import 'package:cached_network_image/cached_network_image.dart';
import 'package:cupertino_lists/cupertino_lists.dart';
import 'package:flutter/cupertino.dart';
import 'package:get/get.dart';
import 'package:isekai_wiki/components/isekai_nav_bar.dart';
import 'package:isekai_wiki/models/user.dart';
import 'package:isekai_wiki/pages/about.dart';
import 'package:isekai_wiki/styles.dart';

import '../components/dummy_icon.dart';
import '../components/follow_scale.dart';

class OwnProfileController extends GetxController {
  late UserController uc;

  @override
  void onInit() {
    super.onInit();
    uc = Get.find<UserController>();
  }

  Future<void> handleLoginClick() {
    handleStartAuth();
    return Future.delayed(const Duration(milliseconds: 100));
  }

  Future<void> handleStartAuth() async {
    await uc.startAuthFlow();
  }

  Future<void> handleLogoutClick() {
    handleLogout();
    return Future.delayed(const Duration(milliseconds: 100));
  }

  Future<void> handleLogout() async {
    await uc.logout();
  }
}

class OwnProfileTab extends StatelessWidget {
  const OwnProfileTab({super.key});

  Widget _buildUserAvatar(UserController uc, {double size = 56}) {
    return Obx(() {
      var avatarUrl = uc.getAvatar(128);

      if (avatarUrl != null && avatarUrl.isNotEmpty) {
        return Container(
          decoration: BoxDecoration(
            borderRadius: BorderRadius.all(Radius.circular(size / 2)),
          ),
          child: CachedNetworkImage(
            width: size,
            height: size,
            placeholder: (_, __) =>
                const CupertinoActivityIndicator(radius: 12),
            imageUrl: avatarUrl,
          ),
        );
      } else {
        return DummyIcon(
          color: CupertinoColors.systemGrey,
          icon: CupertinoIcons.person_fill,
          size: size,
          rounded: true,
        );
      }
    });
  }

  Widget _buildUserSection(BuildContext context) {
    var c = Get.find<OwnProfileController>();
    var uc = Get.find<UserController>();

    return FollowTextScale(
      child: Obx(
        () => !uc.isLoggedIn
            ? CupertinoListSection.insetGrouped(
                backgroundColor: Styles.themePageBackgroundColor,
                children: <CupertinoListTile>[
                  CupertinoListTile.notched(
                    title:
                        const Text('登录/注册', style: Styles.listTileLargeTitle),
                    padding: const EdgeInsets.only(
                        left: 6, right: 14, top: 0, bottom: 0),
                    leading: const DummyIcon(
                      color: CupertinoColors.systemGrey,
                      icon: CupertinoIcons.person_fill,
                      size: 60,
                      rounded: true,
                    ),
                    leadingSize: 80,
                    leadingToTitle: 4,
                    trailing: uc.authProcessing.value
                        ? const Padding(
                            padding: EdgeInsets.only(right: 5),
                            child: CupertinoActivityIndicator(
                              radius: 12,
                            ),
                          )
                        : const CupertinoListTileChevron(),
                    onTap: c.handleLoginClick,
                  ),
                ],
              )
            : CupertinoListSection.insetGrouped(
                backgroundColor: Styles.themePageBackgroundColor,
                children: <CupertinoListTile>[
                  CupertinoListTile.notched(
                    title: Text(uc.getDisplayName,
                        style: Styles.listTileLargeTitle),
                    leading: _buildUserAvatar(uc),
                    leadingSize: 80,
                    leadingToTitle: 4,
                    trailing: const CupertinoListTileChevron(),
                    onTap: () {},
                  ),
                  CupertinoListTile.notched(
                    title: const Text('退出登录'),
                    leading: const DummyIcon(
                      color: CupertinoColors.systemRed,
                      icon: CupertinoIcons.arrow_right_square,
                    ),
                    trailing: const CupertinoListTileChevron(),
                    onTap: () {},
                  ),
                ],
              ),
      ),
    );
  }

  Widget _buildArticleListsSection(BuildContext context) {
    return FollowTextScale(
        child: CupertinoListSection.insetGrouped(
      backgroundColor: Styles.themePageBackgroundColor,
      children: <CupertinoListTile>[
        CupertinoListTile.notched(
          title: const Text('收藏'),
          leading: const DummyIcon(
            color: CupertinoColors.systemYellow,
            icon: CupertinoIcons.star_fill,
          ),
          trailing: const CupertinoListTileChevron(),
          onTap: () {},
        ),
        CupertinoListTile.notched(
          title: const Text('阅读历史'),
          leading: const DummyIcon(
            color: CupertinoColors.systemBlue,
            icon: CupertinoIcons.time_solid,
          ),
          trailing: const CupertinoListTileChevron(),
          onTap: () {},
        ),
        CupertinoListTile.notched(
          title: const Text('贡献'),
          leading: const DummyIcon(
            color: CupertinoColors.systemOrange,
            icon: CupertinoIcons.create,
          ),
          trailing: const CupertinoListTileChevron(),
          onTap: () {},
        ),
      ],
    ));
  }

  Widget _buildSettingsSection(BuildContext context) {
    return FollowTextScale(
        child: CupertinoListSection.insetGrouped(
      backgroundColor: Styles.themePageBackgroundColor,
      children: <CupertinoListTile>[
        CupertinoListTile.notched(
          title: const Text('设置'),
          leading: const DummyIcon(
            color: CupertinoColors.systemGrey,
            icon: CupertinoIcons.settings,
          ),
          trailing: const CupertinoListTileChevron(),
          onTap: () {},
        ),
        CupertinoListTile.notched(
          title: const Text('关于'),
          leading: const DummyIcon(
            color: CupertinoColors.systemBlue,
            icon: CupertinoIcons.info,
          ),
          trailing: const CupertinoListTileChevron(),
          onTap: () async {
            await Navigator.of(context, rootNavigator: false).push(
              CupertinoPageRoute(
                builder: (_) => const AboutPage(),
              ),
            );
          },
        ),
      ],
    ));
  }

  SliverChildBuilderDelegate _buildSliverChildBuilderDelegate(
      BuildContext context) {
    return SliverChildBuilderDelegate(
      (context, index) {
        switch (index) {
          case 0:
            return _buildUserSection(context);
          case 1:
            return _buildArticleListsSection(context);
          case 2:
            return _buildSettingsSection(context);
          default:
          // Do nothing. For now.
        }
        return null;
      },
    );
  }

  @override
  Widget build(BuildContext context) {
    Get.put(OwnProfileController());

    return CustomScrollView(
      slivers: <Widget>[
        const IsekaiSliverNavigationBar(
          largeTitle: Text('我的'),
        ),
        SliverSafeArea(
          top: false,
          minimum: const EdgeInsets.only(top: 4),
          sliver: SliverList(
            delegate: _buildSliverChildBuilderDelegate(context),
          ),
        )
      ],
    );
  }
}