using Microsoft.AspNetCore.Mvc;
using Documents.Models;
using Domain.Dtos;
using Domain.Entities;
using Domain.Generics;
using Models.Interfaces;
using System.Reflection;
using Documents.Interfaces;

namespace phronCare.API.Controllers.Sales
{
    [Route("api/[controller]")]
    [ApiController]
    public class QuoteController : ControllerBase
    {
        private readonly IDocumentTemplateService _documentTemplateService;
        private readonly IQuoteDom _quoteService;
        public QuoteController(IDocumentTemplateService documentTemplateService, IQuoteDom quoteService)
        {
            _documentTemplateService = documentTemplateService ?? 
                throw new ArgumentNullException(nameof(documentTemplateService)); ;
            _quoteService = quoteService ?? 
                throw new ArgumentNullException(nameof(quoteService));
        }

        #region Obtener Presupuestos
        /// <summary>
        /// Busca presupuestos con filtros de texto libre o por ID, paginados.
        /// </summary>
        [HttpGet("search")]
        public async Task<ActionResult<PagedResult<QuoteDto>>> Search(
            [FromQuery] int? customerId,
            [FromQuery] string? customerText,
            [FromQuery] string? quoteNumber,
            [FromQuery] int? professionalId,
            [FromQuery] string? professionalText,
            [FromQuery] int? institutionId,
            [FromQuery] string? institutionText,
            [FromQuery] int? patientId,
            [FromQuery] string? patientText,
            [FromQuery] DateTime? issueDateFrom,
            [FromQuery] DateTime? issueDateTo,
            [FromQuery] string? status,
            [FromQuery] int page = 1,
            [FromQuery] int pageSize = 50)
        {
            try
            {
                var result = await _quoteService.SearchAsync(
                    customerId,
                    customerText,
                    quoteNumber,
                    professionalId,
                    professionalText,
                    institutionId,
                    institutionText,
                    patientId,
                    patientText,
                    issueDateFrom,
                    issueDateTo,
                    status,
                    page,
                    pageSize);

                return Ok(result);
            }
            catch (Exception ex)
            {
                var methodName = MethodBase.GetCurrentMethod()?.Name ?? "UnknownMethod";
                // Log exception as needed...
                return StatusCode(500, $"{methodName} Message: {ex.Message}");
            }
        }

        /// <summary>
        /// Obtiene un presupuesto completo por su ID.
        /// </summary>
        [HttpGet("{id}")]
        public async Task<ActionResult<QuoteDto>> GetById(int id)
        {
            try
            {
                var quote = await _quoteService.GetDtoByIdAsync(id);

                if (quote == null)
                    return NotFound($"Presupuesto con ID {id} no encontrado.");

                return Ok(quote);
            }
            catch (Exception ex)
            {
                var methodName = MethodBase.GetCurrentMethod()?.Name ?? "UnknownMethod";
                return StatusCode(500, $"{methodName} Message: {ex.Message}");
            }
        }

        /// <summary>
        /// Devuelve un presupuesto DTO con información básica a partir del número de presupuesto.
        /// </summary>
        [HttpGet("summary/{quoteNumber}")]
        public async Task<ActionResult<QuoteDto>> GetHeaderDtoByQuoteNumber(string quoteNumber)
        {
            try
            {
                var dto = await _quoteService.GetDtoByQuoteNumberAsync(quoteNumber);
                if (dto == null)
                    return NotFound($"No se encontró un presupuesto con el número: {quoteNumber}");

                return Ok(dto);
            }
            catch (Exception ex)
            {
                var methodName = MethodBase.GetCurrentMethod()?.Name ?? "UnknownMethod";
                return StatusCode(500, $"{methodName} Message: {ex.Message}");
            }
        }

        /// <summary>  
        /// Genera y devuelve un archivo PDF correspondiente al presupuesto especificado por su ID.  
        /// </summary>
        [HttpGet("{id}/pdf")]
        public async Task<IActionResult> GetQuotePdf(int id)
        {
            var quote = await _quoteService.GetDtoByIdAsync(id);

            if (quote == null)
                return NotFound($"Presupuesto con ID {id} no encontrado.");

            var pdfBytes = await _documentTemplateService.GenerateDocumentAsync(new DocumentGenerationRequest
            {
                Model = quote
            });

            return File(pdfBytes, "application/pdf", $"Presupuesto_{quote.Quotenumber}.pdf");
        }
        #endregion

        #region Endpoint de emision de presupuesto (encabezado + detalles + roles + ajustes + impuestos)
        [HttpPost("createfull")]
        public async Task<IActionResult> CreateFullQuote([FromBody] CreateFullQuoteRequest request)
        {
            try
            {
                // Validamos que el request y el objeto Quote no sean nulos
                if (request == null || request.Quote == null)
                    return BadRequest("El payload no puede contener elementos nulos.");

                // Desempaquetamos los datos
                var quote = request.Quote;
                var formSeriesId = request.FormSeriesId;

                // Llamada al servicio de negocio
                (int quoteId, string quoteNumber) = await _quoteService.CreateFullQuoteAsync(request.Quote, request.FormSeriesId);
                // Devolvemos el número generado
                return Ok(new { Success = true, Id = quoteId, QuoteNumber = quoteNumber });
            }
            catch (ArgumentNullException ex)
            {
                return BadRequest($"Validación fallida: {ex.Message}");
            }
            catch (InvalidOperationException ex)
            {
                return BadRequest($"Error de negocio: {ex.Message}");
            }
            catch (Exception ex)
            {
                return StatusCode(500, $"Ocurrió un error interno: {ex.Message}");
            }
        }

        public class CreateFullQuoteRequest
        {
            public EQuoteHeader Quote { get; set; } = default!;
            public int FormSeriesId { get; set; }
        }

        #endregion

        #region Autorizacion de presupuestos
        [HttpPost("authorize")]
        public async Task<IActionResult> AuthorizeQuote([FromBody] QuoteAuthorizationRequest request)
        {
            if (request == null || request.Items == null)
                return BadRequest("No se recibió información válida para autorizar.");

            var result = await _quoteService.AuthorizeQuoteAsync(request.QuoteId, request.Items);

            return result
                ? Ok(new { success = true, message = "Presupuesto procesado correctamente." })
                : BadRequest(new { success = false, message = "No se pudo autorizar el presupuesto." });
        }

        #endregion
    }
}