import 'package:expandable_text/expandable_text.dart';
import 'package:flutter/material.dart';
import 'package:firebase_auth/firebase_auth.dart';

import '../components/language_list.dart';
import '../constants.dart';
import '../enumerations.dart';
import '../forms/corporate_culture_form.dart';
import '../forms/risks_form.dart';
import '../forms/sectors_form.dart';
import '../forms/skills_form.dart';
import '../models/user_profile.dart';
import '../services/user_service.dart';
import '../utils/helper.dart';
import '../utils/list_utils.dart';
import '../utils/math.dart';
import 'edit_profile_page.dart';
import 'user_data_page.dart';
import 'user_vision_page.dart';

class UserProfilePage extends StatefulWidget {
  const UserProfilePage({super.key, this.userId});

  final String? userId;

  @override
  State<UserProfilePage> createState() => _UserProfilePageState();
}

class _UserProfilePageState extends State<UserProfilePage> {
  String? profileImageUrl; // Track the profile image URL
  late UserProfile myData;
  bool isLoading = true;
  late bool isOwner;
  late String _userId;

  @override
  void initState() {
    super.initState();

    // Determine the userId to use, then check if user is the current user
    _userId = widget.userId ?? FirebaseAuth.instance.currentUser!.uid;
    isOwner = (_userId == FirebaseAuth.instance.currentUser!.uid);

    // Load user data on initialization
    _loadUserData();
  }

  Future<void> _loadUserData() async {
    myData = await UserService.getUserProfileById(_userId);

    setState(() {
      // Initialize the profile image URL
      profileImageUrl = myData.profilePictureUrl;
      // Set loading to false once data is loaded
      isLoading = false;
    });
  }

  void editNameInfo() async {
    final updatedUserData = await Navigator.push(
      context,
      MaterialPageRoute(
        builder: (context) => EditProfilePage(userData: myData),
      ),
    );

    if (updatedUserData != null) {
      setState(() {
        // above Type of updatedUserData is dynamic, so check EditProfilePage
        profileImageUrl = updatedUserData[Constants.dbFieldUsersProfilePic];
        myData.profilePictureUrl =
            updatedUserData[Constants.dbFieldUsersProfilePic];
        myData.name = updatedUserData[Constants.dbFieldUsersName];
        myData.bio = updatedUserData[Constants.dbFieldUsersBio];
      });
    }
  }

  void editUserDataInfo() async {
    final updatedUserData = await Navigator.push(
      context,
      MaterialPageRoute(
        builder: (context) =>
            const UserDataPage(isRegProcess: false, isEditMode: true),
      ),
    );

    if (updatedUserData != null) {
      setState(() {
        // above Type of updatedUserData is dynamic, so check UserDataPage
        myData.born = updatedUserData[Constants.dbFieldUsersYearBorn];
        myData.gender = updatedUserData[Constants.dbFieldUsersGender];
        myData.languages = updatedUserData[Constants.dbCollectionLanguages];
        myData.locations = updatedUserData[Constants.dbCollectionLocations];
      });
    }
  }

  void _editSkills({required bool skillsSought}) async {
    final updatedUserData = await Navigator.push(
      context,
      MaterialPageRoute(
        builder: (context) => SkillsForm(
          isRegProcess: false,
          skillsSought: skillsSought,
          isEditMode: true,
        ),
      ),
    );

    if (updatedUserData != null) {
      setState(() {
        // above Type of updatedUserData is dynamic, so convert
        if (skillsSought) {
          List<dynamic> dynamicList =
              updatedUserData[Constants.dbFieldUsersSkillsSought];
          myData.skillsSought =
              dynamicList.map((e) => e as SkillOption).toList();
        } else {
          List<dynamic> dynamicList =
              updatedUserData[Constants.dbFieldUsersSkills];
          myData.skills = dynamicList.map((e) => e as SkillOption).toList();
        }
      });
    }
  }

  void editUserSkillsInfo() async {
    _editSkills(skillsSought: false);
  }

  void editUserSkillsSoughtInfo() async {
    _editSkills(skillsSought: true);
  }

  void editUserSectorsInfo() async {
    final updatedUserData = await Navigator.push(
      context,
      MaterialPageRoute(
        builder: (context) => SectorsForm(
          isRegProcess: false,
          isEditMode: true,
        ),
      ),
    );

