add: basic macro functions

add: better migration handling (transactions)

src/models/junction_macro.c

@@ -0,0 +1,33 @@
+#include <stdlib.h>
+#include <stdint.h>
+#include <stddef.h>
+
+#include <models/junction_macro.h>
+#include <logger.h>
+#include <macros.h>
+#include <database.h>
+
+int
+junction_macro_insert(int macro_id, int relay_id, int schedule_id, uint8_t weekday)
+{
+    int rc;
+    sqlite3_stmt *stmt;
+
+    sqlite3_prepare_v2(global_database, "INSERT INTO junction_macro(macro_id, schedule_id, relay_id, weekday) values (?1, ?2, ?3);", -1, &stmt, NULL);
+
+    sqlite3_bind_int(stmt, 1, macro_id);
+    sqlite3_bind_int(stmt, 2, relay_id);
+    sqlite3_bind_int(stmt, 3, schedule_id);
+    sqlite3_bind_int(stmt, 4, weekday);
+
+    rc = sqlite3_step(stmt);
+    if (rc != SQLITE_DONE)
+    {
+        LOGGER_ERR("error inserting data: %s", sqlite3_errmsg(global_database));
+        return 1;
+    }
+
+    sqlite3_finalize(stmt);
+
+    return 0;
+}