#ifndef automerge_h
#define automerge_h

/* Warning, this file is autogenerated by cbindgen. Don't modify this manually. */

#include <stdint.h>
#include <stdbool.h>

typedef struct Backend Backend;

typedef struct SyncState SyncState;

/**
 * # Safety
 * This must me called with a valid backend pointer
 */
intptr_t automerge_apply_changes(Backend *backend);

/**
 * # Safety
 * This must me called with a valid backend pointer
 * request must be a valid pointer pointing to a cstring
 */
intptr_t automerge_apply_local_change(Backend *backend, const char *request);

/**
 * # Safety
 * This must me called with a valid backend pointer
 */
Backend *automerge_clone(Backend *backend);

/**
 * # Safety
 * This must me called with a valid pointer to a change and the correct len
 */
intptr_t automerge_decode_change(Backend *backend, uintptr_t len, const uint8_t *change);

/**
 * # Safety
 * `encoded_state_[ptr|len]` must be the address & length of a byte array
 * Returns an opaque pointer to a SyncState
 * panics (segfault?) if the buffer was invalid
 */
SyncState *automerge_decode_sync_state(const uint8_t *encoded_state_ptr, uintptr_t encoded_state_len);

/**
 * # Safety
 * This must me called with a valid pointer a json string of a change
 */
intptr_t automerge_encode_change(Backend *backend, const char *change);

/**
 * # Safety
 * Must be called with a valid backend pointer
 * sync_state must be a valid pointer to a SyncState
 * Returns an `isize` indicating the length of the binary message
 * (-1 if there was an error)
 */
intptr_t automerge_encode_sync_state(Backend *backend, SyncState *sync_state);

/**
 * # Safety
 * This must me called with a valid backend pointer
 */
const char *automerge_error(Backend *backend);

/**
 * # Safety
 * This must me called with a valid backend pointer
 */
void automerge_free(Backend *backend);

/**
 * # Safety
 * Must be called with a valid backend pointer
 * sync_state must be a valid pointer to a SyncState
 * Returns an `isize` indicating the length of the binary message
 * (-1 if there was an error, 0 if there is no message)
 */
intptr_t automerge_generate_sync_message(Backend *backend, SyncState *sync_state);

/**
 * # Safety
 * This must me called with a valid backend pointer
 * binary must be a valid pointer to len bytes
 */
intptr_t automerge_get_changes(Backend *backend, uintptr_t len, const uint8_t *binary);

/**
 * # Safety
 * This must me called with a valid backend pointer
 */
intptr_t automerge_get_changes_for_actor(Backend *backend, const char *actor);

/**
 * # Safety
 * This must me called with a valid pointer a json string of a change
 */
intptr_t automerge_get_heads(Backend *backend);

/**
 * # Safety
 * This must me called with a valid pointer to a backend
 * the automerge api changed to return a change and a patch
 * this C api was not designed to returned mixed values so i borrowed the
 * get_last_local_change call from the javascript api to solve the same problem
 */
intptr_t automerge_get_last_local_change(Backend *backend);

/**
 * # Safety
 * This must me called with a valid backend pointer
 * binary must be a valid pointer to len bytes
 */
intptr_t automerge_get_missing_deps(Backend *backend, uintptr_t len, const uint8_t *binary);

/**
 * # Safety
 * This must me called with a valid backend pointer
 */
intptr_t automerge_get_patch(Backend *backend);

Backend *automerge_init(void);

/**
 * # Safety
 * data pointer must be a valid pointer to len bytes
 */
Backend *automerge_load(uintptr_t len, const uint8_t *data);

/**
 * # Safety
 * This must me called with a valid backend pointer
 */
intptr_t automerge_load_changes(Backend *backend);

/**
 * # Safety
 *
 * This must me called with a valid backend pointer
 * the buffer must be a valid pointer pointing to at least as much space as was
 * required by the previous binary result call
 */
intptr_t automerge_read_binary(Backend *backend, uint8_t *buffer);

/**
 * # Safety
 * This must me called with a valid backend pointer
 * and buffer must be a valid pointer of at least the number of bytes returned by the previous
 * call that generated a json result
 */
intptr_t automerge_read_json(Backend *backend, char *buffer);

/**
 * # Safety
 * Must be called with a valid backend pointer
 * sync_state must be a valid pointer to a SyncState
 * `encoded_msg_[ptr|len]` must be the address & length of a byte array
 */
intptr_t automerge_receive_sync_message(Backend *backend, SyncState *sync_state, const uint8_t *encoded_msg_ptr, uintptr_t encoded_msg_len);

/**
 * # Safety
 * This must me called with a valid backend pointer
 */
intptr_t automerge_save(Backend *backend);

/**
 * # Safety
 * sync_state must be a valid pointer to a SyncState
 */
void automerge_sync_state_free(SyncState *sync_state);

SyncState *automerge_sync_state_init(void);

/**
 * # Safety
 * This must me called with a valid backend pointer
 * change must point to a valid memory location with at least len bytes
 */
void automerge_write_change(Backend *backend, uintptr_t len, const uint8_t *change);

#endif /* automerge_h */