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

public class Exam : MonoBehaviour
{

    public GameObject Obj_Menu, Obj_Ques, Obj_End;
    public AudioSource Aud_Show, Aud_Correct, Aud_Fail;
    public void StartExam()
    {
        if (QuesList.Count <= 0)
            GetAllQuestion();
        Choose();
    }


    List<Question> QuesList = new List<Question>();
    //获取所有题目
    void GetAllQuestion()
    {
        QuesList.Add(new Question("行驶时，货叉底端距离地面高度应保持在（）。", "5-10厘米", "15-20厘米", "30-40厘米", "80-90厘米", "C"));
        QuesList.Add(new Question("叉车行驶时，门架应保持（）", "前倾", "水平", "垂直于地面", "后倾", "D"));
        QuesList.Add(new Question("叉车在车间、仓库空车时车速不得超过（）km/h", "5", "10", "15", "20", "C"));
        QuesList.Add(new Question("叉车在搬运货物时的限速是（）。", "3km/h", "5km/h", "10km/h", "20km/h", "B"));
        QuesList.Add(new Question("以下做法符合叉车安全操作规定的是(  )。", "不准用货叉或货盘带人升高作业", "不准用货叉但可用货盘带人升高作业物", "戴安全带可用货叉带人升高作业", "操作熟练者可用货叉带人升高作业", "A"));
        QuesList.Add(new Question("每天第一位驾驶叉车的员工，驾驶前必须做好(  )工作。", "检查机油", "安全检查", "外观清洁", "热车", "B"));
        QuesList.Add(new Question("驾驶员身体过度疲劳或患病有碍行车安全时，应（ ）。", "缓慢驾驶", "不得驾驶", "技术熟练的可继续驾驶", "小心驾驶", "B"));
        QuesList.Add(new Question("以下允许驾驶叉车的人员是（ ）。", "了解叉车驾驶知识", "有机动车驾驶证", "看过别人驾驶叉车", "参加叉车驾驶培训并获得叉车驾驶证", "D"));
        QuesList.Add(new Question("如果叉车在行驶或装卸时突然发生倾覆，应（ ）。", "向倾覆方向跳出", "向倾覆相反方向跳出", "双手紧握方向盘，身体倾向倾覆相反方向", "蜷缩抱头", "C"));
        QuesList.Add(new Question("以下叉车作业在行驶时行为正确的是（ ）。", "允许将头伸出叉车外观察", "不允许身体任何部位伸出叉车外观察", "允许将头伸向门架与叉车之间观察", "允许下车观察", "B"));
        QuesList.Add(new Question("载货行驶时，应将门架( )。", "降低到合适高度并后倾", "垂直于地面", "保持叉取货物时的高度", "尽量举高以避免遮挡前方视线", "A"));
        QuesList.Add(new Question("以下说法正确的是( )。", "允许人员站在货叉上运载", "不允许人员站立，但可以坐在货叉托盘上", "使用叉车运载人员时应佩戴好安全帽", "不允许使用叉车和货叉运载人员", "D"));
        QuesList.Add(new Question("在安全管理中，下列哪项比较重要？", "发放防暑降温费", "安全培训和教育", "探望负伤人员家属", "及时恢复生产", "B"));
        QuesList.Add(new Question("特种作业人员必须经过（）合格取得操作证方可上岗。", "专业技术培训考试", "文化考试", "体能测试", "听力测试", "A"));
        QuesList.Add(new Question("下列不属于特种作业人员的是（）。", "锅炉司炉工", "厂内机车驾驶员", "钳工", "起重机驾驶员", "C"));
        QuesList.Add(new Question("发现有人受重伤时，首先应（）。", "保持镇静，立刻通知急救员", "带伤者到救助站", "安慰伤者", "保证生产", "A"));
        QuesList.Add(new Question("从业人员在作业过程中应正确佩戴和使用（）。", "卫生用品", "劳动防护用品", "劳动防护工具", "工作服", "B"));
    }
    //随机挑选10题
    int[] RanQues;
    int a;
    void Choose()
    {
        for (a = 0; a < QuesList.Count; a++)
            QuesList[a].ifChoosed = false;
        RanQues = new int[10];
        for (a = 0; a < 10; a++)
        {
            RanQues[a] = Random.Range(0, QuesList.Count);
            while (QuesList[RanQues[a]].ifChoosed)//已被选择
            {
                RanQues[a] = Random.Range(0, QuesList.Count);//继续随机
            }
            QuesList[RanQues[a]].ifChoosed = true;
        }
        Obj_Ques.SetActive(true);
        Obj_End.SetActive(false);
        ShowNum = 0;
        ShowQues();
    }
    bool ifShow;
    int ShowNum = 0;
    public Text Text_Ques, Text_A, Text_B, Text_C, Text_D, Text_Ans;
    public Toggle Tog_A, Tog_B, Tog_C, Tog_D;
    public void ShowQues()
    {
        if (ShowNum < 10)
        {
            //题干
            Text_Ques.text = (ShowNum + 1).ToString() + "." + QuesList[RanQues[ShowNum]].QuesStr;
            //A
            Text_A.text = "A." + QuesList[RanQues[ShowNum]].Option_A;
            //B
            Text_B.text = "B." + QuesList[RanQues[ShowNum]].Option_B;
            //C
            Text_C.text = "C." + QuesList[RanQues[ShowNum]].Option_C;
            //D
            Text_D.text = "D." + QuesList[RanQues[ShowNum]].Option_D;
            //初始化
            Tog_A.isOn = false;
            Tog_B.isOn = false;
            Tog_C.isOn = false;
            Tog_D.isOn = false;
            Text_A.color = Color.white;
            Text_B.color = Color.white;
            Text_C.color = Color.white;
            Text_D.color = Color.white;
            Text_Ans.text = "";
            Aud_Show.Play();
            ifShow = true;
        }
        else
        {
            Obj_Ques.SetActive(false);
            Obj_End.SetActive(true);
            Invoke("ReloadScene", 2);
        }
    }
    public void ChooseOption(string answer)
    {
        if (ifShow)
        {
            if (answer == QuesList[RanQues[ShowNum]].Answer)
            {
                Aud_Correct.Play();
                
            }
            else//答错
            {
                Aud_Fail.Play();
                //正确答案
                Text_Ans.text = "正确答案：" + QuesList[RanQues[ShowNum]].Answer;
                Text_A.color = Color.red;
                Text_B.color = Color.red;
                Text_C.color = Color.red;
                Text_D.color = Color.red;
                switch (QuesList[RanQues[ShowNum]].Answer)
                {
                    case "A":
                        Text_A.color = Color.green;
                        break;
                    case "B":
                        Text_B.color = Color.green;
                        break;
                    case "C":
                        Text_C.color = Color.green;
                        break;
                    case "D":
                        Text_D.color = Color.green;
                        break;
                }
            }
            ShowNum++;
            ifShow = false;
            Invoke("ShowQues", 3);
        }
    }
    void Menu()
    {
        gameObject.SetActive(false);
        Obj_Menu.SetActive(true);
    }
    class Question
    {
        public string QuesStr;
        public string Option_A, Option_B, Option_C, Option_D;
        public string Answer;
        public bool ifChoosed;

        public Question(string s1, string s2, string s3, string s4, string s5, string s6)
        {
            QuesStr = s1;
            Option_A = s2;
            Option_B = s3;
            Option_C = s4;
            Option_D = s5;
            Answer = s6;

        }
    }
    void ReloadScene()
    {
        SceneManager.LoadScene(0);
    }
}