Start making the code initialization logic

Makefile.am

@@ -1 +1,7 @@
 SUBDIRS = src
+AM_CFLAGS = -std=c17
+
+.PHONY: run
+
+run:
+	./src/fckgw

configure.ac

@@ -2,6 +2,5 @@ AC_INIT([fckgw],[1.0])
 AC_CONFIG_SRCDIR([src/main.c])
 AM_INIT_AUTOMAKE([-Wall -Werror foreign])
 AC_PROG_CC
-CFLAGS="$CFLAGS -std=c17"
 AC_CONFIG_FILES([Makefile src/Makefile])
 AC_OUTPUT

src/Makefile.am

@@ -1,2 +1,2 @@
 bin_PROGRAMS = fckgw
-fckgw_SOURCES = main.c api_key.c
+fckgw_SOURCES = main.c code.c

src/code.c

@@ -0,0 +1,24 @@
+#include <stdint.h>
+#include <stdio.h>
+#include <sys/random.h>
+#include <time.h>
+
+#include "code.h"
+#include "errors.h"
+
+int code_init(struct code *key) {
+	struct timespec ts;
+
+	if (clock_gettime(CLOCK_REALTIME, &ts) == -1) {
+		perror("Unable to read clock 'CLOCK_REALTIME'");
+		return ERR_CLOCK_READ;
+	}
+
+
+
+	key->unix_ts_sec = ts.tv_sec;
+	key->unix_ts_msec = ts.tv_nsec / 1000000;
+	key->purpose = ACCESS;
+
+	return 0;
+}

src/code.h

@@ -0,0 +1,23 @@
+#include <stdint.h>
+#include <time.h>
+
+#ifdef __SIZEOF_INT128__
+	typedef unsigned __int128 uint128_t;
+#endif
+
+enum code_purpose {
+	ACCESS,
+	DISCOUNT,
+};
+
+struct code {
+	time_t unix_ts_sec;
+	long unix_ts_msec;
+	enum code_purpose purpose;
+	uint16_t rand_a;
+	uint64_t rand_b;
+};
+
+int code_init(struct code *key);
+
+uint128_t code_convert_to_num(struct code *key);

src/errors.h

@@ -0,0 +1 @@
+#define ERR_CLOCK_READ 1

src/main.c

@@ -1,6 +1,14 @@
 #include <stdio.h>
-#include <./api_key.h>
+
+#include "code.h"
 
 int main(void) {
-    return 0;
+	struct code key;
+
+	int key_init_err = code_init(&key);
+	if (key_init_err != 0) {
+		return key_init_err;
+	}
+
+	printf("unix_ts_sec: %ld, unix_ts_nsec: %ld, purpose: %d\n", key.unix_ts_sec, key.unix_ts_msec, key.purpose);
 }