#!/usr/bin/env python
# -*- coding: UTF-8 -*-
#
# Copyright 2020-2022 NXP
#
# SPDX-License-Identifier: BSD-3-Clause

"""Console script for Elf2SB."""
import os
import sys
from typing import Dict, List

import click
from click_option_group import RequiredMutuallyExclusiveOptionGroup, optgroup

from spsdk import __version__ as spsdk_version
from spsdk.apps.utils.utils import SPSDKAppError, catch_spsdk_error
from spsdk.exceptions import SPSDKError
from spsdk.image import SB3_SCH_FILE, TrustZone, get_mbi_class
from spsdk.image.mbimg import mbi_generate_config_templates, mbi_get_supported_families
from spsdk.sbfile.sb2.images import generate_SB21
from spsdk.sbfile.sb31.images import SecureBinary31
from spsdk.utils.misc import load_configuration, write_file
from spsdk.utils.schema_validator import ValidationSchemas, check_config

SUPPORTED_FAMILIES = mbi_get_supported_families()


def generate_trustzone_binary(tzm_conf: str) -> None:
    """Generate TrustZone binary from json configuration file."""
    config_data = load_configuration(tzm_conf)
    check_config(config_data, TrustZone.get_validation_schemas_family())
    check_config(config_data, TrustZone.get_validation_schemas(config_data["family"]))
    trustzone = TrustZone.from_config(config_data)
    tz_data = trustzone.export()
    output_file = config_data["tzpOutputFile"]
    write_file(tz_data, output_file, mode="wb")
    click.echo(f"Success. (Trustzone binary: {output_file} created.)")


def generate_config_templates(family: str, output_folder: str) -> None:
    """Generate all possible configuration for selected family."""
    if not family:
        raise SPSDKError("The chip family must be specified.")

    templates: Dict[str, str] = {}
    # 1: Generate all configuration for MBI
    templates.update(mbi_generate_config_templates(family))
    # 2: Optionally add TrustZone Configuration file
    templates.update(TrustZone.generate_config_template(family))
    # 3: Optionally add Secure Binary v3.1 Configuration file
    templates.update(SecureBinary31.generate_config_template(family))

    # And generate all config templates files
    for key, val in templates.items():
        file_name = f"{key}.yml"
        if os.path.isfile(output_folder):
            raise SPSDKError(f"The specified path {output_folder} is file.")
        if not os.path.isdir(output_folder):
            os.mkdir(output_folder)
        full_file_name = os.path.join(output_folder, file_name)
        if not os.path.isfile(full_file_name):
            click.echo(f"Creating {file_name} template file.")
            with open(full_file_name, "w") as f:
                f.write(val)
        else:
            click.echo(f"Skip creating {file_name}, this file already exists.")


def generate_master_boot_image(image_conf: str) -> None:
    """Generate MasterBootImage from json configuration file.

    :param image_conf: master boot image json configuration file.
    """
    config_data = load_configuration(image_conf)
    mbi_cls = get_mbi_class(config_data)
    check_config(config_data, mbi_cls.get_validation_schemas())
    mbi = mbi_cls()
    mbi.load_from_config(config_data)
    mbi_data = mbi.export()

    mbi_output_file_path = config_data["masterBootOutputFile"]
    write_file(mbi_data, mbi_output_file_path, mode="wb")

    click.echo(f"Success. (Master Boot Image: {mbi_output_file_path} created.)")


def generate_secure_binary_21(
    bd_file_path: str,
    output_file_path: str,
    key_file_path: str,
    private_key_file_path: str,
    signing_certificate_file_paths: List[str],
    root_key_certificate_paths: List[str],
    hoh_out_path: str,
    external_files: List[str],
) -> None:
    """Generate SecureBinary image from BD command file.

    :param bd_file_path: path to BD file.
    :param output_file_path: output path to generated secure binary file.
    :param key_file_path: path to key file.
    :param private_key_file_path: path to private key file for signing. This key
    relates to last certificate from signing certificate chain.
    :param signing_certificate_file_paths: signing certificate chain.
    :param root_key_certificate_paths: paths to root key certificate(s) for
    verifying other certificates. Only 4 root key certificates are allowed,
    others are ignored. One of the certificates must match the first certificate
    passed in signing_certificate_file_paths.
    :param hoh_out_path: output path to hash of hashes of root keys. If set to
    None, 'hash.bin' is created under working directory.
    :param external_files: external files referenced from BD file.

    :raises SPSDKAppError: If incorrect bf file is provided
    """
    if output_file_path is None:
        raise SPSDKAppError("Error: no output file was specified")
    try:
        sb2_data = generate_SB21(
            bd_file_path=str(bd_file_path),
            key_file_path=str(key_file_path),
            private_key_file_path=str(private_key_file_path),
            signing_certificate_file_paths=[str(x) for x in signing_certificate_file_paths],
            root_key_certificate_paths=[str(x) for x in root_key_certificate_paths],
            hoh_out_path=str(hoh_out_path),
            external_files=[str(x) for x in external_files],
        )
        write_file(sb2_data, str(output_file_path), mode="wb")
    except SPSDKError as exc:
        raise SPSDKAppError(f"The SB2.1 file generation failed: ({str(exc)}).") from exc
    else:
        click.echo(f"Success. (Secure binary 2.1: {output_file_path} created.)")


def generate_secure_binary_31(container_conf: str) -> None:
    """Generate SecureBinary image from json configuration file.