    if (updatedUserData != null) {
      setState(() {
        // above Type of updatedUserData is dynamic, so convert
        List<dynamic> dynamicList =
            updatedUserData[Constants.dbFieldUsersSectors];
        myData.sectors = dynamicList.map((e) => e as SectorOption).toList();
      });
    }
  }

  void editUserVisionInfo() async {
    final updatedUserData = await Navigator.push(
      context,
      MaterialPageRoute(
        builder: (context) => const UserVisionPage(
          isRegProcess: false,
          isEditMode: true,
        ),
      ),
    );

    if (updatedUserData != null) {
      setState(() {
        // above Type of updatedUserData is dynamic, so convert
        List<dynamic> dynamicList =
            updatedUserData[Constants.dbFieldUsersVisions];
        myData.visions = dynamicList.map((e) => e as VisionOption).toList();
        myData.availability =
            updatedUserData[Constants.dbFieldUsersAvailability];
      });
    }
  }

  void editUserWorkCultureInfo() async {
    final updatedUserData = await Navigator.push(
      context,
      MaterialPageRoute(
        builder: (context) => const CultureValuesFormPage(
          isRegProcess: false,
          isEditMode: true,
        ),
      ),
    );

    if (updatedUserData != null) {
      setState(() {
        // above Type of updatedUserData is dynamic, so convert
        List<dynamic> dynamicList =
            updatedUserData[Constants.dbFieldUsersWorkValues];
        myData.workValues =
            dynamicList.map((e) => e as WorkValueOption).toList();
        myData.culture = updatedUserData[Constants.dbFieldUsersCorpCulture];
      });
    }
  }

  void editUserCommunicationInfo() async {
    final updatedUserData = await Navigator.push(
      context,
      MaterialPageRoute(
        builder: (context) => const RisksFormPage(
          isRegProcess: false,
          isEditMode: true,
        ),
      ),
    );

    if (updatedUserData != null) {
      setState(() {
        // above Type of updatedUserData is dynamic, so convert
        myData.risk = updatedUserData[Constants.dbFieldUsersRiskTolerance];
        myData.communication =
            updatedUserData[Constants.dbFieldUsersCommunication];
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(isOwner ? 'My Profile Information' : 'Profile Information'),
      ),
      body: isLoading
          ? const Center(child: CircularProgressIndicator())
          : Padding(
              padding: const EdgeInsets.all(16.0),
              child: SingleChildScrollView(
                child: Column(
                  children: [
                    _buildAvatar(context),
                    const SizedBox(height: 16),
                    if (isOwner)
                      Divider(color: Theme.of(context).colorScheme.primary),
                    if (isOwner) const SizedBox(height: 16),
                    _buildLocation(context),
                    const SizedBox(height: 16),
                    if (isOwner)
                      Divider(color: Theme.of(context).colorScheme.primary),
                    if (isOwner) const SizedBox(height: 16),
                    _buildSkills(context),
                    const SizedBox(height: 16),
                    if (isOwner)
                      Divider(color: Theme.of(context).colorScheme.primary),
                    if (isOwner) const SizedBox(height: 16),
                    _buildSectors(context),
                    const SizedBox(height: 16),
                    if (isOwner)
                      Divider(color: Theme.of(context).colorScheme.primary),
                    if (isOwner) const SizedBox(height: 16),
                    _buildVision(context),
                    const SizedBox(height: 16),
                    if (isOwner)
                      Divider(color: Theme.of(context).colorScheme.primary),
                    if (isOwner) const SizedBox(height: 16),
                    _buildWorkCulture(context),
                    const SizedBox(height: 16),
                    if (isOwner)
                      Divider(color: Theme.of(context).colorScheme.primary),
                    if (isOwner) const SizedBox(height: 16),
                    _buildRisks(context),
                    const SizedBox(height: 16),
                    if (isOwner)
                      Divider(color: Theme.of(context).colorScheme.primary),
                    if (isOwner) const SizedBox(height: 16),
                  ],
                ),
              ),
            ),
    );
  }

