# Works with Python 3.8
import datetime
import io
import logging
import os
import random

import mplfinance as mpf
import telegram
from telegram import InlineQueryResultArticle, InputTextMessageContent
from telegram.ext import (
    CommandHandler,
    Filters,
    InlineQueryHandler,
    MessageHandler,
    Updater,
)

from functions import Symbol

TELEGRAM_TOKEN = os.environ["TELEGRAM"]
IEX_TOKEN = os.environ["IEX"]

s = Symbol(IEX_TOKEN)
# Enable logging
logging.basicConfig(
    format="%(asctime)s - %(name)s - %(levelname)s - %(message)s", level=logging.INFO
)

logger = logging.getLogger(__name__)
print("Bot Online")


def start(update, context):
    """Send a message when the command /start is issued."""
    update.message.reply_text(
        text=Symbol.help_text, parse_mode=telegram.ParseMode.MARKDOWN
    )


def help(update, context):
    """Send link to docs when the command /help is issued."""

    update.message.reply_text(
        text=Symbol.help_text, parse_mode=telegram.ParseMode.MARKDOWN
    )


def symbol_detect(update, context):
    """
    Runs on any message that doesn't have a command and searches for symbols, then returns the prices of any symbols found.
    """
    message = update.message.text
    chat_id = update.message.chat_id
    symbols = s.find_symbols(message)

    if symbols:
        # Let user know bot is working
        context.bot.send_chat_action(chat_id=chat_id, action=telegram.ChatAction.TYPING)

        for reply in s.price_reply(symbols).items():

            update.message.reply_text(
                text=reply[1], parse_mode=telegram.ParseMode.MARKDOWN
            )


def dividend(update, context):
    """
    waits for /dividend or /div command and then finds dividend info on that symbol.
    """
    message = update.message.text
    chat_id = update.message.chat_id
    symbols = s.find_symbols(message)

    if symbols:
        context.bot.send_chat_action(chat_id=chat_id, action=telegram.ChatAction.TYPING)

        for reply in s.dividend_reply(symbols).items():

            update.message.reply_text(
                text=reply[1], parse_mode=telegram.ParseMode.MARKDOWN
            )


def news(update, context):
    """
    waits for /news command and then finds news info on that symbol.
    """
    message = update.message.text
    chat_id = update.message.chat_id
    symbols = s.find_symbols(message)

    if symbols:
        context.bot.send_chat_action(chat_id=chat_id, action=telegram.ChatAction.TYPING)

        for reply in s.news_reply(symbols).items():
            update.message.reply_text(
                text=reply[1], parse_mode=telegram.ParseMode.MARKDOWN
            )


def info(update, context):
    """
    waits for /info command and then finds info on that symbol.
    """
    message = update.message.text
    chat_id = update.message.chat_id
    symbols = s.find_symbols(message)

    if symbols:
        context.bot.send_chat_action(chat_id=chat_id, action=telegram.ChatAction.TYPING)

        for reply in s.info_reply(symbols).items():
            update.message.reply_text(
                text=reply[1], parse_mode=telegram.ParseMode.MARKDOWN
            )


def search(update, context):
    message = update.message.text
    chat_id = update.message.chat_id

    usage = """
    To use this command 
    """

    queries = s.search_symbols(message)[:6]
    if queries:
        reply = "*Search Results:*\n`$ticker: Company Name`\n"
        for query in queries:
            reply += "`" + query[1] + "`\n"
        update.message.reply_text(text=reply, parse_mode=telegram.ParseMode.MARKDOWN)


def intra(update, context):
    # TODO: Document usage of this command. https://iexcloud.io/docs/api/#historical-prices

    message = update.message.text
    chat_id = update.message.chat_id

    symbol = s.find_symbols(message)[0]

    df = s.intra_reply(symbol)
    if df.empty:
        update.message.reply_text(
            text="Invalid symbol please see `/help` for usage details.",
            parse_mode=telegram.ParseMode.MARKDOWN,
        )

    context.bot.send_chat_action(
        chat_id=chat_id, action=telegram.ChatAction.UPLOAD_PHOTO
    )

