1 files changed, 65 insertions, 0 deletions
diff --git a/chatroom.c b/chatroom.c
new file mode 100644
index 0000000..e2a6b1a
--- /dev/null
+++ b/chatroom.c
@@ -0,0 +1,65 @@
+#include "client.h"
+#include "chatroom.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+chatroom_t chatrooms[MAX_CHATROOMS];
+int chatroom_count = 0;
+
+void load_chatrooms(const char *filename) {
+    FILE *fp = fopen(filename, "r");
+    if (!fp) {
+        perror("chatroom file");
+        exit(1);
+    }
+
+    while (fscanf(fp, "%s %d %s %s %[^\n]",
+                  chatrooms[chatroom_count].name,
+                  &chatrooms[chatroom_count].users,
+                  chatrooms[chatroom_count].created,
+                  chatrooms[chatroom_count].time,
+                  chatrooms[chatroom_count].topic) == 5) {
+        chatroom_count++;
+    }
+
+    fclose(fp);
+}
+
+void print_chatroom_list(int sock) {
+    send_to_client(sock, "room-name   #    created      time     topic\n");
+    send_to_client(sock, "--------------------------------------------------------\n");
+    for (int i = 0; i < chatroom_count; i++) {
+        char line[BUFFER_SIZE];
+        snprintf(line, sizeof(line), "%-10s %-4d %-12s %-8s %s\n",
+                 chatrooms[i].name,
+                 chatrooms[i].users,
+                 chatrooms[i].created,
+                 chatrooms[i].time,
+                 chatrooms[i].topic);
+        send_to_client(sock, line);
+    }
+    send_to_client(sock, "--------------------------------------------------------\n");
+}
+
+int join_chatroom(const char *name, client_t *cli) {
+    for (int i = 0; i < chatroom_count; i++) {
+        if (strcmp(chatrooms[i].name, name) == 0) {
+            leave_chatroom(cli);
+            strncpy(cli->room, name, sizeof(cli->room) - 1);
+            chatrooms[i].users++;
+            return 1;
+        }
+    }
+    return 0;
+}
+
+void leave_chatroom(client_t *cli) {
+    for (int i = 0; i < chatroom_count; i++) {
+        if (strcmp(chatrooms[i].name, cli->room) == 0) {
+            chatrooms[i].users--;
+            break;
+        }
+    }
+    strcpy(cli->room, "");
+}