/*
  regolith.h
  Regolith public API
  Author: Chris Bell
  Last edited by: Chris Bell
  Last edit date: 11-02-2026
*/

#ifndef REGOLITH_H
#define REGOLITH_H

#include <stddef.h>
#include <stdint.h>

#if defined(_WIN32) && defined(RG_SHARED)
#ifdef RG_BUILD
#define RG_API __declspec(dllexport)
#else
#define RG_API __declspec(dllimport)
#endif
#elif defined(__GNUC__)
#define RG_API __attribute__((visibility("default")))
#else
#define RG_API
#endif

#ifdef __cplusplus
extern "C" {
#endif

#define RG_VERSION_STRING "0.0.1"

/*
  TODO: Add documentation comments
*/

enum {
  RG_OK = 0,
  RG_ERR_GENERIC = -1,
  RG_ERR_NO_MEMORY = -2,
  RG_ERR_STATE = -3,
  RG_ERR_LUA = -4
};

enum { RG_LOG_TRACE = 0, RG_LOG_DEBUG, RG_LOG_INFO, RG_LOG_WARN, RG_LOG_ERROR };

typedef struct rg_context rg_context;

typedef struct rg_allocator {
  void *(*alloc)(size_t size, void *user);
  void *(*realloc)(void *ptr, size_t old_size, size_t new_size, void *user);
  void (*free)(void *ptr, size_t size, void *user);
  void *user;
} rg_allocator;

typedef void (*rg_log_fn)(int32_t level, const char *message, void *user);

typedef struct rg_config {
  uint32_t struct_size;
  rg_allocator allocator;
  rg_log_fn log;
  void *log_user;
  int32_t log_level;
  int32_t viewport_w;
  int32_t viewport_h;
  float display_scale;
} rg_config;

RG_API const char *rg_version(void);
RG_API void rg_config_init(rg_config *config);
RG_API rg_context *rg_create(const rg_config *config);
RG_API void rg_destroy(rg_context *ctx);
RG_API const char *rg_last_error(const rg_context *ctx);

#ifdef __cplusplus
}
#endif

#endif