#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include <errno.h>
#include <signal.h>

extern "C" {
	#include <sys/types.h>
	#include <sys/wait.h>
	#include <unistd.h>
}

#include <parseargs.hfa>
#include <fstream.hfa>

#if __SIZEOF_LONG__ == 4
	#define BIG_UNSIGNED_LONG "4294967295"
	#define TOO_BIG_UNSIGNED_LONG "4294967296"
#elif  __SIZEOF_LONG__ == 8
	#define BIG_UNSIGNED_LONG "18446744073709551615"
	#define TOO_BIG_UNSIGNED_LONG "18446744073709551616"
#else
	#error unexpected size of long
#endif

int true_main(const char * exec);

int main(int argc, char * argv[]) {
	if(!getenv("CFATEST_FORK_EXEC_TEXT")) return true_main(argv[0]);

	int i = -3;
	unsigned u = 3;
	unsigned long ul = 3;
	unsigned long long ull = 3;
	double d = 3.3;


	cfa_option options[] = {
		{ 'i', "int",              "test int",                i   },
		{ 'u', "unsigned",         "test unsigned",           u   },
		{ 'l', "unsignedlong",     "test unsigned long",      ul  },
		{ 'L', "unsignedlonglong", "test unsigned long long", ull },
		{ 'd', "double",           "test double",             d   },
	};
	int options_cnt = sizeof(options) / sizeof(cfa_option);

	char **left;
	parse_args( options, options_cnt, "[OPTIONS]...\ntesting bool parameters", left);

	sout | "int                :" | i;
	sout | "unsigned           :" | u;
	sout | "unsigned long      :" | ul;
	sout | "unsigned long long :" | ull;
	sout | "double             :" | d;
}

int do_wait(pid_t pid) {
	int wstatus;
	int options = 0;
	pid_t ret = waitpid(pid, &wstatus, options);
	fflush(stdout);
	if(ret < 0) {
		fprintf(stderr, "Fork returned with error: %d '%s'\n", errno, strerror(errno));
		exit(1);
	}
	return wstatus;
}

pid_t strict_fork(void) {
	fflush(stdout);
	pid_t ret = fork();
	if(ret < 0) {
		fprintf(stderr, "Fork returned with error: %d '%s'\n", errno, strerror(errno));
		exit(1);
	}
	return ret;
}

void print_status(int wstatus) {
	printf("Child status:\n");
	printf("    WIFEXITED   : %d", WIFEXITED(wstatus));
	printf("    WEXITSTATUS : %d", WEXITSTATUS(wstatus));
	printf("    WIFSIGNALED : %d", WIFSIGNALED(wstatus));
	printf("    WTERMSIG    : %d", WTERMSIG(wstatus));
	printf("    WCOREDUMP   : %d", WCOREDUMP(wstatus));
	printf("    WIFSTOPPED  : %d", WIFSTOPPED(wstatus));
	printf("    WSTOPSIG    : %d", WSTOPSIG(wstatus));
	printf("    WIFCONTINUED: %d\n", WIFCONTINUED(wstatus));
}

int true_main(const char * path) {
	char * env[] = { "CFATEST_FORK_EXEC_TEXT=1", 0p };

	printf("no arg:\n");
	if(pid_t child = strict_fork(); child == 0) {
		int ret = execle(path, "parsenums", (const char*)0p, env);
		if(ret < 0) {
			fprintf(stderr, "Execl 2 returned with error: %d '%s'\n", errno, strerror(errno));
			exit(1);
		}
	}
	else {
		int status = do_wait(child);
		print_status(status);
	}
	printf("\n");

	printf("all 0 arg:\n");
	if(pid_t child = strict_fork(); child == 0) {
		int ret = execle(path, "parsenums", "-i=0", "-u=0", "-l=0", "-L=0", "-d=0", (const char*)0p, env);
		if(ret < 0) {
			fprintf(stderr, "Execl 2 returned with error: %d '%s'\n", errno, strerror(errno));
			exit(1);
		}
	}
	else {
		int status = do_wait(child);
		print_status(status);
	}
	printf("\n");

