import { reaction, makeAutoObservable, onBecomeObserved, onBecomeUnobserved } from 'mobx';
import { cryptography } from '@liskhq/lisk-client';
import { passphrase } from '@liskhq/lisk-client';
import { getNodeInfo } from '../api/node';
import { fetchWrapper } from '../shared/fetchWrapper';
import { labelMap } from '../shared/labelMap';
import { generateSvgAvatar } from '../images/GenerateOnboardingSvg/GenerateSvg';
import {decryptedData} from "../utils/decryptedData";
import { encryptAccountData, generateTransaction, hashAccountData } from '../utils/Utils';

class Store {
  _accountData = [];

  _passPhrase = '';

  _nodeInfo = {};

  _keysArray = [];

  _sharedData = [];

  _transactionsInfo = [];

  _accountInfo = {};

  _loading = false;

  _tempTransactions = [];

  constructor() {
    makeAutoObservable(this, {});

    reaction(
      () => this.keysArray,
      () => this.fetchSharedData()
    );
    reaction(
      () => this.address,
      () => this.fetchAccountInfo()
    );
    onBecomeObserved(this, 'decryptedAccountData', () => this.fetchNewAccountData());
    onBecomeObserved(this, 'sharedData', () => this.fetchKeysArray());
    onBecomeUnobserved(this, 'sharedData', () => this.unobservedSharedData());
    onBecomeObserved(this, 'transactionsInfo', () => this.fetchTransactionsInfo());
    onBecomeUnobserved(this, 'transactionsInfo', () => this.unobservedTransactionsInfo());

    this.fetchNodeInfo();
  }

  fetchNewAccountData() {
    getNodeInfo()
    .then((info) => {
      this.fetchNodeInfoSuccess(info);
      fetchWrapper
      .getAuth('data/private', {
        networkIdentifier: this.nodeInfo.networkIdentifier,
        lastBlockID: this.nodeInfo.lastBlockID,
      })
      .then((res) => this.accountDataFetchChange(res))
      .catch((err) => this.fetchError(err));
    })
    .catch((err) => this.fetchError(err));
  }

  fetchAccountInfo() {
    fetchWrapper
    .get(`accounts/${this.address}`)
    .then((res) => this.fetchAccountInfoSuccess(res))
    .catch((err) => this.fetchError(err));
  }

  fetchKeysArray() {
    getNodeInfo()
    .then((info) => {
      this.fetchNodeInfoSuccess(info);
      fetchWrapper
      .getAuth('data/shared/', {
        networkIdentifier: this.nodeInfo.networkIdentifier,
        lastBlockID: this.nodeInfo.lastBlockID,
      })
      .then((res) => this.keysArrayFetchChange(res));
    })
    .catch((err) => this.fetchError(err));
  }

  fetchTransactionsInfo() {
    fetchWrapper
    .get(`account/transactions/${this.address}`, {
      networkIdentifier: this.nodeInfo.networkIdentifier,
      lastBlockID: this.nodeInfo.lastBlockID,
    })
    .then((res) => this.saveInfoTransactions(res))
    .catch((err) => this.fetchError(err));
  }

  fetchTempTransactions() {
    fetchWrapper
      .get('node/transactions')
      .then((res) => this.fetchTempTransactionsSuccess(res))
      .catch((err) => this.fetchError(err));
  }

  fetchPassPhrase() {
    this._passPhrase = sessionStorage.getItem('passPhrase') || '';
  }

  fetchSharedData() {
    this._keysArray.forEach((elem) =>
      fetchWrapper
      .get(`data/shared/${elem}`)
      .then((res) => this.changeSharedData(res))
      .catch((err) => this.fetchError(err))
    );
  }

  fetchNodeInfo() {
    getNodeInfo()
    .then((info) => this.fetchNodeInfoSuccess(info))
    .catch((err) => this.fetchError(err));
  }

  pushAccountData(data = this.accountData) {
    fetchWrapper
    .postAuth(
      'data/private',
      {
        networkIdentifier: this.nodeInfo.networkIdentifier,
        lastBlockID: this.nodeInfo.lastBlockID,
      },
      [...encryptAccountData(data, this.passPhrase, this.pubKey)]
    )
    .then(() => this.fetchNewAccountData())
    .catch((err) => this.fetchError(err));
  }

  pushAccountDataToBlockchain(data = this.decryptedAccountData) {
    const [removed, changed] = hashAccountData(data, this.decryptedAccountData, this.accountFeaturesMap);
    const builder = generateTransaction(
      BigInt(this.accountInfo?.sequence?.nonce || 0),
      this.addressAndPubKey.publicKey,
      this.nodeInfo.networkIdentifier,
      this.passPhrase
    );

    let signedTx = null;

    if (removed.length !== 0) signedTx = builder.remove(removed);

