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

int threads = 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) {
		for (k = 0; k < lv; k++) printk("  ");
		printk(buf); printk("\t\t");

		stat_relative(f, buf, &info);
		printk_hex(info.type);
		if (info.type & FT_DIR) {
			printk("\t");
			if (strcmp(buf, ".") != 0 && strcmp(buf, "..") != 0) {
				FILE ff = open_relative(f, buf, 0);
				if (ff <= 0) {
					printk("error: "); printk_int(ff); printk("\n"); 
				} else {
					printk("fd: "); printk_int(ff); printk("\n");
					list_dir(ff, lv+1);
					close(ff);
				}
			} else {
				printk("\n");
			}
		} else {
			printk("\n");
		}
		i++;
	}
}

int main() {
	printk("(test app) malloc(42) = ");
	printk_hex((uint32_t)malloc(42));
	printk("\n");

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

	printk(" -> Main thread now sleeping...\n");
	while (1) {
		thread_sleep(100);
		if (threads == 0) break;
	}
	printk("\n -> Ok, let's try something else.\n");

	FILE f = open("/", 0);
	if (f <= 0) {
		printk(" -> Could not open '/', error #");
		printk_int(f);
		printk("...\n");
	} else {
		printk("Now enumerating '/' (fd "); printk_int(f); printk(") :\n");
		list_dir(f, 1);
		close(f);
	}

	printk(" -> Now sleeping, forever and ever...\n");
	while(1) {
		thread_sleep(1000);
	}

	return 0;
}