#!/usr/bin/python3

import pathlib
import argparse
import os
import random
import time
from rich.console import Console
from rich.markdown import Markdown
from rich.table import Table
from ccpq.lib_ccpq import Question, Database, Game

MSG = {
        True: [
            "Yes!",
            "Good one!",
            "Super!",
            "Excellent job!"
            ],
        False: [
            "Sorry, that's wrong",
            "No, that's not right",
            "Damn it! That's not the right answer",
            ]
        }

DIFFICULTY = {
        "easy": "010-160",
        "medium": "101-500",
        "hard": "102-500",
        }


class Tui(object):
    def __init__(self):
        self._console = Console()
        self._stats = []

    def ask_question(self, question):
        os.system("clear")
        md = Markdown("# {}".format(question.get_question()))
        self._console.print(md)
        md = ""
        for possibility in question.get_possibilities():
            md += "1. {}\n".format(possibility)
        md = Markdown(md)
        self._console.print(md)

    def prompt_for_answer(self):
        #md = Markdown("What's your answer?")
        #self._console.print(md)
        answer = self._parse_input()
        return answer

    def _parse_input(self):
        """
        TODO make it adapt to questions with multiple choices and fill the
        blank
        """
        answers = []
        results = input("\n What's your answer? (only numbers, separated by a SPACE) ")
        results = results.split()
        for result in results:
            if result.isdigit():
                answers.append(result)
            else:
                md = Markdown("**only digits please**")
                self._console.print(md)
        return answers

    def signal_player(self, player):
        os.system("clear")
        md = "# {}".format(player.name)
        md = Markdown(md)
        self._console.print(md)
        time.sleep(2)
        os.system("clear")

    def show_response(self, question):
        answers = question.get_right_answers()
        if len(answers) == 1:
            answer = answers[0]
            md = Markdown("### The right answer is: {}".format(answer))
        else:
            md = "### The right answers are:\n"
            for answer in answers:
                md += "* {}\n".format(answer)
            md = Markdown(md)
        self._console.print(md)

    def show_explanation(self, question):
        md = "--- \n {} \n \n ---".format(question.get_explication())
        md = Markdown(md)
        self._console.print(md)

    def show_success(self, success):
        md = "# {}".format(random.choice(MSG[success]))
        md = Markdown(md)
        self._console.print(md)

    def show_stats(self, stats):
        md = "{}, you have {} out of {} right!\n".format(stats[0], stats[1], stats[1] + stats[2])
        md = Markdown(md)
        self._console.print(md)
        md = "### press **enter** to get a new question, s for stats and **CTRL-C** to quit"
        md = Markdown(md)
        self._console.print(md)
        result = input()
        return result
        
    def show_game_stats(self, players):
        os.system("clear")
        table = Table("Player")
        table.add_column("Right")
        table.add_column("Wrong")
        table.add_column("Total")
        for player in players:
            name, right, wrong = player.get_stats()
            table.add_row(str(name), str(right), str(wrong), str(right + wrong))
        self._console.print(table)
        md = "### press **enter** to continue"
        md = Markdown(md)
        self._console.print(md)
        input()

    def goodbye(self):
        md = Markdown("# Goodbye!")
        self._console.print(md)


class Application(object):
    def __init__(self, filepath_csv, filepath_players, interface, number, level):
        self._db = Database(filepath_csv, level)
        self._number = number
        self._session = Game(filepath_players)
        self._interface = interface

    def start(self):
        pass


    def run(self):
        while self._number > 0:
            player = self._session.get_random_player()
            self._interface.signal_player(player)
            question = self._db.get_question()
            self._interface.ask_question(question)
            answer = self._interface.prompt_for_answer()
            stat = question.verify(answer)
            player.stats.update_stats(stat)
            self._interface.show_success(stat)
            self._interface.show_response(question)
            self._interface.show_explanation(question)
            result = self._interface.show_stats(player.get_stats())
            if result.startswith("s"):
                players = self._session.get_all_players()
                self._interface.show_game_stats(players)
            self._number -= 1
        self.quit()

    def quit(self):
        players = self._session.get_all_players()
        self._interface.show_game_stats(players)
        self._interface.goodbye()


if __name__ == "__main__":
    parser = argparse.ArgumentParser()
    parser.add_argument("-f", "--file", required=True, help="file to use as database", action="store")
    parser.add_argument("-p", "--players", required=True, help="list of players", action="store")
    parser.add_argument("-n", "--number", default=10, help="number of questions to ask", type=int, action="store")
    parser.add_argument("-d", "--difficulty", default="easy", help="easy, medium or hard", type=str, action="store")
    args = parser.parse_args()
    filepath_csv = pathlib.Path(args.file)
    filepath_players = pathlib.Path(args.players)
    if not filepath_csv.exists() or not filepath_players.exists():
        print("no such file!")
        exit(1)
    try:
        level = DIFFICULTY[args.difficulty]
    except Exception as e:
        print(e)
        level = DIFFICULTY["easy"]
    interface = Tui()
    app = Application(filepath_csv, filepath_players, interface, args.number, level)
    try:
        app.run()
    except KeyboardInterrupt:
        app.quit()