import 'package:flutter/material.dart';
import 'package:flutter/widgets.dart';
import 'package:libacflutter/Constants.dart';
import 'package:timetrack/consts.dart';
import 'package:timetrack/data.dart';

class WebMain extends StatefulWidget {
  @override
  State<StatefulWidget> createState() {
    return _WebMain();
  }
}

class _WebMain extends State<WebMain> {
  TextEditingController sessionIDController = TextEditingController();

  @override
  void didChangeDependencies() {
    sessionIDController.text = SessionData.LastSessionID;
    super.didChangeDependencies();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("Time Tracker"),
        backgroundColor: LibACFlutterConstants.TITLEBAR_COLOR,
      ),
      drawer: Drawer(
        elevation: 8,
        child: SingleChildScrollView(
          child: Column(
            children: [
              DrawerHeader(
                child: Column(
                  children: [
                    Text("Time Tracker"),
                    Text("Created by Tara Piccari"),
                    Text("Copyright 2025 - Present"),
                    Text("Version: ${TTConsts.VERSION}"),
                  ],
                ),
              ),
              if (SessionData.IsReadOnly)
                ListTile(
                  title: Text("Trip Map"),
                  leading: Icon(Icons.map),
                  subtitle: Text(
                    "View a map of the route\n(NOTE: This is not live, and reflects the current state as of the time the map is opened.)",
                  ),
                  onTap: () async {
                    await Navigator.pushNamed(context, "/map");
                  },
                ),
              if (SessionData.IsReadOnly)
                ListTile(
                  title: Text("Work Data"),
                  subtitle: Text("View work data"),
                  leading: Icon(Icons.work_history),
                  onTap: () async {
                    // Open up the work data viewer and editor.
                    // Edit will be disabled for web or read only mode.
                    await Navigator.pushNamed(context, "/work");
                    setState(() {});
                  },
                ),
            ],
          ),
        ),
      ),
      body: Padding(
        padding: EdgeInsets.all(8),
        child: SingleChildScrollView(
          child: Column(
            children: [
              // Start doing magic!
              if (SessionData.DisplayError.isNotEmpty)
                Text(SessionData.DisplayError, style: TextStyle(fontSize: 18)),
              // Check what widgets need to be displayed.
              if (SessionData.IsReadOnly) GetReadOnlyWidgets(),
              if (!SessionData.IsReadOnly) GetLoadWidgets(),
            ],
          ),
        ),
      ),
    );
  }

  Widget GetReadOnlyWidgets() {
    return Column(
      children: [
        Text(
          "Use the top left menu to show the various pages for the data viewer.",
        ),
        ElevatedButton(
          onPressed: () async {
            SessionData.IsReadOnly = false;
            SessionData.Trips = [];
            SessionData.positions = [];
            SessionData.DisplayError = "";
          },
          child: Text("Close Session"),
        ),
      ],
    );
  }

  Widget GetLoadWidgets() {
    return Column(
      children: [
        // Present a text box for the session ID, and a button for loading.
        ListTile(title: Text("Session ID")),
        TextField(
          controller: sessionIDController,
          decoration: InputDecoration(border: OutlineInputBorder()),
        ),
        ElevatedButton(
          onPressed: () async {
            await SessionData.DownloadData();
            setState(() {});
          },
          child: Text("Load Session", style: TextStyle(fontSize: 18)),
        ),
      ],
    );
  }
}