first version of the client command parser

src/client/client.c

@@ -1,5 +1,4 @@
 #include "client.h"
-#include <stdio.h>
 
 int send_message(unsigned int sender, unsigned int receiver) {
 	int pipe_to_child[2];
@@ -57,10 +56,72 @@ int send_message(unsigned int sender, unsigned int receiver) {
 	return 0;
 }
 
-int main() {
+// Function to print usage information
+void printUsage() {
+	printf("Usage: message_cli [options]\n");
+	printf("Options:\n");
+	printf("  -h, --help               Display this help message\n");
+	printf("  -g, --group              Send message to a group\n");
+	printf("  -s, --sync               Send message synchronously\n");
+	printf("  -u, --uid <uid>          Specify the UID of the receiver\n");
+}
+
+int main(int argc, char *argv[]) {
 	// TODO: Client parsing to be done
-	unsigned int sender = getuid();
-	unsigned int receiver = 1000;
-	send_message(sender, receiver);
+
+	int groupFlag = 0;
+	int syncFlag = 0;
+	char receiverUid[MAX_VALUE_LENGTH];
+
+	for (int i = 1; i < argc; i++) {
+		if (strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "--help") == 0) {
+			printUsage();
+			exit(0);
+		} else if (strcmp(argv[i], "-g") == 0 || strcmp(argv[i], "--group") == 0) {
+			groupFlag = 1;
+			if (i + 1 < argc && argv[i + 1][0] != '-') {
+				strncpy(receiverUid, argv[i + 1], MAX_VALUE_LENGTH);
+				i++; // Skip the next argument since it's the value
+			}
+		} else if (strcmp(argv[i], "-s") == 0 || strcmp(argv[i], "--sync") == 0) {
+			syncFlag = 1;
+			if (i + 1 < argc && argv[i + 1][0] != '-') {
+				strncpy(receiverUid, argv[i + 1], MAX_VALUE_LENGTH);
+				i++; // Skip the next argument since it's the value
+			}
+		} else if (strcmp(argv[i], "-u") == 0 || strcmp(argv[i], "--uid") == 0) {
+			if (i + 1 < argc && argv[i + 1][0] != '-') {
+				strncpy(receiverUid, argv[i + 1], MAX_VALUE_LENGTH);
+				i++; // Skip the next argument since it's the value
+			} else {
+				fprintf(stderr, "Error: No value provided for option %s\n", argv[i]);
+				printUsage();
+				exit(1);
+			}
+		} else {
+			fprintf(stderr, "Error: Unknown option %s\n", argv[i]);
+			printUsage();
+			exit(1);
+		}
+	}
+
+	if (groupFlag) {
+		if (syncFlag) {
+			// send to group synchronously
+		} else {
+			// send to group asynchronously
+		}
+	} else {
+		if (syncFlag) {
+			// send to user synchronously
+		} else {
+			// send to user asynchronously
+		}
+	}
+
+	// unsigned int sender = getuid();
+	// unsigned int receiver = 1000;
+	// send_message(sender, receiver);
+
 	return 0;
 }

src/client/client.h

@@ -8,5 +8,7 @@
 #include <sys/stat.h>
 #include <unistd.h>
 
+#define MAX_VALUE_LENGTH 100
+
 int send_message(unsigned int sender, unsigned int receiver);
 #endif // !CLIENT_H