// import { WebSocketClient } from '../websockets';
import { INotification } from '~/models/notification.model';
import homePage from '../html/home.html?raw';
import homeScript from '../html/home.js?raw';
import processPage from '../html/process.html?raw';
import processScript from '../html/process.js?raw';
import { IProcess } from '~/models/process.model';
import Database from './database';
import { WebSocketClient } from '../websockets';
import QRCode from 'qrcode'
import { servicesVersion } from 'typescript';
import { ApiReturn, CachedMessage, Member } from '../../dist/pkg/sdk_client';
import Routing from './routing.service';

export default class Services {
    private static instance: Services;
    private current_process: string | null = null;
    private sdkClient: any;
    private websocketConnection: WebSocketClient | null = null;
    private sp_address: string | null = null;
    private processes: IProcess[] | null =  null;
    private notifications: INotification[] | null = null;
    private subscriptions: {element: Element; event: string; eventHandler: string;}[] = [] ;
    private database: any
    // 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) {
            Services.instance = new Services();
            await Services.instance.init(); 
        }
        return Services.instance;
    }

    public async init(): Promise<void> {
      this.notifications =  this.getNotifications();
      this.sdkClient = await import("../../dist/pkg/sdk_client");
      this.database = Database.getInstance()
    }


    public async addWebsocketConnection(url: string): Promise<void> {
        const services = await Services.getInstance();
        const newClient = new WebSocketClient(url, services);
        if (!services.websocketConnection) {
            services.websocketConnection = newClient;
        }
    }
    public async recoverInjectHtml(): Promise<void> {
        const container = document.getElementById('containerId');

        if (!container) {
            console.error("No html container");
            return;
        }

        container.innerHTML = homePage;

        const newScript = document.createElement('script')
        newScript.setAttribute('type', 'module')
        newScript.textContent  = homeScript;
        document.head.appendChild(newScript).parentNode?.removeChild(newScript);

        const btn = container.querySelector('#scan-this-device')
        if(btn) {
            this.addSubscription(btn, 'click', 'injectProcessListPage')
        }
        const url = location.href

        this.generateQRCode(this.sp_address || '')
    }

    private generateQRCode = async (text: string) => {
      console.log("🚀 ~ Services ~ generateQRCode= ~ text:", text)
      try {
        const container = document.getElementById('containerId');
        const url = await QRCode.toDataURL(text);
        const qrCode = container?.querySelector('.qr-code img');
        qrCode?.setAttribute('src', url)
      } catch (err) {
        console.error(err);
      }
    }

    async prepareProcessTx(myAddress: string, recipientAddress: string) {

      const txid = '0'.repeat(64)
      var vout = Number.MAX_SAFE_INTEGER;
      const paringTemplate = {
        "html": "",
        "style": "",
        "script": "",
        "description": "AliceBob",
        "roles": {
            "owner": {
                "members": [{sp_addresses: [myAddress]}, {sp_addresses:[recipientAddress]}],
                "validation_rules":
                    [
                        {
                            "quorum": 1.0,
                            "fields": [
                                "roles",
                                "pairing_tx"
                            ],
                            "min_sig_member": 1.0
                        }
                    ]
            }
        },
        "pairing_tx": `${txid}:4294967295`,
      }
    

      const service = await Services.getInstance();
      const process = await service.sdkClient.create_update_transaction(undefined, JSON.stringify(paringTemplate), 1)
      return process
    }

    async sendPairingTx(sp_address: string): Promise<void> {
      const services = await Services.getInstance();
      const amount = await this.getAmount() as any
      console.log("🚀 ~ Services ~ sendPairingTx ~ amount:", amount)
      // if(amount === 0n) {
      //   const faucetMessage = await services.createFaucetMessage()
      //   console.log("🚀 ~ WebSocketClient ~ this.ws.onopen= ~ faucetMessage:", faucetMessage)
      //   services.websocketConnection?.sendNormalMessage(faucetMessage)
      // }
      
      const spAddress = await this.getDeviceAddress() as any
      let txid = '0'.repeat(64)
      
