# pylint: disable=C0111,R0903
# -*- coding: utf-8 -*-

"""Shows a widget for each connected screen and allows the user to loop through different orientations.

Requires the following executable:
    * swaymsg
"""

import core.module
import core.input
import util.cli

import json
from os import environ, path

possible_orientations = ["normal", "90", "180", "270"]

class Module(core.module.Module):
    def __init__(self, config, theme):
        super().__init__(config, theme, [])

        self.service = "sway-auto-rotate@%s" % path.basename(environ['SWAYSOCK']).replace('-', '\\\\x2d')
#        self._widgets = []
        self.update_widgets()

    def update_widgets(self):
        for display in json.loads(util.cli.execute("/usr/bin/swaymsg -t get_outputs -r")):
            name = display['name']
            widget = self.widget(name)
            if not widget:
                widget = self.add_widget(name=name, full_text="若 "+name)
                widget.set("auto", util.cli.execute("systemctl --user show %s -p ActiveState" % self.service).split("\n")[0].split("=")[1])
                core.input.register(widget, button=core.input.LEFT_MOUSE, cmd=self._toggle)
                core.input.register(widget, button=core.input.RIGHT_MOUSE, cmd=self._toggle_auto)
            widget.set("orientation", display['transform'])

    def state(self, widget):
        curr = widget.get("auto", "inactive")
        if curr == "inactive":
            return ["warning"]
        return [curr]

    def _toggle_auto(self, event):
        widget = self.widget(widget_id=event["instance"])
        if widget.get("auto") == "inactive":
            util.cli.execute("systemctl --user start %s" % self.service)
        else:
            util.cli.execute("systemctl --user stop %s" % self.service)
        widget.set("auto", util.cli.execute("systemctl --user show %s -p ActiveState" % self.service).split("\n")[0].split("=")[1])

    def _toggle(self, event):
        widget = self.widget(widget_id=event["instance"])

        # compute new orientation based on current orientation
        idx = (possible_orientations.index(widget.get("orientation"))+ 1) % len(possible_orientations)
        new_orientation = possible_orientations[idx]

        widget.set("orientation", new_orientation)

        util.cli.execute("swaymsg 'output {} transform {}'".format(widget.name, new_orientation))

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