	printf("negative vals arg:\n");
	if(pid_t child = strict_fork(); child == 0) {
		int ret = execle(path, "parsenums", "-i=-1", "-d=-1", (const char*)0p, env);
		if(ret < 0) {
			fprintf(stderr, "Execl 2 returned with error: %d '%s'\n", errno, strerror(errno));
			exit(1);
		}
	}
	else {
		int status = do_wait(child);
		print_status(status);
	}
	printf("\n");

	printf("funky notation arg:\n");
	if(pid_t child = strict_fork(); child == 0) {
		int ret = execle(path, "parsenums", "-i=0x10", "-u=0x20", "-l=0x300", "-L=0x4000", "-d=5e6", (const char*)0p, env);
		if(ret < 0) {
			fprintf(stderr, "Execl 2 returned with error: %d '%s'\n", errno, strerror(errno));
			exit(1);
		}
	}
	else {
		int status = do_wait(child);
		print_status(status);
	}
	printf("\n");

	printf("big values arg:\n");
	if(pid_t child = strict_fork(); child == 0) {
		int ret = execle(path, "parsenums", "-i=2147483647", "-u=4294967295", "-l=" BIG_UNSIGNED_LONG, "-L=18446744073709551615", "-d=5e6", (const char*)0p, env);
		if(ret < 0) {
			fprintf(stderr, "Execl 2 returned with error: %d '%s'\n", errno, strerror(errno));
			exit(1);
		}
	}
	else {
		int status = do_wait(child);
		print_status(status);
	}
	printf("\n");

	printf("too big values arg:\n");
	if(pid_t child = strict_fork(); child == 0) {
		int ret = execle(path, "parsenums", "-i=2147483648", (const char*)0p, env);
		if(ret < 0) {
			fprintf(stderr, "Execl 2 returned with error: %d '%s'\n", errno, strerror(errno));
			exit(1);
		}
	}
	else {
		int status = do_wait(child);
		print_status(status);
	}
	printf("\n");

	if(pid_t child = strict_fork(); child == 0) {
		int ret = execle(path, "parsenums", "-u=4294967296", (const char*)0p, env);
		if(ret < 0) {
			fprintf(stderr, "Execl 2 returned with error: %d '%s'\n", errno, strerror(errno));
			exit(1);
		}
	}
	else {
		int status = do_wait(child);
		print_status(status);
	}
	printf("\n");

	if(pid_t child = strict_fork(); child == 0) {
		int ret = execle(path, "parsenums", "-l=" TOO_BIG_UNSIGNED_LONG, (const char*)0p, env);
		if(ret < 0) {
			fprintf(stderr, "Execl 2 returned with error: %d '%s'\n", errno, strerror(errno));
			exit(1);
		}
	}
	else {
		int status = do_wait(child);
		print_status(status);
	}
	printf("\n");

	if(pid_t child = strict_fork(); child == 0) {
		int ret = execle(path, "parsenums", "-L=18446744073709551616", (const char*)0p, env);
		if(ret < 0) {
			fprintf(stderr, "Execl 2 returned with error: %d '%s'\n", errno, strerror(errno));
			exit(1);
		}
	}
	else {
		int status = do_wait(child);
		print_status(status);
	}
	printf("\n");

	printf("negative errors arg:\n");
	if(pid_t child = strict_fork(); child == 0) {
		int ret = execle(path, "parsenums", "-u=-1", (const char*)0p, env);
		if(ret < 0) {
			fprintf(stderr, "Execl 2 returned with error: %d '%s'\n", errno, strerror(errno));
			exit(1);
		}
	}
	else {
		int status = do_wait(child);
		print_status(status);
	}
	printf("\n");

	if(pid_t child = strict_fork(); child == 0) {
		int ret = execle(path, "parsenums", "-l=-1", (const char*)0p, env);
		if(ret < 0) {
			fprintf(stderr, "Execl 2 returned with error: %d '%s'\n", errno, strerror(errno));
			exit(1);
		}
	}
	else {
		int status = do_wait(child);
		print_status(status);
	}
	printf("\n");

	if(pid_t child = strict_fork(); child == 0) {
		int ret = execle(path, "parsenums", "-L=-1", (const char*)0p, env);
		if(ret < 0) {
			fprintf(stderr, "Execl 2 returned with error: %d '%s'\n", errno, strerror(errno));
			exit(1);
		}
	}
	else {
		int status = do_wait(child);
		print_status(status);
	}
	printf("\n");

	printf("All Done!\n");

	return 0;
}