using line_gestao_api.Data;
using line_gestao_api.Dtos;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;

namespace line_gestao_api.Controllers;

[ApiController]
[Route("api/parcelamentos")]
[Authorize]
public class ParcelamentosController : ControllerBase
{
    private readonly AppDbContext _db;

    public ParcelamentosController(AppDbContext db)
    {
        _db = db;
    }

    [HttpGet]
    public async Task<ActionResult<PagedResult<ParcelamentoListDto>>> GetAll(
        [FromQuery] int? anoRef,
        [FromQuery] string? linha,
        [FromQuery] string? cliente,
        [FromQuery] int? competenciaAno,
        [FromQuery] int? competenciaMes,
        [FromQuery] int page = 1,
        [FromQuery] int pageSize = 20)
    {
        page = page < 1 ? 1 : page;
        pageSize = pageSize < 1 ? 20 : pageSize;

        var query = _db.ParcelamentoLines.AsNoTracking();

        if (anoRef.HasValue)
        {
            query = query.Where(x => x.AnoRef == anoRef.Value);
        }

        if (!string.IsNullOrWhiteSpace(linha))
        {
            var l = linha.Trim();
            query = query.Where(x => x.Linha == l);
        }

        if (!string.IsNullOrWhiteSpace(cliente))
        {
            var c = cliente.Trim();
            query = query.Where(x => x.Cliente != null && EF.Functions.ILike(x.Cliente, $"%{c}%"));
        }

        if (competenciaAno.HasValue && competenciaMes.HasValue)
        {
            var competencia = new DateOnly(competenciaAno.Value, competenciaMes.Value, 1);
            query = query.Where(x => x.MonthValues.Any(m => m.Competencia == competencia));
        }

        var total = await query.CountAsync();

        var items = await query
            .OrderBy(x => x.Item)
            .Skip((page - 1) * pageSize)
            .Take(pageSize)
            .Select(x => new ParcelamentoListDto
            {
                Id = x.Id,
                AnoRef = x.AnoRef,
                Item = x.Item,
                Linha = x.Linha,
                Cliente = x.Cliente,
                QtParcelas = x.QtParcelas,
                ParcelaAtual = x.ParcelaAtual,
                TotalParcelas = x.TotalParcelas,
                ValorCheio = x.ValorCheio,
                Desconto = x.Desconto,
                ValorComDesconto = x.ValorComDesconto
            })
            .ToListAsync();

        return Ok(new PagedResult<ParcelamentoListDto>
        {
            Page = page,
            PageSize = pageSize,
            Total = total,
            Items = items
        });
    }

    [HttpGet("{id:guid}")]
    public async Task<ActionResult<ParcelamentoDetailDto>> GetById(Guid id)
    {
        var item = await _db.ParcelamentoLines
            .AsNoTracking()
            .Include(x => x.MonthValues)
            .FirstOrDefaultAsync(x => x.Id == id);

        if (item == null)
        {
            return NotFound();
        }

        var dto = new ParcelamentoDetailDto
        {
            Id = item.Id,
            AnoRef = item.AnoRef,
            Item = item.Item,
            Linha = item.Linha,
            Cliente = item.Cliente,
            QtParcelas = item.QtParcelas,
            ParcelaAtual = item.ParcelaAtual,
            TotalParcelas = item.TotalParcelas,
            ValorCheio = item.ValorCheio,
            Desconto = item.Desconto,
            ValorComDesconto = item.ValorComDesconto,
            MonthValues = item.MonthValues
                .OrderBy(x => x.Competencia)
                .Select(x => new ParcelamentoMonthDto
                {
                    Competencia = x.Competencia,
                    Valor = x.Valor
                })
                .ToList()
        };

        return Ok(dto);
    }
}