using Indotalent.ConfigBackEnd.Extensions;
using Indotalent.Infrastructure.Database;
using MediatR;
using Microsoft.EntityFrameworkCore;

namespace Indotalent.Features.Leave.LeaveRequest.Cqrs;

public class GetLeaveRequestListResponse
{
    public string? Id { get; set; }
    public string? AutoNumber { get; set; }
    public string? EmployeeId { get; set; }
    public string? EmployeeName { get; set; }
    public string? LeaveType { get; set; }
    public DateTime StartDate { get; set; }
    public DateTime EndDate { get; set; }
    public double Days { get; set; }
    public string? Reason { get; set; }
    public string? Status { get; set; }
}

public record GetLeaveRequestListQuery() : IRequest<List<GetLeaveRequestListResponse>>;

public class GetLeaveRequestListHandler : IRequestHandler<GetLeaveRequestListQuery, List<GetLeaveRequestListResponse>>
{
    private readonly AppDbContext _context;

    public GetLeaveRequestListHandler(AppDbContext context) => _context = context;

    public async Task<List<GetLeaveRequestListResponse>> Handle(GetLeaveRequestListQuery request, CancellationToken cancellationToken)
    {
        return await _context.LeaveRequest
            .AsNoTracking()
            .NotDeletedOnly()
            .Include(x => x.Employee)
            .Include(x => x.LeaveCategory)
            .OrderByDescending(x => x.CreatedAt)
            .Select(x => new GetLeaveRequestListResponse
            {
                Id = x.Id,
                AutoNumber = x.AutoNumber,
                EmployeeId = x.Employee != null ? x.Employee.Code : string.Empty,
                EmployeeName = x.Employee != null ? $"{x.Employee.FirstName} {x.Employee.LastName}" : string.Empty,
                LeaveType = x.LeaveCategory != null ? x.LeaveCategory.Name : string.Empty,
                StartDate = x.StartDate,
                EndDate = x.EndDate,
                Days = x.Days,
                Reason = x.Reason,
                Status = x.Status
            })
            .ToListAsync(cancellationToken);
    }
}