ihm_client/src/services/service.ts

// import { WebSocketClient } from '../websockets';
import { INotification } from '~/models/notification.model';
import { IProcess } from '~/models/process.model';
// import Database from './database';
import { initWebsocket, sendMessage } from '../websockets';
import { ApiReturn, Device, HandshakeMessage, Member, Process, RoleDefinition, SecretsStore, UserDiff } from '../../pkg/sdk_client';
import ModalService from './modal.service';
import Database from './database.service';
import { storeData, retrieveData } from './storage.service';
import { BackUp } from '~/models/backup.model';

export const U32_MAX = 4294967295;

const storageUrl = `/storage`;
const BOOTSTRAPURL = [`https://demo.4nkweb.com/ws/`];
const DEFAULTAMOUNT = 1000n;

export default class Services {
  private static initializing: Promise<Services> | null = null;
  private static instance: Services;
  private currentProcess: string | null = null;
  private pendingUpdates: any | null = null;
  private currentUpdateMerkleRoot: string | null = null;
  private localAddress: string | null = null;
  private pairedAddresses: string[] = [];
  private sdkClient: any;
  private processes: IProcess[] | null = null;
  private notifications: any[] | null = null;
  private subscriptions: { element: Element; event: string; eventHandler: string }[] = [];
  private database: any;
  private routingInstance!: ModalService;
  private relayAddresses: { [wsurl: string]: string } = {};
  private membersList: Record<any, Process> = {};
  // Private constructor to prevent direct instantiation from outside
  private constructor() {}

  // Method to access the singleton instance of Services
  public static async getInstance(): Promise<Services> {
    if (Services.instance) {
      return Services.instance;
    }

    if (!Services.initializing) {
      Services.initializing = (async () => {
        const instance = new Services();
        await instance.init();
        instance.routingInstance = await ModalService.getInstance();
        return instance;
      })();
    }

    console.log('initializing services');
    Services.instance = await Services.initializing;
    Services.initializing = null; // Reset for potential future use
    return Services.instance;
  }

  public async init(): Promise<void> {
    this.notifications = this.getNotifications();
    this.sdkClient = await import('../../pkg/sdk_client');
    this.sdkClient.setup();
    for (const wsurl of Object.values(BOOTSTRAPURL)) {
      this.updateRelay(wsurl, '');
    }
    await this.connectAllRelays();
  }

  /**
   * Calls `this.addWebsocketConnection` for each `wsurl` in relayAddresses.
   */
  public async connectAllRelays(): Promise<void> {
      for (const wsurl of Object.keys(this.relayAddresses)) {
          try {
              console.log(`Connecting to: ${wsurl}`);
              await this.addWebsocketConnection(wsurl);
              console.log(`Successfully connected to: ${wsurl}`);
          } catch (error) {
              console.error(`Failed to connect to ${wsurl}:`, error);
          }
      }
  }

  public async addWebsocketConnection(url: string): Promise<void> {
    console.log('Opening new websocket connection');
    await initWebsocket(url);
  }

  /**
   * Add or update a key/value pair in relayAddresses.
   * @param wsurl - The WebSocket URL (key).
   * @param spAddress - The SP Address (value).
   */
  public updateRelay(wsurl: string, spAddress: string): void {
      this.relayAddresses[wsurl] = spAddress;
      console.log(`Updated: ${wsurl} -> ${spAddress}`);
  }

  /**
   * Retrieve the spAddress for a given wsurl.
   * @param wsurl - The WebSocket URL to look up.
   * @returns The SP Address if found, or undefined if not.
   */
  public getSpAddress(wsurl: string): string | undefined {
      return this.relayAddresses[wsurl];
  }

  /**
   * Get all key/value pairs from relayAddresses.
   * @returns An array of objects containing wsurl and spAddress.
   */
  public getAllRelays(): { wsurl: string; spAddress: string }[] {
      return Object.entries(this.relayAddresses).map(([wsurl, spAddress]) => ({
          wsurl,
          spAddress,
      }));
  }

