import * as belt from '@tendermint/belt'
import { PosmintStdSignature } from '@pokt-network/amino-js/types/src/types/pocket'

const bytesToBase64 = belt.bytesToBase64
/**
 * Represents a given signature for a Transaction
 */
export class TxSignature {
  public readonly pubKey: Buffer
  public readonly signature: Buffer
  private readonly PUBLIC_KEY_TYPE: string = 'crypto/ed25519_public_key'

  /**
   * @param pubKey {Buffer} public key of the signer
   * @param signature {Buffer} the signature
   */
  public constructor(pubKey: Buffer, signature: Buffer) {
    this.pubKey = pubKey
    this.signature = signature
  }

  /**
   * Encodes the object to it's Amino encodable form
   */
  public toPosmintStdSignature(): PosmintStdSignature {
    return {
      pub_key: {
        type: this.PUBLIC_KEY_TYPE,
        value: bytesToBase64(this.pubKey).toString(),
      },
      signature: bytesToBase64(this.signature).toString(),
    }
  }
}