using LendWise.Web.Data;
using LendWise.Web.Models;
using LendWise.Web.Services;
using Microsoft.AspNetCore.Mvc;

namespace LendWise.Web.Controllers;

[Route("apply")]
public class ApplyController(AppDbContext db, ProductCatalog catalog, ILogger<ApplyController> logger) : Controller
{
    private static readonly string[] ApplicantTypes = ["Salaried", "Self-employed"];

    [HttpGet("")]
    public IActionResult Index(string? product)
    {
        var model = new ApplyViewModel { ProductSlug = catalog.Find(product)?.Slug };
        return View(model);
    }

    [HttpPost("")]
    [ValidateAntiForgeryToken]
    public async Task<IActionResult> Index(ApplyViewModel model)
    {
        // Bots fill the hidden field; send them to the thank-you page without saving anything.
        if (!string.IsNullOrWhiteSpace(model.Website))
        {
            return RedirectToAction(nameof(Thanks), new { id = 0 });
        }

        if (catalog.Find(model.ProductSlug) is null)
        {
            ModelState.AddModelError(nameof(model.ProductSlug), "Choose a loan type.");
        }

        if (model.ApplicantType is null || !ApplicantTypes.Contains(model.ApplicantType))
        {
            ModelState.AddModelError(nameof(model.ApplicantType), "Choose one option.");
        }

        if (!ModelState.IsValid)
        {
            return View(model);
        }

        var lead = new LoanLead
        {
            FullName = model.FullName.Trim(),
            Mobile = model.Mobile.Trim(),
            Email = model.Email.Trim(),
            City = model.City.Trim(),
            ApplicantType = model.ApplicantType!,
            ProductSlug = model.ProductSlug!,
            Amount = model.Amount ?? 0,
            MonthlyIncome = model.MonthlyIncome ?? 0,
            IpAddress = HttpContext.Connection.RemoteIpAddress?.ToString()
        };

        try
        {
            db.LoanLeads.Add(lead);
            await db.SaveChangesAsync();
        }
        catch (Exception ex)
        {
            logger.LogError(ex, "Could not save loan application.");
            ModelState.AddModelError(string.Empty, "We could not save your request just now. Please try again in a few minutes.");
            return View(model);
        }

        return RedirectToAction(nameof(Thanks), new { id = lead.Id });
    }

    [HttpGet("thanks/{id:int}")]
    public IActionResult Thanks(int id)
    {
        ViewData["Reference"] = id > 0 ? $"LW-{id:D6}" : null;
        return View();
    }
}