import unicodedata
import urllib
from collections import defaultdict as ddict
from dataclasses import dataclass
from json import loads

import pygal
import pyrqlite.dbapi2 as dbapi2
import requests

connection = dbapi2.connect(
    host="10.61.0.1",
    user="root",
    port=4001,
    password="",
)


def remove_accents(input_str):
    nfkd_form = unicodedata.normalize("NFKD", input_str)
    return "".join([c for c in nfkd_form if not unicodedata.combining(c)])


def handle(req):
    """handle a request to the function
    Args:
        req (str): request body

    {"i": ["nombre1, nombre2"]}

    """
    nombres = []
    try:
        nombres = loads(req)
        nombres = nombres["i"].split(",")
        nombres = [remove_accents(x.strip().lower()) for x in nombres]
        nombres = [n for n in nombres if n]
    except Exception:
        pass

    if not nombres:
        nombres = ["maria", "juan"]

    chart = pygal.Line(
        height=200, fill=True, human_readable=True, show_minor_x_labels=False
    )
    chart.x_labels = [str(x) for x in range(1922, 2015)]
    chart.x_labels_major = [str(x) if x % 10 == 0 else "" for x in range(1922, 2015)]
    for nombre in nombres:
        datos = ddict(int)
        with connection.cursor() as cursor:
            sql = """
                SELECT anio, contador, nombre
                FROM nombres
                WHERE nombre = :nombre
                ORDER BY anio
                """
            cursor.execute(sql, {"nombre": nombre})
            datos.update({r["anio"]: r["contador"] for r in cursor.fetchall()})
            chart.add(nombre.title(), [datos[x] for x in range(1922, 2015)])

    chart.x_labels = [str(n) for n in range(1922, 2015)]
    chart.x_labels_major = [str(n) for n in range(1920, 2020, 10)]

    # return Response(chart.render(is_unicode=True), mimetype="image/svg+xml")
    return chart.render(is_unicode=True), 200, {"Content-Type": "image/svg+xml"}