#include <curses.h>
#include <pthread.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "defines.h"
#include "backend.h"


pthread_mutex_t mutex_top;
pthread_mutex_t mutex_btm;
pthread_mutex_t mutex_lft;
pthread_mutex_t mutex_mid;
pthread_mutex_t mutex_rgt;

/* contains entire directory as 2d array
 * may be changed in future to only include parts of the dir (currently includes entire dir) */
file *rgt_content;
file *mid_content;
file *lft_content;
char *top_content; /* current path */

unsigned long rgt_file_count;
unsigned long mid_file_count;
unsigned long lft_file_count;
unsigned long top_width;
	
	

extern unsigned int status;

void *thread_mid(void *data){
	pthread_mutex_lock(&mutex_mid);

	free(mid_content);

	char *path;
	if((path=getcwd(NULL, 0)) == NULL) {
		mid_content = malloc(sizeof(file));
		mid_content[1].file_name_width = sizeof("cannot open directory");
		mid_content[1].file_name = "cannot open directory";
		mid_file_count = 1;
	} else {


		mid_file_count = (unsigned long)get_dir_size(path);
		mid_content = malloc(mid_file_count * sizeof(file));
		get_dir_content(path, &mid_file_count, mid_content);

	}
	free(path);
	pthread_mutex_unlock(&mutex_mid);
	pthread_exit(NULL);
}
void *thread_lft(void *data){
	pthread_mutex_lock(&mutex_lft);

	free(lft_content);

	char *path;
	if((path=getcwd(NULL, 0)) == NULL) {
		lft_content = malloc(sizeof(file));
		lft_content[1].file_name_width = sizeof("cannot open directory");
		lft_content[1].file_name = "cannot open directory";
		lft_file_count = 1;
	} else {

		char *parent ;
		if((parent = malloc(strlen(path)+strlen("/..")+1)) != NULL){
			parent[0] = '\0';   /* ensures empty string */
			strcat(parent, path);
			strcat(parent, "/..");
		}

		lft_file_count = (unsigned long)get_dir_size(parent);
		lft_content = malloc(lft_file_count * sizeof(file));
		get_dir_content(parent, &lft_file_count, lft_content);
		free(parent);

	}
	free(path);
	pthread_mutex_unlock(&mutex_lft);
	pthread_exit(NULL);


}
void *thread_rgt(void *data){

	
	pthread_exit(NULL);
}
void *thread_top(void *data){
	pthread_mutex_lock(&mutex_top);
	free(top_content);

	char *path;
	if((path=getcwd(NULL, 0)) == NULL) {
		top_content = malloc(sizeof("cannot open directory"));
		top_width = sizeof("cannot open directory");
		top_content = "cannot open directory";
	} else {
		top_content = getcwd(NULL, 0);
		top_width = strlen(top_content);
	}

	free(path);
	pthread_mutex_unlock(&mutex_top);
	pthread_exit(NULL);
}
void *thread_btm(void *data){

	pthread_exit(NULL);
}

void threading_init(){
	rgt_content = malloc(sizeof(char));
	mid_content = malloc(sizeof(file));
	lft_content = malloc(sizeof(file));

	top_content = malloc(sizeof(char));



	pthread_mutex_init(&mutex_top, NULL);
	pthread_mutex_init(&mutex_mid, NULL);
	pthread_mutex_init(&mutex_lft, NULL);
}
void threading_free(){
	free(rgt_content);
	free(mid_content);
	free(lft_content);
	free(top_content);
	
	pthread_mutex_destroy(&mutex_top);
	pthread_mutex_destroy(&mutex_mid);
	pthread_mutex_destroy(&mutex_lft);
}