/*
 * Copyright 2018 NEM
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * Hash type. Supported types are:
 * 0: Op_Sha3_256 (default).
 * 1: Op_Keccak_256 (ETH compatibility).
 * 2: Op_Hash_160 (first with SHA-256 and then with RIPEMD-160 (BTC compatibility))
 * 3: Op_Hash_256: input is hashed twice with SHA-256 (BTC compatibility)
 */
import { Convert as convert } from '../../core/format';

export enum LockHashAlgorithm {
    Op_Sha3_256 = 0,
    Op_Hash_160 = 1,
    Op_Hash_256 = 2,
}

/**
 * Validate the hash length
 * @param hashAlgorithm Secret lock hash algorithm
 * @param input Hashed value
 * @returns {boolean}
 */
export function LockHashAlgorithmLengthValidator(hashAlgorithm: LockHashAlgorithm, input: string): boolean {
    if (convert.isHexString(input)) {
        switch (hashAlgorithm) {
            case LockHashAlgorithm.Op_Sha3_256:
            case LockHashAlgorithm.Op_Hash_256:
                return input.length === 64;
            case LockHashAlgorithm.Op_Hash_160:
                return input.length === 40 || input.length === 64;
            default:
                break;
        }
    }
    return false;
}