using LMS.Common.Extensions;
using LMS.DAO;
using LMS.Repository.DB;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using Quartz;

namespace LMS.Tools.MJPackage
{
    [DisallowConcurrentExecution]
    public class TaskStatusCheckService(ITokenService tokenService, ApplicationDbContext dbContext, ILogger<TaskStatusCheckService> logger, ITaskService taskService, ITaskConcurrencyManager taskConcurrencyManager, TokenUsageTracker tokenUsageTracker) : IJob
    {
        private readonly ITokenService _tokenService = tokenService;
        private readonly ApplicationDbContext _dbContext = dbContext;
        private readonly ILogger<TaskStatusCheckService> _logger = logger;
        private readonly ITaskService _taskService = taskService;
        private readonly ITaskConcurrencyManager _taskConcurrencyManager = taskConcurrencyManager;
        private readonly TokenUsageTracker _tokenUsageTracker = tokenUsageTracker;

        public async Task Execute(IJobExecutionContext context)
        {
            _logger.LogInformation($"开始检查TASK信息 - 检查间隔: 20 秒，同步加载 原始请求的Token！");

            var startTime = BeijingTimeExtension.GetBeijingTime();
            try
            {
                // 强制同步数据库数据，原请求Token
                await _tokenService.LoadOriginTokenAsync();

                // 强制同步数据 MJ API 的 Basic URL

                await _tokenService.LoadMJAPIBasicUrlAsync();


                // 检查Task状态和返回值
                // 获取所有超过五分钟没有完成的人物
                List<MJApiTasks> tasks = await _dbContext.MJApiTasks.Where(t => t.Status != MJTaskStatus.CANCEL && t.Status != MJTaskStatus.SUCCESS && t.Status != MJTaskStatus.FAILURE && t.StartTime < BeijingTimeExtension.GetBeijingTime()).ToListAsync();

                if (tasks.Count == 0)
                {
                    _logger.LogInformation("没有需要检查的任务！");
                    return;
                }

                // 开始每个请求
                foreach (MJApiTasks task in tasks)
                {
                    try
                    {
                        Dictionary<string, object>? properties = await _taskService.FetchTaskAsync(task);
                        // 没有找到数据的
                        if (properties == null)
                        {
                            // 没有找到数据 直接把任务失败
                            task.Status = MJTaskStatus.FAILURE;
                            var newProperties = new
                            {
                                failReason = "任务丢失或未找到"
                            };
                            task.EndTime = BeijingTimeExtension.GetBeijingTime();
                            task.Properties = JsonConvert.SerializeObject(newProperties);
                            // 尝试释放 当前缓存中的任务
                            _tokenUsageTracker.RemoveTaskCache(task.ThirdPartyTaskId);
                            _logger.LogWarning("任务轮询检查，未请求到对应的MJ数据，释放Token，释放任务" + task.Token);
                            _tokenUsageTracker.ReleaseConcurrencyPermit(task.Token);
                        }
                        else
                        {
                            // 尝试获取状态字段
                            string status = MJTaskStatus.SUBMITTED;
                            if (properties.TryGetValue("status", out var statusElement))
                            {
                                status = statusElement.ToString() ?? MJTaskStatus.SUBMITTED;
                            }
                            else if (properties.TryGetValue("Status", out var statusElementCap))
                            {
                                status = statusElementCap.ToString() ?? MJTaskStatus.SUBMITTED;
                            }
                            task.Status = status;

                            if (status == MJTaskStatus.SUCCESS || status == MJTaskStatus.FAILURE || status == MJTaskStatus.CANCEL)
                            {
                                // 当前任务已经被释放过了
                                // 开始修改数据
                                task.EndTime = BeijingTimeExtension.GetBeijingTime();
                                task.Properties = JsonConvert.SerializeObject(properties);
                                _logger.LogInformation("任务轮询检查，已请求到对应的MJ数据，并且状态为成功，失败，取消，释放Token，释放任务" + task.Token);
                                _tokenUsageTracker.ReleaseConcurrencyPermit(task.Token);
                                // 尝试释放 当前缓存中的任务
                                _tokenUsageTracker.RemoveTaskCache(task.ThirdPartyTaskId);
                            }
                            else
                            {
                                // 任务还在处理中
                                task.EndTime = null; // 处理中没有结束时间
                                task.Properties = JsonConvert.SerializeObject(properties);
                            }
                        }
                        // 开始修改数据
                        await _taskConcurrencyManager.UpdateTaskInDatabase(task);
                    }
                    catch (Exception ex)
                    {
                        // 报错
                        _logger.LogError(ex, $"检查任务 {task.Token} 时发生错误，释放Token，释放任务", task.TaskId);
                        task.Status = MJTaskStatus.FAILURE;
                        var newProperties = new
                        {
                            failReason = "任务报错"
                        };
                        task.EndTime = BeijingTimeExtension.GetBeijingTime();
                        task.Properties = JsonConvert.SerializeObject(newProperties);
                        _tokenUsageTracker.ReleaseConcurrencyPermit(task.Token);
                        // 尝试释放 当前缓存中的任务
                        _tokenUsageTracker.RemoveTaskCache(task.ThirdPartyTaskId);
                        // 开始修改数据
                        await _taskConcurrencyManager.UpdateTaskInDatabase(task);
                    }
                }
                var duration = BeijingTimeExtension.GetBeijingTime() - startTime;
                _logger.LogInformation($"Task状态检查完成，影响的Task {tasks.Count}，耗时: {duration}ms", duration.TotalMilliseconds);
            }
            catch (Exception ex)
            {
                var duration = BeijingTimeExtension.GetBeijingTime() - startTime;
                _logger.LogError(ex, "Token同步失败，耗时: {Duration}ms", duration.TotalMilliseconds);
            }
        }
    }
}