from tkinter import messagebox
import dcc.config
import dcc.doom_base
import sys
import wand.display
import wand.image


class SS(dcc.doom_base.WadMap):
    def get_parser(self, prog_name):
        parser = super().get_parser(prog_name)
        parser.add_argument("-g", "--gravity", default="center")
        parser.add_argument("-y", "--yolo", action="store_true")
        return parser

    def take_action(self, parsed_args):
        while not self._try_screenshot(parsed_args.gravity, parsed_args.yolo):
            pass

    def _try_screenshot(self, gravity, yolo):
        with wand.image.Image(
            width=dcc.config.THUMB_WIDTH,
            height=dcc.config.THUMB_HEIGHT,
            pseudo="x:"
        ) as img:
            img.reset_coords()
            if (
                img.size[0] < dcc.config.THUMB_WIDTH
                or img.size[1] < dcc.config.THUMB_HEIGHT
            ):
                if not messagebox.askretrycancel(
                    title="DCC", message="Image too small.  Try again?"
                ):
                    sys.exit("Gave up trying to select an image.")
                return False
            img.crop(
                width=dcc.config.THUMB_WIDTH,
                height=dcc.config.THUMB_HEIGHT,
                gravity=gravity
            )
            img.reset_coords()
            if not yolo:
                wand.display.display(img)
                accepted = messagebox.askyesnocancel(
                    title="DCC", message="Is this image acceptable?"
                )
                if accepted is None:
                    sys.exit("Gave up on image verification")
                if not accepted:
                    return False
            img.save(filename=self.base_thumb_path())
            return True