  /**
   * Print all key/value pairs for debugging.
   */
  public printAllRelays(): void {
      console.log("Current relay addresses:");
      for (const [wsurl, spAddress] of Object.entries(this.relayAddresses)) {
          console.log(`${wsurl} -> ${spAddress}`);
      }
  }

  public isPaired(): boolean {
    try {
      return this.sdkClient.is_paired();
    } catch (e) {
      throw new Error(`isPaired ~ Error: ${e}`);
    }
  }

  public async unpairDevice(): Promise<void> {
    try {
      this.sdkClient.unpair_device();
      const newDevice = this.dumpDeviceFromMemory();
      await this.saveDeviceInDatabase(newDevice);
    } catch (e) {
      throw new Error(`Failed to unpair device: ${e}`);
    }
  }

  public async getSecretForAddress(address: string): Promise<string | null> {
    const db = await Database.getInstance();
    return await db.getObject('shared_secrets', address);
  }

  public async getAllSecrets(): Promise<SecretsStore> {
    const db = await Database.getInstance();
    const sharedSecrets = await db.dumpStore('shared_secrets');
    const unconfirmedSecrets = await db.dumpStore('unconfirmed_secrets'); // keys are numeric values

    const secretsStore = {
      shared_secrets: sharedSecrets,
      unconfirmed_secrets: Object.values(unconfirmedSecrets),
    };

    return secretsStore;
  }

  public async getAllDiffs(): Promise<Record<string, UserDiff>> {
    const db = await Database.getInstance();
    return await db.dumpStore('diffs');
  }

  public async getDiffByValue(value: string): Promise<UserDiff | null> {
    const db = await Database.getInstance();
    const store = 'diffs';
    const res = await db.getObject(store, value);
    return res;
  }

  public async checkConnections(members: Member[]): Promise<void> {
    const memberPromises = members.map(async (member) => {
      const addressPromises = member.sp_addresses.map(async (address) => {
        const sharedSecret = await this.getSecretForAddress(address);
        if (!sharedSecret) {
          const connectMemberResult = await this.connectMember([{ sp_addresses: [address] }]);
          await this.handleApiReturn(connectMemberResult);
        }
      });

      await Promise.all(addressPromises);
    });

    await Promise.all(memberPromises);
  }

  public async connectMember(members: Member[]): Promise<ApiReturn> {
    if (members.length === 0) {
      throw new Error('Trying to connect to empty members list');
    }

    const members_str = members.map((member) => JSON.stringify(member));

    try {
      // Ensure the amount is available before proceeding
      await this.ensureSufficientAmount();
      return this.sdkClient.create_connect_transaction(members_str, 1);
    } catch (e) {
      console.error('Failed to connect member:', e);
      throw e;
    }
  }

  private async ensureSufficientAmount(): Promise<void> {
    let availableAmt = this.getAmount();
    const target: BigInt = DEFAULTAMOUNT * BigInt(2);

    if (availableAmt < target) {
      const faucetMsg = this.createFaucetMessage();
      this.sendFaucetMessage(faucetMsg);

      await this.waitForAmount(target);
    }
  }

  private async waitForAmount(target: BigInt): Promise<BigInt> {
    let attempts = 3;

    while (attempts > 0) {
      const amount = this.getAmount();
      if (amount >= target) {
        return amount;
      }

      attempts--;
      if (attempts > 0) {
        await new Promise((resolve) => setTimeout(resolve, 1000)); // Wait for 1 second
      }
    }

    throw new Error('Amount is still 0 after 3 attempts');
  }

  public async createMessagingProcess(otherMembers: Member[],relayAddress: string, feeRate: number): Promise<ApiReturn> {
    if (!this.isPaired()) {
      throw new Error('Device not paired');
    }
    const me = await this.getMemberFromDevice();
    if (!me) {
      throw new Error('No paired member in device');
    }
    const allMembers: Member[] = otherMembers;
    allMembers.push({ sp_addresses: me });
    const meAndOne = [{ sp_addresses: me }, otherMembers.pop()!];
    const everyOneElse = otherMembers;
    const messagingTemplate = {
      description: 'messaging',
      roles: {
        public: {
          members: allMembers,
          validation_rules: [
            {
              quorum: 0.0,
              fields: ['description', 'roles'],
              min_sig_member: 0.0,
            },
          ],
          storages: [storageUrl]
        },
        owner: {
          members: meAndOne,
          validation_rules: [
            {
              quorum: 1.0,
              fields: ['description', 'roles'],
              min_sig_member: 1.0,
            },
          ],
          storages: [storageUrl]
        },
        users: {
          members: everyOneElse,
          validation_rules: [
            {
              quorum: 0.0,
              fields: ['description', 'roles'],
              min_sig_member: 0.0,
            },
          ],
          storages: [storageUrl]
        },
      },
    };
    try {
      return this.sdkClient.create_new_process(JSON.stringify(messagingTemplate), null, relayAddress, feeRate); 
    } catch (e) {
      throw new Error(`Creating process failed: ${e}`);
    }
  }

