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

namespace Indotalent.Features.Organization.Employee.Cqrs;

public class LookupResponse
{
    public List<LookupItem> Branches { get; set; } = new();
    public List<LookupItem> Departments { get; set; } = new();
    public List<LookupItem> Designations { get; set; } = new();
    public List<LookupItem> Grades { get; set; } = new();
    public List<LookupItem> Incomes { get; set; } = new();
    public List<LookupItem> Deductions { get; set; } = new();
}

public class LookupItem
{
    public string? Id { get; set; }
    public string? Name { get; set; }
    public string? Code { get; set; }
    public decimal SalaryFrom { get; set; }
    public decimal SalaryTo { get; set; }
}

public record LookupQuery() : IRequest<LookupResponse>;

public class LookupHandler : IRequestHandler<LookupQuery, LookupResponse>
{
    private readonly AppDbContext _context;
    public LookupHandler(AppDbContext context) => _context = context;

    public async Task<LookupResponse> Handle(LookupQuery request, CancellationToken cancellationToken)
    {
        var response = new LookupResponse();

        response.Branches = await _context.Branch
            .AsNoTracking()
            .Select(x => new LookupItem { Id = x.Id, Name = x.Name, Code = x.Code })
            .ToListAsync(cancellationToken);

        response.Departments = await _context.Department
            .AsNoTracking()
            .Select(x => new LookupItem { Id = x.Id, Name = x.Name, Code = x.CostCenter })
            .ToListAsync(cancellationToken);

        response.Designations = await _context.Designation
            .AsNoTracking()
            .Select(x => new LookupItem { Id = x.Id, Name = x.Name, Code = x.Code })
            .ToListAsync(cancellationToken);

        response.Grades = await _context.Grade
                .AsNoTracking()
                .Select(x => new LookupItem
                {
                    Id = x.Id,
                    Name = x.Name,
                    Code = x.Code,
                    SalaryFrom = x.SalaryFrom,
                    SalaryTo = x.SalaryTo
                })
                .ToListAsync(cancellationToken);

        response.Incomes = await _context.Income
            .AsNoTracking()
            .Where(x => x.Status == "Active")
            .Select(x => new LookupItem { Id = x.Id, Name = x.Name, Code = x.Code })
            .ToListAsync(cancellationToken);

        response.Deductions = await _context.Deduction
            .AsNoTracking()
            .Where(x => x.Status == "Active")
            .Select(x => new LookupItem { Id = x.Id, Name = x.Name, Code = x.Code })
            .ToListAsync(cancellationToken);

        return response;
    }
}