//*********************
// create by 流云
// time: 2025.4.10
// desc: 答题模块
//*********************
import { game } from "cc";

/**
 * 答题模块
 */
export class AnswerQuestions {

    /**
     * 选择事件
     */
    static readonly EVENT_SELECT = "AnswerQuestions.EVENT_SELECT";
    /**
     * 一组答题结束事件
     */
    static readonly EVENT_END = "AnswerQuestions.EVENT_END";

    /**
     * 问题
     */
    Questions: Question[] = [];
    /**
     * 当前
     */
    Curent: Question = null;

    /**
     * 是否自动下一个
     */
    private _autoNext: boolean = false;

    /**
     * 初始化
     */
    init(Questions: Question[], autoNext: boolean = false) {
        this.Questions = Questions;
        this._autoNext = autoNext;
        this.Curent = null;
    }

    /**
     * 下一个
     */
    next() {
        let index = this.Questions.indexOf(this.Curent);
        if (index < this.Questions.length - 1) {
            this.Curent = this.Questions[index + 1];
        } else {
            this.Curent = null;
            game.emit(AnswerQuestions.EVENT_END);
        }
    }

    /**
     * 选择
     * @param questionStr 问题
     * @param selectItemStr 选项
     */
    select(questionStr: string, selectItemStr: string) {
        let question = this.Questions.find((item) => { return item.Question == questionStr });
        if (question && question.Options.indexOf(selectItemStr) >= 0) {
            // 如果是单选，则清空已选
            if (question.IsRadio) {
                question.SelectOptions = [];
            }
            let index = question.SelectOptions.indexOf(selectItemStr);
            if (index >= 0) {
                question.SelectOptions.splice(index, 1);
            } else if (question.SelectOptions.length < question.Answer.length) {
                question.SelectOptions.push(selectItemStr);
            }
            game.emit(AnswerQuestions.EVENT_SELECT, question);
            if (question.IsFinishSelect && this._autoNext) {
                this.next();
            }
        }
    }


    /**
     * 验证所有题目是否完成
     * @returns 是否完成
     */
    checkAllFinish() {
        return this.Questions.every((item) => { return item.IsFinishSelect });
    }

    /**
     * 验证所有题目是否正确
     * @returns 是否正确
     */
    checkAllRight() {
        return this.Questions.every((item) => { return item.IsRight });
    }

    /**
     * 获取完成题目数量
     * @returns 完成题目数量
     */
    getFinshCount() {
        return this.Questions.filter((item) => { return item.IsFinishSelect }).length; 
    }

    /**
     * 获取所有题目数量
     * @returns 有题目数量
     */
    getTotalCount() {
        return this.Questions.length; 
    }

    /**
     * 获取正确题目数量
     * @returns 正确题目数量
     */
    getRightCount() {
        return this.Questions.filter((item) => { return item.IsRight }).length; 
    }

    /**
     * 重置
     */
    reset(question: string) {
        let q = this.Questions.find((item) => { return item.Question == question });
        if (q) {
            q.SelectOptions = [];
        }
    }

    /**
     * 重置所有
     */
    resetAll() {
        this.Questions.forEach((item) => { item.SelectOptions = [] });
    }
}

/**
 * 问题
 */
export class Question {
    /**
     * 组名 
     */
    GroupName: string = "";
    /**
     * 问题
     */
    Question: string = "";
    /**
     * 答案
     */
    Answer: string[] = [];
    /**
     * 选项
     */
    Options: string[] = [];
    /**
     * 已选
     */
    SelectOptions: string[] = [];
    /**
     * 是否完成
     */
    get IsFinishSelect() { return this.SelectOptions.length == this.Answer.length && this.SelectOptions.length > 0 }
    /**
     * 是否单选
     */
    get IsRadio() { return this.Answer.length == 1 }
    /**
     * 是否正确
     */
    get IsRight() { return this.IsFinishSelect && this.Answer.every((item) => { return this.SelectOptions.indexOf(item) >= 0 }) }
}