      setTimeout(async () => {
        let pairing = await services.sdkClient.pair_device(`${txid}:4294967295`, [sp_address])
        const process = await this.prepareProcessTx(spAddress, sp_address)
        const tx = process.new_tx_to_send
        const parsedTx = JSON.parse(tx)
        const transaction = parsedTx.transaction
        txid = await services.sdkClient.get_txid(transaction)
        const root_commitment = process.updated_process[0];
        const init_process = process.updated_process[1];
        console.log("🚀 ~ Services ~ setTimeout ~ init_process:", init_process, init_process.payload)
        console.log("🚀 ~ Services ~ setTimeout ~ txToSend:", tx)
        const prd = JSON.stringify(init_process.impending_requests[0]);
        services.websocketConnection?.sendMessage('NewTx', tx)
        pairing = await services.sdkClient.pair_device(`${txid}:0`, [sp_address])

        const dump = await services.sdkClient.dump_device()

        const prd_response = await services.sdkClient.response_prd(root_commitment, prd, true)
        console.log("🚀 ~ Services ~ setTimeout ~ prd_response:", prd_response, prd, root_commitment)
        if(process?.ciphers_to_send && process.ciphers_to_send.length) {
          await this.sendCipherMessages(process.ciphers_to_send)
        }
        const router = await Routing.getInstance();
        router.openLoginModal(spAddress, sp_address)
      }, 2000)
    }

    async resetDevice() {
      const service = await Services.getInstance()
      await service.sdkClient.reset_device()
    }

    async sendCipherMessages(messages: string[]) {
      const service = await Services.getInstance();
      messages.forEach((message) => {
          service.websocketConnection?.sendMessage('Cipher', message)
      })
    }

    async sendFaucetMessage(): Promise<void> {
      const services = await Services.getInstance();
      const faucetMessage = await services.createFaucetMessage()
      console.log("🚀 ~ WebSocketClient ~ this.ws.onopen= ~ faucetMessage:", faucetMessage)
      services.websocketConnection?.sendNormalMessage(faucetMessage)
    }

    async parseCipher(message: string) {
      try {
        const services = await Services.getInstance();
        try {
          JSON.parse(message)
          const router = await Routing.getInstance();
          router.closeLoginModal()
          this.injectProcessListPage()
        } catch {
          console.log('Not proper format for cipher')
        }
      const parsedTx = await services.sdkClient.parse_cipher(message, 0.00001)
      console.log("🚀 ~ Services ~ parseCipher ~ parsedTx:", parsedTx)
      await this.processTx(parsedTx)
      // await this.saveCipherTxToDb(parsedTx)
      } catch(e) {
        console.log(e)
      }
    }

    async parseNewTx(tx: string) {
      try {
        console.log('==============> sending txxxxxxx parser', tx)
        const services = await Services.getInstance();
        const parsedTx = await services.sdkClient.parse_new_tx(tx, 0, 0.01)
        console.log("🚀 ~ Services ~ parseNewTx ~ parsedTx:", parsedTx)
        if(parsedTx) {
          await this.processTx(parsedTx)
          // await this.saveTxToDb(parsedTx)
        }
      } catch(e) {
        console.log(e)
      }
    }

    async processTx(tx: ApiReturn) {
      const service = await Services.getInstance()
      if(tx.ciphers_to_send && tx.ciphers_to_send.length) {
        await this.sendCipherMessages(tx.ciphers_to_send)
      }

      if(tx.new_tx_to_send) {
        service.websocketConnection?.sendMessage('NewTx', tx.new_tx_to_send)
      }
      if(tx.updated_process && tx.updated_process.length) {
        // if(tx.ciphers_to_send?.length != 1 || tx.updated_process?.length != 2) return
        const impendingRequest = tx.updated_process[1].impending_requests[0]
        const pcdCommitment = impendingRequest.payload
        const outpointCommitment = tx.updated_process[0]
        console.log("🚀 ~ Services ~ processTx ~ pcdCommitment:", pcdCommitment)
        if(impendingRequest.prd_type === 'Update' && tx.ciphers_to_send.length === 0) {
          const router = await Routing.getInstance();

          // Mocker le fait que c'est une transaction de connection
          const services = await Services.getInstance();
          // const faucetMessage = await services.createFaucetMessage()
          // console.log("🚀 ~ WebSocketClient ~ this.ws.onopen= ~ faucetMessage:", faucetMessage)
          // services.websocketConnection?.sendNormalMessage(faucetMessage)
          router.openConfirmationModal(impendingRequest, outpointCommitment)
        }
      }
      
      if(tx.updated_cached_msg && tx.updated_cached_msg.length) {
        tx.updated_cached_msg.forEach(message => this.saveTxToDb(message)) 
      }

