import logging
import os
import settings
 

import math

 
from telegram import InlineKeyboardButton, InlineKeyboardMarkup
from telegram.ext import Updater, CommandHandler, CallbackQueryHandler
 
logging.basicConfig(format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
                    level=logging.INFO)
logger = logging.getLogger(__name__)
 
 

my_data = {
    'op1': [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15],
    'op2': [21,22,23,24,25,26,27,28,29,30,31,32,33,34,35]
    }

 
def format_search(data, index=0):
    text = "*Numbers*: \n"
    for i in range(index, index + 5):
        text += f"*index*: {data[i]}\n"
    return text


def start(update, context):
    update.message.reply_text('hello')
 

def area(update, context):

    args = context.args
    for arg in args:
       print(arg)

    ########
    results = my_data['op1']
    query = "op1"
    if args:
        query = "op2"
        results = my_data['op2']
    
    N = len(results)

    context.chat_data['results'] = {
        'query': query,
        'size': N
    }

    text = format_search(results)

    #########

    keyboard = [[InlineKeyboardButton("Prev", callback_data=0),
                 InlineKeyboardButton(f"1/{math.ceil(N/5)}", callback_data='nothing'),
                 InlineKeyboardButton("Next", callback_data=5)]]
 
 
    reply_markup = InlineKeyboardMarkup(keyboard)
 
    update.message.reply_text(text, reply_markup=reply_markup, parse_mode='markdown')


def button(update, context):
    query = update.callback_query
    selected = query.data
    current = 0

    print(f"current {selected}")

    results = context.chat_data['results']
    key = results['query']
    N = results['size']

    data = my_data[key]
    
    if selected == "nothing":
        query.answer("Esse botão não faz nada.")
    else:
        current = int(selected)

    if current < 0:
        prev_button = 0
        query.answer("Você está no começo da lista.")  

    elif current >= N:
        next_button = N - 5
        query.answer("Você está no fim da lista.")
    else:
        prev_button = current - 5
        next_button = current + 5

        keyboard = [[InlineKeyboardButton("Prev", callback_data=prev_button),
                     InlineKeyboardButton(f"{current//5 + 1}/{math.ceil(N/5)}", callback_data='nothing'),
                     InlineKeyboardButton("Next", callback_data=next_button)]]
    
        reply_markup = InlineKeyboardMarkup(keyboard)

        text = format_search(data, current)

        query.edit_message_text(text=text, reply_markup=reply_markup, parse_mode='markdown')
 
 
def help(update, context):
    update.message.reply_text("Use /start to test this bot.")
 
 
def error(update, context):
    """Log Errors caused by Updates."""
    logger.warning('Update "%s" caused error "%s"', update, context.error)
 
 
def main():
    # Create the Updater and pass it your bot's token.
    # Make sure to set use_context=True to use the new context based callbacks
    # Post version 12 this will no longer be necessary
    updater = Updater(os.getenv("TOKEN"), use_context=True)
 
    updater.dispatcher.add_handler(CommandHandler('start', start))
    updater.dispatcher.add_handler(CommandHandler('area', area, pass_args=True, pass_chat_data=True))
    updater.dispatcher.add_handler(CallbackQueryHandler(button))
    updater.dispatcher.add_handler(CommandHandler('help', help))
    updater.dispatcher.add_error_handler(error)
 
    # Start the Bot
    updater.start_polling()
 
    # Run the bot until the user presses Ctrl-C or the process receives SIGINT,
    # SIGTERM or SIGABRT
    updater.idle()
 
 
if __name__ == '__main__':
    main()