#include <tce/syscall.h>
#include <stdlib.h>
#include <stdio.h>

int threads = 0;

FILE out = 0;

void thread_cascade(void* d) {
	int n = (int)d;

	threads ++;

	if (d == 0) {
		//printk("{#} 0 cascade element started => end\n");
		printk("*");
	} else {
		if (n < 0) {
			//printk("{#} - cascade element started\n");
			printk("-");
			n = 0 - n;
		} else {
			//printk("{#} + cascade element started\n");
			printk("+");
		}
		//printk("{#} FORK + ...\n");
		printk(">");
		thread_new(thread_cascade, (void*)(n - 1));
		//printk("{#} FORK - ...\n");
		printk("<");
		thread_new(thread_cascade, (void*)(1 - n));
		//printk("{#} Thread cascade element finished.\n");
		printk(".");
	}

	threads--;
}

void list_dir(FILE f, int lv) {
	char buf[256];
	int i = 0, k;
	int r;
	file_info info;
	
	while ((r = read(f, i, 256, buf)) > 0) {
		if (strcmp(buf, ".") == 0 || strcmp(buf, "..") == 0) {
			i++;
			continue;
		}
		for (k = 0; k < lv; k++) fprint(out, "  ");
		fprint(out, buf);
		stat_relative(f, buf, &info);
		if (info.type & FT_DIR) fprint(out, "/");
		fprint(out, "    \t");

		if (info.type & FT_FILE) fprint(out, "file ");
		if (info.type & FT_DIR) fprint(out, "dir ");
		if (info.type & FT_SYMLINK) fprint(out, "symlink ");
		if (info.type & FT_DEV) fprint(out, "dev ");
		if (info.type & FT_TERMINAL) fprint(out, "term ");

		if (info.type & FT_DIR) {
			fprint(out, "  \t");
			FILE ff = open_relative(f, buf, 0);
			if (ff <= 0) {
				fprintf(out, "error: %i\n", ff);
			} else {
				fprintf(out, "fd: %i\n", ff);
				list_dir(ff, lv+1);
				close(ff);
			}
		} else {
			fprint(out, "\n");
		}
		i++;
	}
}

void list_root() {
	FILE f = open("/", 0);
	if (f <= 0) {
		fprintf(out, " -> Could not open '/', error #%i\n", f);
	} else {
		fprintf(out, "Now enumerating '/' (fd %i) :\n", f);
		list_dir(f, 1);
		close(f);
	}
}

int main(char** args) {
	char**a;
	if (args != 0) {
		printk("args");
		for (a = args; *a != 0; a++) {
			printk(" - ");
			printk(*a);
		}
		printk("\n");
	}

	printk(" -> Creating thread cascade (total 2**4 = 16 threads)\n");
	thread_new(thread_cascade, (void*)4);

	while (1) {
		thread_sleep(100);
		if (threads == 0) break;
	}
	printk("\n");

	out = open("/.ui/klog", 0);
	list_root();

	return 0;
}