      // if(tx.prd) {
      //   const parsedPrd = JSON.parse(tx.prd)
      //   console.log("🚀 ~ Services ~ processTx ~ Opened:", parsedPrd)
      //   const router = await Routing.getInstance();

      //   // Mocker le fait que c'est une transaction de connection
      //   if(parsedPrd && parsedPrd.prd_type === 'Init') {
      //     const services = await Services.getInstance();
      //     const faucetMessage = await services.createFaucetMessage()
      //     console.log("🚀 ~ WebSocketClient ~ this.ws.onopen= ~ faucetMessage:", faucetMessage)
      //     services.websocketConnection?.sendNormalMessage(faucetMessage)
      //     router.openConfirmationModal(parsedPrd)
      //   } else if(parsedPrd && parsedPrd.prd_type === 'Signed') {
      //     router.closeLoginModal()
      //   }
      // }
    }

    async pairDevice(prd: any, outpointCommitment: string) {
      console.log("🚀 ~ Services ~ pairDevice ~ prd:", prd)
      const service = await Services.getInstance();
      const spAddress = await this.getDeviceAddress() as any;
      const sender = JSON.parse(prd?.sender)
      const senderAddress = sender?.sp_addresses?.find((address: string) => address !== spAddress)
      console.log("🚀 ~ Services ~ pairDevice ~ senderAddress:", senderAddress)
      if(senderAddress) {
        const proposal = service.sdkClient.get_update_proposals(outpointCommitment);
        console.log("🚀 ~ Services ~ pairDevice ~ proposal:", proposal)
        // const pairingTx = proposal.pairing_tx.replace(/^\"+|\"+$/g, '')
        const parsedProposal = JSON.parse(proposal[0])
        
        console.log("🚀 ~ Services ~ pairDevice ~ parsedProposal:", parsedProposal)
        const roles = JSON.parse(parsedProposal.roles)
        console.log("🚀 ~ Services ~ pairDevice ~ roles:", roles, Array.isArray(roles), !roles.owner)
        if(Array.isArray(roles) || !roles.owner) return
        const proposalMembers = roles?.owner?.members
        const isFirstDevice = proposalMembers.some((member: Member) => member.sp_addresses.some(address => address === spAddress))
        const isSecondDevice = proposalMembers.some((member: Member) => member.sp_addresses.some(address => address === senderAddress))
        console.log("🚀 ~ Services ~ pairDevice ~ proposalMembers:", proposalMembers)
        if(proposalMembers?.length !== 2 || !isFirstDevice || !isSecondDevice) return
        const pairingTx = parsedProposal?.pairing_tx?.replace(/^\"+|\"+$/g, '')
        
        let txid = '0'.repeat(64)
        console.log("🚀 ~ Services ~ pairDevice ~ pairingTx:", pairingTx, `${txid}:4294967295`)

        const pairing = await service.sdkClient.pair_device(`${txid}:4294967295`, [senderAddress])
        const device = this.dumpDevice()
        console.log("🚀 ~ Services ~ pairDevice ~ device:", device)
        this.saveDevice(device)
        // await service.sdkClient.pair_device(pairingTx, [senderAddress])
        console.log("🚀 ~ Services ~ pairDevice ~ pairing:", pairing)
        // const process = await this.prepareProcessTx(spAddress, senderAddress)
        console.log("🚀 ~ Services ~ pairDevice ~ process:", outpointCommitment, prd, prd.payload)
        const prdString = JSON.stringify(prd).trim()
        console.log("🚀 ~ Services ~ pairDevice ~ prdString:", prdString)
        let tx = await service.sdkClient.response_prd(outpointCommitment, prdString, true)
        console.log("🚀 ~ Services ~ pairDevice ~ tx:", tx)
        if(tx.ciphers_to_send) {
          tx.ciphers_to_send.forEach((cipher: string) => service.websocketConnection?.sendMessage('Cipher', cipher))
        }
        this.injectProcessListPage()
      }
    }

    async saveTxToDb(tx: CachedMessage) {
      const database = await Database.getInstance();
      const indexedDb = await database.getDb();
      await database.writeObject(indexedDb, 'messages', tx, null);
    }

    async saveCipherTxToDb(tx: string) {
      const database = await Database.getInstance();
      const indexedDb = await database.getDb();

      if(tx) {
        await database.writeObject(indexedDb, database.getStoreList().AnkCipherMessages, tx, null);
      }
    }

