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

extern unsigned int settings;
extern char **content_l;
extern char **content_m;
extern char **content_r;
extern char *path;

void get_dir_size(char *path, unsigned long *file_count, unsigned long *longest_name){
	DIR *dir = opendir(path);
	*longest_name = 256; //magic number originates out of readdir(), unless i implement my own name size function, thisll do
	unsigned long index = 1; //always makes the array at least 1 big, used for metadata like the amount of files
	if (dir) {
		struct dirent *entry;
		while ( (entry=readdir(dir)) ) {
			if (entry->d_name[0] != '.' && !(settings & SETTINGS_HIDDEN_FILES)) {
				index++;
			} else if (settings & SETTINGS_HIDDEN_FILES){
				index++;
			}
		}
	}	
	*file_count = index;
	closedir(dir);
}

void get_dir_content(char *path, unsigned long file_count, unsigned long longest_name, char **dir_content){
	DIR *dir = opendir(path);
	char content[file_count][longest_name];
	memset(content,0,sizeof(content));
	if (dir) {
		int index = 1; //skip index 0 as it is used for metadata like file count
		struct dirent *entry;
		while ( (entry=readdir(dir)) ) { 
			if (entry->d_name[0] != '.' && !(settings & SETTINGS_HIDDEN_FILES)) {
				strcpy(dir_content[index], entry->d_name);
				index++;
			} else if (settings & SETTINGS_HIDDEN_FILES) {
				strcpy(dir_content[index], entry->d_name);
				index++;
			}
		}
	}	
	closedir(dir);
}

void print_dir(WINDOW *win, char **dir_content){
	for (unsigned long i = 1; i < *dir_content[0]; i++ ){ //skip index 0 as it is used for metadata like file count
		wprintw(win, "%s",dir_content[i]);
		wmove(win, i, 1);
	}
}

void *populate_dir(void *which){ // 0=left, 1=main, 2=right
	char wh = (char)which;
	unsigned long file_count = 0;
	unsigned long longest_name = 0;

	if (wh) {
		if (wh == 1) {
			free(content_m);
			get_dir_size(path, &file_count, &longest_name);
			content_m = calloc(file_count+1, sizeof(*content_m)); //index 0 is used for metadata like file count in dir
			for (unsigned long i = 0; i<file_count+1; i++) {
				content_m[i] = calloc(longest_name, sizeof(content_m[i]));
			}
			*content_m[0] = file_count;
			get_dir_content(path, file_count, longest_name, content_m);
		} else {
			free(content_r);
			get_dir_size(path, &file_count, &longest_name);
			content_r = calloc(file_count+1, sizeof(*content_r));
			for (unsigned long i = 0; i<file_count+1; i++) {
				content_r[i] = calloc(longest_name, sizeof(content_r[i]));
			}
			*content_r[0] = file_count;
			get_dir_content(path, file_count, longest_name, content_r);
		}
	} else {
		free(content_l);
		get_dir_size(path, &file_count, &longest_name);
		content_l = calloc(file_count+1, sizeof(*content_l));
		for (unsigned long i = 0; i<file_count+1; i++) {
			content_l[i] = calloc(longest_name, sizeof(content_l));
		}
		*content_l[0] = file_count;
		get_dir_content(path, file_count, longest_name, content_l);
	}

	return NULL;
}