#!/usr/bin/env python3

import requests
import json
import datetime
import pathlib
from jinja2 import Environment, FileSystemLoader
from flask import Flask
from flask import render_template, request

app = Flask(__name__)

gancio_instance = 'balotta.org'
templates = json.load(open('./templates.json'))
default_template = 'simple'
events_ep = f'https://{gancio_instance}/api/events'

def day2giorno(day):
    days = {
        'Monday': 'Lunedì',
        'Tuesday': 'Martedì',
        'Wednesday': 'Mercoledì',
        'Thursday': 'Giovedì',
        'Friday': 'Venerdì',
        'Saturday': 'Sabato',
        'Sunday': 'Domenica'
    }
    if day in days:
        return days[day]

def fetch_events(api_endpoint):
    events = requests.get(events_ep).json()
    for event in events:
        start_dt = datetime.datetime.fromtimestamp(event['start_datetime'])
        start_day = f"{day2giorno(start_dt.strftime('%A'))} {start_dt.strftime('%d')}"
        start_hour = start_dt.strftime("%H:%M")
        when = f"{start_day} dalle {start_hour}"
        if event['end_datetime']:
            end_dt = datetime.datetime.fromtimestamp(event['end_datetime'])
            end_day  = f"{day2giorno(start_dt.strftime('%A'))} {end_dt.strftime('%d')}"
            end_hour = end_dt.strftime("%H:%M")
            if event['multidate']:
                when = f"da {when} a {end_day}"
            when += " alle "
            when += end_hour
        event['when'] = when
        event['media'][0]['thumbnailPosition'] = f"{(event['media'][0]['focalpoint'][0] + 1) * 50}% {(event['media'][0]['focalpoint'][1] + 1) * 50}%"
    return events

@app.route("/")
def main():
    events = fetch_events(events_ep)
    return render_template('index.html',
                           events=events,
                           templates=templates,
                           default_template=default_template)


@app.route("/flyer")
def flyer():
    relevant_events = request.args.getlist('events', type=int)
    template = request.args.get("template", default=default_template, type=str)
    if template not in [ t['name'] for t in templates ]:
        return "template not found", 404
    template = [t for t in templates if t['name'] == template][0]
    events = fetch_events(events_ep)
    events = [ e for e in events if e['id'] in relevant_events ]
    params = {}
    if 'params' in template:
        params = template['params']
    return render_template(f'flyers/{template["baseTemplate"]}.html', events=events, params=params)