  public async createPairingProcess(pairWith: string[], relayAddress: string, feeRate: number): Promise<ApiReturn> {
    if (this.sdkClient.is_paired()) {
      throw new Error('Device already paired');
    }
    const myAddress: string = this.sdkClient.get_address();
    pairWith.push(myAddress);
    const newKey = this.sdkClient.get_new_keypair();
    const pairingTemplate = {
      description: 'pairing',
      roles: {
        owner: {
          members: [{ sp_addresses: pairWith }],
          validation_rules: [
            {
              quorum: 1.0,
              fields: ['description', 'roles', 'session_privkey', 'session_pubkey', 'key_parity'],
              min_sig_member: 1.0,
            },
          ],
          storages: [storageUrl]
        },
      },
      session_privkey: newKey['private_key'],
      session_pubkey: newKey['x_only_public_key'],
      key_parity: newKey['key_parity'],
    };
    try {
      return this.sdkClient.create_new_process(JSON.stringify(pairingTemplate), null, relayAddress, feeRate); 
    } catch (e) {
      throw new Error(`Creating process failed:, ${e}`);
    }
  }

  public async createDmProcess(
      otherMember: string[], 
      parentProcess: string,
  ): Promise<ApiReturn> {
      try {
          console.log('🚀 Début createMessagingProcess');
          console.log('📝 Parent Process ID:', parentProcess);
          console.log('👥 Other Member:', otherMember);

          if (!this.isPaired()) {
              throw new Error('Device not paired');
          }

          const myAddresses = await this.getMemberFromDevice();
          console.log('🔑 Mes adresses:', myAddresses);

          if (!myAddresses) {
              throw new Error('No paired member found');
          }

          const messagingTemplate = {
              parent_id: parentProcess,
              message: '',
              roles: {
                  dm: {
                      members: [
                          { sp_addresses: myAddresses },
                          { sp_addresses: otherMember }
                      ],
                      validation_rules: [
                          {
                              quorum: 0.01,
                              fields: ['message'],
                              min_sig_member: 0.01,
                          },
                      ],
                      storages: [storageUrl]
                  }
              }
          };

          console.log('📋 Template final:', JSON.stringify(messagingTemplate, null, 2));
          console.log('👥 Création du process message comme enfant de:', parentProcess);

          const relayAddress = this.getAllRelays()[0]['spAddress'];
          const feeRate = 1;
          const initState = JSON.stringify(messagingTemplate);

          const result = this.sdkClient.create_new_process(
              JSON.stringify(messagingTemplate), 
              null,
              relayAddress, 
              feeRate
          );
          // console.log('✅ Process message créé:', result);

          return result;
      } catch (e) {
          console.error('❌ Erreur:', e);
          throw e;
      }
  }

  // Create prd update for current process and update
  public createPrdUpdate(processId: string, stateId: string): ApiReturn {
    try {
      return this.sdkClient.create_update_message(processId, stateId);
    } catch (e) {
      throw new Error(`Failed to create prd update: ${e}`);
    }
  }

  public createPrdResponse(pcdMerkleRoot: string): ApiReturn {
    if (!this.currentProcess) {
      throw new Error('No current process defined');
    }

    try {
      return this.sdkClient.create_response_prd(this.currentProcess, pcdMerkleRoot);
    } catch (e) {
      throw e;
    }
  }

  public approveChange(processId: string, stateId: string): ApiReturn {
    try {
      return this.sdkClient.validate_state(processId, stateId);
    } catch (e) {
      throw new Error(`Failed to create prd response: ${e}`);
    }
  }

  public rejectChange(): ApiReturn {
    if (!this.currentProcess || !this.currentUpdateMerkleRoot) {
      throw new Error('No current process and/or current update defined');
    }

    try {
      return this.sdkClient.refuse_state(this.currentProcess, this.currentUpdateMerkleRoot);
    } catch (e) {
      throw new Error(`Failed to create prd response: ${e}`);
    }
  }

  async resetDevice() {
    this.sdkClient.reset_device();

