//
// Created by CC-star on 25-5-6.
//
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#define Words_File "../word/words.txt"

struct Words {
    char English[50];
    char Chinese[100];
    // int ReciteIndex;//单词背诵次数【背诵正确+1；错误-1】
} wordsList[500];

int wordsCount,SumRightCount = 0,SumLearnCount = 0;
int usedWords[500] = {0};

// 读取
int readWordsFromFile() {
    FILE* file = fopen( Words_File, "r");
    if (file == NULL) {
        printf("\n⚠️无法打开单词库文件：%s⚠️\n",  Words_File);
        return 0;
    }else {
        // 单词数
        wordsCount = 0;
        char line[100];
        while (fgets(line, sizeof(line), file) != NULL ) {
            sscanf(line, "%s %s",wordsList[wordsCount].English, wordsList[wordsCount].Chinese);
            wordsCount++;
            }
        }
        fclose(file);
        if (wordsCount == 0) {
            printf("\n\t⚠️单词库没有信息⚠️\n");
            return 0;
        }else {
            return 1;
        }
    }


// 显示所有单词
void showAllWords() {
    //readWordsFromFile();
    printf("\n---------------------👇单词列表👇----------------------\n");
    for (int i = 0; i < wordsCount; i++) {
        printf("%d. %s - %s\n", i + 1, wordsList[i].English, wordsList[i].Chinese);
    }
    printf("-----------------------👆共计单词数：%d👆------------------------\n",wordsCount);
}


// 背单词功能
void startLearning() {
    //readWordsFromFile();
    int LearnCount,ret;//本次背诵数量
    char ming[100];
    int RightCount = 0;//正确数量单词
    while (1){
        printf("\n---------------------👇背单词区域👇----------------------\n");
        printf("请输入要背诵的单词数量（不超过%d）: ", wordsCount);
        ret = scanf("%d", &LearnCount);
        while(getchar() != '\n');
        if (ret != 1 || LearnCount < 1 || LearnCount > wordsCount) {
            do {
                printf("输入无效，请输入1到%d之间的数字：\n", wordsCount);
                ret = scanf("%d", &LearnCount);
                while(getchar() != '\n');
            }while (ret != 1 || LearnCount < 1 || LearnCount > wordsCount);
        }
        // printf("本次需要背诵：%d", LearnCount);
        
        for (int i = 0; i < LearnCount; i++) {
            int randomIndex;
            do {
                randomIndex = rand() % wordsCount;
            } while (usedWords[randomIndex] == 1);

            usedWords[randomIndex] = 1;

            printf("单词：%s\n",wordsList[randomIndex].Chinese);
            printf("请输入对应英文(不要有空格)：\n");
            scanf("%s", ming);
            while (getchar() != '\n');
            if (strcmp(wordsList[randomIndex].English, ming) == 0) {
                RightCount++;
            } else {
                printf("错误，对应正确英文是：%s\n",wordsList[randomIndex].English);
            }
        }
        
        printf("-----------------------👆背单词区域👆------------------------\n");
        printf("\n---------------------👇单次成绩区域👇----------------------\n");
        //总结提示
        if (RightCount == LearnCount) {
            printf("\t太棒啦，全部正确！！本次背了%d个单词，分数为：%d\n",LearnCount,RightCount);
        }else if (RightCount > (LearnCount/2)){
            printf("\t不错哦！！本次背了%d个单词，分数为：%d\n",LearnCount,RightCount);
        }else {
            printf("\t很遗憾😪，本次背了%d个单词，只正确了%d个\n",LearnCount,RightCount);
        }
        printf("-----------------------👆单次成绩区域👆------------------------\n");

        SumLearnCount += LearnCount;
        SumRightCount += RightCount;
        RightCount = 0;

        char continueLearning;
        while (1) {
            printf("是否继续(Y/N)?\n");
            scanf(" %c", &continueLearning);
            if (continueLearning == 'Y' || continueLearning == 'y') {
                break;
            } else if (continueLearning == 'N' || continueLearning == 'n') {
                printf("\n---------------------👇总成绩区域👇----------------------\n");
                printf("\t本次共计背了%d个单词，总正确数为：%d\n", SumLearnCount, SumRightCount);
                printf("-----------------------👆总成绩区域👆------------------------\n");
                SumRightCount = 0;
                SumLearnCount = 0;
                return;
            } else {
                printf("输入有误，请重新输入\n");
            }
        }
    }
}

int C2main() {
    srand(time(NULL));
    if (readWordsFromFile() == 1){
        while (1) {
            printf("\n---------------------👇背单词控制面板👇----------------------\n");
            printf("1：开始背单词\n2：查看所有单词\n");
            printf("0.返回主控制台\n");
            printf("-----------------------👆选择对应数字👆------------------------\n");
            printf("请输入选择：");
            int opt;
            scanf("%d", &opt);
            while (getchar() != '\n');
            switch (opt) {
                case 1:
                    startLearning();
                break;
                case 2:
                    showAllWords();
                break;
                case 0:
                    printf("⚠️返回主控制台中...⚠️\n");
                return 0;
                default:
                    printf("⚠️输入有误，请重新输入⚠️\n");
                break;
            }
        }
    }else {
        printf("⚠️背单词程序无法运作，已退出⚠️\n");
    }

}