/*
 * This file is part of the Trezor project, https://trezor.io/
 *
 * Copyright (c) SatoshiLabs
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "flash.h"

#include "embed/extmod/trezorobj.h"

/// class FlashOTP:
///     """
///     """
typedef struct _mp_obj_FlashOTP_t {
  mp_obj_base_t base;
} mp_obj_FlashOTP_t;

/// def __init__(self) -> None:
///     """
///     """
STATIC mp_obj_t mod_trezorio_FlashOTP_make_new(const mp_obj_type_t *type,
                                               size_t n_args, size_t n_kw,
                                               const mp_obj_t *args) {
  mp_arg_check_num(n_args, n_kw, 0, 0, false);
  mp_obj_FlashOTP_t *o = m_new_obj(mp_obj_FlashOTP_t);
  o->base.type = type;
  return MP_OBJ_FROM_PTR(o);
}

/// def write(self, block: int, offset: int, data: bytes) -> None:
///     """
///     Writes data to OTP flash
///     """
STATIC mp_obj_t mod_trezorio_FlashOTP_write(size_t n_args,
                                            const mp_obj_t *args) {
  uint8_t block = trezor_obj_get_uint8(args[1]);
  uint8_t offset = trezor_obj_get_uint8(args[2]);
  mp_buffer_info_t data;
  mp_get_buffer_raise(args[3], &data, MP_BUFFER_READ);
  if (sectrue != flash_otp_write(block, offset, data.buf, data.len)) {
    mp_raise_ValueError("write failed");
  }
  return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mod_trezorio_FlashOTP_write_obj, 4,
                                           4, mod_trezorio_FlashOTP_write);

/// def read(self, block: int, offset: int, data: bytearray) -> None:
///     """
///     Reads data from OTP flash
///     """
STATIC mp_obj_t mod_trezorio_FlashOTP_read(size_t n_args,
                                           const mp_obj_t *args) {
  uint8_t block = trezor_obj_get_uint8(args[1]);
  uint8_t offset = trezor_obj_get_uint8(args[2]);
  mp_buffer_info_t data;
  mp_get_buffer_raise(args[3], &data, MP_BUFFER_WRITE);
  if (sectrue != flash_otp_read(block, offset, data.buf, data.len)) {
    mp_raise_ValueError("read failed");
  }
  return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mod_trezorio_FlashOTP_read_obj, 4, 4,
                                           mod_trezorio_FlashOTP_read);

/// def lock(self, block: int) -> None:
///     """
///     Lock OTP flash block
///     """
STATIC mp_obj_t mod_trezorio_FlashOTP_lock(mp_obj_t self, mp_obj_t block) {
  uint8_t b = trezor_obj_get_uint8(block);
  if (sectrue != flash_otp_lock(b)) {
    mp_raise_ValueError("lock failed");
  }
  return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_trezorio_FlashOTP_lock_obj,
                                 mod_trezorio_FlashOTP_lock);

/// def is_locked(self, block: int) -> bool:
///     """
///     Is OTP flash block locked?
///     """
STATIC mp_obj_t mod_trezorio_FlashOTP_is_locked(mp_obj_t self, mp_obj_t block) {
  uint8_t b = trezor_obj_get_uint8(block);
  return (sectrue == flash_otp_is_locked(b)) ? mp_const_true : mp_const_false;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_trezorio_FlashOTP_is_locked_obj,
                                 mod_trezorio_FlashOTP_is_locked);

STATIC const mp_rom_map_elem_t mod_trezorio_FlashOTP_locals_dict_table[] = {
    {MP_ROM_QSTR(MP_QSTR_read), MP_ROM_PTR(&mod_trezorio_FlashOTP_read_obj)},
    {MP_ROM_QSTR(MP_QSTR_write), MP_ROM_PTR(&mod_trezorio_FlashOTP_write_obj)},
    {MP_ROM_QSTR(MP_QSTR_lock), MP_ROM_PTR(&mod_trezorio_FlashOTP_lock_obj)},
    {MP_ROM_QSTR(MP_QSTR_is_locked),
     MP_ROM_PTR(&mod_trezorio_FlashOTP_is_locked_obj)},
};
STATIC MP_DEFINE_CONST_DICT(mod_trezorio_FlashOTP_locals_dict,
                            mod_trezorio_FlashOTP_locals_dict_table);

STATIC const mp_obj_type_t mod_trezorio_FlashOTP_type = {
    {&mp_type_type},
    .name = MP_QSTR_FlashOTP,
    .make_new = mod_trezorio_FlashOTP_make_new,
    .locals_dict = (void *)&mod_trezorio_FlashOTP_locals_dict,
};
