import csv
import sys

import bs4
import requests


WIKI_URL = (
    "https://fr.wikipedia.org/wiki/Liste_des_%C3%A9pisodes_de_D%C3%A9tective_Conan"
)
GOOD_COLOR = ["#ee8000", "#80ffff"]
CSV_COLUMNS = ["SW", "EW", "Arc", "ST", "ET", "Titre", "Date"]
VF_UNTIL = 219

EPS_BY_SEASONS = [
    28,
    26,
    28,
    24,
    28,
    28,
    31,
    26,
    35,
    31,
    30,
    38,
    36,
    37,
    39,
    25,
    33,
    42,
    40,
    40,
    35,
    43,
    39,
    41,
    83,
    40,
    38,
    28,
    40,
    35,
    99,
]

ARCS = {
    1: "Conan",
    129: "Haibara",
    179: "Vermouth",
    345: "Phone",
    425: "Kir",
    505: "Bourbon",
    705: "Train",
    783: "Rum",
    1029: "Police",
}


def extract_background(style):
    for declaration in style.split(";"):
        if declaration:
            prop, value = declaration.split(":")
            if prop.strip() == "background":
                return value.strip().lower()


def thetvdb_season(episode):
    season = 0
    index = 0

    for numb in EPS_BY_SEASONS:
        index += numb
        season += 1

        if episode <= index:
            return season


def thetvdb_episode(episode):
    season = thetvdb_season(episode)
    numb = 0

    for index in range(0, season - 1):
        numb += EPS_BY_SEASONS[index]

    return -(numb - episode)


def current_arc(episode):
    for numb in sorted(ARCS, reverse=True):
        if episode > numb:
            return ARCS[numb]


html = requests.get(WIKI_URL)
soup = bs4.BeautifulSoup(html.text, "html.parser")
tables = soup.select("table.wikitable")

out = csv.DictWriter(sys.stdout, CSV_COLUMNS)
out.writeheader()

for season, table in enumerate(tables):
    if not season:
        continue

    trs = table.select("tr")

    for row, tr in enumerate(trs):
        if row < 1:
            continue

        tds = tr.select("td")
        if len(tds) < 4:
            continue

        try:
            episode = int(tds[0].text.split(" ")[0].split("/")[0])
        except ValueError:
            continue

        if episode <= VF_UNTIL:
            continue

        color = extract_background(tr["style"])

        if not color or color in GOOD_COLOR:
            out.writerow(
                {
                    "SW": season,
                    "EW": episode,
                    "Arc": current_arc(episode),
                    "ST": thetvdb_season(episode),
                    "ET": thetvdb_episode(episode),
                    "Titre": tds[1].text.strip(),
                    "Date": tds[4].text.strip(),
                }
            )