import type { EncryptionPrivateKey } from '../../domain/keypair.js'
import type { Result } from '../../framework/types/result.js'

import { BaseError } from '../../framework/error/mod.js'

import { makeError, makeSuccess } from '../../framework/types/result.js'
import { decrypt as decryptContents } from './internal/decrypt.js'

export class DecryptError extends BaseError {
  public readonly _tag = 'DecryptError'

  constructor(public readonly cause: unknown) {
    super(`failed decrypt contents: ${cause}`)
  }
}

export interface DecryptDto {
  privateJwk: EncryptionPrivateKey
  encryptedContents: string
}

export function buildDecrypt() {
  return async function encrypt(
    dto: DecryptDto,
  ): Promise<Result<DecryptError, string>> {
    try {
      const decrypted = await decryptContents(
        dto.privateJwk,
        dto.encryptedContents,
      )

      return makeSuccess(decrypted)
    } catch (cause: unknown) {
      return makeError(new DecryptError(cause))
    }
  }
}