#!/usr/bin/env python
"""Main Terminal Module"""
__docformat__ = "numpy"

import argparse
import os
import sys
from datetime import datetime, timedelta
from typing import List
import pandas as pd
import yfinance as yf
from alpha_vantage.timeseries import TimeSeries
from prompt_toolkit.completion import NestedCompleter

from gamestonk_terminal.helper_funcs import b_is_stock_market_open, get_flair
from gamestonk_terminal.main_helper import (
    clear,
    load,
    view,
    candle,
    print_goodbye,
    quote,
    update_terminal,
    about_us,
    bootup,
    reset,
)
from gamestonk_terminal.menu import session
from gamestonk_terminal import config_terminal as cfg
from gamestonk_terminal import feature_flags as gtff
from gamestonk_terminal.discovery import disc_controller
from gamestonk_terminal.due_diligence import dd_controller
from gamestonk_terminal.fundamental_analysis import fa_controller
from gamestonk_terminal.papermill import papermill_controller as mill
from gamestonk_terminal.behavioural_analysis import ba_controller
from gamestonk_terminal.technical_analysis import ta_controller
from gamestonk_terminal.comparison_analysis import ca_controller
from gamestonk_terminal.exploratory_data_analysis import eda_controller
from gamestonk_terminal.options import op_controller
from gamestonk_terminal.economy import econ_controller
from gamestonk_terminal.residuals_analysis import ra_controller
from gamestonk_terminal.portfolio_analysis import pa_controller
from gamestonk_terminal.brokers import bro_controller
from gamestonk_terminal.cryptocurrency import crypto_controller
from gamestonk_terminal.screener import screener_controller
from gamestonk_terminal.portfolio_optimization import po_controller
from gamestonk_terminal.forex import fx_controller
from gamestonk_terminal.backtesting import bt_controller
from gamestonk_terminal.resource_collection import rc_controller
from gamestonk_terminal.research import res_controller
from gamestonk_terminal.government import gov_controller
from gamestonk_terminal.etf import etf_controller
from gamestonk_terminal.insider import insider_controller


# pylint: disable=too-many-public-methods
class TerminalController:
    """Terminal Controller class"""

    # To hold suffix for Yahoo Finance
    suffix = ""

    # Command choices
    CHOICES_TICKER_DEPENDENT = [
        "ba",
        "res",
        "fa",
        "ta",
        "bt",
        "dd",
        "eda",
        "pred",
        "ca",
        "ra",
    ]

    CHOICES = [
        "cls",
        "?",
        "help",
        "quit",
        "q",
        "reset",
        "update",
        "clear",
        "load",
        "quote",
        "candle",
        "view",
        "disc",
        "scr",
        "mill",
        "econ",
        "pa",
        "crypto",
        "po",
        "ins",
        "fx",
        "rc",
        "op",
        "gov",
        "etf",
        "about",
        "bro",
        "ins",
    ]
    CHOICES += CHOICES_TICKER_DEPENDENT

    def __init__(
        self,
        stock: pd.DataFrame,
        ticker: str,
        start: datetime,
        interval: str,
    ):
        """Constructor"""
        self.stock = stock
        self.ticker = ticker
        self.start = start
        self.interval = interval

        self.update_succcess = False
        self.t_parser = argparse.ArgumentParser(add_help=False, prog="terminal")
        self.t_parser.add_argument(
            "cmd",
            choices=self.CHOICES,
        )
        self.completer = NestedCompleter.from_nested_dict(
            {c: None for c in self.CHOICES}
        )

    def print_help(self):
        """Print help"""
        help_text = """
What do you want to do?
    cls         clear screen
    ?/help      show this menu again
    update      update terminal from remote
    reset       reset terminal and reload configs
    about       about us
    q(uit)      to abandon the program

Contexts:
>   mill        papermill menu, \t\t menu to generate notebook reports
>   econ        economic data, \t\t\t e.g.: events, FRED data, GDP, VIXCLS
>   pa          portfolio analysis, \t\t analyses your custom portfolio
>   bro         brokers holdings, \t\t supports: robinhood, alpaca, ally
>   crypto      cryptocurrencies, \t\t from: coingecko, coinmarketcap, binance
>   po          portfolio optimization, \t optimal portfolio weights from pyportfolioopt
>   gov         government menu, \t\t house trading, contracts, corporate lobbying
>   etf         etf menu, \t\t\t from: StockAnalysis.com
>   fx          forex menu, \t\t\t forex support through Oanda
>   rc          resource collection, \t\t e.g. hf letters, arXiv, EDGAR, FINRA
>   op          options info,            \t e.g.: volume, open interest, chains, volatility
>   ins         insider trading,         \t e.g.: latest penny stock buys, insider sales
            """

        s_intraday = (f"Intraday {self.interval}", "Daily")[self.interval == "1440min"]
        if self.ticker and self.start:
            help_text += f"\n{s_intraday} Stock: {self.ticker} (from {self.start.strftime('%Y-%m-%d')})\n"
        elif self.ticker:
            help_text += f"\n{s_intraday} Stock: {self.ticker}\n"
        else:
            help_text += "\nStock: ?\n"

        help_text += f"Market {('CLOSED', 'OPEN')[b_is_stock_market_open()]}.\n"

        help_text += """
    clear       clear a specific stock ticker from analysis
    load        load a specific stock ticker for analysis
    """

        if self.ticker:
            help_text += """quote       view the current price for a specific stock ticker
    candle      view a candle chart for a specific stock ticker
    view        view and load a specific stock ticker for technical analysis

