using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using BMA.EHR.Application.Common.Interfaces;
using BMA.EHR.Domain.Models.Leave.TimeAttendants;
using Microsoft.AspNetCore.Http;
using Microsoft.EntityFrameworkCore;

namespace BMA.EHR.Application.Repositories.Leaves.TimeAttendants
{
    public class LeaveProcessJobStatusRepository: GenericLeaveRepository<Guid, LeaveProcessJobStatus>
    {
         #region " Fields "

        private readonly ILeaveDbContext _dbContext;

        #endregion

        #region " Constructor and Destructor "

        public LeaveProcessJobStatusRepository(ILeaveDbContext dbContext,
                                               IHttpContextAccessor httpContextAccessor) : base(dbContext, httpContextAccessor)
        {
            _dbContext = dbContext;
        }

        #endregion

        #region " Methods "

        /// <summary>
        /// ดึงข้อมูล Job Status จาก TaskId
        /// </summary>
        public async Task<LeaveProcessJobStatus?> GetByTaskIdAsync(Guid id)
        {
            var data = await _dbContext.Set<LeaveProcessJobStatus>()
                                .Where(x => x.Id == id)
                                .FirstOrDefaultAsync();

            return data;
        }

        /// <summary>
        /// ดึงข้อมูล Job Status จาก UserId และสถานะ
        /// </summary>
        public async Task<List<LeaveProcessJobStatus>> GetByUserIdAndStatusAsync(Guid userId, string status)
        {
            var data = await _dbContext.Set<LeaveProcessJobStatus>()
                                .Where(x => x.CreatedUserId == userId.ToString("D") && x.Status == status)
                                .OrderByDescending(x => x.CreatedDate)
                                .ToListAsync();

            return data;
        }

        /// <summary>
        /// ดึงข้อมูล Job Status ที่ยัง pending หรือ processing
        /// </summary>
        public async Task<List<LeaveProcessJobStatus>> GetPendingOrProcessingJobsAsync(Guid userId)
        {
            var data = await _dbContext.Set<LeaveProcessJobStatus>()
                                .Where(x => x.CreatedUserId == userId.ToString("D") && 
                                       (x.Status == "PENDING" || x.Status == "PROCESSING"))
                                //.OrderByDescending(x => x.CreatedDate)
                                .ToListAsync();

            return data;
        }

        /// <summary>
        /// อัปเดตสถานะเป็น Processing
        /// </summary>
        public async Task<LeaveProcessJobStatus> UpdateToProcessingAsync(Guid id)
        {
            var job = await GetByTaskIdAsync(id);
            if (job != null)
            {
                job.Status = "PROCESSING";
                job.ProcessingDate = DateTime.Now;
                await UpdateAsync(job);
            }
            return job!;
        }

        /// <summary>
        /// อัปเดตสถานะเป็น Completed
        /// </summary>
        public async Task<LeaveProcessJobStatus> UpdateToCompletedAsync(Guid id, string? additionalData = null)
        {
            var job = await GetByTaskIdAsync(id);
            if (job != null)
            {
                job.Status = "COMPLETED";
                job.CompletedDate = DateTime.Now;
                await UpdateAsync(job);
            }
            return job!;
        }

        /// <summary>
        /// อัปเดตสถานะเป็น Failed
        /// </summary>
        public async Task<LeaveProcessJobStatus> UpdateToFailedAsync(Guid id, string errorMessage)
        {
            var job = await GetByTaskIdAsync(id);
            if (job != null)
            {
                job.Status = "FAILED";
                job.CompletedDate = DateTime.Now;
                job.ErrorMessage = errorMessage;
                await UpdateAsync(job);
            }
            return job!;
        }
        
        #endregion
    }
}