#!/bin/python3
import os
import sys
import logging
import requests
import json
import argparse

sys.path.append(os.path.abspath("../"))
from subject import main

from lib import encryption_functs

logging.basicConfig(format='%(levelname)s\t- %(message)s')
logger = logging.getLogger()
logger.setLevel(logging.INFO)

state = main(sys.argv)

# session file - document name - file
def addDoc(args):
    parser = argparse.ArgumentParser()

    parser.add_argument("-k", '--key', nargs=1, help="Path to the key file")
    parser.add_argument("-r", '--repo', nargs=1, help="Address:Port of the repository")
    parser.add_argument("-v", '--verbose', help="Increase verbosity", action="store_true")

    parser.add_argument('session', nargs='?', default=None)
    parser.add_argument('name', nargs='?', default=None)
    parser.add_argument('file', nargs='?', default=None)

    args = parser.parse_args()

    if not args.session or not args.name or not args.file:
        logger.error("Need session file, document's name and file to upload.")
        sys.exit(-1)

    if (not os.path.isfile(args.session)):
        logger.error("File '" + args.session + "' not found.")
        sys.exit(-1)

    if (not os.path.isfile(args.file)):
        logger.error("File '" + args.file + "' not found")
        sys.exit(-1)

    # Get pub key
    pubkey = encryption_functs.load_public_key(state['PUB_KEY'])
    
    #encrypt content
    with open(args.file, 'rb') as f:
        content = f.read()

    content = encryption_functs.encrypt_file(pubkey, content)

    doc = {'session_file' : args.session, 'document_name' : args.name, 'content' : content}
    
    try:
        req = requests.post(f'http://{state['REP_ADDRESS']}/file/upload', json=json.dumps(doc))
        req.raise_for_status()

    except requests.exceptions.RequestException as errex: 
        logger.error("Failed to obtain response from server.")
        sys.exit(1)

    sys.exit(0)

if __name__ == '__main__':
    addDoc(sys.argv[1:])