import platform
from typing import Optional, Sequence, Tuple
from agame.action import Action
from agame.dialog import DialogOption
from .display import Display

if platform.system() in ("Linux", "Darwin", "Unix"):
    from .unix import *


class BasicDisplay(Display):
    """
    A basic display that should be supported on all platforms. It just outputs
    text with some color.
    """

    def line(self, line: str = ""):
        print(line)

    def input(self, prompt: Optional[str] = None) -> str:
        if prompt is None:
            prompt = "> "
        return input(prompt)

    def wait_for_ack(self, prompt: Optional[str] = "Press enter to continue..."):
        input(prompt or "")

    def dialog_options(self, options: Sequence[DialogOption]) -> DialogOption:
        valid_opts = range(1, len(options) + 1)

        def print_opts():
            for i, opt in enumerate(options):
                self.line(f"{i}. {opt.text}")

        print_opts()
        while True:
            got = self.input("? ")
            try:
                choice = int(got)
            except ValueError:
                print_opts()
                continue
            if choice in valid_opts:
                break
        index = choice - 1
        selection = options[index]
        return selection