#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <time.h>
#include <pthread.h>
#include <ctype.h>

int state = 0;

struct stat a;
struct stat b;

char *pathServer;

void *funcChecker(void *pathClient)
{
    printf("Checker\n");
    printf("pathChck: %s\n\n", pathClient);
    while (1)
    {

        stat(pathClient, &a);
        sleep(1);
        stat(pathClient, &b);

        if (a.st_mtime != b.st_mtime)
        {
            state = 1;
        }
    }
}
void *funcPrintTimeAndChanges(void *pathClient, void *pathServer)
{
    char command1[256], command2[256], command3[256];
    printf("TimeAndChanges\n");
    printf("pathClient: %s\n", pathClient);
    printf("pathServer: %s/pathLog.log\n\n", pathServer);
    while (1)
    {
        if (state == 1)
        {
            sprintf(command1, "touch %s/logAll.log &&\
                            date >>%s/logAll.log && \
                            echo '%s' >>%s/logAll.log && \
                            ls -sr %s>>%s/logAll.log &&\
                            echo '' >>%s/logAll.log",
                    pathServer, pathServer, pathClient, pathServer, pathClient, pathServer, pathServer);
            system(command1);
            sprintf(command2, " echo Version%d.0 &&\
                            echo '\n----------------------------------\n' && \
                            echo 'Last modified time:' && date -u && \
                            cat %s/*.txt &&\
                            echo 'lines: ' && wc -l %s/*.txt &&\
                            echo 'words: ' && wc -w %s/*.txt &&\
                            echo 'characters: ' && wc -m %s/*.txt &&\
                            echo '----------------------------------------\n'",
                    i, pathClient, pathClient, pathClient, pathClient);
            system(command2);
            sprintf(command3, "touch %s/%d.txt &&\
                            cp -r %s/*.txt %s/%d.txt",
                    pathServer, i, pathClient, pathServer, i);
            system(command3);
            i++;
            state = 0;
        }
        fflush(stdout);
        sleep(1);
    }
}

int main(int argc, char *argv[])
{
    if (argc < 3)
    {
        printf("%s must be executed with exactly two addtional arguments(pathServer,pathClient)!\n", argv[0]);
        printf("Typed count is %d \n", argc);
        printf("Aborted automatically...\n");
        exit(0);
    }

    if (argc > 3)
    {
        printf("Too many arguments! %s must be executed with exactly two addtional arguments(pathRep,pathSub)!\n", argv[0]);
        printf("Aborted automatically...\n");
        exit(0);
    }
    if (argc == 3)
    {
        if (isdigit(argv[1][0]) || isdigit(argv[2][0]))
        {
            printf("Wrong argument! Folder path or paths is not exist!\n");
            printf("Aborted automatically...\n");
            exit(0);
        }
    }

    printf("Main\n");
    printf("pathServer: %s\n", argv[1]);
    printf("pathClient: %s\n\n", argv[2]);

    pthread_t threadChecker;
    pthread_t threadWorker;
    pthread_create(&threadChecker, NULL, funcChecker, argv[2]);
    pthread_create(&threadWorker, NULL, funcPrintTimeAndChanges, argv[2]);
    pthread_join(threadChecker, NULL);
    pthread_join(threadWorker, NULL);
}