opt.: refactor AppShellFunc

lib/data/model/app/shell_func.dart

@@ -1,22 +1,46 @@
 import '../../res/server_cmd.dart';
 
-class AppShellFunc {
-  final String name;
-  final String cmd;
-  final String flag;
+const _cmdDivider = '\necho $seperator\n';
 
-  const AppShellFunc(this.name, this.cmd, this.flag);
+enum AppShellFuncType {
+  status,
+  docker;
 
-  String get exec => 'sh $shellPath -$flag';
+  String get flag {
+    switch (this) {
+      case AppShellFuncType.status:
+        return 's';
+      case AppShellFuncType.docker:
+        return 'd';
+    }
   }
 
-typedef AppShellFuncs = List<AppShellFunc>;
+  String get exec => 'sh $shellPath -$flag';
 
-extension AppShellFuncsExt on AppShellFuncs {
-  String get generate {
+  String get name {
+    switch (this) {
+      case AppShellFuncType.status:
+        return 'status';
+      case AppShellFuncType.docker:
+        /// `dockeR` -> avoid conflict with `docker` command
+        /// 以防止循环递归
+        return 'dockeR';
+    }
+  }
+
+  String get cmd {
+    switch (this) {
+      case AppShellFuncType.status:
+        return statusCmds.join(_cmdDivider);
+      case AppShellFuncType.docker:
+        return dockerCmds.join(_cmdDivider);
+    }
+  }
+
+  static String get shellScript {
     final sb = StringBuffer();
     // Write each func
-    for (final func in this) {
+    for (final func in values) {
       sb.write('''
 ${func.name}() {
 ${func.cmd}
@@ -27,7 +51,7 @@ ${func.cmd}
 
     // Write switch case
     sb.write('case \$1 in\n');
-    for (final func in this) {
+    for (final func in values) {
       sb.write('''
   '-${func.flag}')
     ${func.name}
@@ -38,13 +62,43 @@ ${func.cmd}
   *)
     echo "Invalid argument \$1"
     ;;
-esac
-''');
+esac''');
     return sb.toString();
   }
 }
 
-// enum AppShellFuncType {
-//   status,
-//   docker;
-// }
+abstract class _CmdType {
+  /// Find out the required segment from [segments]
+  String find(List<String> segments);
+}
+
+enum StatusCmdType implements _CmdType {
+  net,
+  sys,
+  cpu,
+  uptime,
+  conn,
+  disk,
+  mem,
+  tempType,
+  tempVal,
+  host,
+  sysRhel;
+
+  @override
+  String find(List<String> segments) {
+    return segments[index];
+  }
+}
+
+enum DockerCmdType implements _CmdType {
+  version,
+  ps,
+  stats,
+  images;
+
+  @override
+  String find(List<String> segments) {
+    return segments[index];
+  }
+}

lib/data/model/server/server_status_update_req.dart

@@ -1,4 +1,4 @@
-import '../../res/server_cmd.dart';
+import '../app/shell_func.dart';
 import 'cpu.dart';
 import 'disk.dart';
 import 'memory.dart';
@@ -13,50 +13,43 @@ class ServerStatusUpdateReq {
   const ServerStatusUpdateReq(this.ss, this.segments);
 }
 
-extension _SegmentsExt on List<String> {
-  String at(CmdType t) {
-    final index = t.index;
-    if (index >= length) return '';
-    return this[index];
-  }
-}
-
 Future<ServerStatus> getStatus(ServerStatusUpdateReq req) async {
-  final net = parseNetSpeed(req.segments.at(CmdType.net));
+  final segments = req.segments;
+  final net = parseNetSpeed(StatusCmdType.net.find(segments));
   req.ss.netSpeed.update(net);
 
   final sys = _parseSysVer(
-    req.segments.at(CmdType.sys),
-    req.segments.at(CmdType.host),
-    req.segments.at(CmdType.sysRhel),
+    StatusCmdType.sys.find(segments),
+    StatusCmdType.host.find(segments),
+    StatusCmdType.sysRhel.find(segments),
   );
   if (sys != null) {
     req.ss.sysVer = sys;
   }
 
-  final cpus = parseCPU(req.segments.at(CmdType.cpu));
+  final cpus = parseCPU(StatusCmdType.cpu.find(segments));
   req.ss.cpu.update(cpus);
 
   req.ss.temps.parse(
-    req.segments.at(CmdType.tempType),
-    req.segments.at(CmdType.tempVal),
+    StatusCmdType.tempType.find(segments),
+    StatusCmdType.tempVal.find(segments),
   );
 
-  final tcp = parseConn(req.segments.at(CmdType.conn));
+  final tcp = parseConn(StatusCmdType.conn.find(segments));
   if (tcp != null) {
     req.ss.tcp = tcp;
   }
 
-  req.ss.disk = parseDisk(req.segments.at(CmdType.disk));
+  req.ss.disk = parseDisk(StatusCmdType.disk.find(segments));
 
-  req.ss.mem = parseMem(req.segments.at(CmdType.mem));
+  req.ss.mem = parseMem(StatusCmdType.mem.find(segments));
 
-  final uptime = _parseUpTime(req.segments.at(CmdType.uptime));
+  final uptime = _parseUpTime(StatusCmdType.uptime.find(segments));
   if (uptime != null) {
     req.ss.uptime = uptime;
   }
 
