using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using WebApplication3.Models;
using WebApplication3.Clases;

namespace WebApplication3.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class PiezometerController : ControllerBase
    {
        private readonly AquiferContext _context;
        private TsPiezometerController tsPiezometerController;
        
        
        public PiezometerController(AquiferContext context)
        {
            _context = context;
            tsPiezometerController = new TsPiezometerController(context);
            
        }

        // GET: api/Piezometer
        [HttpGet]
        public async Task<ActionResult<IEnumerable<Piezometer>>> GetPiezmeters()
        {
            return await _context.Piezometers.ToListAsync();
        }

        // GET: api/Piezometer/5
        [HttpGet("{id}")]
        public async Task<ActionResult<Piezometer>> GetPiezometer(uint id)
        {            
            var piezometer = await _context.Piezometers.FindAsync(id);
            
            if (piezometer == null)
            {
                return NotFound();
            }
            
            return piezometer;
        }

        [HttpPost("Import")]
        public async Task<ActionResult<bool>> ImportPiezometersFromCSV(DatosPostSimulacion data)
        {
            Parser parser = new();
            string file = Constants.PathExtract + data.Fichero.Nombre;
            bool result = true;

            //Saving the file into hard drive
            try
            {
                byte[] tempBytes = Convert.FromBase64String(data.Fichero.Base64);
                System.IO.File.WriteAllBytes(file, tempBytes);

            }
            catch (Exception ex)
            {
                return Problem(ex.Message);
            }

            //parsing the information from the file we've just saved
            PiezometerData[] piezometers = parser.parsePiezometerCSV(file);

            try
            {


                foreach (PiezometerData p in piezometers)
                {
                    Piezometer piezometer = p.ToPiezometer();
                    await this.PostPiezometer(piezometer);

                    foreach (TimeSerieInterno tsi in p.Rates)
                    {
                        TsPiezometer tsp = new();
                        tsp.PiezometerId = piezometer.Id;
                        tsp.Date = tsi.DateIn;
                        tsp.Day = tsi.Hora;
                        tsp.Quote = tsi.Valor;

                        await tsPiezometerController.PostTsPiezometer(tsp);
                    }
                }
            }
            catch(Exception ex)
            {
                Logger.WriteLog("Error while importing piezometers");
                Logger.WriteLog(ex.Message);
                Logger.WriteLog(ex.InnerException.Message);
            }

            return result;
        }

        // POST: api/Piezometer
        // To protect from overposting attacks, see https://go.microsoft.com/fwlink/?linkid=2123754
        [NonAction]
        public async Task<ActionResult<Piezometer>> PostPiezometer(Piezometer piezometer)
        {
            _context.Piezometers.Add(piezometer);
            try
            {
                Logger.WriteLog("Guardar cambios async");
                await _context.SaveChangesAsync();

            }
            catch (DbUpdateException ex)
            {
                if (PiezometerExists(piezometer.Id))
                {
                    return Conflict();
                }
                else
                {
                    Logger.WriteLog("FALLO AL GUARDAR PIEZOMETRO");
                    Logger.WriteLog(ex.Message);
                    Logger.WriteLog(ex.InnerException.Message);
                    throw;
                }
            }


            return CreatedAtAction("GetPiezometria", new { id = piezometer.Id }, piezometer);
        }

        // DELETE: api/Pozo/5
        [HttpDelete("{id}")]
        public async Task<IActionResult> DeletePiezometer(uint id)
        {
            var piezometer = await _context.Piezometers.FindAsync(id);
            if (piezometer == null)
            {
                return NotFound();
            }
            
            _context.Piezometers.Remove(piezometer);
            await _context.SaveChangesAsync();

            return NoContent();
        }

        private bool PiezometerExists(uint id)
        {
            return _context.Piezometers.Any(e => e.Id == id);
        }

        
    }
}