using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Rendering;
using Microsoft.EntityFrameworkCore;
using ThAmCo.Events.Data;
using ThAmCo.Events.Models;

namespace ThAmCo.Events.Controllers
{
    public class CustomersController : Controller
    {
        private readonly EventsDbContext _context;

        public CustomersController(EventsDbContext context)
        {
            _context = context;
        }

        // GET: Customers
        public async Task<IActionResult> Index()
        {
            return View(await _context.Customers.Where(c => c.IsDeleted == false).ToListAsync());
        }

        // GET: Customers/Details/5
        public async Task<IActionResult> Details(int? id)
        {
            if (id == null)
            {
                return NotFound();
            }

            var customer = await _context.Customers
                .FirstOrDefaultAsync(m => m.Id == id);
            customer.Bookings = _context.Guests.Include(m => m.Event).Where(m => m.CustomerId == id).ToList();
            if (customer == null)
            {
                return NotFound();
            }

            return View(customer);
        }

        // GET: Customers/Create
        public IActionResult Create()
        {
            ViewData["EventLists"] = new SelectList(_context.Events, "Id", "Title");
            return View();
        }

        // POST: Customers/Create
        // To protect from overposting attacks, please enable the specific properties you want to bind to, for 
        // more details see http://go.microsoft.com/fwlink/?LinkId=317598.
        [HttpPost]
        [ValidateAntiForgeryToken]
        public async Task<IActionResult> Create([Bind("Id,Surname,FirstName,Email,InitialEvent")] CustomerCreateModel customerCreate)
        {
            Customer customer = null;
            GuestBooking guestBooking = null;
            if (ModelState.IsValid)
            {
                customer = new Customer
                {
                    Surname = customerCreate.Surname,
                    FirstName = customerCreate.FirstName,
                    Email = customerCreate.Email
                };
                var customerContext = _context.Add(customer);
                int custID = customerContext.Entity.Id;

                //A booking is created at the same time as a customer.
                guestBooking = new GuestBooking
                {
                    CustomerId = custID,
                    EventId = customerCreate.InitialEvent,
                    Attended = true
                };
                _context.Add(guestBooking);
                await _context.SaveChangesAsync();
                return RedirectToAction(nameof(Index));
            }
            return View(customer);
        }

        // GET: Customers/Edit/5
        public async Task<IActionResult> Edit(int? id)
        {
            if (id == null)
            {
                return NotFound();
            }

            var customer = await _context.Customers.FindAsync(id);
            if (customer == null)
            {
                return NotFound();
            }
            return View(customer);
        }

        // POST: Customers/Edit/5
        // To protect from overposting attacks, please enable the specific properties you want to bind to, for 
        // more details see http://go.microsoft.com/fwlink/?LinkId=317598.
        [HttpPost]
        [ValidateAntiForgeryToken]
        public async Task<IActionResult> Edit(int id, [Bind("Id,Surname,FirstName,Email")] Customer customer)
        {
            if (id != customer.Id)
            {
                return NotFound();
            }

            if (ModelState.IsValid)
            {
                try
                {
                    _context.Update(customer);
                    await _context.SaveChangesAsync();
                }
                catch (DbUpdateConcurrencyException)
                {
                    if (!CustomerExists(customer.Id))
                    {
                        return NotFound();
                    }
                    else
                    {
                        throw;
                    }
                }
                return RedirectToAction(nameof(Index));
            }
            return View(customer);
        }

        // GET: Customers/Delete/5
        public async Task<IActionResult> Delete(int? id)
        {
            if (id == null)
            {
                return NotFound();
            }

            var customer = await _context.Customers
                .FirstOrDefaultAsync(m => m.Id == id);
            if (customer == null)
            {
                return NotFound();
            }

            return View(customer);
        }

        // POST: Customers/Delete/5
        [HttpPost, ActionName("Delete")]
        [ValidateAntiForgeryToken]
        public async Task<IActionResult> DeleteConfirmed(int id)
        {
            var customer = await _context.Customers.FindAsync(id);
            customer.IsDeleted = true;

            _context.Customers.Update(customer);
            await _context.SaveChangesAsync();
            return RedirectToAction(nameof(Index));
        }

        [HttpPost, ActionName("AnonDelete")]
        [ValidateAntiForgeryToken]
        public async Task<IActionResult> AnonDeleteConfirmed(int id)
        {
            var customer = await _context.Customers.FindAsync(id);
            customer.FirstName = "[Redacted]";
            customer.Surname = "[Redacted]";
            customer.Email = "[Redacted]";
            customer.IsDeleted = true;

            _context.Customers.Update(customer);
            await _context.SaveChangesAsync();
            return RedirectToAction(nameof(Index));
        }

        private bool CustomerExists(int id)
        {
            return _context.Customers.Any(e => e.Id == id);
        }
    }
}