    if (changed.length !== 0) signedTx = builder.update(changed);
    if (signedTx) {
      fetchWrapper.post('transactions', {}, signedTx)
      .then(() => this.fetchTempTransactions())
      .catch((err) => this.fetchError(err));
      this.accountInfo.sequence.nonce++;
    }
  }

  generatePassPhrase() {
    this._passPhrase = passphrase.Mnemonic.generateMnemonic();
    sessionStorage.setItem('passPhrase', this._passPhrase);
  }

  savePastPassPhrase(phrase) {
    this._passPhrase = phrase;
    sessionStorage.setItem('passPhrase', this._passPhrase);
  }

  unobservedTransactionsInfo() {
    this._transactionsInfo = [];
  }

  unobservedSharedData() {
    this._sharedData = [];
  }

  changeSharedData(incomingData) {
    this._sharedData.push({
      data: incomingData.data,
    });
  }

  saveDataRegistration(data) {
    this._accountData = data;
  }

  clearDataRegistration() {
    this._accountData = [];
  }

  saveInfoTransactions(transaction) {
    this._transactionsInfo = transaction.data;
  }

  accountDataFetchChange(res) {
    if (res.data) {
      this._accountData = res.data;
    }
    this.fetchTempTransactions();
  }

  keysArrayFetchChange(res) {
    this._keysArray = res.data;
  }

  fetchNodeInfoSuccess(info) {
    this._nodeInfo = info.data;
    this.fetchPassPhrase();
  }

  fetchAccountInfoSuccess(res) {
    this._accountInfo = res.data;
    if (this.accountInfo?.sequence?.nonce)
      this.accountInfo.sequence.nonce = parseInt(this.accountInfo.sequence.nonce) || 0;
  }

  fetchTempTransactionsSuccess(res) {
    this._tempTransactions = res.data;
  }

  fetchError(err) {
    console.log(err);
  }

  get sharedData() {
    return this._sharedData.map((elem) => ({
      data: elem.data.map((item) => ({
        label: labelMap[item.label],
        value: item.value,
      })),
    }));
  }

  get transactionsInfo() {
    return this._transactionsInfo.map((item) => {
      return {
        id: item.id,
        sender_avatar: item.asset.recipientAddress && generateSvgAvatar(item.senderPublicKey),
        avatar_size: 24,
        transaction: item.asset.features.map((asset) => {
          return {
            transaction_id: item.id,
            address:
              item.asset.recipientAddress &&
              cryptography.bufferToHex(
                cryptography.getAddressFromPublicKey(cryptography.hexToBuffer(item.senderPublicKey))
              ),
            value: asset.value,
            label: labelMap[asset.label] || asset.label,
          };
        }),
      };
    });
  }
  get decryptedAccountData() {
    return decryptedData(this._accountData, this.accountFeatures, this.passPhrase, this.pubKey, this.processedFeatures)
  }

  get firstName() {
    return this.decryptedAccountData.find((item) => item.key === 'firstname')?.value;
  }

  get lastName() {
    return this.decryptedAccountData.find((item) => item.key === 'secondname')?.value;
  }

  get accountName() {
    return this.firstName || this.lastName || this.pubKey;
  }

  get keysArray() {
    return this._keysArray;
  }

  get passPhrase() {
    return this._passPhrase;
  }

  get accountData() {
    return this._accountData;
  }

  get accountInfo() {
    return this._accountInfo;
  }

  get nodeInfo() {
    return this._nodeInfo;
  }

  get addressAndPubKey() {
    return cryptography.getAddressAndPublicKeyFromPassphrase(this.passPhrase);
  }

  get pubKey() {
    return this.addressAndPubKey.publicKey.toString('hex');
  }

  get address() {
    return this.addressAndPubKey.address.toString('hex');
  }

  get tokenKey() {
    const stringToSign = this.nodeInfo.networkIdentifier + this.nodeInfo.lastBlockID;
    if (!stringToSign) return '';
    const sign = cryptography.signDataWithPassphrase(Buffer.from(stringToSign, 'hex'), this.passPhrase).toString('hex');
    return this.pubKey + ':' + sign;
  }

  get accountIdentity() {
    return this.accountInfo?.identity || {};
  }

  get accountFeatures() {
    return this.accountIdentity?.features || [];
  }

  get accountFeaturesMap() {
    return this.accountFeatures.reduce(
      (acc, item) => ({
        ...acc,
        [item.label]: item.value,
      }),
      {}
    );
  }

  get loading() {
    return this._loading;
  }

  set loading(value) {
    this._loading = value;
  }

  get tempTransactions() {
    return this._tempTransactions;
  }

  get processedFeatures() {
    return this.tempTransactions
    .filter(item => item.senderPublicKey === this.pubKey)
    .reduce((acc, item) => {
      const { features } = item.asset;
      return {
        ...acc,
        ...features.reduce((obj, feature) => ({...obj, [feature.label]: true}), {})
      }
    }, {})
  }
}

export const store = new Store();