#include <stdio.h>
#include <malloc.h>
#include <stdlib.h>
#include <dirent.h>
#include <string.h>
#include <sys/stat.h>
#include <time.h>

char* getType(int fileType) {
    char* type;

    switch (fileType) {
        case DT_REG:
            type = "file";
            break;
        case DT_DIR:
            type = "dir";
            break;
        case DT_FIFO:
            type = "fifo";
            break;
        case DT_SOCK:
            type = "sock";
            break;
        case DT_CHR:
            type = "char dev";
            break;
        case DT_BLK:
            type = "block dev";
            break;
        case DT_LNK:
            type = "slink";
            break;
        default:
            type ="error";
            break;
    }

    return type;
}

void searchDir(char* dirName) {
    DIR* currentDirectory = opendir(dirName);

    if(currentDirectory == NULL) {
        printf("Nie ma takiego katalogu\n");
    } else {
        struct dirent* thisDir;

        while((thisDir = readdir(currentDirectory)) != NULL) {
            if(strcmp(thisDir->d_name, ".") && strcmp(thisDir->d_name, "..")) {
                char* newPath = calloc(1024, sizeof(char));
                struct stat stats;

                strcat(newPath, dirName);
                strcat(newPath, "/");
                strcat(newPath, thisDir->d_name);
                lstat(newPath, &stats);

                char* type = getType(thisDir->d_type);
                char* path = realpath(newPath, NULL);

                printf("%s:\n Pełna ścieżka: %s\n Rodzaj pliku: %s\n Rozmiar pliku: %ld B\n Data ostatniego dostępu: %ld\n Data ostatnie modyfikacji: %ld\n", thisDir->d_name, path, type, stats.st_size, stats.st_atime, stats.st_mtime);

                if(thisDir->d_type == DT_DIR && thisDir->d_type != DT_LNK) {
                    searchDir(newPath);
                }

                free(newPath);
            }
        }
    }
}


int main(int argc, char* argv[]) {
    char* startDir = argv[1];
    char* equality = argv[2];
    char* date = argv[3];

    if(argc < 4) {
        printf("Podano złą liczbę argumentów\n");
    } else if(strcmp(equality, "=") && strcmp(equality, ">") && strcmp(equality, "<")) {
        printf("Wprowadzono nieprawidłowy znak porówniania\n");
    } else {
        searchDir(startDir);
    }
    return 0;
}