import 'dart:io';

import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:image_picker/image_picker.dart';
import 'package:yumi/app/constants/sc_global_config.dart';
import 'package:yumi/app/routes/sc_fluro_navigator.dart';
import 'package:yumi/app_localizations.dart';
import 'package:yumi/modules/room/background/room_background_apply_service.dart';
import 'package:yumi/modules/room/background/room_background_assets.dart';
import 'package:yumi/shared/tools/sc_loading_manager.dart';
import 'package:yumi/ui_kit/components/sc_tts.dart';
import 'package:yumi/ui_kit/components/appbar/socialchat_appbar.dart';
import 'package:yumi/ui_kit/theme/socialchat_theme.dart';

class RoomBackgroundUploadPage extends StatefulWidget {
  const RoomBackgroundUploadPage({super.key});

  @override
  State<RoomBackgroundUploadPage> createState() =>
      _RoomBackgroundUploadPageState();
}

class _RoomBackgroundUploadPageState extends State<RoomBackgroundUploadPage> {
  final ImagePicker _picker = ImagePicker();
  File? _selectedImage;
  bool _isSaving = false;

  Future<void> _pickImage() async {
    if (_isSaving) {
      return;
    }
    final pickedFile = await _picker.pickImage(
      source: ImageSource.gallery,
      imageQuality: 90,
      maxWidth: 1920,
      maxHeight: 1080,
    );
    if (pickedFile == null || !mounted) {
      return;
    }

    setState(() {
      _selectedImage = File(pickedFile.path);
    });
  }

  Future<void> _saveBackground() async {
    final selectedImage = _selectedImage;
    if (selectedImage == null || _isSaving) {
      return;
    }
    final localizations = SCAppLocalizations.of(context)!;
    setState(() {
      _isSaving = true;
    });
    SCLoadingManager.show(context: context);
    try {
      final roomBackground = await RoomBackgroundApplyService.apply(
        context,
        selectedImage.path,
      );
      if (!mounted) {
        return;
      }
      SCTts.show(localizations.operationSuccessful);
      SCNavigatorUtils.goBackWithParams(context, roomBackground);
    } catch (e, stackTrace) {
      if (mounted) {
        SCTts.show(localizations.operationFail);
      }
    } finally {
      SCLoadingManager.hide();
      if (mounted) {
        setState(() {
          _isSaving = false;
        });
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    final localizations = SCAppLocalizations.of(context)!;
    return Stack(
      children: [
        Image.asset(
          SCGlobalConfig.businessLogicStrategy.getLanguagePageBackgroundImage(),
          width: ScreenUtil().screenWidth,
          height: ScreenUtil().screenHeight,
          fit: BoxFit.fill,
        ),
        Scaffold(
          backgroundColor: Colors.transparent,
          appBar: SocialChatStandardAppBar(
            title: localizations.customBackground,
            actions: const [],
            backButtonColor: Colors.white,
            backgroundColor: Colors.transparent,
          ),
          body: Container(
            color: const Color(0xff0F0F0F),
            child: SingleChildScrollView(
              padding: EdgeInsets.fromLTRB(18.w, 20.w, 18.w, 28.w),
              child: Column(
                children: [
                  GestureDetector(
                    onTap: _pickImage,
                    child: Container(
                      width: 132.w,
                      height: 170.w,
                      decoration: BoxDecoration(
                        borderRadius: BorderRadius.circular(14.w),
                        color: const Color(0xff143B34),
                        border: Border.all(
                          color: SocialChatTheme.primaryLight,
                          width: 1.w,
                        ),
                      ),
                      child:
                          _selectedImage != null
                              ? ClipRRect(
                                borderRadius: BorderRadius.circular(14.w),
                                child: Image.file(
                                  _selectedImage!,
                                  fit: BoxFit.cover,
                                ),
                              )
                              : Column(
                                mainAxisAlignment: MainAxisAlignment.center,
                                children: [
                                  Icon(
                                    Icons.file_upload_outlined,
                                    color: Colors.white,
                                    size: 28.w,
                                  ),
                                  SizedBox(height: 10.w),
                                  Text(
                                    localizations.goToUpload,
                                    style: TextStyle(
                                      color: Colors.white,
                                      fontSize: 13.sp,
                                      fontWeight: FontWeight.w500,
                                    ),
                                  ),
                                ],
                              ),
                    ),
                  ),
                  SizedBox(height: 16.w),
                  Text(
                    localizations.pleaseUploadAccordingToExample,
                    textAlign: TextAlign.center,
                    style: TextStyle(
                      color: Colors.white54,
                      fontSize: 13.sp,
                      fontWeight: FontWeight.w500,
                    ),
                  ),
                  SizedBox(height: 20.w),
                  Text(
                    localizations.example,
                    style: TextStyle(
                      color: SocialChatTheme.primaryLight,
                      fontSize: 18.sp,
                      fontWeight: FontWeight.w700,
                    ),
                  ),
                  SizedBox(height: 16.w),
                  SizedBox(
                    height: 300.w,
                    child: ListView.separated(
                      scrollDirection: Axis.horizontal,
                      padding: EdgeInsets.symmetric(horizontal: 28.w),
                      itemCount: roomBackgroundExampleAssets.length,
                      separatorBuilder: (_, __) => SizedBox(width: 16.w),
                      itemBuilder:
                          (context, index) => _RoomBackgroundExampleCard(
                            assetPath: roomBackgroundExampleAssets[index],
                          ),
                    ),
                  ),
                  SizedBox(height: 16.w),
                  Text(
                    localizations.approvedWithinOneMinute,
                    style: TextStyle(
                      color: const Color(0xffF26F6F),
                      fontSize: 13.sp,
                      fontWeight: FontWeight.w500,
                    ),
                  ),
                  SizedBox(height: 28.w),
                  GestureDetector(
                    behavior: HitTestBehavior.opaque,
                    onTap: _selectedImage == null ? null : _saveBackground,
                    child: Opacity(
                      opacity: _selectedImage == null || _isSaving ? 0.45 : 1,
                      child: Container(
                        height: 48.w,
                        width: double.infinity,
                        alignment: Alignment.center,
                        decoration: BoxDecoration(
                          borderRadius: BorderRadius.circular(999.w),
                          gradient: LinearGradient(
                            colors: [
                              SocialChatTheme.primaryLight,
                              const Color(0xff8BF2D0),
                            ],
                          ),
                        ),
                        child: Text(
                          localizations.save,
                          style: TextStyle(
                            color: const Color(0xff0B2823),
                            fontSize: 16.sp,
                            fontWeight: FontWeight.w700,
                          ),
                        ),
                      ),
                    ),
                  ),
                ],
              ),
            ),
          ),
        ),
      ],
    );
  }
}

