# Works with Python 3.8
import datetime
import io
import logging
import os
import random
import html
import json
import traceback

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

from functions import Symbol

TELEGRAM_TOKEN = os.environ["TELEGRAM"]

try:
    IEX_TOKEN = os.environ["IEX"]
except KeyError:
    IEX_TOKEN = ""
    print("Starting without an IEX Token will not allow you to get market data!")
try:
    STRIPE_TOKEN = os.environ["STRIPE"]
except KeyError:
    STRIPE_TOKEN = ""
    print("Starting without a STRIPE Token will not allow you to accept Donations!")

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=s.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=s.help_text, parse_mode=telegram.ParseMode.MARKDOWN)


def license(update, context):
    """Return bots license agreement"""

    update.message.reply_text(text=s.license, parse_mode=telegram.ParseMode.MARKDOWN)


def status(update, context):
    message = ""
    try:
        # Bot Status
        bot_resp = (
            datetime.datetime.now(update.message.date.tzinfo) - update.message.date
        )
        message += f"It took {bot_resp.total_seconds()} seconds for the bot to get your message.\n"

        # IEX Status
        message += s.iex_status() + "\n"

        # Message Status
        message += s.message_status()
    except Exception as ex:
        message += f"*\n\nERROR ENCOUNTERED:*\n{ex}\n\n*The bot encountered an error while attempting to find errors. Please contact the bot admin.*"

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


def donate(update, context):
    chat_id = update.message.chat_id

    if update.message.text.strip() == "/donate":
        update.message.reply_text(
            text=s.donate_text, parse_mode=telegram.ParseMode.MARKDOWN
        )
        return
    else:
        amount = update.message.text.replace("/donate", "").replace("$", "").strip()
    title = "Simple Stock Bot Donation"
    description = f"Simple Stock Bot Donation of ${amount}"
    payload = "simple-stock-bot"
    provider_token = STRIPE_TOKEN
    start_parameter = str(chat_id)

    print(start_parameter)
    currency = "USD"

    try:
        price = int(float(amount) * 100)
    except ValueError:
        update.message.reply_text(f"{amount} is not a valid donation amount or number.")
        return
    print(price)

    prices = [LabeledPrice("Donation:", price)]

    context.bot.send_invoice(
        chat_id,
        title,
        description,
        payload,
        provider_token,
        start_parameter,
        currency,
        prices,
    )


def precheckout_callback(update, context):
    query = update.pre_checkout_query

    if query.invoice_payload == "simple-stock-bot":
        # answer False pre_checkout_query
        query.answer(ok=True)
    else:
        query.answer(ok=False, error_message="Something went wrong...")


def successful_payment_callback(update, context):
    update.message.reply_text("Thank you for your donation!")


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.replace("/search ", "")

    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
    )

    price = s.price_reply([symbol])

    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')}\n\n{price[symbol]}",
        parse_mode=telegram.ParseMode.MARKDOWN,
    )


def chart(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.chart_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
    )

    price = s.price_reply([symbol])
    buf = io.BytesIO()
    mpf.plot(
        df,
        type="candle",
        title=f"\n${symbol.upper()}",
        volume=True,
        style="yahoo",
        savefig=dict(fname=buf, dpi=400),
    )
    buf.seek(0)

    update.message.reply_photo(
        photo=buf,
        caption=f"\n1 Month chart for ${symbol.upper()} on {datetime.date.today().strftime('%d, %b %Y')}\n\n{price[symbol]}",
        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)

    tb_list = traceback.format_exception(
        None, context.error, context.error.__traceback__
    )
    tb_string = "".join(tb_list)

    message = (
        f"An exception was raised while handling an update\n"
        f"<pre>update = {html.escape(json.dumps(update.to_dict(), indent=2, ensure_ascii=False))}"
        "</pre>\n\n"
        f"<pre>context.chat_data = {html.escape(str(context.chat_data))}</pre>\n\n"
        f"<pre>context.user_data = {html.escape(str(context.user_data))}</pre>\n\n"
        f"<pre>{html.escape(tb_string)}</pre>"
    )

    # Finally, send the message
    update.message.reply_text(text=message, parse_mode=telegram.ParseMode.HTML)
    update.message.reply_text(text="Please inform the bot admin of this issue.")


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

    # 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("license", license))
    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, run_async=True))
    dp.add_handler(CommandHandler("chart", chart, run_async=True))
    dp.add_handler(CommandHandler("crypto", crypto))
    dp.add_handler(CommandHandler("random", rand_pick))
    dp.add_handler(CommandHandler("donate", donate))
    dp.add_handler(CommandHandler("status", status))

    # 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))

    # Pre-checkout handler to final check
    dp.add_handler(PreCheckoutQueryHandler(precheckout_callback))

    # Payment success
    dp.add_handler(
        MessageHandler(Filters.successful_payment, successful_payment_callback)
    )

    # 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()