# include "main.h"

void test_strlen();
void test_strcpy();
void test_strcmp();
void test_write();
void test_read();
void test_strdup();
void test_calloc();

int
main(void) {

	test_strlen();
	printf("\n");
	test_strcpy();
	printf("\n");
	test_strcmp();
	printf("\n");
	test_write();
	printf("\n");
	test_read();
	printf("\n");
	test_strdup();
	printf("\n");
	test_calloc();

	return 0;
}

void
test_strlen() {
	// ft_strlen
	{
		printf("ft_strlen:\n");

		char *empty = "";
		printf("empty: %ld\n", ft_strlen(empty));

		char *test = "test";
		printf("test: %ld\n", ft_strlen(test));

		char *very_long = calloc(USHRT_MAX, 1);
		very_long = memset(very_long, 'C', USHRT_MAX - 1);
		very_long[USHRT_MAX] = '\0';
		printf("very_long: %ld\n", ft_strlen(very_long));

		// printf("%s\n", very_long);
		free(very_long);
	}

	printf("\n");

	// strlen
	{
		printf("strlen:\n");

		char *empty = "";
		printf("empty: %ld\n", strlen(empty));

		char *test = "test";
		printf("test: %ld\n", strlen(test));

		char *very_long = calloc(USHRT_MAX, 1);
		very_long = memset(very_long, 'C', USHRT_MAX - 1);
		very_long[USHRT_MAX] = '\0';
		printf("very_long: %ld\n", strlen(very_long));

		// printf("%s\n", very_long);
		free(very_long);
	}
}

void
test_strcpy() {
	// ft_strcpy
	{
		printf("ft_strcpy:\n");

		ft_strcpy(NULL, NULL);

		char src_empty[] = "";
		char dst_empty[] = "";
		char *ret = ft_strcpy(dst_empty, src_empty);
		printf ("ret: %s_%p, src: %s_%p, dest: %s_%p\n",
				ret, ret, src_empty, src_empty, dst_empty, dst_empty);

		char null_char[0];
		ft_strcpy(null_char, NULL);

		ft_strcpy(dst_empty, NULL);
		ft_strcpy(NULL, src_empty);

		char src[10] = "src";
		char dst[10] = "dst";
		printf ("src: %s, dest: %s\n", src, dst);
		ret = ft_strcpy(dst, src);
		printf ("ret: %s_%p, src: %s_%p, dest: %s_%p\n", ret, ret, src, src, dst, dst);
		// printf ("ret: %p, src: %p, dest: %p\n", ret, src, dst);
		//
		char *very_long_src = calloc(USHRT_MAX, 1);
		char *very_long_dst = calloc(USHRT_MAX, 1);
		very_long_src = memset(very_long_src, 'C', USHRT_MAX - 1);
		very_long_src[USHRT_MAX] = '\0';
		ret = ft_strcpy(very_long_dst, very_long_src);
		printf ("ret: %p, src: %p, dest: %p\n",
				ret, very_long_src, very_long_dst);

		// printf("%s\n", very_long);
		free(very_long_src);
		free(very_long_dst);
	}

	printf("\n");

	// strcpy
	{
		printf("strcpy:\n");

		char src_empty[] = "";
		char dst_empty[] = "";
		char *ret = strcpy(dst_empty, src_empty);
		printf ("ret: %s_%p, src: %s_%p, dest: %s_%p\n",
				ret, ret, src_empty, src_empty, dst_empty, dst_empty);

		char src[10] = "src";
		char dst[10] = "dst";
		printf ("src: %s, dest: %s\n", src, dst);
		ret = strcpy(dst, src);
		printf ("ret: %s_%p, src: %s_%p, dest: %s_%p\n", ret, ret, src, src, dst, dst);
		// printf ("ret: %p, src: %p, dest: %p\n", ret, src, dst);
		//
		char *very_long_src = calloc(USHRT_MAX, 1);
		char *very_long_dst = calloc(USHRT_MAX, 1);
		very_long_src = memset(very_long_src, 'C', USHRT_MAX - 1);
		very_long_src[USHRT_MAX] = '\0';
		ret = strcpy(very_long_dst, very_long_src);
		printf ("ret: %p, src: %p, dest: %p\n",
				ret, very_long_src, very_long_dst);

		// printf("%s\n", very_long);
		free(very_long_src);
		free(very_long_dst);
	}
}

void
test_strcmp() {

	// ft_strcmp
	{
		printf("ft_strcmp:\n");

		printf("ret: %d, s1: '', s2: ''\n", ft_strcmp("", ""));

		char *s1 = "test4";
		char *s2 = "test5";
		printf("ret: %d, s1: '%s', s2: '%s'\n", ft_strcmp(s1, ""), s1 , "");
		printf("ret: %d, s1: '%s', s2: '%s'\n", ft_strcmp("", s2), "" , s2);
		printf("ret: %d, s1: '%s', s2: '%s'\n", ft_strcmp(s1, s2), s1 , s2);

		s1 = "equal";
		s2 = "equal";
		printf("ret: %d, s1: '%s', s2: '%s'\n", ft_strcmp(s1, s2), s1 , s2);
	}

	printf("\n");

