using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using FSEvent;

// 战场相关
namespace FSBattle {
    // 战场回合状态
    public enum BattleFieldRound {
        BATTLE_FIELD_READY_GAME         = 0X0010001,     // 游戏准备
        BATTLE_FIELD_PLAYER_PLAY_A_HAND = 0X0010002,     // 玩家出牌
        BATTLE_FIELD_ENEMY_ACTION       = 0X0010003,     // 敌人行动
        BATTLE_FIELD_ROUND_END          = 0X0010004,     // 回合结束
    }

    // 战场组件
    public class BattleField : MonoBehaviour {
        // 记录战场状态
        private BattleFieldRound round = BattleFieldRound.BATTLE_FIELD_READY_GAME;

        // Use this for initialization
        void Start() {
            InitEvent();

            Invoke("ReadyHandle", 1.0f);
        }

        // Update is called once per frame
        void Update() {

        }

        private void OnDestroy() {
            RemoveEvent();
        }

        /*
         * 注册事件
        */
        private void InitEvent() {
            EventListener.Instance.RegisterEvent(EventEnum.EVENT_ENTER_ENEMY_ACTION_ROUND, EnterEnemyRound);
            EventListener.Instance.RegisterEvent(EventEnum.EVENT_ENTER_PLAY_A_HAND_ROUND, EnterPlayAHandRound);
        }

        /*
         * 移除事件
        */
        private void RemoveEvent() {
            EventListener.Instance.RemoveEvent(EventEnum.EVENT_ENTER_ENEMY_ACTION_ROUND);
            EventListener.Instance.RemoveEvent(EventEnum.EVENT_ENTER_PLAY_A_HAND_ROUND);
        }

        /*
         * 进入下一个回合
        */
        public void NextRound() {
            // 回合循环转化
            switch (round) {
                case BattleFieldRound.BATTLE_FIELD_READY_GAME:
                    print("出牌 ... ");
                    round = BattleFieldRound.BATTLE_FIELD_PLAYER_PLAY_A_HAND;
                    EventListener.Instance.PostEvent(EventEnum.EVENT_SHOW_CARD_PANEL);
                    break;

                case BattleFieldRound.BATTLE_FIELD_PLAYER_PLAY_A_HAND:
                    print("敌人行动 ... ");
                    round = BattleFieldRound.BATTLE_FIELD_ENEMY_ACTION;
                    EnemyRoundHandle();
                    break;

                case BattleFieldRound.BATTLE_FIELD_ENEMY_ACTION:
                    print("回合结束 ... ");
                    round = BattleFieldRound.BATTLE_FIELD_ROUND_END;
                    EventListener.Instance.PostEvent(EventEnum.EVENT_CLEAR_CARDS);
                    break;

                case BattleFieldRound.BATTLE_FIELD_ROUND_END:
                    print("出牌 ... ");
                    round = BattleFieldRound.BATTLE_FIELD_PLAYER_PLAY_A_HAND;
                    EventListener.Instance.PostEvent(EventEnum.EVENT_SHOW_CARD_PANEL);
                    break;
            }
        }

        /*
         * 准备游戏回合的事件处理 
        */
        private void ReadyHandle() {
            // 通过消息中心，发布带参数的消息
            Dictionary<string, object> info = new Dictionary<string, object>();
            info.Add("remind", "准备中 ... ");

            EventListener.Instance.PostEvent(EventEnum.EVENT_UPDATE_ROUND_TEXT, info);

            // 过1秒后进入下一回合
            Invoke("NextRound", 1.0f);
        }

        /*
         * 进入敌人行动的回合
        */
        private void EnterEnemyRound() {
            // 首先得保证上一个回合是出牌回合
            if (round == BattleFieldRound.BATTLE_FIELD_PLAYER_PLAY_A_HAND) {
                NextRound();
            }
        }

        /*
         * 处理敌人行动的回合
        */
        private void EnemyRoundHandle() {
            // 暂时不处理，过5秒后切换下一回合
            Invoke("NextRound", 2.0f);
        }

        /*
         * 回合轮回，重新开始
        */
        private void EnterPlayAHandRound() {
            // 首先需要保证上一个回合是结束回合
            if (round == BattleFieldRound.BATTLE_FIELD_ROUND_END) {
                NextRound();
            }
        }
    }
}