    // Clear all stores
    const db = await Database.getInstance();
    await db.clearStore('wallet');
    await db.clearStore('shared_secrets');
    await db.clearStore('unconfirmed_secrets');
    await db.clearStore('processes');
    await db.clearStore('diffs');
  }

  async sendNewTxMessage(message: string) {
    sendMessage('NewTx', message);
  }

  async sendCommitMessage(message: string) {
    sendMessage('Commit', message);
  }

  async sendCipherMessages(ciphers: string[]) {
    for (let i = 0; i < ciphers.length; i++) {
      const cipher = ciphers[i];
      sendMessage('Cipher', cipher);
    }
  }

  sendFaucetMessage(message: string): void {
    sendMessage('Faucet', message);
  }

  async parseCipher(message: string) {
    try {
      // console.log('parsing new cipher');
      const apiReturn = this.sdkClient.parse_cipher(message);
      console.log('🚀 ~ Services ~ parseCipher ~ apiReturn:', apiReturn);
      await this.handleApiReturn(apiReturn);

      // Device 1 wait Device 2
      const waitingModal = document.getElementById('waiting-modal');
      if (waitingModal) {
        this.device2Ready = true;
      }

    } catch (e) {
      console.error(`Parsed cipher with error: ${e}`);
    }
    // await this.saveCipherTxToDb(parsedTx)
  }

  async parseNewTx(tx: string) {
    try {
      const parsedTx = this.sdkClient.parse_new_tx(tx, 0);
      if (parsedTx) {
        try {
          await this.handleApiReturn(parsedTx);
          const newDevice = this.dumpDeviceFromMemory();
          await this.saveDeviceInDatabase(newDevice);
        } catch (e) {
          console.error('Failed to update device with new tx');
        }
      }
    } catch (e) {
      console.trace(e);
    }
  }

  public async tryFetchDiffValue(diffs: UserDiff[]): Promise<[UserDiff[], Record<string, string>]>{
    if (diffs.length === 0) {
      return [[], {}];
    }

    // We check if we have the value in diffs
    let retrievedValues: Record<string, string> = {};
    for (const diff of diffs) {
      // Check if `new_value` is missing
      if (diff.new_value === null) {
        const hash = diff.value_commitment;
        if (!hash) {
          console.error('No commitment for diff');
        }
        try {
          const res = await this.fetchValueFromStorage(hash); 
          if (!res) {
            console.error('Failed to fetch value for hash', hash);
          } else {
            diff.new_value = res['value'];
            retrievedValues[hash] = res['value'];
          }
        } catch (error) {
          console.error(`Failed to fetch new_value for diff: ${JSON.stringify(diff)}`, error);
        }
      }
    }

    return [diffs, retrievedValues];
  }

  public async handleApiReturn(apiReturn: ApiReturn) {
    if (apiReturn.new_tx_to_send && apiReturn.new_tx_to_send.transaction.length != 0) {
      await this.sendNewTxMessage(JSON.stringify(apiReturn.new_tx_to_send));
    }

    if (apiReturn.secrets) {
      const unconfirmedSecrets = apiReturn.secrets.unconfirmed_secrets;
      const confirmedSecrets = apiReturn.secrets.shared_secrets;

      const db = await Database.getInstance();
      for (const secret of unconfirmedSecrets) {
        await db.addObject({
          storeName: 'unconfirmed_secrets',
          object: secret,
          key: null,
        });
      }
      const entries = Object.entries(confirmedSecrets).map(([key, value]) => ({ key, value }));
      for (const entry of entries) {
        try {
          await db.addObject({
            storeName: 'shared_secrets',
            object: entry.value,
            key: entry.key,
          });
        } catch (e) {
          throw e;
        }

        // We don't want to throw an error, it could simply be that we registered directly the shared secret
        // this.removeUnconfirmedSecret(entry.value);
      }
    }

    setTimeout(async () => {
      if (apiReturn.updated_process) {
        const updatedProcess = apiReturn.updated_process;

        const processId: string = updatedProcess.commitment_tx;

