// src/Webshop.Api/Controllers/Customer/AddressesController.cs
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using System;
using System.Collections.Generic;
using System.Security.Claims;
using System.Threading.Tasks;
using Webshop.Application;
using Webshop.Application.DTOs.Customers;
using Webshop.Application.Services.Customers;

namespace Webshop.Api.Controllers.Customer
{
    [ApiController]
    [Route("api/v1/customer/[controller]")]
    [Authorize(Roles = "Customer")]
    public class AddressesController : ControllerBase
    {
        private readonly IAddressService _addressService;

        public AddressesController(IAddressService addressService)
        {
            _addressService = addressService;
        }

        [HttpGet]
        [ProducesResponseType(typeof(IEnumerable<AddressDto>), StatusCodes.Status200OK)]
        public async Task<IActionResult> GetMyAddresses()
        {
            var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
            var result = await _addressService.GetMyAddressesAsync(userId!);
            return Ok(result.Value);
        }

        [HttpGet("{id}")]
        [ProducesResponseType(typeof(AddressDto), StatusCodes.Status200OK)]
        [ProducesResponseType(StatusCodes.Status403Forbidden)]
        [ProducesResponseType(StatusCodes.Status404NotFound)]
        public async Task<IActionResult> GetMyAddressById(Guid id)
        {
            var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
            var result = await _addressService.GetMyAddressByIdAsync(id, userId!);

            return result.Type switch
            {
                ServiceResultType.Success => Ok(result.Value),
                ServiceResultType.Forbidden => Forbid(),
                ServiceResultType.NotFound => NotFound(new { Message = result.ErrorMessage }),
                _ => StatusCode(StatusCodes.Status500InternalServerError, "Ein unerwarteter Fehler ist aufgetreten.")
            };
        }

        [HttpPost]
        [ProducesResponseType(typeof(AddressDto), StatusCodes.Status201Created)]
        [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status400BadRequest)]
        public async Task<IActionResult> CreateAddress([FromBody] CreateAddressDto addressDto)
        {
            if (!ModelState.IsValid) return BadRequest(ModelState);

            var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
            var result = await _addressService.CreateAddressAsync(addressDto, userId!);

            return result.Type switch
            {
                ServiceResultType.Success => CreatedAtAction(nameof(GetMyAddressById), new { id = result.Value!.Id }, result.Value),
                _ => BadRequest(new { Message = result.ErrorMessage })
            };
        }

        [HttpPut("{id}")]
        [ProducesResponseType(StatusCodes.Status204NoContent)]
        [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status400BadRequest)]
        [ProducesResponseType(StatusCodes.Status403Forbidden)]
        [ProducesResponseType(StatusCodes.Status404NotFound)]
        public async Task<IActionResult> UpdateAddress(Guid id, [FromBody] UpdateAddressDto addressDto)
        {
            if (id != addressDto.Id) return BadRequest(new { Message = "ID in der URL und im Body stimmen nicht überein." });
            if (!ModelState.IsValid) return BadRequest(ModelState);

            var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
            var result = await _addressService.UpdateAddressAsync(addressDto, userId!);

            return result.Type switch
            {
                ServiceResultType.Success => NoContent(),
                ServiceResultType.Forbidden => Forbid(),
                ServiceResultType.NotFound => NotFound(new { Message = result.ErrorMessage }),
                _ => BadRequest(new { Message = result.ErrorMessage })
            };
        }

        [HttpDelete("{id}")]
        [ProducesResponseType(StatusCodes.Status204NoContent)]
        [ProducesResponseType(StatusCodes.Status403Forbidden)]
        [ProducesResponseType(StatusCodes.Status404NotFound)]
        public async Task<IActionResult> DeleteAddress(Guid id)
        {
            var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
            var result = await _addressService.DeleteAddressAsync(id, userId!);

            return result.Type switch
            {
                ServiceResultType.Success => NoContent(),
                ServiceResultType.Forbidden => Forbid(),
                ServiceResultType.NotFound => NotFound(new { Message = result.ErrorMessage }),
                _ => BadRequest(new { Message = result.ErrorMessage })
            };
        }

        [HttpPost("default-shipping/{id}")]
        [ProducesResponseType(StatusCodes.Status200OK)]
        [ProducesResponseType(StatusCodes.Status403Forbidden)]
        [ProducesResponseType(StatusCodes.Status404NotFound)]
        public async Task<IActionResult> SetDefaultShippingAddress(Guid id)
        {
            var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
            var result = await _addressService.SetDefaultShippingAddressAsync(id, userId!);

            return result.Type switch
            {
                ServiceResultType.Success => Ok(),
                ServiceResultType.Forbidden => Forbid(),
                ServiceResultType.NotFound => NotFound(new { Message = result.ErrorMessage }),
                _ => BadRequest(new { Message = result.ErrorMessage })
            };
        }

        [HttpPost("default-billing/{id}")]
        [ProducesResponseType(StatusCodes.Status200OK)]
        [ProducesResponseType(StatusCodes.Status403Forbidden)]
        [ProducesResponseType(StatusCodes.Status404NotFound)]
        public async Task<IActionResult> SetDefaultBillingAddress(Guid id)
        {
            var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
            var result = await _addressService.SetDefaultBillingAddressAsync(id, userId!);

            return result.Type switch
            {
                ServiceResultType.Success => Ok(),
                ServiceResultType.Forbidden => Forbid(),
                ServiceResultType.NotFound => NotFound(new { Message = result.ErrorMessage }),
                _ => BadRequest(new { Message = result.ErrorMessage })
            };
        }
    }
}