import 'package:dart_nostr/dart_nostr.dart';
import 'package:drifter/models/models.dart';
import 'package:drifter/pages/profile_screen/widgets/delete_keys_dialog.dart';
import 'package:drifter/main.dart';
import 'package:drifter/pages/profile_screen/widgets/key_exist_dialog.dart';
import 'package:drifter/pages/profile_screen/widgets/keys_option_modal_bottom_sheet.dart';
import 'package:drifter/pages/profile_screen/widgets/message_snack_bar.dart';
import 'package:drifter/pages/profile_screen/widgets/user_info_widget.dart';
import 'package:drifter/theme/app_colors.dart';
import 'package:flutter/material.dart';
import 'package:flutter_secure_storage/flutter_secure_storage.dart';

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

  @override
  State<ProfileScreen> createState() => ProfileScreenState();
}

class ProfileScreenState extends State<ProfileScreen> {
  final secureStorage = const FlutterSecureStorage();
  bool _toHex = false;

  TextEditingController privateKeyInput = TextEditingController();
  TextEditingController publicKeyInput = TextEditingController();

  // final keyGenerator = KeyApi();
  // final nip19 = Nip19();

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

  Future<bool> generateNewKeys() async {
    final newPrivateKey = await Nostr.instance.keysService.generatePrivateKey();
    // final newPrivateKey = keyGenerator.generatePrivateKey();

    final nsec =
        Nostr.instance.keysService.encodePrivateKeyToNsec(newPrivateKey);

    // final nsecDecoded =
    //     Nostr.instance.keysService.decodeNsecKeyToPrivateKey(nsec);
    // assert(nsecDecoded['type'] == 'nsec');
    // assert(nsecDecoded['data'] == newPrivateKey);

    final newPublicKey = await Nostr.instance.keysService
        .derivePublicKey(privateKey: newPrivateKey);
    // final newPublicKey = keyGenerator.getPublicKey(newPrivateKey);

    final npub = Nostr.instance.keysService.encodePublicKeyToNpub(newPublicKey);

    // final npubDecoded =
    //     Nostr.instance.keysService.decodeNpubKeyToPublicKey(npub);
    // assert(npubDecoded['type'] == 'npub');
    // assert(npubDecoded['data'] == newPublicKey);

    return await addKeyToStorage(newPrivateKey, newPublicKey, nsec, npub);
  }

  Future<void> _getKeysFromStorage() async {
    // Reading values associated with the " privateKey " and " publicKey " keys from a secure repository
    final storedPrivateKey = await secureStorage.read(key: 'privateKey');
    final storedPublicKey = await secureStorage.read(key: 'publicKey');

    final storedNsecKey = await secureStorage.read(key: 'nsec');
    final storedNpubKey = await secureStorage.read(key: 'npub');

    // Indicates that both private and public keys are stored in a secure repository, after which, the state variables are updated
    if (storedPrivateKey != null &&
        storedPublicKey != null &&
        storedNsecKey != null &&
        storedNpubKey != null) {
      setState(() {
        Keys.privateKey = storedPrivateKey;
        Keys.publicKey = storedPublicKey;
        Keys.nsecKey = storedNsecKey;
        Keys.npubKey = storedNpubKey;
        Keys.keysExist = true;
      });
    }
  }

  // Adding a new key
// Writing a private and public key to a secure vault
  Future<bool> addKeyToStorage(
    String privateKeyHex,
    String publicKeyHex,
    String nsecKey,
    String npubKey,
  ) async {
// Waiting for both write operations to complete
    Future.wait([
      secureStorage.write(key: 'privateKey', value: privateKeyHex),
      secureStorage.write(key: 'publicKey', value: publicKeyHex),
      secureStorage.write(key: 'nsec', value: nsecKey),
      secureStorage.write(key: 'npub', value: npubKey),
    ]);

    // Updating status variables and starting widget rebuilding
    setState(() {
      Keys.privateKey = privateKeyHex;
      Keys.publicKey = publicKeyHex;
      Keys.nsecKey = nsecKey;
      Keys.npubKey = npubKey;
      Keys.keysExist = true;
    });

// Returns a boolean value indicating whether the keys were successfully added to the repository or not.
    return Keys.keysExist;
  }

  Future<void> _deleteKeysStorage() async {
    // Calling secure storage to remove keys from storage
    Future.wait([
      secureStorage.delete(key: 'privateKey'),
      secureStorage.delete(key: 'publicKey'),
      secureStorage.delete(key: 'nsec'),
      secureStorage.delete(key: 'npub'),
    ]);