    :param container_conf: configuration file
    :raises SPSDKError: Raised when there is no signing key
    """
    config_data = load_configuration(container_conf)
    schemas = SecureBinary31.get_validation_schemas(include_test_configuration=True)
    schemas.append(ValidationSchemas.get_schema_file(SB3_SCH_FILE)["sb3_output"])
    check_config(config_data, schemas)
    sb3 = SecureBinary31.load_from_config(config_data)
    sb3_data = sb3.export()

    sb3_output_file_path = config_data["containerOutputFile"]
    write_file(sb3_data, sb3_output_file_path, mode="wb")

    click.echo(f"Success. (Secure binary 3.1: {sb3_output_file_path} created.)")


@click.command(name="elftosb", no_args_is_help=True)
@optgroup.group("Output file type generation selection.", cls=RequiredMutuallyExclusiveOptionGroup)
@optgroup.option(
    "-c",
    "--command",
    type=click.Path(exists=True, file_okay=True),
    help="BD configuration file to produce secure binary v2.x",
)
@optgroup.option(
    "-J",
    "--image-conf",
    type=click.Path(exists=True, file_okay=True),
    help="YAML/JSON image configuration file to produce master boot image",
)
@optgroup.option(
    "-j",
    "--container-conf",
    type=click.Path(exists=True, file_okay=True),
    help="YAML/JSON  container configuration file to produce secure binary v3.x",
)
@optgroup.option(
    "-T",
    "--tzm-conf",
    type=click.Path(exists=True, file_okay=True),
    help="YAML/JSON trust zone configuration file to produce trust zone binary",
)
@optgroup.option(
    "-Y",
    "--config-template",
    type=click.Path(dir_okay=True, file_okay=False),
    help="Path to store all configuration templates for selected family",
)
@click.option(
    "-f",
    "--chip-family",
    default="lpc55s3x",
    help="Select the chip family (default is lpc55s3x), this field is used with -Y/--config_template option only.",
    type=click.Choice(SUPPORTED_FAMILIES, case_sensitive=False),
)
@optgroup.group("Command file options (SB2.x file format only)")
@optgroup.option("-o", "--output", type=click.Path(), help="Output file path.")
@optgroup.option(
    "-k", "--key", type=click.Path(exists=True), help="Add a key file and enable encryption."
)
@optgroup.option(
    "-s", "--pkey", type=click.Path(exists=True), help="Path to private key for signing."
)
@optgroup.option(
    "-S",
    "--cert",
    type=click.Path(exists=True),
    multiple=True,
    help="Path to certificate files for signing. The first certificate will be \
the self signed root key certificate.",
)
@optgroup.option(
    "-R",
    "--root-key-cert",
    type=click.Path(exists=True),
    multiple=True,
    help="Path to root key certificate file(s) for verifying other certificates. \
Only 4 root key certificates are allowed, others are ignored. \
One of the certificates must match the first certificate passed \
with -S/--cert arg.",
)
@optgroup.option(
    "-h",
    "--hash-of-hashes",
    type=click.Path(),
    help="Path to output hash of hashes of root keys. If argument is not \
provided, then by default the tool creates hash.bin in the working directory.",
)
@click.version_option(spsdk_version, "--version")
@click.help_option("--help")
@click.argument("external", type=click.Path(), nargs=-1)
def main(
    chip_family: str,
    command: str,
    output: str,
    key: str,
    pkey: str,
    cert: List[str],
    root_key_cert: List[str],
    image_conf: str,
    container_conf: str,
    tzm_conf: str,
    config_template: str,
    hash_of_hashes: str,
    external: List[str],
) -> None:
    """Tool for generating TrustZone, MasterBootImage and SecureBinary images.

    !!! The ELFTOSB tool is deprecated, use new NXPIMAGE tool from SPSDK for new projects !!!
    """
    if command:
        if output is None:
            raise SPSDKAppError("Error: no output file was specified")
        generate_secure_binary_21(
            bd_file_path=command,
            output_file_path=output,
            key_file_path=key,
            private_key_file_path=pkey,
            signing_certificate_file_paths=cert,
            root_key_certificate_paths=root_key_cert,
            hoh_out_path=hash_of_hashes,
            external_files=external,
        )

    if image_conf:
        generate_master_boot_image(image_conf)

    if container_conf:
        generate_secure_binary_31(container_conf)

    if tzm_conf:
        generate_trustzone_binary(tzm_conf)

    if config_template:
        generate_config_templates(chip_family, config_template)


@catch_spsdk_error
def safe_main() -> None:
    """Call the main function."""
    sys.exit(main())  # pylint: disable=no-value-for-parameter


if __name__ == "__main__":
    safe_main()
