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

namespace HuntingAppApi.Controllers;

[ApiController]
[Authorize]
[Route("api/locations")]
public sealed class LocationsController(NpgsqlDataSource dataSource) : ControllerBase
{
    [HttpPost]
    public async Task<IActionResult> Upsert([FromBody] UpsertLocationRequest request, CancellationToken ct)
    {
        await using var conn = await dataSource.OpenConnectionAsync(ct);
        await using var tx = await conn.BeginTransactionAsync(ct);

        await using (var current = new NpgsqlCommand("""
            INSERT INTO user_current_location
                (participant_id, geom, accuracy_m, speed_mps, heading_degrees, battery_percent, recorded_at)
            VALUES
                (@participant_id, ST_SetSRID(ST_MakePoint(@longitude, @latitude), 4326), @accuracy_m,
                 @speed_mps, @heading_degrees, @battery_percent, @recorded_at)
            ON CONFLICT (participant_id) DO UPDATE SET
                geom = EXCLUDED.geom,
                accuracy_m = EXCLUDED.accuracy_m,
                speed_mps = EXCLUDED.speed_mps,
                heading_degrees = EXCLUDED.heading_degrees,
                battery_percent = EXCLUDED.battery_percent,
                recorded_at = EXCLUDED.recorded_at,
                received_at = now()
        """, conn, tx))
        {
            AddLocationParams(current, request);
            await current.ExecuteNonQueryAsync(ct);
        }

        await using (var history = new NpgsqlCommand("""
            INSERT INTO user_location_history
                (participant_id, geom, accuracy_m, speed_mps, heading_degrees, battery_percent, recorded_at)
            VALUES
                (@participant_id, ST_SetSRID(ST_MakePoint(@longitude, @latitude), 4326), @accuracy_m,
                 @speed_mps, @heading_degrees, @battery_percent, @recorded_at)
        """, conn, tx))
        {
            AddLocationParams(history, request);
            await history.ExecuteNonQueryAsync(ct);
        }

        await tx.CommitAsync(ct);
        return NoContent();
    }

    private static void AddLocationParams(NpgsqlCommand cmd, UpsertLocationRequest request)
    {
        cmd.Parameters.AddWithValue("participant_id", request.ParticipantId);
        cmd.Parameters.AddWithValue("longitude", request.Longitude);
        cmd.Parameters.AddWithValue("latitude", request.Latitude);
        cmd.Parameters.AddWithValue("accuracy_m", (object?)request.AccuracyM ?? DBNull.Value);
        cmd.Parameters.AddWithValue("speed_mps", (object?)request.SpeedMps ?? DBNull.Value);
        cmd.Parameters.AddWithValue("heading_degrees", (object?)request.HeadingDegrees ?? DBNull.Value);
        cmd.Parameters.AddWithValue("battery_percent", (object?)request.BatteryPercent ?? DBNull.Value);
        cmd.Parameters.AddWithValue("recorded_at", request.RecordedAt);
    }
}