/**
 * @file    vfs_manager.h
 * @brief   Methods that build and manipulate a virtual file system
 *
 * DAPLink Interface Firmware
 * Copyright (c) 2009-2016, ARM Limited, All Rights Reserved
 * SPDX-License-Identifier: Apache-2.0
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef VFS_MANAGER_USER_H
#define VFS_MANAGER_USER_H

#include "platform.h"
#include "virtual_fs.h"

#ifdef __cplusplus
extern "C" {
#endif

/* Callable from anywhere */

// Enable or disable the virtual filesystem
void vfs_mngr_fs_enable(bool enabled);

// Remount the virtual filesystem
void vfs_mngr_fs_remount(bool force_full);


/* Callable only from the thread running the virtual fs */

// Initialize the VFS manager
// Must be called after USB has been initialized (usbd_init())
// Notes: Must only be called from the thread runnning USB
void vfs_mngr_init(bool enabled);

// Run the vfs manager state machine
// Notes: Must only be called from the thread runnning USB
void vfs_mngr_periodic(uint32_t elapsed_ms);

// Return the status of the last transfer or E_SUCCESS
// if none have been performed yet
error_t vfs_mngr_get_transfer_status(void);


/* Use functions */

// Build the filesystem by calling vfs_init and then adding files with vfs_create_file
void vfs_user_build_filesystem(void);

// Called when a file on the filesystem changes
void vfs_user_file_change_handler(const vfs_filename_t filename, vfs_file_change_t change, vfs_file_t file, vfs_file_t new_file_data);

// Called when VFS is disconnecting
void vfs_user_disconnecting(void);



// --- interface ---
void vfs_if_usbd_msc_init(void);
void vfs_if_usbd_msc_read_sect(uint32_t sector, uint8_t *buf, uint32_t num_of_sectors);
void vfs_if_usbd_msc_write_sect(uint32_t sector, uint8_t *buf, uint32_t num_of_sectors);

typedef struct {
    uint32_t MemorySize;
    uint16_t BlockSize;
    uint32_t BlockGroup; // LUN?
    uint32_t BlockCount;
//    uint8_t *BlockBuf; // apparently unused :thaenkin:
    bool MediaReady;
    bool MediaChanged;
} vfs_info_t;

extern volatile vfs_info_t vfs_info;

#ifdef __cplusplus
}
#endif

#endif// VFS_MANAGER_USER_H