    async getAmount() {
      const services = await Services.getInstance();
      const amount = await services.sdkClient.get_available_amount()
      console.log("🚀 ~ Services ~ sendPairingTx ~ amount:", amount)
      return amount
    }

    async getDeviceAddress() {
      const services = await Services.getInstance();
      const address = await services.sdkClient.get_address()
      console.log("🚀 ~ Services ~ sendPairingTx ~ address:", address)
      return address
    }

    async dumpDevice() {
      const services = await Services.getInstance();
      const device = await services.sdkClient.dump_device()
      console.log("🚀 ~ Services ~ sendPairingTx ~ device:", device)
      return device
    }

    async saveDevice(device: any): Promise<any> {
      console.log("🚀 ~ Services ~ saveDevice ~ device:", device)
      localStorage.setItem('wallet', device);
    }

    async getDevice(): Promise<string | null> {
      return localStorage.getItem('wallet')
    }

    async dumpWallet() {
      const services = await Services.getInstance();
      const wallet = await services.sdkClient.dump_wallet()
      console.log("🚀 ~ Services ~ sendPairingTx ~ wallet:", wallet)
      return wallet
    }

    async createFaucetMessage() {
      const services = await Services.getInstance()
      const message =  await services.sdkClient.create_faucet_msg()
      return message;
    }

    private addSubscription(element: Element, event: string, eventHandler: string): void {
        this.subscriptions.push({ element, event, eventHandler });
        element.addEventListener(event, (this as any)[eventHandler].bind(this));
    }

    async getWallet(): Promise<any> {
      const database = await Database.getInstance();
      const indexedDb = await database.getDb();
      const wallet = await database.getAll(indexedDb, database.getStoreList().AnkSpAddress)
      console.log("🚀 ~ Services ~ getWallet ~ wallet:", wallet)
      if(wallet.length) return wallet;
      return undefined;
    }

    async createNewDevice() {
      const service = await Services.getInstance();
      const sp_address = await service.sdkClient.create_new_device(0, 'regtest')
      if(sp_address) {
        const database = await Database.getInstance();
        const indexedDb = await database.getDb();
        await database.writeObject(indexedDb, database.getStoreList().AnkSpAddress, {sp_address: sp_address}, null);
        const device  = await service.dumpDevice()
        console.log("🚀 ~ WebSocketClient ~ device:", device)
        await service.saveDevice(device)
      }
      this.sp_address = sp_address;
      return sp_address;
    }

    async getAdresses() {
      const database = await Database.getInstance();
      const indexedDb = await database.getDb();
      const wallet = await database.getAll(indexedDb, database.getStoreList().AnkSpAddress) as {sp_address: string}[]
      console.log("🚀 ~ Services ~ getWallet ~ wallet:", wallet)
      if(wallet.length) {
        this.sp_address = wallet[0].sp_address
      } 
      return this.sp_address
    }

    async restoreDevice(address: string) {
      const services = await Services.getInstance();
      // const sp_wallet = JSON.parse(address)?.sp_wallet
      console.log("🚀 ~ Services ~ restoreDevice ~ services?.sdkClient:",  address)
        const res = await services?.sdkClient?.restore_device(address)
        console.log("🚀 ~ Services ~ restoreDevice ~ res:", res)
    }

    private cleanSubsciptions(): void {
        for (const sub of this.subscriptions) {
          const el = sub.element;
          const eventHandler = sub.eventHandler;
          el.removeEventListener(sub.event, (this as any)[eventHandler].bind(this));
        }
        this.subscriptions = [];
      }
    
    async injectProcessListPage(): Promise<void>  {
        const container = document.getElementById('containerId');

        if (!container) {
            console.error("No html container");
            return;
        }

        this.cleanSubsciptions()
        
        const services = await Services.getInstance();
        // const user = services.sdkClient.create_user('Test', 'test', 10, 1, 'Messaging')
        // console.log("🚀 ~ Services ~ injectProcessListPage ~ user:", user)

