// Flutter imports:

import 'package:flutter/material.dart';

import 'package:intl/intl.dart';

import 'package:fluffychat/l10n/l10n.dart';
import 'package:fluffychat/pangea/subscription/pages/change_subscription.dart';
import 'package:fluffychat/pangea/subscription/pages/settings_subscription.dart';
import 'package:fluffychat/pangea/subscription/repo/subscription_management_repo.dart';
import 'package:fluffychat/widgets/layouts/max_width_body.dart';

class SettingsSubscriptionView extends StatelessWidget {
  final SubscriptionManagementController controller;
  const SettingsSubscriptionView(this.controller, {super.key});

  @override
  Widget build(BuildContext context) {
    final List<Widget> managementButtons = [
      if (controller.currentSubscriptionAvailable)
        ListTile(
          title: Text(L10n.of(context).currentSubscription),
          subtitle: Text(controller.currentSubscriptionTitle),
          trailing: Text(controller.currentSubscriptionPrice),
        ),
      Column(
        children: [
          ListTile(
            title: Text(
              controller.subscriptionEndDate == null
                  ? L10n.of(context).cancelSubscription
                  : L10n.of(context).enabledRenewal,
            ),
            enabled: controller.showManagementOptions,
            onTap: controller.onClickCancelSubscription,
            trailing: Icon(
              controller.subscriptionEndDate == null
                  ? Icons.cancel_outlined
                  : Icons.refresh_outlined,
            ),
          ),
          const Divider(height: 1),
          ListTile(
            title: Text(L10n.of(context).paymentMethod),
            trailing: const Icon(Icons.credit_card),
            onTap: () => controller.launchMangementUrl(
              ManagementOption.paymentMethod,
            ),
            enabled: controller.showManagementOptions,
          ),
          ListTile(
            title: Text(L10n.of(context).paymentHistory),
            trailing: const Icon(Icons.keyboard_arrow_right_outlined),
            onTap: () => controller.launchMangementUrl(
              ManagementOption.history,
            ),
            enabled: controller.showManagementOptions,
          ),
          if (controller.expirationDate != null) ...[
            const Divider(height: 1),
            ListTile(
              title: Text(
                controller.subscriptionEndDate != null
                    ? L10n.of(context).subscriptionEndsOn
                    : L10n.of(context).subscriptionRenewsOn,
              ),
              subtitle: Text(
                DateFormat.yMMMMd().format(
                  controller.expirationDate!.toLocal(),
                ),
              ),
            ),
            if (SubscriptionManagementRepo.getClickedCancelSubscription())
              Padding(
                padding: const EdgeInsets.all(16.0),
                child: Row(
                  spacing: 8.0,
                  mainAxisSize: MainAxisSize.min,
                  children: [
                    const Icon(
                      Icons.info_outline,
                      size: 20,
                    ),
                    Flexible(
                      child: Text(
                        L10n.of(context).waitForSubscriptionChanges,
                        textAlign: TextAlign.center,
                        style: const TextStyle(fontStyle: FontStyle.italic),
                      ),
                    ),
                  ],
                ),
              ),
          ],
        ],
      ),
    ];

    final isSubscribed = controller.subscriptionController.isSubscribed;

    return Scaffold(
      appBar: AppBar(
        centerTitle: true,
        title: Text(
          L10n.of(context).subscriptionManagement,
        ),
      ),
      body: ListTileTheme(
        iconColor: Theme.of(context).textTheme.bodyLarge!.color,
        child: MaxWidthBody(
          child: Column(
            children: [
              if (isSubscribed == null)
                const Center(child: CircularProgressIndicator.adaptive())
              else if (isSubscribed && !controller.showManagementOptions)
                ManagementNotAvailableWarning(
                  controller: controller,
                )
              else if (isSubscribed && controller.showManagementOptions)
                ...managementButtons
              else
                ChangeSubscription(controller: controller),
            ],
          ),
        ),
      ),
    );
  }
}

class ManagementNotAvailableWarning extends StatelessWidget {
  final SubscriptionManagementController controller;

  const ManagementNotAvailableWarning({
    required this.controller,
    super.key,
  });

  @override
  Widget build(BuildContext context) {
    final currentSubscriptionInfo =
        controller.subscriptionController.currentSubscriptionInfo;

    String getWarningText() {
      if (controller.currentSubscriptionIsPromotional) {
        if (currentSubscriptionInfo?.isLifetimeSubscription ?? false) {
          return L10n.of(context).promotionalSubscriptionDesc;
        }

        final DateFormat formatter = DateFormat('yyyy-MM-dd');
        return L10n.of(context).trialExpiration(
          formatter.format(currentSubscriptionInfo!.expirationDate!),
        );
      }
      if (controller.currentSubscriptionAvailable) {
        String warningText = L10n.of(context).subsciptionPlatformTooltip;
        if (controller.purchasePlatformDisplayName != null) {
          warningText +=
              "\n${L10n.of(context).originalSubscriptionPlatform(controller.purchasePlatformDisplayName!)}";
        }
        return warningText;
      }
      return L10n.of(context).subscriptionManagementUnavailable;
    }

    return Center(
      child: Padding(
        padding: const EdgeInsets.all(20),
        child: Text(
          getWarningText(),
          textAlign: TextAlign.center,
        ),
      ),
    );
  }
}