        // Save process to storage
        try {
          await this.saveProcess(processId, updatedProcess.current_process);
        } catch (e) {
          throw e;
        }

        const isPaired = this.isPaired();
        
        if (updatedProcess.new_diffs.length != 0) {
          const [updatedDiffs, retrievedValues] = await this.tryFetchDiffValue(updatedProcess.new_diffs);
          if (Object.entries(retrievedValues).length != 0) {
            const stateId = updatedDiffs[0].state_id;
            const processId = updatedDiffs[0].process_id;
            // We update the process with the value we retrieved
            const hashToValues = JSON.stringify(retrievedValues);
            const apiReturn = this.sdkClient.update_process_state(processId, stateId, hashToValues);
            await this.handleApiReturn(apiReturn);
          } else {
            try {
              await this.saveDiffs(updatedDiffs);
            } catch (e) {
              throw e;
            }
            if (!isPaired) {
              await this.openPairingConfirmationModal(updatedDiffs);
            }
          }
        }


        if (updatedProcess.modified_state) {
          const responsePrdReturn = this.sdkClient.create_response_prd(processId, updatedProcess.modified_state);
          await this.handleApiReturn(responsePrdReturn);
        }
      }

      if (apiReturn.commit_to_send) {
        const commit = apiReturn.commit_to_send;
        await this.sendCommitMessage(JSON.stringify(commit));
      }

      if (apiReturn.ciphers_to_send && apiReturn.ciphers_to_send.length != 0) {
        await this.sendCipherMessages(apiReturn.ciphers_to_send);
      }
    }, 0);
  }

  public async openPairingConfirmationModal(diffs: UserDiff[]) {
    const rolesDiff = diffs.find((diff) => diff.field === 'roles');
    if (!rolesDiff) {
      throw new Error('Pairing process must have roles');
    }
    const processId = rolesDiff.process_id;
    const stateId = rolesDiff.state_id;
    try {
      await this.routingInstance.openPairingConfirmationModal(rolesDiff.new_value, processId, stateId);
    } catch (e) {
      throw new Error(`${e}`);
    }
  }

  pairDevice(spAddressList: string[], pairingProcess: string) {
    try {
      this.sdkClient.pair_device(pairingProcess, spAddressList);
    } catch (e) {
      throw new Error(`Failed to pair device: ${e}`);
    }
  }

  public getAmount(): BigInt {
    const amount = this.sdkClient.get_available_amount();
    return amount;
  }

  async getDeviceAddress() {
    return await this.sdkClient.get_address();
  }

  public dumpDeviceFromMemory(): string {
    try {
      return this.sdkClient.dump_device();
    } catch (e) {
      throw new Error(`Failed to dump device: ${e}`);
    }
  }

  async saveDeviceInDatabase(device: any): Promise<void> {
    const db = await Database.getInstance();
    const walletStore = 'wallet';
    try {
      const prevDevice = await this.getDeviceFromDatabase();
      if (prevDevice) {
        await db.deleteObject(walletStore, "1");
      }
      await db.addObject({
        storeName: walletStore,
        object: { pre_id: '1', device },
        key: null,
      });
    } catch (e) {
      console.error(e);
    }
  }

  async getDeviceFromDatabase(): Promise<string | null> {
    const db = await Database.getInstance();
    const walletStore = 'wallet';
    try {
      const dbRes = await db.getObject(walletStore, '1');
      if (dbRes) {
        const wallet = dbRes['device'];
        return wallet;
      } else {
        return null;
      }
    } catch (e) {
      throw new Error(`Failed to retrieve device from db: ${e}`);
    }
  }

  async getMemberFromDevice(): Promise<string[] | null> {
    try {
      const device = await this.getDeviceFromDatabase();
      if (device) {
        const parsed: Device = JSON.parse(device);
        const pairedMember = parsed['paired_member']; 
        return pairedMember.sp_addresses;
      } else {
        return null;
      }
    } catch (e) {
      throw new Error(`Failed to retrieve paired_member from device: ${e}`);
    }
  }

  isChildRole(parent: any, child: any): boolean {
    try {
      this.sdkClient.is_child_role(JSON.stringify(parent), JSON.stringify(child));
    } catch (e) {
      console.error(e);
      return false;
    }

