import 'package:flutter/material.dart';

import '../structs/mod.dart';
import '../structs/settings.dart';

class ModManager extends StatefulWidget {
  Settings settings;
  ModManager({super.key, required this.settings});

  @override
  ModManagerState createState() => ModManagerState(settings: settings);
}

class ModManagerState extends State<ModManager> {
  Settings settings;
  ModManagerState({required this.settings});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("Conan Exiles Server Manager - Mod Manager"),
        backgroundColor: Color.fromARGB(255, 100, 0, 0),
      ),
      body: ReorderableListView.builder(
        onReorder: (oldIndex, newIndex) {
          if (oldIndex < newIndex) {
            // From top to Bottom
            int end = newIndex - 1;
            Mod item = settings.inst!.mods[oldIndex];
            int i = 0;
            int local = oldIndex;
            do {
              settings.inst!.mods[local] = settings.inst!.mods[++local];
              i++;
            } while (i < end - oldIndex);
            settings.inst!.mods[end] = item;
          } else if (oldIndex > newIndex) {
            //From bottom to top
            Mod item = settings.inst!.mods[oldIndex];
            for (int i = oldIndex; i > newIndex; i--) {
              settings.inst!.mods[i] = settings.inst!.mods[i - 1];
            }
            settings.inst!.mods[newIndex] = item;
          }
          setState(() {
            settings.Write();
          });
        },
        itemBuilder: (ctx, idx) {
          Mod mod = settings.inst!.mods[idx];
          return Padding(
            key: Key(mod.mod_instance_id()),
            padding: EdgeInsets.all(12),
            child: ListTile(
              title: Text(mod.mod_name),
              subtitle: Text("ID: ${mod.mod_id}\nLoad Order: ${idx}"),
              onTap: () async {
                final reply = await Navigator.pushNamed(
                    context, "/server/mods/edit",
                    arguments: Mod(
                        mod_id: mod.mod_id,
                        mod_name: mod.mod_name,
                        mod_pak: mod.mod_pak,
                        mod_hash: mod.mod_hash,
                        newMod: false));

                if (reply != null) {
                  if (reply is bool) {
                    setState(() {
                      settings.inst!.mods.removeAt(idx);
                    });
                  }
                  setState(() {
                    settings.inst!.mods[idx] = reply as Mod;
                  });
                }
              },
            ),
          );
        },
        itemCount: settings.inst!.mods.length,
      ),
      floatingActionButton: ElevatedButton(
        child: Icon(Icons.add),
        onPressed: () async {
          // Open new mod info screen
          final reply = await Navigator.pushNamed(context, "/server/mods/edit",
              arguments: Mod(newMod: true));

          if (reply != null && reply is! bool) {
            Mod mod = reply as Mod;
            setState(() {
              settings.inst!.mods.add(mod);
            });
          }
        },
      ),
    );
  }
}

class ModPage extends StatelessWidget {
  bool initDone = false;
  TextEditingController id = TextEditingController();
  TextEditingController name = TextEditingController();
  String instance = "";
  bool isNewMod = false;
  bool willDelete = false;
  String pak = "Not initialized";
  String hash = "";

  @override
  Widget build(BuildContext context) {
    final args = ModalRoute.of(context)!.settings.arguments as Mod?;

    if (!initDone) {
      initDone = true;
      if (args != null) {
        id.text = args.mod_id.toString();
        name.text = args.mod_name;
        isNewMod = args.newMod;
        instance = args.mod_instance_id();
        pak = args.mod_pak;
        hash = args.mod_hash;
      }
    }

    return Scaffold(
      appBar: AppBar(
        title: Text("Mod Editor"),
        backgroundColor: Color.fromARGB(255, 100, 0, 0),
      ),
      floatingActionButton: ElevatedButton(
        child: Text("Save"),
        onPressed: () {
          int idVal = 0;
          try {
            idVal = int.parse(id.text);
          } catch (E) {}

          if (willDelete) {
            Navigator.pop(context, true);
          } else {
            Navigator.pop(context,
                Mod(mod_id: idVal, mod_name: name.text, newMod: false));
          }
        },
      ),
      body: SingleChildScrollView(
        padding: const EdgeInsets.all(16),
        child: Column(children: [
          Row(
            children: [
              SizedBox(
                  width: 150,
                  child: ListTile(
                    leading: Icon(Icons.abc_rounded),
                    title: Text("Mod Name"),
                  )),
              Expanded(
                child: TextField(
                    controller: name,
                    decoration: InputDecoration(
                        border: OutlineInputBorder(
                            borderRadius: BorderRadius.circular(4)))),
              )
            ],
          ),
          SizedBox(
            height: 16,
          ),
          Row(
            children: [
              SizedBox(
                width: 150,
                child: ListTile(
                    leading: Icon(Icons.perm_identity), title: Text("Mod ID")),
              ),
              Expanded(
                  child: TextField(
                controller: id,
                keyboardType: TextInputType.number,
                decoration: InputDecoration(
                    border: OutlineInputBorder(
                        borderRadius: BorderRadius.circular(4))),
              ))
            ],
          ),
          SizedBox(
            height: 16,
          ),
          ListTile(
            title: Text("Mod Instance ID"),
            subtitle: Text(instance),
          ),
          ListTile(
            title: Text("Mod Pak File: $pak"),
            subtitle: Text("Mod pak file name as detected during downloading"),
          ),
          ListTile(
            title: Text("Mod Hash"),
            subtitle: Text(hash),
          ),
          if (!isNewMod)
            ElevatedButton(
                onPressed: () {
                  willDelete = true;
                  Navigator.pop(context);
                },
                child: Row(
                  children: [
                    Icon(Icons.delete),
                    SizedBox(
                      width: 4,
                    ),
                    Text("Remove Mod")
                  ],
                ))
        ]),
      ),
    );
  }
}