        // const database = await Database.getInstance();
        // const indexedDb = await database.getDb();
        // await database.writeObject(indexedDb, database.getStoreList().AnkUser, user.user, null);
        container.innerHTML = processPage;
        const newScript = document.createElement('script');
        newScript.textContent  = processScript;
        document.head.appendChild(newScript).parentNode?.removeChild(newScript);
        
        this.processes = await services.getProcesses();
        if(this.processes) {
            services.setProcessesInSelectElement(this.processes)
        }
    }

    public async setProcessesInSelectElement(processList: any[]) {
        const select = document.querySelector(".select-field");
        if(select) {
            for (const process of processList) {
                const option = document.createElement("option");
                option.setAttribute("value", process.name);
                option.innerText = process.name;
                select.appendChild(option);
            }
        }
        const optionList = document.querySelector('.autocomplete-list');
        if(optionList) {
            const observer = new MutationObserver((mutations, observer) => {
                const options = optionList.querySelectorAll('li')
                if(options) {
                    for(const option of options) {
                        this.addSubscription(option, 'click', 'showSelectedProcess')
                    }
                }
              });
              observer.observe(document, {
                subtree: true,
                attributes: true,
              });
        }
    }

    public async listenToOptionListPopulating(event: Event) {
        const target = event.target as HTMLUListElement;
        const options = target?.querySelectorAll('li')
    }

    public async showSelectedProcess(event: MouseEvent) {
        const elem = event.target;
        if(elem) {

            const cardContent = document.querySelector(".card-content");
            const services = await Services.getInstance();

            const processes = await services.getProcesses();
            console.log("🚀 ~ Services ~ showSelectedProcess ~ processes:", processes)
            const process = processes.find((process: any) => process.name === (elem as any).dataset.value);
            if (process) {
              const processDiv = document.createElement("div");
              processDiv.className = "process";
              processDiv.id = process.name;
              const titleDiv = document.createElement("div");
              titleDiv.className = "process-title";
              titleDiv.innerHTML = `${process.name} : ${process.description}`;
              processDiv.appendChild(titleDiv);
              for (const zone of process.zoneList) {
                const zoneElement = document.createElement("div");
                zoneElement.className = "process-element";
                zoneElement.setAttribute('zone-id', zone.id.toString())
                zoneElement.innerHTML = `Zone ${zone.id} : ${zone.name}`;
                this.addSubscription(zoneElement, 'click', 'goToProcessPage')
                processDiv.appendChild(zoneElement);
              }
              if(cardContent) cardContent.appendChild(processDiv);
            }
        }
      }

      goToProcessPage(event: MouseEvent) {
        const target = event.target as HTMLDivElement;
        const zoneId = target?.getAttribute('zone-id');
        const processList = document.querySelectorAll('.process-element');
        if(processList) {
          for(const process of processList) {
            process.classList.remove('selected')
          }
        }
        target.classList.add('selected')

        console.log('=======================> going to process page', zoneId)
      }

      async getProcesses(): Promise<IProcess[]> {
        const processes = this.sdkClient.get_processes()
        console.log("🚀 ~ Services ~ getProcesses ~ processes:", processes)
        return [
          {
            id: 1,
            name: "Messaging",
            description: "Encrypted messages",
            zoneList: [
              {
                id: 1,
                name: "General",
                path: '/test'
              },
            ],
          },
          {
            id: 2,
            name: "Storage",
            description: "Distributed storage",
            zoneList: [
              {
                id: 1,
                name: "Paris",
                path: '/test'
              },
              {
                id: 2,
                name: "Normandy",
                path: '/test'
              },
              {
                id: 3,
                name: "New York",
                path: '/test'
              },
              {
                id: 4,
                name: "Moscow",
                path: '/test'
              },
            ],
          },
        ];
      }

      getNotifications(): INotification[] {
        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'
          }
        ]
      }

      async setNotification(): Promise<void> {
        const badge = document.querySelector('.notification-badge') as HTMLDivElement
        const notifications = this.notifications
        const noNotifications = document.querySelector('.no-notification') as HTMLDivElement
        if(notifications?.length) {
          badge.innerText = notifications.length.toString()
          const notificationBoard = document.querySelector('.notification-board') as HTMLDivElement
          noNotifications.style.display = 'none'
          for(const notif of notifications) {
            const notifElement = document.createElement("div");
            notifElement.className = "notification-element";
            notifElement.setAttribute('notif-id', notif.id.toString())
            notifElement.innerHTML = `
            <div>${notif.title}</div>
            <div>${notif.description}</div>
            `;
            // this.addSubscription(notifElement, 'click', 'goToProcessPage')
            notificationBoard.appendChild(notifElement);
          }
        }  else {
          noNotifications.style.display = 'block'

        }
      }
}