>   dd          in-depth due-diligence,  \t e.g.: news, analyst, shorts, insider, sec
>   ba          behavioural analysis,    \t from: reddit, stocktwits, twitter, google
>   ta          technical analysis,      \t e.g.: ema, macd, rsi, adx, bbands, obv
>   fa          fundamental analysis,    \t e.g.: income, balance, cash, earnings
>   res         research web page,       \t e.g.: macroaxis, yahoo finance, fool
>   ca          comparison analysis,     \t e.g.: historical, correlation, financials
>   eda         exploratory data analysis,\t e.g.: decompose, cusum, residuals analysis
>   ra          residuals analysis,      \t e.g.: model fit, qqplot, hypothesis test
>   bt          strategy backtester,      \t e.g.: simple ema, ema cross, rsi strategies
>   pred        prediction techniques,   \t e.g.: regression, arima, rnn, lstm"""

        help_text += """\n>   disc        discover trending stocks, \t e.g. map, sectors, high short interest
>   scr         screener stocks, \t\t e.g. overview/performance, using preset filters
        """
        print(help_text)

    def switch(self, an_input: str):
        """Process and dispatch input

        Returns
        -------
        True, False or None
            False - quit the menu
            True - quit the program
            None - continue in the menu
        """

        # Empty command
        if not an_input:
            print("")
            return None

        if not self.ticker and an_input in self.CHOICES_TICKER_DEPENDENT:
            print("No ticker selected. Use 'load <ticker>'.\n")
            return None

        (known_args, other_args) = self.t_parser.parse_known_args(an_input.split())

        # Help menu again
        if known_args.cmd == "?":
            self.print_help()
            return None

        # Clear screen
        if known_args.cmd == "cls":
            os.system("cls||clear")
            return None

        return getattr(
            self, "call_" + known_args.cmd, lambda: "Command not recognized!"
        )(other_args)

    def call_help(self, _):
        """Process Help command"""
        self.print_help()

    def call_quit(self, _):
        """Process Quit command - quit the program"""
        return True

    def call_q(self, _):
        """Process Quit command - quit the program"""
        return True

    def call_reset(self, _):
        """Process reset command"""
        return True

    def call_clear(self, other_args: List[str]):
        """Process clear command"""
        self.ticker, self.start, self.interval, self.stock = clear(
            other_args, self.ticker, self.start, self.interval, self.stock
        )

    def call_load(self, other_args: List[str]):
        """Process load command"""
        self.ticker, self.start, self.interval, self.stock = load(
            other_args, self.ticker, self.start, self.interval, self.stock
        )
        if "." in self.ticker:
            self.ticker, self.suffix = self.ticker.split(".")
        else:
            self.suffix = ""

    def call_quote(self, other_args: List[str]):
        """Process quote command"""
        quote(
            other_args, self.ticker + "." + self.suffix if self.suffix else self.ticker
        )

    def call_candle(self, _):
        """Process candle command"""
        candle(
            self.ticker + "." + self.suffix if self.suffix else self.ticker,
            (datetime.now() - timedelta(days=180)).strftime("%Y-%m-%d"),
        )

    def call_view(self, other_args: List[str]):
        """Process view command"""
        view(other_args, self.ticker, self.interval, self.stock)

    def call_disc(self, _):
        """Process disc command"""
        return disc_controller.menu()

    def call_mill(self, _):
        """Process mill command"""
        return mill.papermill_menu()

    def call_fx(self, _):
        """Process fx command"""
        return fx_controller.menu()

    def call_econ(self, _):
        """Process econ command"""
        return econ_controller.menu()

    def call_pa(self, _):
        """Process pa command"""
        return pa_controller.menu()

    def call_bro(self, _):
        """Process bro command"""
        return bro_controller.menu()

    def call_crypto(self, _):
        """Process crypto command"""
        return crypto_controller.menu()

    def call_scr(self, _):
        """Process scr command"""
        return screener_controller.menu()

    def call_rc(self, _):
        """Process rc command"""
        return rc_controller.menu()

    def call_etf(self, _):
        """Process etf command"""
        return etf_controller.menu()

    def call_ins(self, _):
        """Process ins command"""
        return insider_controller.menu()

    def call_gov(self, _):
        """Process gov command"""
        return gov_controller.menu(self.ticker)

    def call_po(self, _):
        """Process po command"""
        return po_controller.menu([self.ticker])

    def call_update(self, _):
        """Process update command"""
        self.update_succcess = not update_terminal()
        return True

    def call_about(self, _):
        """Process about command"""
        about_us()

    def call_ba(self, _):
        """Process ba command"""
        return ba_controller.menu(
            self.ticker,
            self.start,
        )

