using FrameworkDAL.DTO.MessageHub.MessageHubGenerator;
using GB5Shared.DTO.Framework.Login;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using System;
using System.Net.Http;
using System.Text;
using System.Text.Json;
using System.Threading;
using System.Threading.Tasks;

namespace FrameworkBLL.MessageHub.MessageHubPlatforms
{
    public class SMSPlatform : IMessageHubPlatform.ISMSPlatform
    {
        private readonly ILogger<SMSPlatform> _logger;
        private readonly HttpClient _httpClient;
        private readonly SMSSettings _settings;

        public SMSPlatform(
            ILogger<SMSPlatform> logger,
            HttpClient httpClient,
            IOptions<SMSSettings> settings)
        {
            _logger = logger;
            _httpClient = httpClient;
            _settings = settings.Value;
        }

        public async Task SendSmsConversation(
            MessageHubDTO dto,
            LoginDTO loginContext,
            CancellationToken ct)
        {
            if (ct.IsCancellationRequested)
                throw new OperationCanceledException();

            try
            {
                var payload = new
                {
                    apiKey = _settings.ApiKey,
                    sender = _settings.SenderId,
                    to = dto.Recipient,
                    message = dto.MessageText
                };

                var json = JsonSerializer.Serialize(payload);

                var response = await _httpClient.PostAsync(
                    _settings.ApiUrl,
                    new StringContent(json, Encoding.UTF8, "application/json"),
                    ct);

                if (!response.IsSuccessStatusCode)
                {
                    var error = await response.Content.ReadAsStringAsync();
                    throw new Exception($"SMS API failed: {error}");
                }

                _logger.LogInformation(
                    "SMS sent successfully | To={Recipient} | User={UserId}",
                    dto.Recipient,
                    loginContext?.UserId);
            }
            catch (Exception ex)
            {
                _logger.LogError(ex,
                    "SMS sending failed | To={Recipient}",
                    dto.Recipient);
                throw;
            }
        }
    }

    #region Settings Class

    public class SMSSettings
    {
        public string ApiUrl { get; set; }
        public string ApiKey { get; set; }
        public string SenderId { get; set; }
        public string FromNumber { get; set; } = "";
    }

    #endregion
}