//
// Created by CC-star on 25-5-9.
//
#include "C3_shear.h"

#include <dirent.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

extern int songCount;

//读取
void Read_MuiscFile() {
    DIR *dir;//文件目录
    struct dirent *entry;//文件信息

    dir = opendir(MRES_PATH);

    if (dir == NULL) {
        printf("无法打开歌曲文件目录！\n");
        return;
    }
    songCount = 0;
    // 编号-歌手名-歌曲名-歌曲类别.mp3
    while ((entry = readdir(dir)) != NULL && songCount < 500) {
        char *filename = entry->d_name;

        if (strstr(filename, ".mp3") != NULL) {
            char fileCopy[200];
            strcpy(fileCopy, filename);
            //id
            char *token = strtok(fileCopy, "-");
            if (token != NULL) {
                SongList[songCount].id = atoi(token);

                // 歌手名
                token = strtok(NULL, "-");
                if (token != NULL) {
                    strcpy(SongList[songCount].artist, token);

                    // 歌曲名
                    token = strtok(NULL, "-");
                    if (token != NULL) {
                        strcpy(SongList[songCount].name, token);

                        // 歌曲类别
                        token = strtok(NULL, ".");
                        if (token != NULL) {
                            strcpy(SongList[songCount].category, token);
                            songCount++;
                        }
                    }
                }
            }
        }
    }
    closedir(dir);
    int i, j;
    struct Song temp;
    for (i = 0; i < songCount - 1; i++) {
        for (j = 0; j < songCount - i - 1; j++) {
            if (SongList[j].id > SongList[j + 1].id) {
                temp = SongList[j];
                SongList[j] = SongList[j + 1];
                SongList[j + 1] = temp;
            }
        }
    }
}


// 歌曲浏览功能
void BrowseSongs() {
    FILE *fp = fopen(MUSIC_PATH, "r");
    printf("\n---------------------👇歌曲列表👇----------------------\n");
    char line[500];
    while (fgets(line, sizeof(line), fp) != NULL) {
        printf("%s", line);
    }
    printf("-----------------------👆歌曲列表👆------------------------\n");
    fclose(fp);
}


//歌曲查询
void Song_query() {
    int i = 0;//某一个歌曲信息
    FILE *fp = fopen(MUSIC_PATH, "r");
    if (fp == NULL) {
        printf("文件打开失败\n");
        return;
    }
    char line[100];
    // 编号-歌手名-歌曲名-歌曲类别
    while (fgets(line, sizeof(line), fp) != NULL) {
        line[strcspn(line, "\n")] = 0;
        //ID
        char *token = strtok(line, "-");
        if (token != NULL) {
            SongList[i].id = atoi(token);
            //歌手
            token = strtok(NULL, "-");
            if (token != NULL) {
                strcpy(SongList[i].artist, token);
                //歌曲
                token = strtok(NULL, "-");
                if (token != NULL) {
                    strcpy(SongList[i].name, token);

                    token = strtok(NULL, "-");
                    if (token != NULL) {
                        strcpy(SongList[i].category, token);
                        i++;
                    }
                }
            }
        }
    }
    fclose(fp);
    int sum_song = i;
    while (1) {
        int found = 0;
        printf("\n---------------------👇歌曲查询信息类别👇----------------------\n");
        printf("1：id\n2.歌曲名\n3.歌手名\n4.歌曲类别\n");
        printf("0.返回控制台\n");
        printf("-----------------------👆选择对应数字👆------------------------\n");
        printf("请输入选择：");
        int opt,a;
        char c[100];
        scanf("%d", &opt);
        while(getchar() != '\n');
        switch (opt) {
            case 1:
                printf("请输入id：");
                scanf("%d", &a);
                while(getchar() != '\n');
                printf("\n---------------------👇您所查询的歌曲信息👇----------------------\n");
                for (int i = 0; i < sum_song; ++i) {
                    if (a == SongList[i].id) {
                        printf("%d-%s-%s-%s\n", SongList[i].id, SongList[i].artist, SongList[i].name, SongList[i].category);
                        found = 1;
                    }
                }
                if (found == 0) {
                    printf("⚠️未找到歌曲...⚠️\n");
                }
                printf("-----------------------👆歌曲信息👆------------------------\n");
                break;
            case 2:
                printf("请输入歌曲名：");
                scanf("%[^\n]", c);
                while(getchar() != '\n');
                printf("\n---------------------👇您所查询的歌曲信息👇----------------------\n");
                for (int i = 0; i < sum_song; ++i) {
                    if (strcmp(c, SongList[i].name) == 0) {
                        printf("%d-%s-%s-%s\n", SongList[i].id, SongList[i].artist, SongList[i].name, SongList[i].category);
                        found = 1;
                    }
                }
                if (found == 0) {
                    printf("⚠️未找到歌曲...⚠️\n");
                }
                printf("-----------------------👆歌曲信息👆------------------------\n");
                break;
            case 3:
                printf("请输入歌手名：");
                scanf("%[^\n]", c);
                while(getchar() != '\n');
                printf("\n---------------------👇您所查询的歌曲信息👇----------------------\n");
                for (int i = 0; i < sum_song; ++i) {
                    if (strcmp(c, SongList[i].artist) == 0) {
                        printf("%d-%s-%s-%s\n", SongList[i].id, SongList[i].artist, SongList[i].name, SongList[i].category);
                        found = 1;
                    }
                }
                if (found == 0) {
                    printf("⚠️未找到歌曲...⚠️\n");
                }
                printf("-----------------------👆歌曲信息👆------------------------\n");
                break;
            case 4:
                printf("请输入歌曲类别：");
                scanf("%s", c);
                while(getchar() != '\n');
                printf("\n---------------------👇您所查询的歌曲信息👇----------------------\n");
                for (int i = 0; i < sum_song; ++i) {
                    if (strcmp(c, SongList[i].category) == 0) {
                        printf("%d-%s-%s-%s\n", SongList[i].id, SongList[i].artist, SongList[i].name, SongList[i].category);
                        found = 1;
                    }
                }
                if (found == 0) {
                    printf("⚠️未找到歌曲...⚠️\n");
                }
                printf("-----------------------👆歌曲信息👆------------------------\n");
                break;
            case 0:
                printf("⚠️返回控制台中...⚠️\n");
                return;
            default:
                printf("⚠️输入有误，请重新输入⚠️\n");
            break;
        }
    }
    
}