#!/usr/bin/env python3
# Bookmark Archiver
# Nick Sweeting 2017 | MIT License
# https://github.com/pirate/bookmark-archiver

import os
import sys

from datetime import datetime
from subprocess import run

from parse import parse_export
from index import dump_index
from fetch import dump_website
from config import (
    ARCHIVE_PERMISSIONS,
    check_dependencies,
)

DESCRIPTION = 'Bookmark Archiver: Create a browsable html archive of a list of links.'
__DOCUMENTATION__ = 'https://github.com/pirate/bookmark-archiver'


def create_archive(export_file, service=None, resume=None):
    """update or create index.html and download archive of all links"""

    with open(export_file, 'r', encoding='utf-8') as f:
        print('[+] [{}] Starting archive from {} export file.'.format(
            datetime.now().strftime('%Y-%m-%d %H:%M:%S'),
            export_file
        ))

        links, service = parse_export(f, service=service)

        if resume:
            try:
                links = [
                    link
                    for link in links
                    if float(link['timestamp']) >= float(resume)
                ]
            except TypeError:
                print('Resume value and all timestamp values must be valid numbers.')

    if not links or not service:
        print('[X] No links found in {}, is it a {} export file?'.format(export_file, service))
        raise SystemExit(1)

    if not os.path.exists(service):
        os.makedirs(service)

    if not os.path.exists(os.path.join(service, 'archive')):
        os.makedirs(os.path.join(service, 'archive'))

    dump_index(links, service)

    run(['chmod', '-R', ARCHIVE_PERMISSIONS, service], timeout=30)

    print('[*] [{}] Created archive index with {} links.'.format(
        datetime.now().strftime('%Y-%m-%d %H:%M:%S'),
        len(links),
    ))

    check_dependencies()

    for link in links:
        dump_website(link, service)

    print('[√] [{}] Archive update complete.'.format(datetime.now().strftime('%Y-%m-%d %H:%M:%S')))


if __name__ == '__main__':
    argc = len(sys.argv)

    if argc < 2 or sys.argv[1] in ('-h', '--help', 'help'):
        print(DESCRIPTION)
        print("Documentation:     {}".format(__DOCUMENTATION__))
        print("")
        print("Usage:")
        print("    ./archive.py ~/Downloads/bookmarks_export.html")
        print("")
        raise SystemExit(0)

    export_file = sys.argv[1]                                       # path to export file
    export_type = sys.argv[2] if argc > 2 else None                 # select export_type for file format select
    resume_from = sys.argv[3] if argc > 3 else None                 # timestamp to resume dowloading from

    create_archive(export_file, service=export_type, resume=resume_from)