npm i -S @onflow/fcl

yarn add @onflow/fcl

import * as fcl from "@onflow/fcl";

const fcl = require("@onflow/fcl");

import { config } from "@onflow/fcl";

config({
  "accessNode.api": "https://rest-testnet.onflow.org", // Mainnet: "https://rest-mainnet.onflow.org"
  "discovery.wallet": "https://fcl-discovery.onflow.org/testnet/authn" // Mainnet: "https://fcl-discovery.onflow.org/authn"
})

import * as fcl from "@onflow/fcl";

const result = await fcl.query({
  cadence: `
    pub fun main(a: Int, b: Int, addr: Address): Int {
      log(addr)
      return a + b
    }
  `,
  args: (arg, t) => [
    arg(7, t.Int), // a: Int
    arg(6, t.Int), // b: Int
    arg("0xba1132bc08f82fe2", t.Address), // addr: Address
  ],
});
console.log(result); // 13

import * as fcl from "@onflow/fcl";
// in the browser, FCL will automatically connect to the user's wallet to request signatures to run the transaction
const txId = await fcl.mutate({
  cadence: `
    import Profile from 0xba1132bc08f82fe2
    
    transaction(name: String) {
      prepare(account: AuthAccount) {
        account.borrow<&{Profile.Owner}>(from: Profile.privatePath)!.setName(name)
      }
    }
  `,
  args: (arg, t) => [arg("myName", t.String)],
});

  async getAllNFTs(Address: string , chain: string) {
    const ad = Address;

      if (chain === "mainnet") {
          var MetadataViews = process.env.MetadataViews_mainnet;
          var NFTCatalog = process.env.NFTCatalog_mainnet;
          var NFTRetrieval = process.env.NFTRetrieval_mainnet;
          var url = "https://access-mainnet-beta.onflow.org";
      }
      else
      {
          var MetadataViews =process.env.MetadataViews_testnet;
          var NFTCatalog =process.env.NFTCatalog_testnet;
          var NFTRetrieval = process.env.NFTRetrieval_testnet;
          var url = "https://access-testnet.onflow.org";
      }

      fcl.config().put("accessNode.api", url);

      console.log(ad);
    try {

        const response = await fcl.query({
            cadence: `
import MetadataViews from ${MetadataViews}
import NFTCatalog from ${NFTCatalog}
import NFTRetrieval from ${NFTRetrieval}

pub struct NFT {
    pub let id: UInt64
    pub let name: String
    pub let description: String
    pub let thumbnail: String
    pub let externalURL: String
    pub let collectionStoragePath: StoragePath
    pub let collectionPublicPath: PublicPath
    pub let collectionPrivatePath: PrivatePath
    pub let publicLinkedType: Type
    pub let privateLinkedType: Type
    pub let collectionName: String
    pub let collectionDescription: String
    pub let collectionSquareImage: String
    pub let collectionBannerImage: String
    pub let collectionExternalURL: String
    pub let royalties: [MetadataViews.Royalty]

    init(
        id: UInt64,
        name: String,
        description: String,
        thumbnail: String,
        externalURL: String,
        collectionStoragePath: StoragePath,
        collectionPublicPath: PublicPath,
        collectionPrivatePath: PrivatePath,
        publicLinkedType: Type,
        privateLinkedType: Type,
        collectionName: String,
        collectionDescription: String,
        collectionSquareImage: String,
        collectionBannerImage: String,
        collectionExternalURL: String,
        royalties: [MetadataViews.Royalty]
    ) {
        self.id = id
        self.name = name
        self.description = description
        self.thumbnail = thumbnail
        self.externalURL = externalURL
        self.collectionStoragePath = collectionStoragePath
        self.collectionPublicPath = collectionPublicPath
        self.collectionPrivatePath = collectionPrivatePath
        self.publicLinkedType = publicLinkedType
        self.privateLinkedType = privateLinkedType
        self.collectionName = collectionName
        self.collectionDescription = collectionDescription
        self.collectionSquareImage = collectionSquareImage
        self.collectionBannerImage = collectionBannerImage
        self.collectionExternalURL = collectionExternalURL
        self.royalties = royalties
    }
}

pub fun main(ownerAddress: Address): {String: [NFT]} {
    let account = getAuthAccount(ownerAddress)
    let items: [MetadataViews.NFTView] = []
    let data: {String: [NFT]} = {}

    NFTCatalog.forEachCatalogKey(fun (collectionIdentifier: String):Bool {
        let value = NFTCatalog.getCatalogEntry(collectionIdentifier: collectionIdentifier)!
        let keyHash = String.encodeHex(HashAlgorithm.SHA3_256.hash(collectionIdentifier.utf8))
        let tempPathStr = "catalog".concat(keyHash)
        let tempPublicPath = PublicPath(identifier: tempPathStr)!