  Widget _buildRisks(BuildContext context) {
    return Column(
      children: [
        Align(
          alignment: Alignment.centerLeft,
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text(
                          'Communication profile',
                          style: TextStyle(
                            color: Theme.of(context).colorScheme.primary,
                          ),
                        ),
                        Text(myData.communication.displayName,
                            style: const TextStyle(fontSize: 16)),
                      ],
                    ),
                  ),
                  if (isOwner)
                    Padding(
                      padding: const EdgeInsets.only(left: 8.0),
                      child: _editButton(context, editUserCommunicationInfo),
                    ),
                ],
              ),
              const SizedBox(height: 16),
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text(
                          'Risk profile',
                          style: TextStyle(
                            color: Theme.of(context).colorScheme.primary,
                          ),
                        ),
                        Text(myData.risk.displayName,
                            style: const TextStyle(fontSize: 16)),
                      ],
                    ),
                  ),
                ],
              ),
            ],
          ),
        ),
      ],
    );
  }

  Widget _buildWorkCulture(BuildContext context) {
    return Column(
      children: [
        Align(
          alignment: Alignment.centerLeft,
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text(
                          'Corporate culture',
                          style: TextStyle(
                            color: Theme.of(context).colorScheme.primary,
                          ),
                        ),
                        Text(myData.culture.displayName,
                            style: const TextStyle(fontSize: 16)),
                      ],
                    ),
                  ),
                  if (isOwner)
                    Padding(
                      padding: const EdgeInsets.only(left: 8.0),
                      child: _editButton(context, editUserWorkCultureInfo),
                    ),
                ],
              ),
              const SizedBox(height: 16),
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text(
                          'Corporate values',
                          style: TextStyle(
                            color: Theme.of(context).colorScheme.primary,
                          ),
                        ),
                        Text(
                            myData.workValues
                                .map((x) => x.displayName)
                                .join(',\n'),
                            style: const TextStyle(fontSize: 16)),
                      ],
                    ),
                  ),
                ],
              ),
            ],
          ),
        ),
      ],
    );
  }

  Widget _buildVision(BuildContext context) {
    return Column(
      children: [
        Align(
          alignment: Alignment.centerLeft,
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text(
                          'Availability',
                          style: TextStyle(
                            color: Theme.of(context).colorScheme.primary,
                          ),
                        ),
                        Text(myData.availability.displayName,
                            style: const TextStyle(fontSize: 16)),
                      ],
                    ),
                  ),
                  if (isOwner) _editButton(context, editUserVisionInfo),
                ],
              ),
              const SizedBox(height: 16),
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text(
                          'Vision and Goals',
                          style: TextStyle(
                            color: Theme.of(context).colorScheme.primary,
                          ),
                        ),
                        Text(
                            myData.visions
                                .map((x) => x.displayName)
                                .join(',\n'),
                            style: const TextStyle(fontSize: 16)),
                      ],
                    ),
                  ),
                ],
              ),
            ],
          ),
        ),
      ],
    );
  }

  Widget _buildSectors(BuildContext context) {
    return Column(
      children: [
        Align(
          alignment: Alignment.centerLeft,
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text(
                          'Sectors of Interest',
                          style: TextStyle(
                            color: Theme.of(context).colorScheme.primary,
                          ),
                        ),
                        Text(
                            sortSectorsList(myData.sectors)
                                .map((x) => x.displayName)
                                .join('\n'),
                            style: const TextStyle(fontSize: 16)),
                      ],
                    ),
                  ),
                  if (isOwner) _editButton(context, editUserSectorsInfo),
                ],
              ),
              const SizedBox(height: 16),
            ],
          ),
        ),
      ],
    );
  }

  Widget _buildSkills(BuildContext context) {
    return Column(
      children: [
        Align(
          alignment: Alignment.centerLeft,
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text(
                          'Skills offered',
                          style: TextStyle(
                            color: Theme.of(context).colorScheme.primary,
                          ),
                        ),
                        Text(myData.skills.map((x) => x.displayName).join(', '),
                            style: const TextStyle(fontSize: 16)),
                      ],
                    ),
                  ),
                  if (isOwner) _editButton(context, editUserSkillsInfo),
                ],
              ),
              const SizedBox(height: 16),
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text(
                          'Skills sought',
                          style: TextStyle(
                            color: Theme.of(context).colorScheme.primary,
                          ),
                        ),
                        Text(
                            myData.skillsSought
                                .map((x) => x.displayName)
                                .join(', '),
                            style: const TextStyle(fontSize: 16)),
                      ],
                    ),
                  ),
                  if (isOwner) _editButton(context, editUserSkillsSoughtInfo),
                ],
              ),
            ],
          ),
        ),
      ],
    );
  }

