using System.Collections.Generic;
using Cielonos.MainGame.Map;
using Cielonos.MainGame.UI;
using SLSUtilities.General;
using UnityEngine;

namespace Cielonos.MainGame
{
    public partial class RunManager
    {
        /// <summary>
        /// 管理一局 Run 的创建和销毁。
        /// 这里只负责 RunState 初始化、事件订阅入口和返回 Hub 的清理，不处理单个节点完成或奖励结算。
        /// </summary>
        public class RunSessionSubmodule : SubmoduleBase<RunManager>
        {
            public RunSessionSubmodule(RunManager owner) : base(owner)
            {
            }

            public void StartNewRun()
            {
                if (owner.mapConfig == null)
                {
                    Debug.LogError("[RunManager] mapConfig 未配置，无法开始 Run。");
                    return;
                }

                owner.progressSm.UnsubscribePlayerEvents();
                owner.combatSm.UnsubscribeRoomEvents();

                Randomizer runRng = new Randomizer(MainGameManager.Seed);
                RunMapData mapData = MapGenerator.Generate(owner.mapConfig);
                if (mapData == null)
                {
                    Debug.LogError("[RunManager] 地图生成失败，无法开始 Run。");
                    return;
                }

                owner.currentRun = new RunState
                {
                    randomizer = runRng,
                    mapData = mapData,
                    currentPosition = mapData.startPosition,
                    visitedNodes = new HashSet<Vector2Int> { mapData.startPosition },
                    exhaustedNodes = new HashSet<Vector2Int>(),
                    completedNodes = new HashSet<Vector2Int>(),
                    permanentlyRevealedNodes = new HashSet<Vector2Int>(),
                    permanentlyRevealedTypes = new HashSet<MapNodeType>(),
                    scoutRange = 1,
                    elapsedTime = 0f,
                    roomsCleared = 0,
                    enemiesDefeated = 0,
                    hurtCount = 0,
                    isCompleted = false,
                };

                owner.combatRewardSm.Clear();
                Debug.Log(
                    $"[RunManager] 新一局开始（Seed: {runRng.Seed}），地图节点数：{mapData.totalNodes}，" +
                    $"起点：{mapData.startPosition}，Boss：{mapData.bossPosition}");

                PlayerCanvas.MainGamePages.mapPage.Populate(mapData);
                owner.progressSm.SubscribePlayerEvents();
                owner.combatSm.SubscribeRoomEvents();
                LoadStartZone(mapData);
            }

            public void ReturnToHub()
            {
                owner.progressSm.UnsubscribePlayerEvents();
                owner.combatSm.UnsubscribeRoomEvents();
                owner.combatRewardSm.Clear();
                owner.currentRun = null;
                owner.phaseSm.TransitionToPhase(RunPhase.Idle);
                Debug.Log("[RunManager] 已返回 Hub，RunState 已清理。");
            }

            private void LoadStartZone(RunMapData mapData)
            {
                RunMapNode startNode = mapData.nodes[mapData.startPosition];
                if (startNode.zoneData == null)
                {
                    Debug.LogWarning("[RunManager] 起点节点没有配置 ZoneData，直接进入地图选择。");
                    owner.phaseSm.TransitionToPhase(RunPhase.MapSelection);
                    return;
                }

                owner.phaseSm.TransitionToPhase(RunPhase.Transitioning);
                ZoneSetupMode setupMode = RunNodeTypeUtility.ShouldStartBattleSetup(startNode, isCompleted: false)
                    ? ZoneSetupMode.CombatEncounter
                    : ZoneSetupMode.EnvironmentOnly;
                MapManager.Instance.LoadZone(startNode.zoneData, onComplete: () =>
                {
                    owner.phaseSm.TransitionToPhase(RunPhase.MapSelection);
                }, setupMode: setupMode);
            }
        }
    }
}