using line_gestao_api.Data;
using line_gestao_api.Models;
using Microsoft.EntityFrameworkCore;

namespace line_gestao_api.Services;

public class DataConsistencyService : IDataConsistencyService
{
    private readonly AppDbContext _db;

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

    public async Task SyncFromMobileLineAsync(MobileLine line, CancellationToken cancellationToken = default)
    {
        await ApplyMobileLineToSatellitesAsync(line, cancellationToken);
        await _db.SaveChangesAsync(cancellationToken);
    }

    public async Task SyncFromTrocaNumeroAsync(TrocaNumeroLine trocaNumero, CancellationToken cancellationToken = default)
    {
        var linhaAntiga = OnlyDigits(trocaNumero.LinhaAntiga);
        if (string.IsNullOrWhiteSpace(linhaAntiga))
        {
            return;
        }

        var mobile = await _db.MobileLines
            .FirstOrDefaultAsync(x => x.Linha != null && OnlyDigits(x.Linha) == linhaAntiga, cancellationToken);

        if (mobile == null)
        {
            return;
        }

        var linhaNova = OnlyDigits(trocaNumero.LinhaNova);
        if (!string.IsNullOrWhiteSpace(linhaNova))
        {
            mobile.Linha = linhaNova;
        }

        var iccid = OnlyDigits(trocaNumero.ICCID);
        if (!string.IsNullOrWhiteSpace(iccid))
        {
            mobile.Chip = iccid;
        }

        mobile.UpdatedAt = DateTime.UtcNow;
        await _db.SaveChangesAsync(cancellationToken);
        await ApplyMobileLineToSatellitesAsync(mobile, cancellationToken);
        await _db.SaveChangesAsync(cancellationToken);
    }

    private static string OnlyDigits(string? value)
    {
        if (string.IsNullOrWhiteSpace(value))
        {
            return string.Empty;
        }

        var chars = value.Where(char.IsDigit).ToArray();
        return new string(chars);
    }

    private async Task ApplyMobileLineToSatellitesAsync(MobileLine line, CancellationToken cancellationToken)
    {
        var item = line.Item;

        var vigencias = await _db.VigenciaLines
            .Where(x => x.Item == item)
            .ToListAsync(cancellationToken);

        foreach (var vigencia in vigencias)
        {
            vigencia.Conta = line.Conta;
            vigencia.Linha = line.Linha;
            vigencia.Cliente = line.Cliente;
            vigencia.Usuario = line.Usuario;
            vigencia.PlanoContrato = line.PlanoContrato;
            vigencia.UpdatedAt = DateTime.UtcNow;
        }

        var userDatas = await _db.UserDatas
            .Where(x => x.Item == item)
            .ToListAsync(cancellationToken);

        foreach (var userData in userDatas)
        {
            userData.Linha = line.Linha;
            userData.Cliente = line.Cliente;
            userData.UpdatedAt = DateTime.UtcNow;
        }
    }
}