1 files changed, 60 insertions, 0 deletions
diff --git a/src/domain/message.h b/src/domain/message.h
new file mode 100644
index 0000000..fa36d2a
--- /dev/null
+++ b/src/domain/message.h
@@ -0,0 +1,60 @@
+#ifndef TINY_CONVMEM_DOMAIN_MESSAGE_H
+#define TINY_CONVMEM_DOMAIN_MESSAGE_H
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#define TINY_MESSAGE_ID_LENGTH 26
+#define TINY_SESSION_ID_MAX 256
+#define TINY_CONTENT_MAX (1024U * 1024U)
+#define TINY_TOOL_CALL_ID_MAX 256
+#define TINY_TAG_MAX 128
+#define TINY_TAG_COUNT_MAX 32
+#define TINY_QUERY_MAX 4096
+
+typedef enum tiny_role
+{
+  TINY_ROLE_USER = 1,
+  TINY_ROLE_ASSISTANT = 2,
+  TINY_ROLE_SYSTEM = 3
+} tiny_role_t;
+
+typedef enum tiny_memory_tier
+{
+  TINY_TIER_SHORT = 1,
+  TINY_TIER_MID = 2,
+  TINY_TIER_LONG = 3,
+  TINY_TIER_DISCARD = 4
+} tiny_memory_tier_t;
+
+typedef struct tiny_metadata
+{
+  char *tool_call_id;
+  char **tags;
+  size_t tag_count;
+  tiny_memory_tier_t memory_tier;
+} tiny_metadata_t;
+
+typedef struct tiny_message
+{
+  char message_id[TINY_MESSAGE_ID_LENGTH + 1];
+  char *session_id;
+  int64_t timestamp_ms;
+  tiny_role_t role;
+  char *content;
+  tiny_metadata_t metadata;
+} tiny_message_t;
+
+void tiny_message_init(tiny_message_t *message);
+void tiny_message_free(tiny_message_t *message);
+int tiny_message_copy(tiny_message_t *destination, const tiny_message_t *source);
+
+const char *tiny_role_name(tiny_role_t role);
+bool tiny_role_parse(const char *value, tiny_role_t *role);
+const char *tiny_tier_name(tiny_memory_tier_t tier);
+bool tiny_tier_parse(const char *value, tiny_memory_tier_t *tier);
+bool tiny_utf8_valid(const char *value, size_t length);
+bool tiny_message_id_valid(const char *value);
+
+#endif