#ifndef UMBRELLA_UNIT_H
#define UMBRELLA_UNIT_H

#include "umbrella.h"

/*
 * unit_load_all: scan UMBRELLA_UNITS_DIR and load all *.yaml files.
 * Populates g.units and g.unit_count.
 * Returns number of units loaded, -1 on fatal error.
 */
int unit_load_all(void);

/*
 * unit_load_file: load a single unit yaml file.
 * Returns 0 on success, -1 on error.
 */
int unit_load_file(const char *path, Unit *out);

/*
 * unit_find: look up a unit by name.
 * Returns pointer into g.units, or NULL if not found.
 */
Unit *unit_find(const char *name);

/*
 * unit_state_str: human-readable state name.
 */
const char *unit_state_str(ProcessState state);

/*
 * ring_init: allocate and zero a ring buffer.
 */
RingBuffer *ring_init(void);

/*
 * ring_push: append a line to the ring buffer.
 */
void ring_push(RingBuffer *rb, const char *line, int len);

/*
 * ring_free: free a ring buffer.
 */
void ring_free(RingBuffer *rb);

#endif /* UMBRELLA_UNIT_H */