using InboxIntel.Application.Abstractions;
using InboxIntel.Domain.Entities;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;

namespace InboxIntel.Api.Controllers;

public record WidgetLayoutDto(string WidgetKey, int X, int Y, int W, int H, bool Visible, int SortOrder, string? SettingsJson);

/// <summary>Persists the user's draggable/resizable dashboard layout.</summary>
public class WidgetLayoutController : ApiControllerBase
{
    private readonly IAppDbContext _db;
    public WidgetLayoutController(IAppDbContext db) => _db = db;

    [HttpGet]
    public async Task<IActionResult> Get(CancellationToken ct)
    {
        var layouts = await _db.WidgetLayouts
            .Where(w => w.UserId == UserId)
            .OrderBy(w => w.SortOrder)
            .Select(w => new WidgetLayoutDto(w.WidgetKey, w.X, w.Y, w.W, w.H, w.Visible, w.SortOrder, w.SettingsJson))
            .ToListAsync(ct);
        return Ok(layouts);
    }

    /// <summary>Upserts the full layout for the user (replace semantics).</summary>
    [HttpPut]
    public async Task<IActionResult> Save([FromBody] List<WidgetLayoutDto> layout, CancellationToken ct)
    {
        var existing = await _db.WidgetLayouts.Where(w => w.UserId == UserId).ToListAsync(ct);
        var byKey = existing.ToDictionary(w => w.WidgetKey);

        foreach (var dto in layout)
        {
            if (byKey.TryGetValue(dto.WidgetKey, out var w))
            {
                w.X = dto.X; w.Y = dto.Y; w.W = dto.W; w.H = dto.H;
                w.Visible = dto.Visible; w.SortOrder = dto.SortOrder; w.SettingsJson = dto.SettingsJson;
            }
            else
            {
                _db.WidgetLayouts.Add(new WidgetLayout
                {
                    UserId = UserId,
                    WidgetKey = dto.WidgetKey,
                    X = dto.X,
                    Y = dto.Y,
                    W = dto.W,
                    H = dto.H,
                    Visible = dto.Visible,
                    SortOrder = dto.SortOrder,
                    SettingsJson = dto.SettingsJson
                });
            }
        }
        await _db.SaveChangesAsync(ct);
        return NoContent();
    }
}