flutter_server_box/lib/view/page/server/detail.dart

import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:toolbox/core/extension/context/common.dart';
import 'package:toolbox/core/extension/context/locale.dart';
import 'package:toolbox/core/extension/order.dart';
import 'package:toolbox/data/model/server/cpu.dart';
import 'package:toolbox/data/model/server/disk.dart';
import 'package:toolbox/data/model/server/net_speed.dart';
import 'package:toolbox/data/model/server/server_private_info.dart';
import 'package:toolbox/data/model/server/system.dart';
import 'package:toolbox/data/res/store.dart';
import 'package:toolbox/view/widget/expand_tile.dart';
import 'package:toolbox/view/widget/server_func_btns.dart';
import 'package:toolbox/view/widget/value_notifier.dart';

import '../../../core/extension/numx.dart';
import '../../../core/route.dart';
import '../../../data/model/server/server.dart';
import '../../../data/model/server/server_status.dart';
import '../../../data/provider/server.dart';
import '../../../data/res/color.dart';
import '../../../data/res/default.dart';
import '../../../data/res/ui.dart';
import '../../widget/custom_appbar.dart';
import '../../widget/cardx.dart';

class ServerDetailPage extends StatefulWidget {
  const ServerDetailPage({Key? key, required this.spi}) : super(key: key);

  final ServerPrivateInfo spi;

  @override
  _ServerDetailPageState createState() => _ServerDetailPageState();
}

class _ServerDetailPageState extends State<ServerDetailPage>
    with SingleTickerProviderStateMixin {
  late MediaQueryData _media;
  final Order<String> _cardsOrder = [];

  late final _textFactor = Stores.setting.textFactor.fetch();

  late final _cardBuildMap = Map.fromIterables(
    Defaults.detailCardOrder,
    [
      _buildUpTimeAndSys,
      _buildCPUView,
      _buildMemView,
      _buildSwapView,
      _buildDiskView,
      _buildNetView,
      _buildTemperature,
    ],
  );

  final _netSortType = ValueNotifier(_NetSortType.device);

  @override
  void didChangeDependencies() {
    super.didChangeDependencies();
    _media = MediaQuery.of(context);
  }

  @override
  void initState() {
    super.initState();
    _cardsOrder.addAll(Stores.setting.detailCardOrder.fetch());
  }

  @override
  Widget build(BuildContext context) {
    return Consumer<ServerProvider>(builder: (_, provider, __) {
      final s = widget.spi.server;
      if (s == null) {
        return Scaffold(
          body: Center(
            child: Text(l10n.noClient),
          ),
        );
      }
      return _buildMainPage(s);
    });
  }

  Widget _buildMainPage(Server si) {
    final buildFuncs = !Stores.setting.moveOutServerTabFuncBtns.fetch();
    return Scaffold(
      appBar: CustomAppBar(
        title: Text(si.spi.name, style: UIs.textSize18),
        actions: [
          IconButton(
            icon: const Icon(Icons.edit),
            onPressed: () async {
              final delete = await AppRoute.serverEdit(spi: si.spi).go(context);
              if (delete == true) {
                context.pop();
              }
            },
          )
        ],
      ),
      body: ListView.builder(
        padding: EdgeInsets.only(
          left: 13,
          right: 13,
          bottom: _media.padding.bottom + 77,
        ),
        itemCount: buildFuncs ? _cardsOrder.length + 1 : _cardsOrder.length,
        itemBuilder: (context, index) {
          if (index == 0 && buildFuncs) {
            return ServerFuncBtns(spi: widget.spi, iconSize: 19);
          }
          if (buildFuncs) index--;
          return _cardBuildMap[_cardsOrder[index]]?.call(si.status);
        },
      ),
    );
  }

  Widget _buildCPUView(ServerStatus ss) {
    final percent = ss.cpu.usedPercent(coreIdx: 0).toInt();
    final details = [
      _buildDetailPercent(ss.cpu.user, 'user'),
      UIs.width13,
      _buildDetailPercent(ss.cpu.idle, 'idle')
    ];
    if (ss.system == SystemType.linux) {
      details.addAll([
        UIs.width13,
        _buildDetailPercent(ss.cpu.sys, 'sys'),
        UIs.width13,
        _buildDetailPercent(ss.cpu.iowait, 'io'),
      ]);
    }

    return CardX(
      Padding(
        padding: UIs.roundRectCardPadding,
        child: Column(mainAxisAlignment: MainAxisAlignment.center, children: [
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              _buildAnimatedText(
                ValueKey(percent),
                '$percent%',
                UIs.textSize27,
              ),
              Row(
                children: details,
              )
            ],
          ),
          UIs.height13,
          _buildCPUProgress(ss.cpu)
        ]),
      ),
    );
  }