    // Updating status variables, resetting values after deleting keys from the repository
    setState(() {
      Keys.privateKey = '';
      Keys.publicKey = '';
      Keys.nsecKey = '';
      Keys.npubKey = '';
      Keys.keysExist = false;
    });
  }

  @override
  Widget build(BuildContext context) {
    publicKeyInput.text = Keys.npubKey;

    return Container(
      color: AppColors.profileWrapperBg,
      child: Column(
        children: [
          Stack(
            children: [
              Container(
                width: double.infinity,
                height: 70,
                child: FittedBox(
                  child: Image.asset('assets/images/banner.png'),
                  fit: BoxFit.fill,
                ),
              ),
              Row(
                children: [
                  Padding(
                    padding:
                        const EdgeInsets.only(top: 30, left: 16, right: 58),
                    child: ClipRRect(
                      borderRadius: BorderRadius.circular(200),
                      child: Container(
                          width: 80,
                          height: 80,
                          decoration: BoxDecoration(
                              border: Border.all(
                                  width: 2, color: Color(0xFFF2EFFF))),
                          child: Image.asset('assets/images/avatar.png')),
                    ),
                  ),
                  Expanded(
                    child: Container(
                      margin: EdgeInsets.only(top: 74, right: 16),
                      child: Row(
                        mainAxisAlignment: MainAxisAlignment.end,
                        children: [
                          SizedBox(
                            width: 32,
                            height: 32,
                            child: FloatingActionButton(
                              backgroundColor:
                                  AppColors.buttonSecondaryDefaultBg,
                              onPressed: () {},
                              elevation: 0,
                              child: Icon(
                                Icons.edit,
                                size: 18,
                                color: AppColors.buttonSecondaryIcon,
                              ),
                            ),
                          ),
                          SizedBox(
                            width: 8,
                          ),
                          SizedBox(
                            width: 32,
                            height: 32,
                            child: FloatingActionButton(
                              backgroundColor:
                                  AppColors.buttonSecondaryDefaultBg,
                              onPressed: () {
                                Navigator.pushNamed(context, '/QrCodeScreen');
                              },
                              elevation: 0,
                              child: Icon(
                                Icons.qr_code,
                                size: 18,
                                color: AppColors.buttonSecondaryIcon,
                              ),
                            ),
                          ),
                          SizedBox(
                            width: 8,
                          ),
                          SizedBox(
                            width: 32,
                            height: 32,
                            child: FloatingActionButton(
                              backgroundColor:
                                  AppColors.buttonSecondaryDefaultBg,
                              onPressed: () {},
                              elevation: 0,
                              child: Icon(
                                Icons.mail_outlined,
                                size: 18,
                                color: AppColors.buttonSecondaryIcon,
                              ),
                            ),
                          ),
                          SizedBox(
                            width: 8,
                          ),
                          SizedBox(
                            width: 100,
                            height: 32,
                            child: ElevatedButton(
                                onPressed: () {},
                                child: Text(
                                  'Follow',
                                  style: TextStyle(
                                      color:
                                          AppColors.buttonPrimaryDefaultText),
                                ),
                                style: ElevatedButton.styleFrom(
                                    backgroundColor:
                                        AppColors.buttonPrimaryDefaultBg,
                                    shape: RoundedRectangleBorder(
                                        borderRadius:
                                            BorderRadius.circular(100)))),
                          )
                        ],
                      ),
                    ),
                  )
                ],
              )
            ],
          ),
          Container(
            child: Padding(
              padding: const EdgeInsets.all(16.0),
              child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Text(
                      'Cameron Williamson',
                      style: TextStyle(
                          color: AppColors.profileFullName,
                          fontWeight: FontWeight.w600),
                    ),
                    SizedBox(
                      height: 5,
                    ),
                    Text('@cameron',
                        style: TextStyle(
                          color: AppColors.profileUserName,
                        )),
                    SizedBox(
                      height: 5,
                    ),
                    Text(
                        'This is the description of my profile. I am a nostrich and I love cats. Follow me for fun pictures and bad jokes. I also want to be a politician.',
                        style: TextStyle(
                          color: AppColors.profileSummary,
                        )),
                    SizedBox(
                      height: 12,
                    ),
                    Container(
                      child: TextField(
                        style: TextStyle(color: AppColors.profileKeyText),
                        readOnly: true,
                        decoration: InputDecoration(
                            suffixIcon: Row(
                              mainAxisSize: MainAxisSize.min,
                              children: [
                                IconButton(
                                  icon: Icon(Icons.copy),
                                  color: AppColors.buttonSecondaryIcon,
                                  onPressed: () {},
                                ),
                                IconButton(
                                  icon: Icon(Icons.qr_code),
                                  color: AppColors.buttonSecondaryIcon,
                                  onPressed: () {},
                                ),
                              ],
                            ),
                            filled: true,
                            fillColor: AppColors.profileKeyField,
                            border: OutlineInputBorder(
                              borderRadius: BorderRadius.circular(8),
                              borderSide:
                                  BorderSide(width: 0, style: BorderStyle.none),
                            )),
                        minLines: 2,
                        maxLines: 2,
                        controller: publicKeyInput,
                      ),
                    ),
                    Container(
                      child: Column(
                          crossAxisAlignment: CrossAxisAlignment.start,
                          children: <Widget>[
                            TextButton.icon(
                              // <-- TextButton
                              onPressed: () {},
