uaestats_fe/lib/presentation/components/dialogs.dart

import 'dart:async';

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';

extension Dialogs on BuildContext {
  Future<BuildContext> _pushLoaderDialog() {
    final ctxWaiter = Completer<BuildContext>();
    showDialog(
      barrierDismissible: false,
      context: this,
      builder: (loaderContext) {
        if (!ctxWaiter.isCompleted) ctxWaiter.complete(loaderContext);
        return Dialog(
          child: LinearProgressIndicator(),
        );
      },
    );
    return ctxWaiter.future;
  }

  /// For an async or other function, shows a
  /// loading dialog as the computation processes.
  ///
  /// If successful, the loading dialog is dismissed
  /// and the value is returned.
  ///
  /// If there is an error, an error dialog replaces
  /// the loading dialog. Upon dismissal of this
  /// error dialog, the error is rethrown.
  ///
  /// A generic error dialog is shown if
  /// [errorDialogBuilder] is null, or if the method
  /// returns null.
  ///
  /// If [errorDialogBuilder] is not given and [showLogBtn]
  /// is, the errorDialog will have a 'Show logs' button
  /// that shows logs in a new dialog when pressed.
  ///
  /// If [errorDialogBuilder] is provided, an
  /// [showLogBtn] is also true exception is thrown;
  Future<T> loaderWithErrorDialog<T>(
    FutureOr<T> Function() computation, {
    Future<void> Function(
      Object error, [
      StackTrace stackTrace,
    ])? errorDialogBuilder,
  }) async {
    final loaderContext = await _pushLoaderDialog();
    late final T value;
    try {
      value = await computation();
    } catch (error, stackTrace) {
      Future<bool> attemptParameterErrorBuilder() async {
        if (errorDialogBuilder == null) return false;
        await errorDialogBuilder(error, stackTrace);
        return true;
      }

      Future<void> showGenericOrUserDefinedErrorDialog() async {
        final didPEBSucceed = await attemptParameterErrorBuilder();
        if (didPEBSucceed) return;
        if (kDebugMode) {
          return simpleDialog(
            error: error,
            stackTrace: stackTrace,
          );
        }
        return simpleDialog();
      }

      if (!loaderContext.mounted) rethrow;
      Navigator.of(
        loaderContext,
        rootNavigator: true,
      ).pop();
      await showGenericOrUserDefinedErrorDialog();
      rethrow;
    }
    if (loaderContext.mounted) {
      Navigator.of(
        loaderContext,
        rootNavigator: true,
      ).pop();
    }
    return value;
  }

  Future<void> simpleDialog({
    String title = 'An error occurred',
    String content = 'Please try again later',
    Widget? extraAction,
    dynamic error,
    StackTrace? stackTrace,
  }) =>
      showDialog(
        context: this,
        barrierDismissible: false,
        builder: (context) {
          final contentText = Text(content);
          return AlertDialog(
            title: Text(title,
                style: TextStyle(
                    color: Color(0xFF898C81), fontWeight: FontWeight.w700)),
            content: content.length > 300
                ? SingleChildScrollView(
                    child: Text(content,
                        style: TextStyle(color: Color(0xFF898C81))),
                  )
                : Text(
                    content,
                    style: TextStyle(
                        color: Color(0xFF898C81)), // Set content text color
                  ),
            actions: [
              TextButton(
                onPressed: Navigator.of(
                  this,
                  rootNavigator: true,
                ).pop,
                style: TextButton.styleFrom(
                  // backgroundColor: Color(0xFFAA8E83), // Background color
                  backgroundColor: Color(0xFFB68A34), // Background color
                  foregroundColor: Colors.white, // Font (text) color
                  side: BorderSide(
                      // color: Color(0xFF92722A)), // Border outline color
                      color: Color(0xFFB68A34)), // Border outline color
                  shape: RoundedRectangleBorder(
                    borderRadius:
                        BorderRadius.circular(8), // Optional: Rounded corners
                  ),
                  padding: EdgeInsets.symmetric(
                      horizontal: 16, vertical: 12), // Optional: Padding
                ),
                child: const Text('Return'),
              ),
              if (extraAction != null) extraAction,
              if (error != null)
                ElevatedButton(
                  onPressed: () {
                    Navigator.of(context, rootNavigator: true).pop();
                    simpleDialog(
                      title: 'Logs',
                      content: '$error\n\nStackTrace: $stackTrace',
                    );
                  },
                  child: const Text('Show Logs'),
                ),
            ],
          );
        },
      );

  Future<bool?> confirmationDialog(
    String titleText,
    String contentText, {
    String cancelText = 'Cancel',
    String confirmText = 'Confirm',
  }) =>
      showDialog<bool>(
        context: this,
        barrierDismissible: false,
        builder: (context) => AlertDialog(
          title: Text(titleText),
          content: Text(contentText),
          actions: [
            TextButton(
              onPressed: () => Navigator.of(
                this,
                rootNavigator: true,
              ).pop(false),
              child: Text(cancelText),
            ),
            ElevatedButton(
              onPressed: () => Navigator.of(
                this,
                rootNavigator: true,
              ).pop(true),
              child: Text(
                confirmText,
              ),
            ),
          ],
        ),
      );
}