//
//  PasswordEntity.swift
//  pass
//
//  Created by Mingshen Sun on 11/2/2017.
//  Copyright © 2017 Bob Sun. All rights reserved.
//

import Foundation
import SwiftyUserDefaults

extension PasswordEntity {
    
    var nameWithCategory: String {
        get {
            if let p = path, p.hasSuffix(".gpg") {
                return p.substring(to: p.index(p.endIndex, offsetBy: -4))
            } else {
                return ""
            }
        }
    }
    
    func decrypt(passphrase: String) throws -> Password? {
        var password: Password?
        let encryptedDataPath = URL(fileURLWithPath: "\(Globals.repositoryPath)/\(path!)")
        let encryptedData = try Data(contentsOf: encryptedDataPath)
        let decryptedData = try PasswordStore.shared.pgp.decryptData(encryptedData, passphrase: passphrase)
        let plainText = String(data: decryptedData, encoding: .utf8) ?? ""
        password = Password(name: name!, plainText: plainText)
        return password
    }
    
    func encrypt(password: Password) throws -> Data {
        name = password.name
        let plainData = password.getPlainData()
        let pgp = PasswordStore.shared.pgp
        let encryptedData = try pgp.encryptData(plainData, usingPublicKey: pgp.getKeysOf(.public)[0], armored: Defaults[.encryptInArmored])
        return encryptedData
    }
    
    func getCategoryText() -> String {
        var parentEntity = parent
        var passwordCategoryArray: [String] = []
        while parentEntity != nil {
            passwordCategoryArray.append(parentEntity!.name!)
            parentEntity = parentEntity!.parent
        }
        passwordCategoryArray.reverse()
        return passwordCategoryArray.joined(separator: " > ")
    }
}