-  req.ss.swap = parseSwap(req.segments.at(CmdType.mem));
+  req.ss.swap = parseSwap(StatusCmdType.mem.find(segments));
   return req.ss;
 }
 

lib/data/provider/docker.dart

@@ -6,6 +6,7 @@ import 'package:logging/logging.dart';
 import 'package:toolbox/core/extension/ssh_client.dart';
 import 'package:toolbox/core/extension/stringx.dart';
 import 'package:toolbox/core/provider_base.dart';
+import 'package:toolbox/data/model/app/shell_func.dart';
 import 'package:toolbox/data/model/docker/image.dart';
 import 'package:toolbox/data/model/docker/ps.dart';
 import 'package:toolbox/data/model/app/error.dart';
@@ -55,7 +56,7 @@ class DockerProvider extends BusyProvider {
 
     var raw = '';
     await client!.exec(
-      shellFuncDocker.exec,
+      AppShellFuncType.docker.exec,
       onStderr: _onPwd,
       onStdout: (data, _) => raw = '$raw$data',
     );
@@ -75,7 +76,7 @@ class DockerProvider extends BusyProvider {
     }
 
     // Parse docker version
-    final verRaw = segments[0];
+    final verRaw = DockerCmdType.version.find(segments);
     try {
       version = _versionReg.firstMatch(verRaw)?.group(2);
       edition = _editionReg.firstMatch(verRaw)?.group(2);
@@ -88,7 +89,7 @@ class DockerProvider extends BusyProvider {
     }
 
     // Parse docker ps
-    final psRaw = segments[1];
+    final psRaw = DockerCmdType.ps.find(segments);
     try {
       final lines = psRaw.split('\n');
       lines.removeWhere((element) => element.isEmpty);
@@ -105,7 +106,7 @@ class DockerProvider extends BusyProvider {
     }
 
     // Parse docker images
-    final imageRaw = segments[3];
+    final imageRaw = DockerCmdType.images.find(segments);
     try {
       final imageLines = imageRaw.split('\n');
       imageLines.removeWhere((element) => element.isEmpty);
@@ -122,7 +123,7 @@ class DockerProvider extends BusyProvider {
     }
 
     // Parse docker stats
-    final statsRaw = segments[2];
+    final statsRaw = DockerCmdType.stats.find(segments);
     try {
       final statsLines = statsRaw.split('\n');
       statsLines.removeWhere((element) => element.isEmpty);

lib/data/provider/server.dart

@@ -2,6 +2,7 @@ import 'dart:async';
 
 import 'package:flutter/foundation.dart';
 import 'package:logging/logging.dart';
+import 'package:toolbox/data/model/app/shell_func.dart';
 
 import '../../core/extension/order.dart';
 import '../../core/extension/uint8list.dart';
@@ -245,9 +246,9 @@ class ServerProvider extends BusyProvider {
 
       if (s.client == null) return;
       // run script to get server status
-      raw = await s.client!.run(shellFuncStatus.exec).string;
+      raw = await s.client!.run(AppShellFuncType.status.exec).string;
       segments = raw.split(seperator).map((e) => e.trim()).toList();
-      if (raw.isEmpty || segments.length != CmdType.values.length) {
+      if (raw.isEmpty || segments.length != StatusCmdType.values.length) {
         s.state = ServerState.failed;
         if (s.status.failedInfo?.isEmpty ?? true) {
           s.status.failedInfo = 'Seperate segments failed, raw:\n$raw';

lib/data/res/server_cmd.dart

@@ -7,21 +7,7 @@ const shellPath = '$serverBoxDir/mobile_app.sh';
 
 const echoPWD = 'echo \$PWD';
 
-enum CmdType {
-  net,
-  sys,
-  cpu,
-  uptime,
-  conn,
-  disk,
-  mem,
-  tempType,
-  tempVal,
-  host,
-  sysRhel,
-}
-
-const _cmdList = [
+const statusCmds = [
   'cat /proc/net/dev && date +%s',
   'cat /etc/os-release | grep PRETTY_NAME',
   'cat /proc/stat | grep cpu',
@@ -35,12 +21,6 @@ const _cmdList = [
   'cat /etc/redhat-release',
 ];
 
-final shellFuncStatus = AppShellFunc(
-  'status',
-  _cmdList.join('\necho $seperator\n'),
-  's',
-);
-
 const dockerCmds = [
   'docker version',
   'docker ps -a',
@@ -48,26 +28,13 @@ const dockerCmds = [
   'docker image ls',
 ];
 
-final shellFuncDocker = AppShellFunc(
-  // `dockeR` -> avoid conflict with `docker` command
-  // 以防止循环递归
-  'dockeR',
-  dockerCmds.join('\necho $seperator\n'),
-  'd',
-);
-
-final _generated = [
-  shellFuncStatus,
-  shellFuncDocker,
-].generate;
-
 final shellCmd = """
 # Script for app `${BuildData.name} v1.0.${BuildData.build}`
 # Delete this file while app is running will cause app crash
 
 export LANG=en_US.utf-8
 
-$_generated
+${AppShellFuncType.shellScript}
 """;
 
 final installShellCmd = "mkdir -p $serverBoxDir && "

lib/view/page/docker.dart

@@ -456,6 +456,8 @@ class _DockerManagePageState extends State<DockerManagePage> {
         subtitle: Text(_buildSubtitle(_docker.items!), style: grey),
       ),
     );
+    // Bottom padding
+    items.add(height13);
     return Column(
       mainAxisSize: MainAxisSize.min,
       children: items,