    buf = io.BytesIO()
    mpf.plot(
        df,
        type="renko",
        title=f"\n${symbol.upper()}",
        volume=True,
        style="yahoo",
        mav=20,
        savefig=dict(fname=buf, dpi=400),
    )
    buf.seek(0)

    update.message.reply_photo(
        photo=buf,
        caption=f"\nIntraday chart for ${symbol.upper()} on {datetime.date.today().strftime('%d, %b %Y')}",
        parse_mode=telegram.ParseMode.MARKDOWN,
    )


def stat(update, context):
    """
    https://iexcloud.io/docs/api/#key-stats
    """
    message = update.message.text
    chat_id = update.message.chat_id
    symbols = s.find_symbols(message)

    if symbols:
        context.bot.send_chat_action(chat_id=chat_id, action=telegram.ChatAction.TYPING)

        for reply in s.stat_reply(symbols).items():
            update.message.reply_text(
                text=reply[1], parse_mode=telegram.ParseMode.MARKDOWN
            )


def crypto(update, context):
    """
    https://iexcloud.io/docs/api/#cryptocurrency-quote
    """
    context.bot.send_chat_action(
        chat_id=update.message.chat_id, action=telegram.ChatAction.TYPING
    )
    message = update.message.text

    reply = s.crypto_reply(message)

    if reply:
        update.message.reply_text(text=reply, parse_mode=telegram.ParseMode.MARKDOWN)
    else:
        update.message.reply_text(
            text=f"Pair: {message} returned an error.",
            parse_mode=telegram.ParseMode.MARKDOWN,
        )


def inline_query(update, context):
    """
    Handles inline query.
    Does a fuzzy search on input and returns stocks that are close.
    """

    matches = s.search_symbols(update.inline_query.query)

    results = []
    for match in matches:
        try:
            price = s.price_reply([match[0]])[match[0]]
            results.append(
                InlineQueryResultArticle(
                    match[0],
                    title=match[1],
                    input_message_content=InputTextMessageContent(
                        price, parse_mode=telegram.ParseMode.MARKDOWN
                    ),
                )
            )
        except TypeError:
            logging.warning(str(match))
            pass

        if len(results) == 5:
            update.inline_query.answer(results)
            return


def rand_pick(update, context):

    choice = random.choice(list(s.symbol_list["description"]))
    hold = (
        datetime.date.today() + datetime.timedelta(random.randint(1, 365))
    ).strftime("%b %d, %Y")

    update.message.reply_text(
        text=f"{choice}\nBuy and hold until: {hold}",
        parse_mode=telegram.ParseMode.MARKDOWN,
    )


def error(update, context):
    """Log Errors caused by Updates."""
    logger.warning('Update "%s" caused error "%s"', update, error)


def main():
    """Start the context.bot."""
    # Create the EventHandler and pass it your bot's token.
    updater = Updater(TELEGRAM_TOKEN, use_context=True)

    # Get the dispatcher to register handlers
    dp = updater.dispatcher

    # on different commands - answer in Telegram
    dp.add_handler(CommandHandler("start", start))
    dp.add_handler(CommandHandler("help", help))
    dp.add_handler(CommandHandler("dividend", dividend))
    dp.add_handler(CommandHandler("div", dividend))
    dp.add_handler(CommandHandler("news", news))
    dp.add_handler(CommandHandler("info", info))
    dp.add_handler(CommandHandler("stat", stat))
    dp.add_handler(CommandHandler("stats", stat))
    dp.add_handler(CommandHandler("search", search))
    dp.add_handler(CommandHandler("intraday", intra))
    dp.add_handler(CommandHandler("intra", intra))
    dp.add_handler(CommandHandler("crypto", crypto))
    dp.add_handler(CommandHandler("random", rand_pick))

    # on noncommand i.e message - echo the message on Telegram
    dp.add_handler(MessageHandler(Filters.text, symbol_detect))

    # Inline Bot commands
    dp.add_handler(InlineQueryHandler(inline_query))

    # log all errors
    dp.add_error_handler(error)

    # Start the Bot
    updater.start_polling()

    # Run the bot until you press Ctrl-C or the process receives SIGINT,
    # SIGTERM or SIGABRT. This should be used most of the time, since
    # start_polling() is non-blocking and will stop the bot gracefully.
    updater.idle()


if __name__ == "__main__":
    main()