  Widget _buildLocation(BuildContext context) {
    int age = calcAge(myData.born);
    return Column(
      children: [
        Align(
          alignment: Alignment.centerLeft,
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      Text(
                        myData.locations.length > 1 ? 'Locations' : 'Location',
                        style: TextStyle(
                          color: Theme.of(context).colorScheme.primary,
                        ),
                      ),
                      if (myData.locations.isEmpty)
                        const Text('n/a', style: TextStyle(fontSize: 16)),
                      if (myData.locations
                          .containsKey(Constants.dbDocMainLocation))
                        Text(
                          myData.locations[Constants.dbDocMainLocation]
                              .toString(),
                          style: const TextStyle(fontSize: 16),
                        ),
                      if (myData.locations
                          .containsKey(Constants.dbDocSecondLocation))
                        Text(
                          myData.locations[Constants.dbDocSecondLocation]
                              .toString(),
                          style: const TextStyle(fontSize: 16),
                        ),
                    ],
                  ),
                  if (isOwner)
                    _editButton(context, editUserDataInfo,
                        alignment: Alignment.bottomRight),
                ],
              ),
              if (isOwner) const SizedBox(height: 16),
              if (isOwner)
                Text(
                  'Age',
                  style: TextStyle(
                    color: Theme.of(context).colorScheme.primary,
                  ),
                ),
              if (isOwner)
                Text(
                  (age > 0 ? '$age years old, born ${myData.born}' : 'n/a'),
                  style: const TextStyle(fontSize: 16),
                ),
              if (isOwner) const SizedBox(height: 16),
              if (isOwner)
                Text(
                  'Gender',
                  style: TextStyle(
                    color: Theme.of(context).colorScheme.primary,
                  ),
                ),
              if (isOwner)
                Text(getDisplayText(myData.gender),
                    style: const TextStyle(fontSize: 16)),
              const SizedBox(height: 16),
              Text(
                'Spoken languages',
                style: TextStyle(
                  color: Theme.of(context).colorScheme.primary,
                ),
              ),
              MyLanguageList(
                langList: myData.languages,
                textSize: 16,
              ),
            ],
          ),
        ),
      ],
    );
  }

  Widget _buildAvatar(BuildContext context) {
    Widget genderIcon = const Icon(null);
    if (myData.gender == Gender.male) {
      genderIcon = const Padding(
        padding: EdgeInsets.only(left: 4.0),
        child: Icon(Icons.male, color: Colors.blue),
      );
    } else if (myData.gender == Gender.female) {
      genderIcon = const Icon(Icons.female, color: Colors.pink);
    }

    return Column(
      children: [
        if (isOwner)
          _editButton(context, editNameInfo, alignment: Alignment.bottomRight),
        CircleAvatar(
          radius: 80,
          backgroundImage:
              ((profileImageUrl != null && profileImageUrl!.isNotEmpty))
                  ? NetworkImage(profileImageUrl!)
                  : null,
          child: (profileImageUrl == null || profileImageUrl!.isEmpty)
              ? const Icon(Icons.person, size: 80)
              : null,
        ),
        const SizedBox(height: 16),
        Row(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Flexible(
              child: Text(
                isOwner
                    ? myData.name
                    : '${myData.name} ${ageInfo(myData.born)}'.trim(),
                style: const TextStyle(fontSize: 24),
              ),
            ),
            genderIcon,
          ],
        ),
        if (isOwner) Text(myData.email, style: const TextStyle(fontSize: 16)),
        const SizedBox(height: 32),
        Align(
          alignment: Alignment.centerLeft,
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Text(
                isOwner ? 'Short description of yourself' : 'Short description',
                style: TextStyle(
                  color: Theme.of(context).colorScheme.primary,
                ),
              ),
              ExpandableText(
                linkEllipsis: false,
                collapseOnTextTap: true,
                expandOnTextTap: true,
                myData.bio ?? 'n/a',
                expandText: '[Expand]',
                collapseText: '[Collapse]',
                maxLines: 3,
                linkColor: Colors.blue,
                style: const TextStyle(fontSize: 16),
              ),
            ],
          ),
        ),
      ],
    );
  }

  Widget _editButton(BuildContext context, void Function()? onPressedFunction,
      {Alignment alignment = Alignment.topRight}) {
    return Align(
      alignment: alignment,
      child: IconButton(
        icon: const Icon(Icons.edit),
        onPressed: onPressedFunction,
      ),
    );
  }
}