = task.list;
      mapcontroller.updateCount++;
      plumDataController.centerXY.value =
          Offset(task.centerPileInfo.x, task.centerPileInfo.y);
      // plumDataController.direction.value=task.centerPileInfo.direction;
      plumDataController.angle.value = task.centerPileInfo.angle;
      plumDataController.space.value = task.centerPileInfo.space;
      plumDataController.pileWidth.value = task.centerPileInfo.pileWidth;
      List<double> distances = []; //px
      for (var i = 0; i < 4; i++) {
        double distance = task.centerPileInfo.distances[i];
        // m->px
        distances.add(distance / mapcontroller.pixel2MeterRatio);
      }
      plumDataController.distanceOfCenter.value = distances;
      updateCount++;
      editTask(task);
      loadTasks();
      Map data = task.toJson();
      setTask(data);
      update();
    });
    TaskItem? loadtask = getTask();
    if (loadtask != null) {
      currentask.value = loadtask;
    }
  }

  Future<List<File>> _getLocalFiles() async {
    final directory = await getApplicationDocumentsDirectory();
    final folder = Directory('${directory.path}/tasks');

    // 检查文件夹是否存在，不存在则创建
    if (!await folder.exists()) {
      await folder.create(recursive: true);
    }

    // 获取所有 JSON 文件
    return folder
        .listSync()
        .whereType<File>()
        .where((file) => file.path.endsWith('.json'))
        .toList();
  }

  Future<List<TaskItem>> readAllTaskItems() async {
    List<TaskItem> allTasks = [];
    List<File> files = await _getLocalFiles();

    for (File file in files) {
      try {
        String contents = await file.readAsString();

        allTasks.add(TaskItem.fromJson(jsonDecode(contents)));
      } catch (e) {
        // 处理读取文件或解析 JSON 的错误
        log('Error reading ${file.path}: $e');
      }
    }

    return allTasks;
  }

  Future<void> loadTasks() async {
    List<TaskItem> tasks = await readAllTaskItems();
    taskList.value = tasks;
  }

  Future<void> editTask(TaskItem info) async {
    final directory = await getApplicationDocumentsDirectory();
    final filePath = '${directory.path}/tasks/${info.utc}.json';
    final file = File(filePath);
    Map data = info.toJson();
    String jsonString = jsonEncode(data);

    // 写入 JSON 字符串到文件
    await file.writeAsString(jsonString);
  }

  setTask(Map data) {
    box.write('task', data);
  }

  TaskItem? getTask() {
    final p = box.read("task");
    if (p != null) {
      return TaskItem.fromJson(p);
    }
    return null;
  }
}

// 任务问题 
// 2. 二次进入任务页面 可设置的点不重合
// 3. 移动之后 点有问题 (中心点点完之后就跑了)
// 4. 当没点坐标 就点了方向设置就坏了
// 5. 当list 删除部分点之后保存数据有问题(over 直接删了保存到文件中 合适吗？)
// 状态 (规划 完成 不在规划范围内)