    return true;
  }

  rolesContainsUs(roles: any): boolean {
    try {
      this.sdkClient.roles_contains_us(JSON.stringify(roles));
    } catch (e) {
      console.error(e);
      return false;
    }

    return true;
  }

  rolesContainsMember(roles: any, member: string[]): boolean {
    try {
      this.sdkClient.roles_contains_member(JSON.stringify(roles), member);
    } catch (e) {
      console.error(e);
      return false;
    }

    return true;
  }

  async dumpWallet() {
    const wallet = await this.sdkClient.dump_wallet();
    console.log('🚀 ~ Services ~ dumpWallet ~ wallet:', wallet);
    return wallet;
  }

  public createFaucetMessage() {
    const message = this.sdkClient.create_faucet_msg();
    console.log('🚀 ~ Services ~ createFaucetMessage ~ message:', message);
    return message;
  }

  async createNewDevice() {
    let spAddress = '';
    try {
      spAddress = await this.sdkClient.create_new_device(0, 'signet');
      const device = this.dumpDeviceFromMemory();
      console.log('🚀 ~ Services ~ device:', device);
      await this.saveDeviceInDatabase(device);
    } catch (e) {
      console.error('Services ~ Error:', e);
    }

    return spAddress;
  }

  restoreDevice(device: string) {
    try {
      this.sdkClient.restore_device(device);
      const spAddress = this.sdkClient.get_address();
    } catch (e) {
      console.error(e);
    }
  }

  public async saveProcess(commitedIn: string, process: Process) {
    const db = await Database.getInstance();
    try {
      await db.addObject({
        storeName: 'processes',
        object: process,
        key: commitedIn,
      });
    } catch (e) {
      throw new Error(`Failed to save process: ${e}`);
    }

    // We check how many copies in storage nodes
    // We check the storage nodes in the process itself
    // this.sdkClient.get_storages(commitedIn);
    const storages = [storageUrl];

    for (const state of process.states) {
      if (state.state_id === "") {
        continue;
      }
      if (!state.encrypted_pcd) {
        console.warn('Empty encrypted pcd, skipping...');
        continue;
      } 
      for (const [field, hash] of Object.entries(state.pcd_commitment)) { 
        // get the encrypted value with the field name
        const value = state.encrypted_pcd[field]; 
        await storeData(storages, hash, value, null);
      }
    }
  }

  public async fetchValueFromStorage(hash: string): Promise<any | null> {
    const storages = [storageUrl];

    return await retrieveData(storages, hash);
  }

  public async saveDiffs(diffs: UserDiff[]) {
    const db = await Database.getInstance();
    try {
      for (const diff of diffs) {
        await db.addObject({
          storeName: 'diffs',
          object: diff,
          key: null,
        });
      }
    } catch (e) {
      throw new Error(`Failed to save process: ${e}`);
    }
  }

  public async getProcess(commitedIn: string): Promise<Process> {
    const db = await Database.getInstance();
    return await db.getObject('processes', commitedIn);
  }

  public async getProcesses(): Promise<Record<string, Process>> {
    const db = await Database.getInstance();

    const processes: Record<string, Process> = await db.dumpStore('processes');
    return processes;
  }

  public async getChildrenOfProcess(processId: string): Promise<string[]> {
    const processes = await this.getProcesses();

    const res = [];
    for (const [hash, process] of Object.entries(processes)) {
      const firstState = process.states[0];
      const pcdCommitment = firstState['pcd_commitment'];
      try {
        const parentIdHash = pcdCommitment['parent_id'];
        const diff = await this.getDiffByValue(parentIdHash);
        if (diff && diff['new_value'] === processId) {
          res.push(JSON.stringify(process));
        }
      } catch (e) {
        continue;
      }
    }

    return res;
  }

  public async restoreProcessesFromBackUp(processes: Record<string, Process>) {
    const db = await Database.getInstance();
    for (const [commitedIn, process] of Object.entries(processes)) {
      await db.addObject({ storeName: 'processes', object: process, key: commitedIn});
    }

