using HuntingAppApi.Models;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Npgsql;

namespace HuntingAppApi.Controllers;

[ApiController]
[Authorize]
[Route("api/hunt-areas")]
public sealed class HuntAreasController(NpgsqlDataSource dataSource) : ControllerBase
{
    [HttpGet]
    public async Task<ActionResult<List<HuntAreaDto>>> GetAll(CancellationToken ct)
    {
        var result = new List<HuntAreaDto>();
        await using var conn = await dataSource.OpenConnectionAsync(ct);
        await using var cmd = new NpgsqlCommand("""
            SELECT id, name, description, CASE WHEN geom IS NULL THEN NULL ELSE ST_AsGeoJSON(geom) END
            FROM hunt_area
            ORDER BY name
        """, conn);
        await using var r = await cmd.ExecuteReaderAsync(ct);
        while (await r.ReadAsync(ct))
        {
            result.Add(new HuntAreaDto
            {
                Id = r.GetGuid(0),
                Name = r.GetString(1),
                Description = r.IsDBNull(2) ? null : r.GetString(2),
                GeoJson = r.IsDBNull(3) ? null : r.GetString(3)
            });
        }
        return Ok(result);
    }

    [HttpPost]
    public async Task<ActionResult<ApiId>> Create([FromBody] CreateHuntAreaRequest request, CancellationToken ct)
    {
        var id = Guid.NewGuid();
        await using var conn = await dataSource.OpenConnectionAsync(ct);
        await using var cmd = new NpgsqlCommand("""
            INSERT INTO hunt_area (id, name, description, geom)
            VALUES (@id, @name, @description,
                CASE WHEN @geojson::text IS NULL OR @geojson::text = '' THEN NULL
                     ELSE ST_SetSRID(ST_GeomFromGeoJSON(@geojson), 4326)::geometry(MultiPolygon, 4326)
                END)
        """, conn);
        cmd.Parameters.AddWithValue("id", id);
        cmd.Parameters.AddWithValue("name", request.Name);
        cmd.Parameters.AddWithValue("description", (object?)request.Description ?? DBNull.Value);
        cmd.Parameters.AddWithValue("geojson", (object?)request.GeoJson ?? DBNull.Value);
        await cmd.ExecuteNonQueryAsync(ct);
        return Ok(new ApiId(id));
    }
}