	// strcmp
	{
		printf("strcmp:\n");

		printf("ret: %d, s1: '', s2: ''\n", strcmp("", ""));

		char *s1 = "test4";
		char *s2 = "test5";
		printf("ret: %d, s1: '%s', s2: '%s'\n", strcmp(s1, ""), s1 , "");
		printf("ret: %d, s1: '%s', s2: '%s'\n", strcmp("", s2), "" , s2);
		printf("ret: %d, s1: '%s', s2: '%s'\n", strcmp(s1, s2), s1 , s2);

		s1 = "equal";
		s2 = "equal";
		printf("ret: %d, s1: '%s', s2: '%s'\n", strcmp(s1, s2), s1 , s2);
	}
}

void
test_write() {
	// ft_write
	{
		printf("ft_write:\n");

		ft_write(1, "ft_write(1, \"test \", 5): ", 25);
		printf("-> %ld\n", ft_write(1, "test ", 5));

		size_t error = ft_write(-1, "test ", 5);
		printf("error: %ld\n", error);
		printf("ERRNO_%d: %s\n", errno, strerror(errno));

	}

	printf("\n");

	// write
	{
		printf("write:\n");

		write(1, "write(1, \"test \", 5): ", 22);
		printf("-> %ld\n", write(1, "test ", 5));

		size_t error = write(-1, "test ", 5);
		printf("error: %ld\n", error);
		printf("ERRNO_%d: %s\n", errno, strerror(errno));
	}
}

void
test_read() {
	// ft_read
	{
		printf("ft_read:\n");

		// char in[10];
		// ft_read(0, in, 10);
		// printf("%s\n", in);

		char buf[10];
		printf("ft_read ret: %ld\n", ft_read(open("main.c", O_RDONLY), buf, 10)); 
		printf ("buf: %s\n", buf);
		size_t error = ft_read(open("test", O_RDWR), buf, 10);
		printf("ft_read error: %ld\n", error);
		printf("ERRNO_%d: %s\n", errno, strerror(errno));
	}

	printf("\n");
	
	// read
	{
		printf("read:\n");

		// char in[10];
		// read(0, in, 10);
		// printf("%s\n", in);

		char buf[10];
		printf("read ret: %ld\n", read(open("main.c", O_RDONLY), buf, 10)); 
		printf ("buf: %s\n", buf);
		size_t error = read(open("test", O_RDWR), buf, 10);
		printf("read error: %ld\n", error);
		printf("ERRNO_%d: %s\n", errno, strerror(errno));
	}
}

void
test_strdup() {
	// ft_strdup
	{
		printf("ft_strdup:\n");

		char *empty = calloc(1, 1);
		char *copy_empty = ft_strdup(empty);
		printf("empty: %s_%p, copy: %s_%p\n", empty, empty, copy_empty, copy_empty); 

		free(empty);
		free(copy_empty);

		char *buf = calloc(10, 1);
		strcpy(buf, "test");

		char *dup = ft_strdup(buf);
		printf("buf: %s_%p, dup: %s_%p\n", buf, buf, dup, dup); 

		free(buf);
		free(dup);

		char *very_long = calloc(USHRT_MAX, 1);
		char *copy_long = ft_strdup(very_long);
		printf ("long: %p, copy: %p\n", very_long, copy_long);

		free(very_long);
		free(copy_long);
	}


	// strdup
	{
		printf("strdup:\n");

		char *empty = calloc(1, 1);
		char *copy_empty = strdup(empty);
		printf("empty: %s_%p, copy: %s_%p\n", empty, empty, copy_empty, copy_empty); 

		free(empty);
		free(copy_empty);

		char *buf = calloc(10, 1);
		strcpy(buf, "test");

		char *dup = strdup(buf);
		printf("buf: %s_%p, dup: %s_%p\n", buf, buf, dup, dup); 

		free(buf);
		free(dup);

		char *very_long = calloc(USHRT_MAX, 1);
		char *copy_long = strdup(very_long);
		printf ("long: %p, copy: %p\n", very_long, copy_long);

		free(very_long);
		free(copy_long);
	}
}

void
test_calloc() {
	// ft_calloc
	{
		printf("ft_calloc\n");

		char *normal = ft_calloc(10, 1); // return ""
		printf("normal: %s_%p\n", normal, normal);
		for (int i = 0; i < 10; i++)
			printf("'%b' ", normal[i]);
		printf("\n");

		char *empty = ft_calloc(0, 0);
		printf("empty: %p\n", empty);

		char *overflow = ft_calloc(UINT_MAX, UINT_MAX);
		printf("overflow: %s_%p\n", overflow, overflow);

		char *buf = ft_calloc(10, 1);
		strcpy(buf, "test");
		printf("test: %s_%p\n", buf, buf);

		free(normal);
		free(empty);
		free(buf);
	}

	printf("\n");

	// calloc
	{
		printf("calloc\n");

		char *normal = ft_calloc(10, 1);
		printf("normal: %s_%p\n", normal, normal);
		for (int i = 0; i < 10; i++)
			printf("'%b' ", normal[i]);
		printf("\n");

		char *empty = calloc(0, 0);
		printf("empty: %p\n", empty);

		char *overflow = calloc(UINT_MAX, UINT_MAX);
		printf("overflow: %s_%p\n", overflow, overflow);

		char *buf = calloc(10, 1);
		strcpy(buf, "test");
		printf("test: %s_%p\n", buf, buf);

		free(normal);
		free(empty);
		free(buf);
	}
}