1 files changed, 18 insertions, 0 deletions
diff --git a/src/c/fastforge_logic.h b/src/c/fastforge_logic.h
new file mode 100644
index 0000000..4ccaba7
--- /dev/null
+++ b/src/c/fastforge_logic.h
@@ -0,0 +1,18 @@
+#ifndef FASTFORGE_LOGIC_H
+#define FASTFORGE_LOGIC_H
+
+#include "fastforge_types.h"
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <time.h>
+
+time_t entry_duration_seconds(const FastEntry *entry);
+uint8_t stage_level_for_elapsed(time_t elapsed_seconds);
+const char *stage_text_for_elapsed(time_t elapsed_seconds);
+void format_hhmmss(time_t seconds, char *buffer, size_t size);
+void format_duration_hours_minutes(time_t seconds, char *buffer, size_t size);
+time_t local_day_start(time_t timestamp);
+bool running_fast_is_at_target(const FastEntry *entry, time_t now);
+
+#endif