using Microsoft.EntityFrameworkCore.Migrations;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;
using Application.Services.Encryption;
// Ensure this namespace matches your actual service namespace
// Ensure this namespace matches your actual service namespace
using Domain.Entities;
using Infrastructure.Services.Encryption;

#nullable disable

namespace Infrastructure.Migrations;

    /// <inheritdoc />
    public partial class SeedAdminTable : Migration{
    
    private readonly IConfiguration _configuration;
    
    public SeedAdminTable()
    {
        var builder = new ConfigurationBuilder()
            .SetBasePath(Path.Combine(Directory.GetCurrentDirectory(), "../API"))
            .AddJsonFile("appsettings.json");

        _configuration = builder.Build();

        // Build the service provider
        var serviceProvider = new ServiceCollection()
            .AddSingleton<IEncryptionService, EncryptionService>()
            .BuildServiceProvider();
    }
    protected override void Up(MigrationBuilder migrationBuilder)
    {
        var adminName = _configuration["AdminSettings:Name"];
        var adminEmail = _configuration["AdminSettings:Email"];
        var adminPassword = _configuration["AdminSettings:Password"];

        var adminUser = new Admin();
        adminUser.SetName(adminName);
        adminUser.SetEmail(adminEmail);
        adminUser.SetPassword(ComputeSha256Hash(adminPassword));

        migrationBuilder.InsertData(
            table: "Admins",
            columns: new[] { "Id", "Name", "Email", "Password" },
            values: new object[] { adminUser.Id, adminUser.Name, adminUser.Email, adminUser.Password }
        );
    }
    
    private static string ComputeSha256Hash(string rawData)
        {
            // Create a SHA256   
            using (SHA256 sha256Hash = SHA256.Create())
            {
                // ComputeHash - returns byte array  
                byte[] bytes = sha256Hash.ComputeHash(Encoding.UTF8.GetBytes(rawData));
    
                // Convert byte array to a string   
                StringBuilder builder = new StringBuilder();
                for (int i = 0; i < bytes.Length; i++)
                {
                    builder.Append(bytes[i].ToString("x2"));
                }
                return builder.ToString();
            }
        }

    protected override void Down(MigrationBuilder migrationBuilder)
    {
        var adminEmail = _configuration["AdminSettings:Email"];
        migrationBuilder.DeleteData(
            table: "Admins",
            keyColumn: "Email",
            keyValue: adminEmail
        );
    }
    }