using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using RadicadeServer.DB;
using RadicadeServer.Extensions;
using RadicadeServer.RecNet.Royale;

namespace RadicadeServer.API.Royale.V2
{
    [Route("api/royale/v2")]
    public class RoyaleV2(RecDBContext db) : Controller
    {
        private static int PlacementXp(int rank)
        {
            if (rank <= 0) return 10;
            if (rank == 1) return 50;
            if (rank <= 3) return 30;
            if (rank <= 8) return 15;
            return 10;
        }

        [HttpPost("matchcomplete"), Authorize]
        public async Task<ActionResult<RoyaleMatchCompleteResponse>> MatchComplete([FromBody] RoyaleMatchCompleteStats? stats)
        {
            var userId = User.GetUserId();
            if (userId == null) return Unauthorized();
            if (stats == null) return BadRequest();

            var awardStrings = new List<string>();
            int totalXp = 0;

            if (!stats.CustomGame)
            {
                int placement = PlacementXp(stats.Rank);
                totalXp += placement;
                awardStrings.Add($"Match finished: +{placement} XP");

                if (stats.NumEliminations > 0)
                {
                    int elimXp = Math.Min(stats.NumEliminations, 5) * 10;
                    totalXp += elimXp;
                    awardStrings.Add($"Eliminations: +{elimXp} XP");
                }

                if (stats.ChestsOpened > 0)
                {
                    int chestXp = Math.Min(stats.ChestsOpened, 10) * 2;
                    totalXp += chestXp;
                    awardStrings.Add($"Chests opened: +{chestXp} XP");
                }
            }
            else
            {
                awardStrings.Add("Custom game: no XP awarded");
            }

            long xpBefore = await CurrentXp(userId.Value);
            var progress = await RoyaleShared.AwardXpAsync(db, userId.Value, totalXp, "Rec Royale match", awardStrings);

            var response = new RoyaleMatchCompleteResponse
            {
                XPAwardStrings = awardStrings,
                TotalXPAwarded = progress.TotalXP - xpBefore,
                NewProgress = new List<RoyaleProgressDTO> { progress }
            };
            return Ok(response);
        }

        private async Task<long> CurrentXp(long playerId)
        {
            var data = await db.Progression.AsNoTracking().FirstOrDefaultAsync(x => x.PlayerId == playerId);
            return data?.XP ?? 0;
        }
    }
}