import 'package:dio/dio.dart';
import 'package:flutter/material.dart';
import 'package:flutter_fast_forms/flutter_fast_forms.dart';
import 'package:get/get.dart';
import 'package:styled_widget/styled_widget.dart';
import 'package:tuuli_app/api_controller.dart';
import 'package:tuuli_app/models/table_column_definition.dart';

const typeToNameMatcher = {
  SerialPrimaryColumnDefinition: "Serial ID",
  TextColumnDefinition: "Текст",
  BooleanColumnDefinition: "Логическое значение",
  TimestampColumnDefinition: "Дата/Время",
  DoubleColumnDefinition: "Число с плавающей точкой",
  IntegerColumnDefinition: "Целое число",
  UserRefColumnDefinition: "Ссылка на пользователя",
  AssetRefColumnDefinition: "Ссылка на ресурс",
};

class CreateTableController extends GetxController {
  final _tableName = "".obs;
  String get tableName => _tableName.value;
  set tableName(String value) => _tableName.value = value;

  final _columnsDefinition = <TableColumnDefinition>[].obs;
  List<TableColumnDefinition> get columnsDefinition => _columnsDefinition;

  Future<void> createTable() async {
    try {
      final resp = await ApiController.to.apiClient.createTable(
        tableName: tableName,
        columnsDefinition:
            _columnsDefinition.map((e) => e.def).toList(growable: false),
      );

      final respData = resp.data;
      if (respData == null) {
        throw Exception("В ответе нет данных");
      }

      Get.back(result: true);
    } on DioError catch (e) {
      final respData = e.response?.data;
      if (respData != null) {
        Get.snackbar(
          "Ошибка обновления доступа к таблице",
          "${respData['error']}",
        );
      } else {
        Get.snackbar(
          "Ошибка обновления доступа к таблице",
          "$e",
        );
      }
    } catch (e) {
      Get.snackbar(
        "Ошибка обновления доступа к таблице",
        "$e",
      );
    }
  }

  Future<void> createNewColumn() async {
    final columnName = "".obs;
    final columnType = "".obs;
    final columnIsUnique = false.obs;

    final confirm = await Get.dialog<bool>(
      AlertDialog(
        title: const Text("Создать новую колонку"),
        content: Wrap(
          runSpacing: 16,
          children: [
            FastTextField(
              name: "ColumnName",
              decoration: const InputDecoration(
                labelText: "Название",
                border: OutlineInputBorder(),
              ),
              initialValue: columnName.value,
              onChanged: (value) => columnName.value = value ?? "",
            ),
            FastDropdown(
              name: "ColumnTypes",
              hint: const Text("Тип"),
              items: typeToNameMatcher.keys.toList(growable: false),
              itemsBuilder: (items, field) => items
                  .map(
                    (e) => DropdownMenuItem(
                      value: e,
                      child: Text(typeToNameMatcher[e]!),
                    ),
                  )
                  .toList(),
              onChanged: (value) =>
                  columnType.value = typeToNameMatcher[value] ?? "",
            ),
            FastCheckbox(
              name: "ColumnIsUnique",
              titleText: "Уникальное значение?",
              initialValue: false,
              onChanged: (value) => columnIsUnique.value = value!,
            ),
          ],
        ),
        actions: [
          TextButton(
            onPressed: () {
              Get.back(result: false);
            },
            child: const Text("Отменить"),
          ),
          TextButton(
            onPressed: () {
              Get.back(result: true);
            },
            child: const Text("Создать"),
          ),
        ],
      ),
    );

    if (confirm != true) return;

    TableColumnDefinition? ct;
    switch (columnType.value) {
      case "Serial ID":
        ct = SerialPrimaryColumnDefinition(
          columnName: columnName.value,
        );
        break;
      case "Текст":
        ct = TextColumnDefinition(
          columnName: columnName.value,
          isUnique: columnIsUnique.value,
        );
        break;
      case "Логическое значение":
        ct = BooleanColumnDefinition(
          columnName: columnName.value,
          isUnique: columnIsUnique.value,
        );
        break;
      case "Дата/Время":
        ct = TimestampColumnDefinition(
          columnName: columnName.value,
          isUnique: columnIsUnique.value,
        );
        break;
      case "Число с плавающей точкой":
        ct = DoubleColumnDefinition(
          columnName: columnName.value,
          isUnique: columnIsUnique.value,
        );
        break;
      case "Целое число":
        ct = IntegerColumnDefinition(
          columnName: columnName.value,
          isUnique: columnIsUnique.value,
        );
        break;
      case "Ссылка на пользователя":
        ct = UserRefColumnDefinition(
          columnName: columnName.value,
        );
        break;
      case "Ссылка на ресурс":
        ct = AssetRefColumnDefinition(
          columnName: columnName.value,
        );
        break;
    }
    if (ct == null) return;
    _columnsDefinition.add(ct);
  }

  void removeColumn(TableColumnDefinition e) {
    _columnsDefinition.remove(e);
  }
}

class CreateTableDialog extends GetView<CreateTableController> {
  const CreateTableDialog({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return AlertDialog(
      title: const Text("Создать новую таблицу"),
      content: Column(
        children: [
          TextField(
            decoration: const InputDecoration(
              labelText: "Название",
              border: OutlineInputBorder(),
            ),
            onChanged: (value) => controller.tableName = value,
          ),
          const Divider(),
          Obx(
            () => ListView(
              children: controller.columnsDefinition
                  .map(
                    (e) => ListTile(
                      title: Text(e.columnName),
                      subtitle: Text(e.def),
                      trailing: IconButton(
                        onPressed: () => controller.removeColumn(e),
                        icon: const Icon(Icons.delete),
                      ),
                    ),
                  )
                  .toList(),
            ).expanded(),
          ),
          const Divider(),
          [
            ElevatedButton(
              onPressed: () => controller.createNewColumn(),
              child: const Text("Создать колонку"),
            ).expanded()
          ].toRow(),
        ],
      ).constrained(width: Get.width * 0.9, height: Get.height * 0.9),
      actions: [
        TextButton(
          onPressed: () {
            Get.back();
          },
          child: const Text("Закрыть"),
        ),
        Obx(
          () => TextButton(
            onPressed: controller.columnsDefinition.isEmpty
                ? null
                : () => controller.createTable(),
            child: const Text("Создать"),
          ),
        ),
      ],
    );
  }

  static Future<bool?> show() async {
    Get.lazyPut<CreateTableController>(() => CreateTableController());

    return Get.dialog<bool>(
      const CreateTableDialog(),
      barrierDismissible: false,
    );
  }
}