using LocalhostMES.Core;
using Microsoft.Owin.Hosting;
using System;
using System.Threading;
using System.Threading.Tasks;

namespace LocalhostMES.Api.Hosting
{
    /// <summary>
    /// 自托管 Web API（OWIN + Web API 2），供产线/上位机调用。
    /// </summary>
    public class WebApiService : IDisposable
    {
        private IDisposable _webApp;
        private readonly CancellationTokenSource _cts = new CancellationTokenSource();
        private StartOptions _startOptions;
        private string _baseUrl = "192.168.1.26:8081";

        public void Init(int port = 8081)
        {
            _baseUrl = $"http://192.168.1.26:{port}";
            _startOptions = new StartOptions
            {
                Urls = { $"http://192.168.1.26:{port}", $"http://10.157.15.51:{port}" }
            };
        }

        public Task StartAsync()
        {
            try
            {
                _webApp = WebApp.Start(_startOptions, app => new OwinWebApiStartup().Configuration(app));
                InitializeTestData();
                LogHelper.WriteLogInfo($"Web API服务已启动: {_baseUrl}");
                Console.WriteLine($"Web API服务已启动: {_baseUrl}");
            }
            catch (Exception ex)
            {
                Console.WriteLine($"启动Web API服务失败: {ex.Message}");
                LogHelper.WriteLogInfo($"启动Web API服务失败: {ex.Message}");
                throw;
            }

            return Task.CompletedTask;
        }

        private static void InitializeTestData()
        {
            try
            {
                Console.WriteLine("测试数据初始化完成");
            }
            catch (Exception ex)
            {
                Console.WriteLine($"初始化测试数据失败: {ex.Message}");
            }
        }

        public Task StopAsync()
        {
            _webApp?.Dispose();
            _webApp = null;
            Console.WriteLine("Web API服务已停止");
            return Task.CompletedTask;
        }

        public void Dispose()
        {
            _cts?.Cancel();
            _cts?.Dispose();
            _webApp?.Dispose();
            GC.SuppressFinalize(this);
        }

        public bool IsRunning => _webApp != null;
        public string BaseUrl => _baseUrl;
    }
}