class _RoomBackgroundExampleCard extends StatelessWidget {
  const _RoomBackgroundExampleCard({required this.assetPath});

  final String assetPath;

  @override
  Widget build(BuildContext context) {
    final localizations = SCAppLocalizations.of(context)!;
    return SizedBox(
      width: 140.w,
      height: 300.w,
      child: ClipRRect(
        borderRadius: BorderRadius.circular(14.w),
        child: Stack(
          children: [
            Positioned.fill(
              child: Image.asset(
                assetPath,
                fit: BoxFit.cover,
                errorBuilder:
                    (_, __, ___) => Container(
                      color: const Color(0xff143B34),
                      alignment: Alignment.center,
                      child: Icon(
                        Icons.image_outlined,
                        size: 42.w,
                        color: Colors.white.withValues(alpha: 0.12),
                      ),
                    ),
              ),
            ),
            Positioned(
              left: 12.w,
              right: 12.w,
              bottom: 18.w,
              child: Container(
                padding: EdgeInsets.symmetric(horizontal: 10.w, vertical: 8.w),
                decoration: BoxDecoration(
                  borderRadius: BorderRadius.circular(999.w),
                  border: Border.all(
                    color: SocialChatTheme.primaryLight,
                    width: 1.w,
                  ),
                  color: const Color(0xff1B4A40).withValues(alpha: 0.82),
                ),
                child: Text(
                  localizations.staticOrGifImage,
                  textAlign: TextAlign.center,
                  style: TextStyle(
                    color: Colors.white,
                    fontSize: 11.sp,
                    fontWeight: FontWeight.w500,
                  ),
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }
}