1 files changed, 58 insertions, 0 deletions
diff --git a/include/hybbx/messages.h b/include/hybbx/messages.h
new file mode 100644
index 0000000..d1c7345
--- /dev/null
+++ b/include/hybbx/messages.h
@@ -0,0 +1,58 @@
+#ifndef HYBBX_MESSAGES_H
+#define HYBBX_MESSAGES_H
+
+#include "hybbx/types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct hybbx_session;
+
+/** Automatic system notices (login, mail, timeouts, conference status, …). */
+#define HYBBX_MSG_PREFIX_SYSTEM "*** "
+
+/** Sysop / granted manual system-wide notices (`/broadcast`, `/announce`). */
+#define HYBBX_MSG_PREFIX_SYSOP "+++ "
+
+/** Private directed messages (system or Sysop+granted); v1 half-stub. */
+#define HYBBX_MSG_PREFIX_PRIVATE "### "
+
+/**
+ * Format a system line: `*** <body>`
+ */
+hybbx_result_t hybbx_msg_format_system(char *out, size_t out_len,
+                                     const char *body);
+
+/**
+ * Format a Sysop/granted system-wide line: `+++ <from>: <body>`
+ * @p from_label may be NULL → `+++ <body>`
+ */
+hybbx_result_t hybbx_msg_format_sysop(char *out, size_t out_len,
+                                      const char *from_label,
+                                      const char *body);
+
+/**
+ * Format a private line: `### <from>: <body>` or `### <body>` when @p from_label is NULL.
+ */
+hybbx_result_t hybbx_msg_format_private(char *out, size_t out_len,
+                                        const char *from_label,
+                                        const char *body);
+
+hybbx_result_t hybbx_msg_send_system(struct hybbx_session *session,
+                                     const char *body);
+
+hybbx_result_t hybbx_msg_send_sysop(struct hybbx_session *session,
+                                    const char *from_label,
+                                    const char *body);
+
+/** Half-stub: directed private message to one session. */
+hybbx_result_t hybbx_msg_send_private(struct hybbx_session *session,
+                                      const char *from_label,
+                                      const char *body);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HYBBX_MESSAGES_H */