using foodmarket.Application.Catalog;
using foodmarket.Application.Common;
using foodmarket.Domain.Catalog;
using foodmarket.Infrastructure.Persistence;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;

namespace foodmarket.Api.Controllers.Catalog;

[ApiController]
[Authorize]
[Route("api/catalog/units-of-measure")]
public class UnitsOfMeasureController : ControllerBase
{
    private readonly AppDbContext _db;

    public UnitsOfMeasureController(AppDbContext db) => _db = db;

    [HttpGet]
    public async Task<ActionResult<PagedResult<UnitOfMeasureDto>>> List([FromQuery] PagedRequest req, CancellationToken ct)
    {
        var q = _db.UnitsOfMeasure.AsNoTracking().AsQueryable();
        if (!string.IsNullOrWhiteSpace(req.Search))
        {
            var s = req.Search.Trim().ToLower();
            q = q.Where(u => u.Name.ToLower().Contains(s) || u.Symbol.ToLower().Contains(s) || u.Code.ToLower().Contains(s));
        }
        var total = await q.CountAsync(ct);
        var items = await q
            .OrderByDescending(u => u.IsBase).ThenBy(u => u.Name)
            .Skip(req.Skip).Take(req.Take)
            .Select(u => new UnitOfMeasureDto(u.Id, u.Code, u.Symbol, u.Name, u.DecimalPlaces, u.IsBase, u.IsActive))
            .ToListAsync(ct);
        return new PagedResult<UnitOfMeasureDto> { Items = items, Total = total, Page = req.Page, PageSize = req.Take };
    }

    [HttpGet("{id:guid}")]
    public async Task<ActionResult<UnitOfMeasureDto>> Get(Guid id, CancellationToken ct)
    {
        var u = await _db.UnitsOfMeasure.AsNoTracking().FirstOrDefaultAsync(x => x.Id == id, ct);
        return u is null ? NotFound() : new UnitOfMeasureDto(u.Id, u.Code, u.Symbol, u.Name, u.DecimalPlaces, u.IsBase, u.IsActive);
    }

    [HttpPost, Authorize(Roles = "Admin,Manager")]
    public async Task<ActionResult<UnitOfMeasureDto>> Create([FromBody] UnitOfMeasureInput input, CancellationToken ct)
    {
        if (input.IsBase)
        {
            await _db.UnitsOfMeasure.Where(u => u.IsBase).ExecuteUpdateAsync(s => s.SetProperty(u => u.IsBase, false), ct);
        }

        var e = new UnitOfMeasure
        {
            Code = input.Code,
            Symbol = input.Symbol,
            Name = input.Name,
            DecimalPlaces = input.DecimalPlaces,
            IsBase = input.IsBase,
            IsActive = input.IsActive,
        };
        _db.UnitsOfMeasure.Add(e);
        await _db.SaveChangesAsync(ct);
        return CreatedAtAction(nameof(Get), new { id = e.Id },
            new UnitOfMeasureDto(e.Id, e.Code, e.Symbol, e.Name, e.DecimalPlaces, e.IsBase, e.IsActive));
    }

    [HttpPut("{id:guid}"), Authorize(Roles = "Admin,Manager")]
    public async Task<IActionResult> Update(Guid id, [FromBody] UnitOfMeasureInput input, CancellationToken ct)
    {
        var e = await _db.UnitsOfMeasure.FirstOrDefaultAsync(x => x.Id == id, ct);
        if (e is null) return NotFound();

        if (input.IsBase && !e.IsBase)
        {
            await _db.UnitsOfMeasure.Where(u => u.IsBase && u.Id != id).ExecuteUpdateAsync(s => s.SetProperty(u => u.IsBase, false), ct);
        }

        e.Code = input.Code;
        e.Symbol = input.Symbol;
        e.Name = input.Name;
        e.DecimalPlaces = input.DecimalPlaces;
        e.IsBase = input.IsBase;
        e.IsActive = input.IsActive;
        await _db.SaveChangesAsync(ct);
        return NoContent();
    }

    [HttpDelete("{id:guid}"), Authorize(Roles = "Admin")]
    public async Task<IActionResult> Delete(Guid id, CancellationToken ct)
    {
        var e = await _db.UnitsOfMeasure.FirstOrDefaultAsync(x => x.Id == id, ct);
        if (e is null) return NotFound();
        _db.UnitsOfMeasure.Remove(e);
        await _db.SaveChangesAsync(ct);
        return NoContent();
    }
}