        account.link<&{MetadataViews.ResolverCollection}>(
            tempPublicPath,
            target: value.collectionData.storagePath
        )

        let collectionCap = account.getCapability<&AnyResource{MetadataViews.ResolverCollection}>(tempPublicPath)

        if !collectionCap.check() {
            return true
        }

        let views = NFTRetrieval.getNFTViewsFromCap(collectionIdentifier: collectionIdentifier, collectionCap: collectionCap)
        let items: [NFT] = []

        for view in views {
            let displayView = view.display
            let externalURLView = view.externalURL
            let collectionDataView = view.collectionData
            let collectionDisplayView = view.collectionDisplay
            let royaltyView = view.royalties

            if (displayView == nil || externalURLView == nil || collectionDataView == nil || collectionDisplayView == nil || royaltyView == nil) {
                // Bad NFT. Skipping....
                return true
            }

            items.append(
                NFT(
                    id: view.id,
                    name: displayView!.name,
                    description: displayView!.description,
                    thumbnail: displayView!.thumbnail.uri(),
                    externalURL: externalURLView!.url,
                    collectionStoragePath: collectionDataView!.storagePath,
                    collectionPublicPath: collectionDataView!.publicPath,
                    collectionPrivatePath: collectionDataView!.providerPath,
                    publicLinkedType: collectionDataView!.publicLinkedType,
                    privateLinkedType: collectionDataView!.providerLinkedType,
                    collectionName: collectionDisplayView!.name,
                    collectionDescription: collectionDisplayView!.description,
                    collectionSquareImage: collectionDisplayView!.squareImage.file.uri(),
                    collectionBannerImage: collectionDisplayView!.bannerImage.file.uri(),
                    collectionExternalURL: collectionDisplayView!.externalURL.url,
                    royalties: royaltyView!.getRoyalties()
                )
            )
        }

        data[collectionIdentifier] = items
        return true
    })

    return data
}
  `,
            //@ts-ignore
            args: (arg, t) => [arg(Address, t.Address)],
        });
        return response;
    }
    catch (error) {
        return error;
    }
  }

  async getNftById(account_id : String  , contractAddress: string,  collectionPublicPath : string,id: number, chain: string) {
      if (chain === "mainnet") {
          var MetadataViews = process.env.MetadataViews_mainnet;
          var url = "https://access-mainnet-beta.onflow.org";
      }
      else
      {
          var MetadataViews =process.env.MetadataViews_testnet;
          var url = "https://access-testnet.onflow.org";
      }

      fcl.config().put("accessNode.api", url);

    const ad = id;

    try {
        const response = await fcl.query({
            cadence: `
        
import MetadataViews from ${MetadataViews}

pub struct NFTView {
          pub let id: UInt64
          pub let name: String
          pub let description: String
          pub let externalURL: String
          pub let thumbnail : String
        
          init(
              id: UInt64,
              name: String,
              description: String,
              externalURL: String,
              thumbnail : String
              
          ) {
              self.id = id
              self.name = name
              self.description = description
              self.externalURL = externalURL
              self.thumbnail = thumbnail
          }
        }
/// This script gets all the view-based metadata associated with the specified NFT
/// and returns it as a single struct

pub fun main(address: Address, id: UInt64) : NFTView {
    let account = getAccount(address)

    
    
 let collection = account
              .getCapability(${collectionPublicPath})
              .borrow<&{MetadataViews.ResolverCollection}>()
              ?? panic("Could not borrow a reference to the collection")
        
          let viewResolver = collection.borrowViewResolver(id: id)!
        
          let nftView = MetadataViews.getNFTView(id: id, viewResolver : viewResolver)
        
          let collectionSocials: {String: String} = {}
          for key in nftView.collectionDisplay!.socials.keys {
              collectionSocials[key] = nftView.collectionDisplay!.socials[key]!.url
          }

            

 return NFTView(
              id: nftView.id,
              name: nftView.display!.name,
              description: nftView.display!.description,
              externalURL: nftView.externalURL!.url,
              thumbnail :  nftView.display!.thumbnail.uri()
          )
   
}
 
     `,
            //@ts-ignore
            args: (arg, t) => [
                arg(account_id, t.Address),
                arg(ad, t.UInt64)
            ],

        });
        return response;
    }catch (error) {
        return error;
    }

  }

  async getNftsByAddressInCollection(Address: string ,collectionPath : string ,chain: string) {

      if (chain === "mainnet") {
          var MetadataViews = process.env.MetadataViews_mainnet;
          var url = "https://access-mainnet-beta.onflow.org";
      }
      else
      {
          var MetadataViews =process.env.MetadataViews_testnet;
          var url = "https://access-testnet.onflow.org";
      }

      fcl.config().put("accessNode.api", url);



    try {
        const response = await fcl.query({
            cadence: `

import MetadataViews from ${MetadataViews}

/// This script gets all the view-based metadata associated with the specified NFT
/// and returns it as a single struct

pub fun main(address: Address): [{String: AnyStruct}] {
    let account = getAccount(address)

    let collection = account
        .getCapability(${collectionPath})
        .borrow<&{MetadataViews.ResolverCollection}>()
        ?? panic("Could not borrow a reference to the collection")

    let nft = collection.getIDs()
       var nfts: [{String: AnyStruct}] = []
    for id in nft {
       
       let nft = collection.borrowViewResolver(id: id)

    // Get the basic display information for this NFT
         let display = MetadataViews.getDisplay(nft)!

        let identifier = nft.getType().identifier
        let traits = MetadataViews.getTraits(nft)!
        
        let externalURL = MetadataViews.getExternalURL(nft)!.url

        
        

        
      let nftData = {
        "id": UInt64(id), 
        
         "name": display.name,
         "description": display.description, 
         "thumbnail": display.thumbnail.uri(),
         "identifier": identifier,
         "traits": traits,
         "externalURL": externalURL
            
       
          
      }
        nfts.append(nftData)
    }
  
    

    return nfts
}
 
  `,
            //@ts-ignore
            args: (arg, t) => [arg(Address, t.Address)],
        });
        return response;
    }catch (error) {
        return error;
    }
  }