from flask import Flask, render_template, request
import random
import datetime
import json
import os
import time

from app import app

def _all_stops():
    with open('lats_lons.txt') as f:
        towns = json.loads("".join(f.read()))

    start_date = datetime.datetime(2018, 5, 15)

    filtered_towns = []
    last_town = ""
    for idx, town in enumerate(towns):
        town['id'] = town['city'].split(',')[0].replace(' ', '')
        town['day'] = idx
        time_diff = datetime.timedelta(idx)
        date_ = start_date + time_diff
        town['date_'] = date_.strftime("%b.%d.%Y")
        if town['city'] != last_town:
            filtered_towns.append(town)
        else:
            if 'visits' in filtered_towns[-1]:
                filtered_towns[-1]['visits'] += 1
            else:
                filtered_towns[-1]['visits'] = 1
            
            end_date = start_date + time_diff + datetime.timedelta(filtered_towns[-1]['visits'] - 1)
            filtered_towns[-1]['final_date'] = end_date.strftime("%b.%d.%Y")

        last_town = town['city']
        if 'buck' in town and town['buck'] == "stops here":
            break
    return filtered_towns

def _get_stops():
    current_time = datetime.datetime.now()
    current_year = current_time.year
    start_day_anniversairy = datetime.datetime(current_year, 5, 15)
    historical_days_progressed = (current_time - start_day_anniversairy).days 

    stops = _all_stops()

    if historical_days_progressed <= len(stops):
        limited_towns = [town for town in stops if town['day'] <= historical_days_progressed]
        return list(reversed(limited_towns))
    else:
        return stops

def _is_it_that_time_of_year():
    (datetime.datetime.now() - datetime.datetime(datetime.datetime.now().year, 5, 15)).days <= 90

@app.route('/')
def home():
    return render_template('home.html')

@app.route('/map')
def map():
    filtered_towns = _get_stops()
    try:
        return render_template('map.html', towns=filtered_towns)
    except Exception as e:
        print(e)

@app.route('/random')
def random_town():
    towns = _all_stops()

    try:
        random_town = random.choice(towns)
        return render_template('random.html', town=random_town)
    except Exception as e:
        print(e)

@app.route('/stops')
def stops():
    towns = _get_stops()
    is_historical_period = _is_it_that_time_of_year()
    try:
        return render_template('stops.html', args={"towns": towns, "is_historical_period": is_historical_period, "todays_date": time.strftime("%B %d")})
    except Exception as e:
        print(e)

@app.route('/faq')
def faq():
    return render_template('faq.html')

@app.route('/glossary')
def glossary():
    return render_template('glossary.html')

@app.route('/highlights')
def highlights():
    img_highlights = os.listdir('static/photos/highlights')
    img_highlights.sort()
    first_img = img_highlights[0]
    others = img_highlights[1:]
    return render_template('highlights.html', first_img=first_img, imgs=others)

@app.route('/town/<town_name>')
def town(town_name):
    towns = _get_stops()
    town, = (t for t in towns if t['id'] == town_name)
    return render_template('town.html', town=town)