                              icon: Icon(
                                Icons.check_circle,
                                size: 15.0,
                                color: AppColors.profileSocialIcons,
                              ),
                              label: Text(
                                'nip-05-name',
                                style: TextStyle(
                                    color: AppColors.profileSocialLinks,
                                    fontWeight: FontWeight.w500),
                              ),
                            ),
                            SizedBox(
                              height: 6,
                            ),
                            TextButton.icon(
                              // <-- TextButton
                              onPressed: () {},
                              icon: Icon(
                                Icons.check_circle,
                                size: 15.0,
                                color: AppColors.profileSocialIcons,
                              ),
                              label: Text(
                                'www.cameronforpresident.com',
                                style: TextStyle(
                                    color: AppColors.profileSocialLinks,
                                    fontWeight: FontWeight.w500),
                              ),
                            ),
                            SizedBox(
                              height: 6,
                            ),
                            TextButton.icon(
                              // <-- TextButton
                              onPressed: () {},
                              icon: Icon(
                                Icons.score,
                                size: 15.0,
                                color: AppColors.profileSocialIcons,
                              ),
                              label: Text(
                                '@cameron_official',
                                style: TextStyle(
                                    color: AppColors.profileSocialLinks,
                                    fontWeight: FontWeight.w500),
                              ),
                            ),
                            SizedBox(
                              height: 6,
                            ),
                            TextButton.icon(
                              // <-- TextButton
                              onPressed: () {},
                              icon: Icon(
                                Icons.check_circle,
                                size: 15.0,
                                color: AppColors.profileSocialIcons,
                              ),
                              label: Text(
                                'cameron.williamson.com/@cameron_official',
                                style: TextStyle(
                                    color: AppColors.profileSocialLinks,
                                    fontWeight: FontWeight.w500),
                              ),
                            ),
                            SizedBox(
                              height: 6,
                            ),
                            TextButton.icon(
                              // <-- TextButton
                              onPressed: () {},
                              icon: Icon(
                                Icons.flash_on,
                                size: 15.0,
                                color: AppColors.profileSocialIcons,
                              ),
                              label: Text(
                                'whoknowswhatgoeshere',
                                style: TextStyle(
                                    color: AppColors.profileSocialLinks,
                                    fontWeight: FontWeight.w500),
                              ),
                            ),
                            SizedBox(
                              height: 6,
                            ),
                            TextButton.icon(
                              // <-- TextButton
                              onPressed: () {},
                              icon: Icon(
                                Icons.flash_on,
                                size: 15.0,
                                color: AppColors.profileSocialIcons,
                              ),
                              label: Text(
                                'cameron@satoshiwallet.com',
                                style: TextStyle(
                                    color: AppColors.profileSocialLinks,
                                    fontWeight: FontWeight.w500),
                              ),
                            ),
                          ]),
                    )
                  ]),
            ),
          ),
        ],
      ),
    );
    // return ListView(
    //   children: [
    //     const SizedBox(
    //       height: 60,
    //     ),
    //     const UserInfo(),
    //     const SizedBox(
    //       height: 40,
    //     ),
    //     FormKeys(),
    //     const SizedBox(height: 20),
    //     Padding(
    //       padding: const EdgeInsets.all(16.0),
    //       child: Row(
    //         mainAxisAlignment: MainAxisAlignment.spaceAround,
    //         children: [
    //           Keys.keysExist
    //               ? IconButton(
    //                   onPressed: () {
    //                     setState(() {
    //                       _toHex = !_toHex;
    //                     });
    //                   },
    //                   icon: const Icon(Icons.refresh))
    //               // ElevatedButton(
    //               //     style: ButtonStyle(
    //               //         backgroundColor:
    //               //             MaterialStateProperty.all(AppColors.background)),
    //               //     onPressed: () {
    //               //       keysExistDialog(
    //               //         Nostr.instance.keysService
    //               //             .encodePublicKeyToNpub(Keys.publicKey),
    //               //         Nostr.instance.keysService
    //               //             .encodePrivateKeyToNsec(Keys.privateKey),
    //               //       );
    //               //     },
    //               //     child: const Text(
    //               //       'Keys',
    //               //     ),
    //               //   )
    //               : Row(
    //                   children: [
    //                     ElevatedButton(
    //                       style: ButtonStyle(
    //                           backgroundColor: MaterialStateProperty.all(
    //                               AppColors.background)),
    //                       onPressed: () {
    //                         modalBottomSheet();
    //                       },
    //                       child: const Text(
    //                         'Generate Keys',
    //                       ),
    //                     ),
    //                     SizedBox(width: 100),
    //                     ElevatedButton(
    //                       style: ButtonStyle(
    //                           backgroundColor: MaterialStateProperty.all(
    //                               AppColors.background)),
    //                       onPressed: () {
    //                         Navigator.pushNamed(context, '/login').then((_) {
    //                           initState();
    //                         });
    //                       },
    //                       child: const Text(
    //                         'Login',
    //                       ),
    //                     ),
    //                   ],
    //                 ),
    //           Keys.keysExist
    //               ? Row(
    //                   children: [
    //                     IconButton(
    //                         onPressed: () {
    //                           deleteKeysDialog();
    //                         },
    //                         icon: const Icon(Icons.delete)),
    //                   ],
    //                 )
    //               : Container(),
    //         ],
    //       ),
    //     )
    //   ],
    // );
  }

