using Api.SeaHavenIndustries.Helper;
using Data.SeaHavenIndustries;
using FluentValidation;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Logging;
using SeaHaven.DataServices.Models;
using SeaHaven.Services.DTOs;
using SeaHaven.Services.Interfaces;
using System.Security.Claims;

namespace Api.SeaHavenIndustries.Controllers
{
    [Authorize]
    [ApiController]
    [Route("api/vendor-company-roster")]
    public class VendorCompanyRosterController : Controller
    {
        private readonly IVendorCompanyRosterService _rosterService;
        private readonly ILogger<VendorCompanyRosterController> _logger;

        public VendorCompanyRosterController(
            IVendorCompanyRosterService rosterService,
            ILogger<VendorCompanyRosterController> logger)
        {
            _rosterService = rosterService;
            _logger = logger;
        }

        [HttpGet]
        public async Task<IActionResult> Get(
            [FromQuery] int? vendorId,
            [FromQuery] int? companyId,
            CancellationToken cancellationToken)
        {
            var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
            if (userId == null)
                return Unauthorized(new Response { Status = "Error", Message = "User not authenticated" });

            try
            {
                var roster = await _rosterService.GetRosterAsync(vendorId, companyId, userId, cancellationToken);
                if (roster == null)
                    return NotFound(new Response { Status = "Error", Message = "Vendor roster not found" });

                return Ok(roster);
            }
            catch (ValidationException vex)
            {
                var errors = string.Join(", ", vex.Errors.Select(e => e.ErrorMessage));
                return BadRequest(new Response { Status = "Validation Error", Message = errors });
            }
            catch (UnauthorizedAccessException)
            {
                return Unauthorized(new Response { Status = "Error", Message = "User not authenticated" });
            }
            catch (Exception ex)
            {
                return StatusCode(500, new Response { Status = "Error", Message = _logger.Sanitize(ex) });
            }
        }

        [HttpPost]
        public async Task<IActionResult> Create([FromBody] CreateVendorRosterDTO model, CancellationToken cancellationToken)
        {
            var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
            if (userId == null)
                return Unauthorized(new Response { Status = "Error", Message = "User not authenticated" });

            try
            {
                var roster = await _rosterService.CreateRosterAsync(model, userId, cancellationToken);
                return Ok(roster);
            }
            catch (ValidationException vex)
            {
                var errors = string.Join(", ", vex.Errors.Select(e => e.ErrorMessage));
                return BadRequest(new Response { Status = "Validation Error", Message = errors });
            }
            catch (UnauthorizedAccessException)
            {
                return Unauthorized(new Response { Status = "Error", Message = "User not authenticated" });
            }
            catch (Exception ex)
            {
                return StatusCode(500, new Response { Status = "Error", Message = _logger.Sanitize(ex) });
            }
        }

        [HttpPut("{companyId:int}")]
        public async Task<IActionResult> Reconcile(
            int companyId,
            [FromBody] ReconcileVendorRosterDTO model,
            CancellationToken cancellationToken)
        {
            var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
            if (userId == null)
                return Unauthorized(new Response { Status = "Error", Message = "User not authenticated" });

            try
            {
                var roster = await _rosterService.ReconcileRosterAsync(companyId, model, userId, cancellationToken);
                return Ok(roster);
            }
            catch (ValidationException vex)
            {
                var errors = string.Join(", ", vex.Errors.Select(e => e.ErrorMessage));
                return BadRequest(new Response { Status = "Validation Error", Message = errors });
            }
            catch (UnauthorizedAccessException)
            {
                return Unauthorized(new Response { Status = "Error", Message = "User not authenticated" });
            }
            catch (KeyNotFoundException)
            {
                return NotFound(new Response { Status = "Error", Message = "Vendor company not found" });
            }
            catch (VendorRosterConflictException conflict)
            {
                return Conflict(new
                {
                    Status = "Conflict",
                    Message = _logger.Sanitize(conflict, "Vendor roster changes conflict with open work orders"),
                    BlockedWorkOrders = conflict.BlockedWorkOrders
                });
            }
            catch (DbUpdateConcurrencyException)
            {
                return Conflict(new
                {
                    Status = "Conflict",
                    Message = "The vendor company was modified by another user. Refresh and retry.",
                    Code = 409
                });
            }
            catch (Exception ex)
            {
                return StatusCode(500, new Response { Status = "Error", Message = _logger.Sanitize(ex) });
            }
        }
    }
}