const tweetnacl=require('tweetnacl')
import {CurveTypeStr} from './type'
export class PublicKey{
    CurveType:string=CurveTypeStr.Ed25519
    PublicKey:string
    constructor(publicKey:string){
        console.log('publicKey.length',publicKey.length)
        if (publicKey.length !== 64)
        throw new Error('bad publicKey key size');
        this.PublicKey=publicKey
    }
    setCurveType(curveType){
        this.CurveType=curveType
    }
    verify(msg:Buffer,signData:Uint8Array){
       switch (this.CurveType){
        case CurveTypeStr.Ed25519:
            let msgArray=Uint8Array.from(msg)
            return tweetnacl.sign.detached.verify(msgArray, signData, Buffer.from(this.PublicKey,'hex'))  
        case CurveTypeStr.Secp256k1:
            throw new Error('CurveType Secp256k1 is not implemented')
        default:
            throw new Error('invalid curve type')
      }
    }
}