  Form FormKeys() {
    return Form(
      child: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Column(
          children: [
            TextFormField(
              controller: privateKeyInput,
              // _toHex ? widget.hexPriv : widget.nsecEncoded,

              decoration: const InputDecoration(
                labelText: 'Private Key',
                border: OutlineInputBorder(),
              ),
              maxLength: 64,
            ),
            const SizedBox(
              height: 20,
            ),
            TextFormField(
              controller: publicKeyInput,
              //  _toHex ? widget.hexPub : widget.npubEncoded,
              decoration: const InputDecoration(
                labelText: 'Public Key',
                border: OutlineInputBorder(),
              ),
            ),
            const SizedBox(
              height: 40,
            ),
            TextFormField(
              decoration: const InputDecoration(
                labelText: 'Relay',
                border: OutlineInputBorder(),
              ),
            ),
          ],
        ),
      ),
    );
  }

  void modalBottomSheet() {
    showModalBottomSheet(
        context: context,
        builder: (BuildContext context) {
          return KeysOptionModalBottomSheet(
            generateNewKeyPressed: () {
              final currentContext = context;
              generateNewKeys().then(
                (keysGenerated) {
                  if (keysGenerated) {
                    ScaffoldMessenger.of(currentContext).showSnackBar(
                        MessageSnackBar(label: 'Keys Generated!'));
                  }
                },
              );
              Navigator.pop(context);
            },
          );
        });
  }

  void keysExistDialog(String npubEncode, String nsecEncode) async {
    await showDialog(
      context: context,
      builder: ((context) {
        return KeysExistDialog(
          npubEncoded: npubEncode,
          nsecEncoded: nsecEncode,
          hexPriv: Keys.privateKey,
          hexPub: Keys.publicKey,
        );
      }),
    );
  }

  void deleteKeysDialog() async {
    await showDialog(
      context: context,
      builder: ((context) {
        return DeleteKeysDialog(
          onNoPressed: () {
            Navigator.pop(context);
          },
          onYesPressed: () {
            final currentContext = context;
            _deleteKeysStorage().then((_) {
              if (!Keys.keysExist) {
                ScaffoldMessenger.of(currentContext).showSnackBar(
                  MessageSnackBar(
                    label: 'Keys successfully deleted!',
                    isWarning: true,
                  ),
                );
              }
            });
            Navigator.pop(context);
          },
        );
      }),
    );
  }
}