    def call_res(self, _):
        """Process res command"""
        return res_controller.menu(
            self.ticker,
            self.start,
            self.interval,
        )

    def call_ca(self, _):
        """Process ca command"""
        return ca_controller.menu(self.ticker, self.start, self.interval, self.stock)

    def call_fa(self, _):
        """Process fa command"""
        return fa_controller.menu(
            self.ticker,
            self.start,
            self.interval,
        )

    def call_ta(self, _):
        """Process ta command"""
        return ta_controller.menu(
            self.ticker,
            self.start,
            self.interval,
            self.stock,
        )

    def call_dd(self, _):
        """Process dd command"""
        return dd_controller.menu(
            self.ticker,
            self.start,
            self.interval,
            self.stock,
        )

    def call_ra(self, _):
        """Process ra command"""
        return ra_controller.menu(
            self.ticker,
            self.start,
            self.interval,
            self.stock,
        )

    def call_bt(self, _):
        """Process bt command"""
        return bt_controller.menu(
            self.ticker,
            self.start,
        )

    def call_eda(self, _):
        """Process eda command"""
        if self.interval == "1440min":
            return eda_controller.menu(
                self.ticker,
                self.start,
                self.interval,
                self.stock,
            )

        df_stock = yf.download(self.ticker, start=self.start, progress=False)
        df_stock.index.name = "date"
        s_interval = "1440min"

        return eda_controller.menu(
            self.ticker,
            self.start,
            s_interval,
            df_stock,
        )

    def call_op(self, _):
        """Process op command"""
        if self.interval == "1440min":
            return op_controller.menu(
                self.ticker,
                self.stock,
            )

        df_stock = yf.download(self.ticker, start=self.start, progress=False)

        return op_controller.menu(
            self.ticker,
            df_stock,
        )

    def call_pred(self, _):
        """Process pred command"""
        if not gtff.ENABLE_PREDICT:
            print(
                "Predict is disabled. Check ENABLE_PREDICT flag on feature_flags.py",
                "\n",
            )
            return None

        try:
            # pylint: disable=import-outside-toplevel
            from gamestonk_terminal.prediction_techniques import pred_controller
        except ModuleNotFoundError as e:
            print("One of the optional packages seems to be missing: ", e, "\n")
            return None
        except Exception as e:
            print(e, "\n")
            return None

        if self.interval == "1440min":
            return pred_controller.menu(
                self.ticker,
                self.start,
                self.interval,
                self.stock,
            )

        # If stock data is intradaily, we need to get data again as prediction
        # techniques work on daily adjusted data. By default we load data from
        # Alpha Vantage because the historical data loaded gives a larger
        # dataset than the one provided by quandl
        try:
            ts = TimeSeries(key=cfg.API_KEY_ALPHAVANTAGE, output_format="pandas")
            # pylint: disable=unbalanced-tuple-unpacking
            df_stock_pred, _ = ts.get_daily_adjusted(
                symbol=self.ticker, outputsize="full"
            )

            # pylint: disable=no-member
            df_stock_pred = df_stock_pred.sort_index(ascending=True)
            df_stock_pred = df_stock_pred[self.start :]
            return pred_controller.menu(
                self.ticker,
                self.start,
                "1440min",
                df_stock_pred,
            )
        except Exception as e:
            print(e)
            print("Either the ticker or the API_KEY are invalids. Try again!")
            return None


def terminal():
    """Terminal Menu"""

    bootup()

    ticker = ""  # "GME"
    start = ""  # "2021-01-01"
    stock = pd.DataFrame()  # yf.download(ticker, start, progress=False)
    interval = "1440min"

    t_controller = TerminalController(stock, ticker, start, interval)
    t_controller.print_help()

    parsed_stdin = False

    while True:

        if gtff.ENABLE_QUICK_EXIT:
            print("Quick exit enabled")
            break

        # Get input command from stdin or user
        if not parsed_stdin and len(sys.argv) > 1:
            an_input = " ".join(sys.argv[1:])
            print(f"{get_flair()}> {an_input}")
            parsed_stdin = True

        elif session and gtff.USE_PROMPT_TOOLKIT:
            an_input = session.prompt(
                f"{get_flair()}> ", completer=t_controller.completer
            )

        else:
            an_input = input(f"{get_flair()}> ")

        # Is command empty
        if not an_input:
            print("")
            continue

        # Process list of commands selected by user
        try:
            process_input = t_controller.switch(an_input)
            # None - Keep loop
            # True - Quit or Reset based on flag
            # False - Keep loop and show help menu

            if process_input is not None:
                # Quit terminal
                if process_input:
                    break

                t_controller.print_help()

        except SystemExit:
            print("The command selected doesn't exist\n")
            continue

    if not gtff.ENABLE_QUICK_EXIT:
        # Check if the user wants to reset application
        if an_input == "reset" or t_controller.update_succcess:
            ret_code = reset()
            if ret_code != 0:
                print_goodbye()
        else:
            print_goodbye()


if __name__ == "__main__":
    terminal()