# -*- coding: utf-8 -*-
# VERSION: 2.0
# AUTHOR: Davy39 <davy39@hmamail.com>, Paolo M
# CONTRIBUTORS: Simon <simon@brulhart.me>

# Copyleft


from __future__ import print_function
import urllib
import re
from html.parser import HTMLParser
from helpers import retrieve_url, headers, download_file
from novaprinter import prettyPrinter
import tempfile
import os
import json

class torrent9(object):
    # This is a fake url only for engine associations in file download
    url = "http://torent9.fr"
    name = "Torrent9 (french)"
    supported_categories = {
        "all": [""]
    }

    def __init__(self):
        self.real_url = self.find_url()

    def find_url(self):
        """Retrieve url from github repository, so it can work even if the url change"""
        link_github = "https://raw.githubusercontent.com/menegop/qbfrench/master/urls.json"
        try:
            req = urllib.request.Request(link_github, headers=headers)
            response = urllib.request.urlopen(req)
            content = response.read().decode()
            urls = json.loads(content)
            return urls['torrent9'][0]

        except urllib.error.URLError as errno:
            print(" ".join(("Connection error:", str(errno.reason))))
            return "https://www.torrent9.fm"

    def download_torrent(self, desc_link):
        """ Download file at url and write it to a file, return the path to the file and the url """
        file, path = tempfile.mkstemp()
        file = os.fdopen(file, "wb")
        # Download url
        req = urllib.request.Request(desc_link, headers=headers)
        try:
            response = urllib.request.urlopen(req)
        except urllib.error.URLError as errno:
            print(" ".join(("Connection error:", str(errno.reason))))
            return ""
        content = response.read().decode()
        pattern = '"btn btn-danger download" href="(\/.*?)">'

        link = self.real_url + re.findall(pattern, content)[0]
        print(link, desc_link)


    class TableRowExtractor(HTMLParser):
        def __init__(self, url, results):
            self.results = results

            self.in_tr = False
            self.in_table_corps = False
            self.in_div_or_anchor = False
            self.current_row = {}
            self.in_name = False
            self.url = url
            super().__init__()

        def handle_starttag(self, tag, attrs):
            if tag == 'tbody':
                # check if the table has a class of "table-corps"
                #attrs = dict(attrs)
                #if attrs.get('class') == 'table-corps':
                self.in_table_corps = True

            if self.in_table_corps and tag == 'tr':
                self.in_tr = True
                self.item_counter = 0

            if self.in_tr and tag in ['td', 'a']:
                # extract the class name of the div element if it exists
                self.in_div_or_anchor = True


                if tag == 'a':
                    attrs = dict(attrs)
                    self.current_row['link'] = self.url + attrs['href']
                    self.current_row["desc_link"] = self.url + attrs['href']

            if tag == 'h3':
                self.in_name = True
                self.current_row["name"] = []


        def handle_endtag(self, tag):
            if tag == 'tr':
                if self.in_table_corps and 'desc_link' in self.current_row and self.current_row['desc_link'] not in [res['desc_link'] for res in self.results]:
                    self.results.append(self.current_row)
                self.in_tr = False
                self.current_row = {'seeds': -1, 'leech': -1}
            if tag == 'tbody':
                self.in_table_corps = False
            if tag in ['td', 'a']:
                self.in_div_or_anchor = False
            if tag == 'h3':
                self.in_name = False
                self.current_row["name"] = " ".join(self.current_row["name"])

        def handle_data(self, data):
            if self.in_div_or_anchor:
                if self.in_name:
                    self.current_row["name"].append(data.strip())
                else:
                    if self.item_counter == 3:
                        self.current_row['size'] = data.strip()
                    if self.item_counter == 5:
                        seeds = data.strip()
                        try:
                            self.current_row['seeds'] = int(seeds)
                        except:
                            pass
                    if self.item_counter == 7:
                        leech = data.strip()
                        try:
                            self.current_row['leech'] = int(leech)
                        except:
                            pass
                    self.item_counter += 1

        def get_rows(self):
            return self.results




    def search(self, what, cat="all"):
        results = []
        len_old_result = 0
        for page in range(10):
            url = f"{self.real_url}/search_torrent/{what}/page-{page + 1}"
            try:
                data = retrieve_url(url)
                parser = self.TableRowExtractor(self.real_url, results)
                parser.feed(data)
                results = parser.results
                parser.close()
            except:
                break

            if len(results) - len_old_result == 0:
                break
            len_old_result = len(results)
        # Sort results
        good_order = [ord_res for _, ord_res in
                      sorted(zip([[int(res['seeds']), int(res['leech'])] for res in results], range(len(results))))]
        results = [results[x] for x in good_order[::-1]]

        # Fix size and add engine
        for i, res in enumerate(results):
            results[i]['size'] = unit_fr2en(res['size'])
            results[i]["engine_url"] = self.url
        # Print
        for res in results:
            prettyPrinter(res)


def unit_fr2en(size):
    """Convert french size unit to english"""
    return re.sub(
        r'([KMGTP])o',
        lambda match: match.group(1) + 'B',
        size, flags=re.IGNORECASE
    )

# For testing
#if __name__ == "__main__":
#    engine = torrent9()