using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Newtonsoft.Json;
using MirzaCryptoHelpers.Common;
using MirzaCryptoHelpers.Hashings;
using MirzaCryptoHelpers.SymmetricCryptos;
namespace JsonCollection
{

    public class Person
    {
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public string Job { get; set; }
        public Address Address { get; set; }
    }
    public class Address
    {
        public string AddressLine { get; set; }
        public string City { get; set; }
        public string Region { get; set; }
        public string Country { get; set; }
    }
    class Program
    {

        //Static password.
        //Note: Jangan pernah save password seperti ini. Ini hanya sample!
        private static string AES_KEY = "@#Th!$_Is_N0t_$tr0n9_PWD";


        /// <summary>
        /// Method untuk save data ke file.
        /// Data `people` dan nama file atau `filename` tidak boleh kosong
        /// </summary>
        /// <param name="people">Data orang</param>
        /// <param name="filename">Nama file</param>
        public static void SaveJson(List<Person> people, string filename)
        {
            if (people == null)
                throw new ArgumentNullException(nameof(people));
            if (string.IsNullOrEmpty(filename))
                throw new ArgumentNullException(nameof(filename));

            //Proses encyption dengan algoritma AES-256 bit
            //Encrypt value property dari data people
            AESCrypto aes = new AESCrypto();
            foreach(Person person in people)
            {
                person.FirstName = BitHelpers.ConvertToBase64String(aes.Encrypt(BitHelpers.ConvertStringToBytes(person.FirstName), AES_KEY));
                person.LastName = BitHelpers.ConvertToBase64String(aes.Encrypt(BitHelpers.ConvertStringToBytes(person.LastName), AES_KEY));
                person.Job = BitHelpers.ConvertToBase64String(aes.Encrypt(BitHelpers.ConvertStringToBytes(person.Job), AES_KEY));
                person.Address.AddressLine = BitHelpers.ConvertToBase64String(aes.Encrypt(BitHelpers.ConvertStringToBytes(person.Address.AddressLine), AES_KEY));
                person.Address.City = BitHelpers.ConvertToBase64String(aes.Encrypt(BitHelpers.ConvertStringToBytes(person.Address.City), AES_KEY));
                person.Address.Region = BitHelpers.ConvertToBase64String(aes.Encrypt(BitHelpers.ConvertStringToBytes(person.Address.Region), AES_KEY));
                person.Address.Country = BitHelpers.ConvertToBase64String(aes.Encrypt(BitHelpers.ConvertStringToBytes(person.Address.Country), AES_KEY));

            }



            //Buat StreamWriter untuk write data ke target file.
            //Note: append sengaja dibuat false agar file selalu diisi dengan newdata
            using (StreamWriter writer = new StreamWriter(path:filename,append:false))
            {
                //Proses serialization. Formatting.Indented artinya jsonnya akan disave dengan bentuk ter-format/rapi
                string json = JsonConvert.SerializeObject(people, Formatting.Indented);

                //Write json data ke file
                writer.Write(json);
                writer.Flush();

                Console.WriteLine($"Data has been saved to {filename}\n");
            }
        }

        /// <summary>
        /// Method untuk membaca json file dan meng-convert (deserialize) datanya
        /// ke class yang memiliki property dan tipe data yang sama
        /// </summary>
        /// <param name="filename">Nama file yang akan di load</param>
        public static void LoadJsonFile(string filename)
        {
            if (string.IsNullOrEmpty(filename))
                throw new ArgumentNullException(nameof(filename));

            //Check apabila file tidak ditemukan maka lempar error ke dev
            if (!File.Exists(filename))
                throw new FileNotFoundException("File tidak ditemukan");

            //Baca file menggunakan StreamReader
            using (StreamReader reader = new StreamReader(filename))
            {
                //Baca json file dan tampung di variable jsonData
                string jsonData = reader.ReadToEnd();

                //Proses de-serialization
                List<Person> people = JsonConvert.DeserializeObject<List<Person>>(jsonData);

                //Apabila data tidak kosong maka decrypt dan tampilkan.
                if(people!=null && people.Count>0)
                {

                    Console.WriteLine("#All people data:\n");

                    //Proses decryption dengan algoritma AES-256 bit
                    AESCrypto aes = new AESCrypto();
                    foreach (Person person in people)
                    {
                        person.FirstName = BitHelpers.ConvertBytesToString(aes.Decrypt(BitHelpers.ConvertFromBase64String(person.FirstName), AES_KEY));
                        person.LastName = BitHelpers.ConvertBytesToString(aes.Decrypt(BitHelpers.ConvertFromBase64String(person.LastName), AES_KEY));
                        person.Job = BitHelpers.ConvertBytesToString(aes.Decrypt(BitHelpers.ConvertFromBase64String(person.Job), AES_KEY));
                        person.Address.AddressLine = BitHelpers.ConvertBytesToString(aes.Decrypt(BitHelpers.ConvertFromBase64String(person.Address.AddressLine), AES_KEY));
                        person.Address.City = BitHelpers.ConvertBytesToString(aes.Decrypt(BitHelpers.ConvertFromBase64String(person.Address.City), AES_KEY));
                        person.Address.Region = BitHelpers.ConvertBytesToString(aes.Decrypt(BitHelpers.ConvertFromBase64String(person.Address.Region), AES_KEY));
                        person.Address.Country = BitHelpers.ConvertBytesToString(aes.Decrypt(BitHelpers.ConvertFromBase64String(person.Address.Country), AES_KEY));

                        //Tampilkan
                        Console.WriteLine($"`FirstName`:`{person.FirstName}`, " +
                            $"`LastName`:`{person.LastName}`, " +
                            $"`Job`:`{person.Job}`, " +
                            $"`AddressLine`:`{person.Address?.AddressLine}`, " +
                            $"`City`:`{person.Address?.City}`, " +
                            $"`Region`:`{person.Address?.Region}`," +
                            $"`Country`:`{person.Address?.Country}`");
                    }


                }
            }
        }

        /// <summary>
        /// Method ini digunakan untuk membuat fake static data hanya untuk sample saja
        /// </summary>
        /// <returns></returns>
        public static List<Person> ConstructData()
        {
            return new List<Person>
            {
                new Person
                {
                    FirstName = "Mirza Ghulam",
                    LastName = "Rasyid",
                    Job = "Software Developer",
                    Address = new Address
                    {
                        AddressLine = "St. ABC 221",
                        City = "West Jakarta",
                        Region = "Jakarta",
                        Country = "Indonesia"
                    }
                },
                new Person
                {
                    FirstName = "Michael",
                    LastName = "Hawk",
                    Job = "Senior Pentester",
                    Address = new Address
                    {
                        AddressLine = "St. DFX 112",
                        City = "North Jakarta",
                        Region = "Jakarta",
                        Country = "Indonesia"
                    }
                },
                new Person
                {
                    FirstName = "Razor",
                    LastName = "Engine",
                    Job = "Senior System Engineer",
                    Address = new Address
                    {
                        AddressLine = "One Microsoft Way",
                        City = "Seattle",
                        Region = "Washington",
                        Country = "USA"
                    }
                }
            };
        }
        static void Main(string[] args)
        {
            List<Person> people = ConstructData();

            //Save data
            SaveJson(people, @"D:\people.json");


            //Load saved data
            LoadJsonFile(@"D:\people.json");

            Console.ReadLine();
        }
    }
}