using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

//学员分组训练控制器  组编号等groupsList index+1
public class GroupManager 
{
    StudentContentCtrl contentCtrl;// 可获取图标所代表学员的状态和数据
    public GroupManager(StudentContentCtrl studentContent)
    {
        contentCtrl = studentContent;
    }

    List<GOGroup> groups = new List<GOGroup>();
    /// <summary>
    /// 将一些学员创建为一个编组  并返回创建结果
    /// </summary>
    /// <param name="selectStudents"></param>
    public string CreatGroup(List<OnlineStudent> selectStudents)
    {
        for (int i = 0; i < selectStudents.Count; i++)//遍历学员是否满足编组条件
        {
            if (selectStudents[i].groupNumber != -1)
            {
                return "无法为已有编组的学员再次编组";
            }
            if (selectStudents[i].state != LearnState.waiting)
            {
                return "无法为训练中的学员进行编组";
            }
        }
        int number = groups.Count + 1;
        groups.Add(new GOGroup(selectStudents, number, OnGroupDestroy,contentCtrl));//创建一个新的编组
        return null;
    }

    /// <summary>
    /// 选择一些学员移除编组
    /// </summary>
    /// <param name="selectStudents"></param>
    public string RemoveGroup(List<OnlineStudent> selectStudents)
    {
        for (int i = 0; i < selectStudents.Count; i++)
        {
            if (selectStudents[i].groupNumber != -1)
            {
                 groups[selectStudents[i].groupNumber - 1].Remove(selectStudents[i]);
            }
        }
        return null;
    }

    /// <summary>
    /// 选择一些学员 点击添加编组
    /// </summary>
    /// <returns></returns>
    public string AddGroup()
    {

        return null;
    }

    /// <summary>
    /// 设置组长
    /// </summary>
    /// <param name="selectStudents"></param>
    /// <returns></returns>
    public string SetMaster(List<OnlineStudent> selectStudents)
    {
        if (selectStudents.Count > 1)
            return "组长不能为多人";
        if (selectStudents[0].groupNumber==-1)
            return "未分组的人员无法设为组长";
        groups[selectStudents[0].groupNumber - 1].SetMaster(selectStudents[0]);
        return null;
    }

    /// <summary>
    /// 获取组内所有人员
    /// </summary>
    /// <param name="groupNumber">组编号</param>
    /// <returns></returns>
    public List<OnlineStudent> GetGroupStudents(int groupNumber)
    {
        return groups[groupNumber - 1].GetAllStudent();
    }

    //组销毁执行方法
    private void OnGroupDestroy(int number)
    {
        groups.RemoveAt(number - 1);
    }

}