  Widget _buildDetailPercent(double percent, String timeType) {
    return Column(
      mainAxisSize: MainAxisSize.min,
      mainAxisAlignment: MainAxisAlignment.center,
      crossAxisAlignment: CrossAxisAlignment.end,
      children: [
        Text(
          '${percent.toStringAsFixed(1)}%',
          style: const TextStyle(fontSize: 13),
          textScaleFactor: _textFactor,
        ),
        Text(
          timeType,
          style: const TextStyle(fontSize: 10, color: Colors.grey),
          textScaleFactor: _textFactor,
        ),
      ],
    );
  }

  Widget _buildCPUProgress(Cpus cs) {
    final children = <Widget>[];
    for (var i = 0; i < cs.coresCount; i++) {
      if (i == 0) continue;
      children.add(
        Padding(
          padding: const EdgeInsets.all(2),
          child: _buildProgress(cs.usedPercent(coreIdx: i)),
        ),
      );
    }
    return Column(children: children);
  }

  Widget _buildProgress(double percent) {
    if (percent > 100) percent = 100;
    final percentWithinOne = percent / 100;
    return LinearProgressIndicator(
      value: percentWithinOne,
      minHeight: 7,
      backgroundColor: DynamicColors.progress.resolve(context),
      color: primaryColor,
    );
  }

  Widget _buildUpTimeAndSys(ServerStatus ss) {
    return CardX(
      Padding(
        padding: UIs.roundRectCardPadding,
        child: Row(
          mainAxisAlignment: MainAxisAlignment.spaceBetween,
          children: [
            Text(
              ss.sysVer,
              style: UIs.textSize11,
              textScaleFactor: _textFactor,
            ),
            Text(
              ss.uptime,
              style: UIs.textSize11,
              textScaleFactor: _textFactor,
            ),
          ],
        ),
      ),
    );
  }

  Widget _buildMemView(ServerStatus ss) {
    final free = ss.mem.free / ss.mem.total * 100;
    final avail = ss.mem.availPercent * 100;
    final used = ss.mem.usedPercent * 100;
    final usedStr = used.toStringAsFixed(0);

    return CardX(
      Padding(
        padding: UIs.roundRectCardPadding,
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.center,
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Row(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: [
                Row(
                  children: [
                    _buildAnimatedText(
                      ValueKey(usedStr),
                      '$usedStr%',
                      UIs.textSize27,
                    ),
                    UIs.width7,
                    Text(
                      'of ${(ss.mem.total * 1024).convertBytes}',
                      style: UIs.textSize13Grey,
                    )
                  ],
                ),
                Row(
                  children: [
                    _buildDetailPercent(free, 'free'),
                    UIs.width13,
                    _buildDetailPercent(avail, 'avail'),
                  ],
                ),
              ],
            ),
            UIs.height13,
            _buildProgress(used)
          ],
        ),
      ),
    );
  }

  Widget _buildSwapView(ServerStatus ss) {
    if (ss.swap.total == 0) return UIs.placeholder;
    final used = ss.swap.usedPercent * 100;
    final cached = ss.swap.cached / ss.swap.total * 100;
    return CardX(
      Padding(
        padding: UIs.roundRectCardPadding,
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.center,
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Row(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: [
                Row(
                  children: [
                    Text('${used.toStringAsFixed(0)}%', style: UIs.textSize27),
                    UIs.width7,
                    Text(
                      'of ${(ss.swap.total * 1024).convertBytes} ',
                      style: UIs.textSize13Grey,
                    )
                  ],
                ),
                _buildDetailPercent(cached, 'cached'),
              ],
            ),
            UIs.height13,
            _buildProgress(used)
          ],
        ),
      ),
    );
  }

  Widget _buildDiskView(ServerStatus ss) {
    final disks = ss.disk;
    disks.removeWhere((e) {
      for (final ingorePath in Stores.setting.diskIgnorePath.fetch()) {
        if (e.dev.startsWith(ingorePath)) return true;
      }
      return false;
    });
    final children =
        List.generate(disks.length, (idx) => _buildDiskItem(disks[idx], ss));
    return CardX(
      ExpandTile(
        title: Text(l10n.disk),
        leading: const Icon(Icons.storage, size: 17),
        initiallyExpanded: children.length <= 7,
        children: children,
      ),
    );
  }

