#! /usr/bin/env python

from datetime import datetime
from functools import cmp_to_key

DAYS_SR = ["Ponedeljak", "Utorak", "Sreda", "Četvrtak", "Petak", "Subota", "Nedelja"]
DAYS_EN = ["Monday ", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"]
MONTHS_SR = [
    "Januar", "Februar", "Mart", "April", "Maj", "Jun",
    "Jul", "Avgust", "Septembar", "Oktobar", "Novembar", "Decembar",
    ]
MONTHS_EN = [
    "January", "February", "March", "April", "May", "June",
    "July", "August", "September", "October", "November", "December",
    ]

today = datetime.today().date()

def parse_date(date):
    return datetime.strptime(date,"%d-%m-%Y").date()

def compare_events(one, two):
    one = parse_date(one.split(", ")[0])
    two = parse_date(two.split(", ")[0])
    if one>two:
        return 1
    elif one==two:
        return 0
    else:
        return -1

def is_past_event(event):
    return event < today

def load_events():
    events = []
    with open("dogadjaji.csv", "rt") as file:
        file.readline()
        for event in file.readlines():
            event = event.strip()
            if event != "":
                events.append(event)
    return events

def write_events(events):
    with open("dogadjaji.csv", "wt") as file:
        file.write("datum, vreme, lokacija, tema\n")
        for event in events:
            file.write(event+"\n")

def sort_events(events):
    return sorted(events, key = cmp_to_key(compare_events))


def build_html(events, dayNames, monthNames):
    newevents = []
    for event in events:
        date, time, location, title = event.split(", ")
        date = parse_date(date)
        if is_past_event(date):
            continue
        date = dayNames[date.weekday()]+", "+str(date.day)+". "+monthNames[date.month-1]+" "+str(date.year)+"."
        time = time+"h"
        future_event = []
        future_event.append("<td> "+date+" </td>")
        future_event.append("<td> "+time+" </td>")
        if "https://" in location:
            place,link = location.split("https://")
            future_event.append("<td> <a href=\"https://"+link+"\""+"> "+place.strip()+" </a> </td>")
        else:
            future_event.append("<td> "+location.strip()+" </td>")
        future_event.append("<td> "+title+" </td>")
        newevents.append("<tr>\n"+"\n".join(future_event)+"\n</tr>")
    return newevents

events = load_events()
events = sort_events(events)
write_events(events)

newevents = build_html(events, DAYS_SR, MONTHS_SR)

with open("pages/sr/events.html","wt") as file:
    file.writelines(["<h1>Događaji</h1>\n", "<table>\n", "<tr><th>Datum</th><th>Vreme</th><th>Mesto</th><th>Tema</th></tr>\n"])
    file.writelines(newevents)
    file.writelines(["</table>"])

newevents = build_html(events, DAYS_EN, MONTHS_EN)

with open("pages/en/events.html","wt") as file:
    file.writelines(["<h1>Events</h1>\n", "<table>\n", "<tr><th>Date</th><th>Time</th><th>Place</th><th>Topic</th></tr>"])
    file.writelines(newevents)
    file.writelines(["</table>"])