using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using Massenger.Server.Data;
using Massenger.Server.Infrastructure;
using Massenger.Shared;

namespace Massenger.Server.Controllers;

[ApiController]
[Authorize]
[Route("api/[controller]")]
public sealed class UsersController(
    MassengerDbContext dbContext,
    PresenceTracker presenceTracker) : ControllerBase
{
    [HttpGet("me")]
    public async Task<ActionResult<UserSummaryDto>> GetMe(CancellationToken cancellationToken)
    {
        var userId = User.GetRequiredUserId();
        var user = await dbContext.Users.SingleAsync(x => x.Id == userId, cancellationToken);
        return Ok(user.ToDto(presenceTracker));
    }

    [HttpGet("search")]
    public async Task<ActionResult<IReadOnlyList<UserSummaryDto>>> Search([FromQuery] string? q, CancellationToken cancellationToken)
    {
        var userId = User.GetRequiredUserId();
        var query = q?.Trim();

        var usersQuery = dbContext.Users.Where(x => x.Id != userId);
        if (!string.IsNullOrWhiteSpace(query))
        {
            var normalized = query.ToUpperInvariant();
            usersQuery = usersQuery.Where(x =>
                x.NormalizedUsername.Contains(normalized) ||
                EF.Functions.Like(x.DisplayName, $"%{query}%"));
        }

        var users = await usersQuery
            .OrderBy(x => x.DisplayName)
            .Take(25)
            .ToListAsync(cancellationToken);

        return Ok(users.Select(x => x.ToDto(presenceTracker)).ToList());
    }
}