  Widget _buildDiskItem(Disk disk, ServerStatus ss) {
    final (read, write) = ss.diskIO.getReadSpeed(disk.dev);
    final text = () {
      final use = '${disk.usedPercent}% of ${disk.size}';
      if (read == null || write == null) return use;
      return '$use\n↑ $read | ↓ $write';
    }();
    return ListTile(
      title: Text(
        disk.dev,
        style: UIs.textSize13Bold,
        textScaleFactor: _textFactor,
      ),
      contentPadding: const EdgeInsets.symmetric(vertical: 3, horizontal: 17),
      subtitle: Text(
        text,
        style: UIs.textSize11,
        textScaleFactor: _textFactor,
      ),
      trailing: SizedBox(
        height: 37,
        width: 37,
        child: CircularProgressIndicator(
          value: disk.usedPercent / 100,
          strokeWidth: 7,
          backgroundColor: DynamicColors.progress.resolve(context),
          valueColor: AlwaysStoppedAnimation(primaryColor),
        ),
      ),
    );
  }

  Widget _buildNetView(ServerStatus ss) {
    final ns = ss.netSpeed;
    final children = <Widget>[];
    if (ns.devices.isEmpty) {
      children.add(Center(
        child: Text(
          l10n.noInterface,
          style: const TextStyle(color: Colors.grey, fontSize: 13),
        ),
      ));
    } else {
      final devices = ns.devices;
      devices.sort(_netSortType.value.getSortFunc(ns));
      children.addAll(devices.map((e) => _buildNetSpeedItem(ns, e)));
    }
    return ValueBuilder(
      listenable: _netSortType,
      build: () {
        return CardX(
          ExpandTile(
            title: Row(
              children: [
                Text(l10n.net),
                UIs.width13,
                InkWell(
                  onTap: () {
                    _netSortType.value = _netSortType.value.next;
                  },
                  child: Row(
                    children: [
                      const Icon(Icons.sort, size: 17),
                      UIs.width7,
                      Text(
                        _netSortType.value.name,
                        style: UIs.textSize11Grey,
                      ),
                    ],
                  ),
                )
              ],
            ),
            leading: const Icon(Icons.device_hub, size: 17),
            initiallyExpanded: children.length <= 7,
            children: children,
          ),
        );
      },
    );
  }

  Widget _buildNetSpeedItem(NetSpeed ns, String device) {
    return ListTile(
      title: Text(
        device,
        style: UIs.textSize13Bold,
        textScaleFactor: _textFactor,
        maxLines: 1,
        overflow: TextOverflow.ellipsis,
      ),
      subtitle: Text(
        '${ns.sizeIn(device: device)} | ${ns.sizeOut(device: device)}',
        style: UIs.textSize11,
        textScaleFactor: _textFactor,
      ),
      trailing: SizedBox(
        width: 170,
        child: Text(
          '↑ ${ns.speedOut(device: device)}\n↓ ${ns.speedIn(device: device)}',
          textAlign: TextAlign.end,
        ),
      ),
    );
  }

  Widget _buildTemperature(ServerStatus ss) {
    if (ss.temps.isEmpty) {
      return UIs.placeholder;
    }
    return CardX(
      ExpandTile(
        title: Text(l10n.temperature),
        leading: const Icon(Icons.ac_unit, size: 17),
        initiallyExpanded: ss.temps.devices.length <= 7,
        children: ss.temps.devices
            .map((key) => _buildTemperatureItem(key, ss.temps.get(key)))
            .toList(),
      ),
    );
  }

  Widget _buildTemperatureItem(String key, double? val) {
    return ListTile(
      title: Text(key, style: UIs.textSize13Bold),
      trailing: Text('${val?.toStringAsFixed(1)}°C'),
    );
  }

  Widget _buildAnimatedText(Key key, String text, TextStyle style) {
    return AnimatedSwitcher(
      duration: const Duration(milliseconds: 277),
      child: Text(
        key: key,
        text,
        style: style,
        textScaleFactor: _textFactor,
      ),
      transitionBuilder: (child, animation) => FadeTransition(
        opacity: animation,
        child: child,
      ),
    );
  }
}

enum _NetSortType {
  device,
  trans,
  recv,
  ;

  bool get isDevice => this == _NetSortType.device;
  bool get isIn => this == _NetSortType.recv;
  bool get isOut => this == _NetSortType.trans;

  _NetSortType get next {
    switch (this) {
      case device:
        return trans;
      case _NetSortType.trans:
        return recv;
      case recv:
        return device;
    }
  }

  int Function(String, String) getSortFunc(NetSpeed ns) {
    switch (this) {
      case _NetSortType.device:
        return (b, a) => a.compareTo(b);
      case _NetSortType.recv:
        return (b, a) => ns
            .speedInBytes(ns.deviceIdx(a))
            .compareTo(ns.speedInBytes(ns.deviceIdx(b)));
      case _NetSortType.trans:
        return (b, a) => ns
            .speedOutBytes(ns.deviceIdx(a))
            .compareTo(ns.speedOutBytes(ns.deviceIdx(b)));
    }
  }
}