    await this.restoreProcessesFromDB();
  }

  // Restore process in wasm with persistent storage
  public async restoreProcessesFromDB() {
    const db = await Database.getInstance();
    try {
      const processes: Record<string, Process> = await db.dumpStore('processes');
      if (processes && Object.keys(processes).length != 0) {
        console.log(`Restoring ${Object.keys(processes).length} processes`);
        this.sdkClient.set_process_cache(JSON.stringify(processes));
      } else {
        console.log('No processes to restore!');
      }
    } catch (e) {
      throw e;
    }
  }

  public async clearSecretsFromDB() {
    const db = await Database.getInstance();
    try {
      await db.clearStore('shared_secrets');
      await db.clearStore('unconfirmed_secrets');
    } catch (e) {
      console.error(e);
    }
  }

  public async restoreSecretsFromBackUp(secretsStore: SecretsStore) {
    const db = await Database.getInstance();

    for (const secret of secretsStore.unconfirmed_secrets) {
      await db.addObject({
        storeName: 'unconfirmed_secrets',
        object: secret,
        key: null,
      });
    }
    const entries = Object.entries(secretsStore.shared_secrets).map(([key, value]) => ({ key, value }));
    for (const entry of entries) {
      await db.addObject({
        storeName: 'shared_secrets',
        object: entry.value,
        key: entry.key,
      });
    }

    // Now we can transfer them to memory 
    await this.restoreSecretsFromDB();
  }

  public async restoreSecretsFromDB() {
    const db = await Database.getInstance();
    try {
      const sharedSecrets: Record<string, string> = await db.dumpStore('shared_secrets');
      const unconfirmedSecrets = await db.dumpStore('unconfirmed_secrets');
      const secretsStore = {
        shared_secrets: sharedSecrets,
        unconfirmed_secrets: Object.values(unconfirmedSecrets),
      };
      this.sdkClient.set_shared_secrets(JSON.stringify(secretsStore));
    } catch (e) {
      throw e;
    }
  }

  getNotifications(): any[] | null {
    // return [
    //   {
    //     id: 1,
    //     title: 'Notif 1',
    //     description: 'A normal notification',
    //     sendToNotificationPage: false,
    //     path: '/notif1',
    //   },
    //   {
    //     id: 2,
    //     title: 'Notif 2',
    //     description: 'A normal notification',
    //     sendToNotificationPage: false,
    //     path: '/notif2',
    //   },
    //   {
    //     id: 3,
    //     title: 'Notif 3',
    //     description: 'A normal notification',
    //     sendToNotificationPage: false,
    //     path: '/notif3',
    //   },
    // ];
    return this.notifications;
  }

  setNotifications(notifications: any[]) {
    this.notifications = notifications;
  }

  async importJSON(backup: BackUp): Promise<void> {
    const device = JSON.stringify(backup.device);

    // Reset current device
    await this.resetDevice();

    await this.saveDeviceInDatabase(device);
    
    this.restoreDevice(device);

    // TODO restore secrets and processes from file
    const secretsStore = backup.secrets;
    await this.restoreSecretsFromBackUp(secretsStore);

    const processes = backup.processes;
    await this.restoreProcessesFromBackUp(processes);
  }

  public async createBackUp(): Promise<BackUp | null> {
    // Get the device from indexedDB
    const deviceStr = await this.getDeviceFromDatabase();
    if (!deviceStr) {
      console.error('No device loaded');
      return null;
    }

    const device: Device = JSON.parse(deviceStr);

    // Get the processes
    const processes = await this.getProcesses();

    // Get the shared secrets
    const secrets = await this.getAllSecrets();

    // Create a backup object
    const backUp = {
      device: device,
      secrets: secrets,
      processes: processes,
    };

    return backUp;
  }

  // Device 1 wait Device 2
  public device1: boolean = false;
  public device2Ready: boolean = false;

  public resetState() {
    this.device1 = false;
    this.device2Ready = false;
  }

  public async handleHandshakeMsg(url: string, parsedMsg: any) {
    try {
      const handshakeMsg: HandshakeMessage = JSON.parse(parsedMsg);
      this.updateRelay(url, handshakeMsg.sp_address);
      const processes = handshakeMsg.processes_list;
      this.membersList = handshakeMsg.peers_list;

      // Write processes to db
      setTimeout(async () => {
        await this.restoreProcessesFromBackUp(processes);
      }, 500)
    } catch (e) {
      console.error('Failed to parse init message:', e);
    }
  }
}