using System;
using System.Collections.Generic;
using Cielonos.MainGame.Map;
using Cielonos.MainGame.Rewards;
using Sirenix.OdinInspector;
using SLSUtilities.General;
using UnityEngine;

namespace Cielonos.MainGame
{
    /// <summary>
    /// 驱动整局 Roguelite Run 的会话管理器。
    /// 对外保持原有 RunManager API，对内将生命周期、节点流程、奖励、统计等职责拆分给 Submodule。
    /// </summary>
    public partial class RunManager : Singleton<RunManager>, ISubstructureOwner
    {
        [TitleGroup("配置")]
        [Tooltip("地图生成配置")]
        public MapGenerationConfig mapConfig;

        [TitleGroup("运行时状态"), ReadOnly]
        public RunState currentRun;

        [TitleGroup("运行时状态"), ReadOnly]
        public RunPhase currentPhase = RunPhase.Idle;

        [ShowInInspector, FoldoutGroup("Submodules"), ReadOnly]
        private RunSessionSubmodule sessionSm;

        [ShowInInspector, FoldoutGroup("Submodules"), ReadOnly]
        private RunPhaseSubmodule phaseSm;

        [ShowInInspector, FoldoutGroup("Submodules"), ReadOnly]
        private RunNodeFlowSubmodule nodeFlowSm;

        [ShowInInspector, FoldoutGroup("Submodules"), ReadOnly]
        private RunCombatSubmodule combatSm;

        [ShowInInspector, FoldoutGroup("Submodules"), ReadOnly]
        private RunCombatRewardSubmodule combatRewardSm;

        [ShowInInspector, FoldoutGroup("Submodules"), ReadOnly]
        private RunProgressSubmodule progressSm;

        [ShowInInspector, FoldoutGroup("Submodules"), ReadOnly]
        private RunMapQuerySubmodule mapQuerySm;

        public event Action<RunPhase> OnPhaseChanged;
        public event Action<Vector2Int> OnNodeSelected;
        public event Action<ZoneEntryContext> OnZoneEntered;
        public event Action<RunMapNode> OnCombatRoomCleared;
        public event Action<RunMapNode> OnNodeCompleted;
        public event Action<RunState> OnRunEnded;

        protected override void Awake()
        {
            base.Awake();
            InitializeSubstructures();
        }

        public void InitializeSubstructures()
        {
            InitializeSubmodules();
        }

        private void InitializeSubmodules()
        {
            phaseSm ??= new RunPhaseSubmodule(this);
            combatRewardSm ??= new RunCombatRewardSubmodule(this);
            progressSm ??= new RunProgressSubmodule(this);
            combatSm ??= new RunCombatSubmodule(this);
            nodeFlowSm ??= new RunNodeFlowSubmodule(this);
            mapQuerySm ??= new RunMapQuerySubmodule(this);
            sessionSm ??= new RunSessionSubmodule(this);
        }

        public void StartNewRun() => sessionSm.StartNewRun();

        public void ReturnToHub() => sessionSm.ReturnToHub();

        public void SelectNode(Vector2Int targetPosition) => nodeFlowSm.SelectNode(targetPosition);

        public void CompleteCurrentNode() => nodeFlowSm.CompleteCurrentNode();

        public void RegisterPendingCombatReward() => combatRewardSm.RegisterPendingCombatReward();

        public void RegisterPendingCombatReward(Vector3 spawnPosition) =>
            combatRewardSm.RegisterPendingCombatReward(spawnPosition);

        public bool TryCompletePendingCombatReward() => combatRewardSm.TryCompletePendingCombatReward();

        public void AddCombatRewardModifier(ICombatRewardModifier modifier) =>
            combatRewardSm.AddCombatRewardModifier(modifier);

        public CombatRewardSession GetActiveCombatRewardSession() => combatRewardSm.GetActiveCombatRewardSession();

        public bool HasPendingCombatRewards => combatRewardSm.HasPendingCombatRewards;

        public bool CanSelectMapNodes => mapQuerySm.CanSelectMapNodes;

        public bool IsNormalCombatNode(MapNodeType nodeType) => RunNodeTypeUtility.IsNormalCombatNode(nodeType);

        public bool IsCombatNode(MapNodeType nodeType) => RunNodeTypeUtility.IsCombatNode(nodeType);

        public HashSet<Vector2Int> GetSelectablePositions() => mapQuerySm.GetSelectablePositions();

        public Dictionary<Vector2Int, NodeDisplayState> GetAllNodeDisplayStates() =>
            mapQuerySm.GetAllNodeDisplayStates();

        public bool IsNodeExhausted(Vector2Int position) => mapQuerySm.IsNodeExhausted(position);

        public void IncreaseScoutRange(int amount) => mapQuerySm.IncreaseScoutRange(amount);

        public void RevealNode(Vector2Int position) => mapQuerySm.RevealNode(position);

        public void RevealNodeType(MapNodeType nodeType) => mapQuerySm.RevealNodeType(nodeType);

        private void Update()
        {
            progressSm.TickElapsedTime();
        }

        internal void RaisePhaseChanged(RunPhase phase) => OnPhaseChanged?.Invoke(phase);

        internal void RaiseNodeSelected(Vector2Int position) => OnNodeSelected?.Invoke(position);

        internal void RaiseZoneEntered(ZoneEntryContext context) => OnZoneEntered?.Invoke(context);

        internal void RaiseCombatRoomCleared(RunMapNode node) => OnCombatRoomCleared?.Invoke(node);

        internal void RaiseNodeCompleted(RunMapNode node) => OnNodeCompleted?.Invoke(node);

        internal void RaiseRunEnded(RunState run) => OnRunEnded?.Invoke(run);
    }

    public enum RunPhase
    {
        Idle,
        MapSelection,
        Transitioning,
        InCombat,
        InShop,
        InRest,
        InMechanical,
        InBoss,
        InEvent,
        Settlement,
    }
}