"""Onionr - Private P2P Communication.

This file handles the commands for adding
and getting files from the Onionr network
"""
import sys
import os
import logger
from onionrblocks.onionrblockapi import Block
import onionrexceptions
from onionrutils import stringvalidators
from etc import onionrvalues
from onionrblocks import insert
"""
    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 <https://www.gnu.org/licenses/>.
"""

_ORIG_DIR = onionrvalues.ORIG_RUN_DIR_ENV_VAR


def _get_dir(path: str) -> str:
    if not os.getenv(_ORIG_DIR) is None:
        return os.getenv(_ORIG_DIR) + '/' + path  # type: ignore
    else:
        return path


def add_html(singleBlock=True, blockType='html'):
    """Create one-off web page from HTML file, no ext resources."""
    add_file(blockType=blockType)


add_html.onionr_help = "Adds an HTML file into Onionr. Does "   # type: ignore
add_html.onionr_help += "not include dependant resources"  # type: ignore


def add_file(blockType='bin'):
    """Add a file to the onionr network."""
    if len(sys.argv) >= 3:
        filename = sys.argv[2]

        if not os.path.exists(_get_dir(filename)):
            logger.error(
                'That file does not exist. Improper path (specify full path)?',
                terminal=True)
            return
        logger.info('Adding file, this might take a long time.',
                    terminal=True)
        try:
            with open(_get_dir(filename), 'rb') as single_file:
                blockhash = insert(single_file.read(), header=blockType)
            if len(blockhash) > 0:
                logger.info('File %s saved in block %s' %
                            (filename, blockhash), terminal=True)
        except Exception as err:  # pylint: disable=W0703
            logger.error('Failed to save file in block ' +
                         str(err), timestamp=False, terminal=True)
    else:
        logger.error('%s add-file <filename>' %
                     sys.argv[0], timestamp=False, terminal=True)


add_file.onionr_help = "<file path> Add a file into "  # type: ignore
add_file.onionr_help += "the Onionr network"  # type: ignore


def get_file():
    """Get a file from onionr blocks."""
    try:
        file_name = _get_dir(sys.argv[2])
        bHash = sys.argv[3]
    except IndexError:
        logger.error("Syntax %s %s" % (
            sys.argv[0], '/path/to/filename <blockhash>'), terminal=True)
    else:
        logger.info(file_name, terminal=True)

        if os.path.exists(file_name):
            logger.error("File already exists", terminal=True)
            return
        if not stringvalidators.validate_hash(bHash):
            logger.error('Block hash is invalid', terminal=True)
            return

        try:
            with open(file_name, 'wb') as my_file:
                my_file.write(Block(bHash).bcontent)
        except onionrexceptions.NoDataAvailable:
            logger.error(
                'That block is not available. Trying again later may work.',
                terminal=True)


get_file.onionr_help = "<file path> <block hash>: Download "  # type: ignore
get_file.onionr_help += "a file from the onionr network."  # type: ignore