import encodings.aliases
from helpers import HButtonSelect, spawnDialog, spawnSimplePopup, errorTxt

from prompt_toolkit.application.current import get_app
from prompt_toolkit.layout import FormattedTextControl
from prompt_toolkit.layout.containers import HSplit, Window
from prompt_toolkit.layout.dimension import Dimension as D
from prompt_toolkit.widgets import Box, Button, Dialog, Label, RadioList, ValidationToolbar

class InterfaceSettings:

    def __init__(self,intset,guestLogin,restart,server,floats):
        self.intset = intset
        self.guestLogin = guestLogin
        self.server = server
        self.floats = floats
        self.el = HSplit([
            Window(FormattedTextControl(text=self.showISettings,focusable=False),dont_extend_height=True),
            Box(HButtonSelect([("Change color depth",self.changecolor),("Change text encoding",self.changeenc),("Apply changes",restart)]),padding=0),
            Label("\n\nYou will need to restart the interface or relog to apply any new changes."),
        ])

    def showISettings(self):
        color = ({1: "1 bit (Monochrome)",4: "4 bits (ANSI/RGBI)",8: "8 bits",24: "24 bits (True Color)"})[self.intset["color"]]
        encoding = self.intset["encoding"]
        if encoding=="utf8": encoding="UTF-8 (Unicode)"
        if encoding=="ascii": encoding="ASCII (7-bit)"
        if encoding=="cp437": encoding="CP437 (Extended ASCII)"
        if encoding=="latin_1": encoding="Latin-1/ISO-8859-1 (Ext. ASCII)"

        return [
            ("","Color depth: "),("bold",color),("","\n"),
            ("","Text encoding: "),("bold",encoding),("","\n")
        ]

    async def _updateisettings(self):
        if self.guestLogin: return
        res = await self.server.setisettings("basic",self.intset)
        if res["type"]=="error":
            if res["server"]:
                await spawnSimplePopup("Error",f"{errorTxt(res)}\nYour changes might not have been sent to the internal server. Please try again.",self.floats)
            else:
                await spawnSimplePopup("Error",errorTxt(res),self.floats)

    def changecolor(self):
        def dlgclose():
            despawn()
            self.intset["color"] = colorselect.current_value
            get_app().create_background_task(self._updateisettings())

        ok_button = Button(text="OK", handler=dlgclose, width=16)

        colorselect = RadioList([(24,"24 bits (True Color)"),(8,"8 bits (Paletted)"),(4,"4 bits (ANSI/RGBI)"),(1,"1 bit (Monochrome)")],default=self.intset["color"])

        dlg = Dialog(
            title="Change color depth",
            body=HSplit(
                [
                    Label(text="Please select a color depth supported by this terminal:", dont_extend_height=True),
                    colorselect,
                    Label(text="Use 1 or 4 bits for compatibility with older terminals, otherwise 8 or 24 bits.", dont_extend_height=True),
                    Label(text="The more bits in the color depth, the more colors there can be displayed on-screen."),
                    ValidationToolbar(),
                ],
                padding=D(preferred=1, max=1),
            ),
            buttons=[ok_button],
            with_background=True,
        )

        despawn = spawnDialog(dlg,self.floats)

    def changeencother(self):
        def dlgclose():
            despawn()
            self.intset["encoding"] = encselect.current_value
            get_app().create_background_task(self._updateisettings())

        ok_button = Button(text="OK", handler=dlgclose, width=16)

        encodingList = sorted(set(encodings.aliases.aliases.values()))
        for e in encodingList.copy():
            try:
                ("test").encode(e,errors="replace")
            except LookupError:
                encodingList.remove(e)
        encselect = RadioList([(e,e) for e in encodingList],default=self.intset["encoding"])

        dlg = Dialog(
            title="Change text encoding",
            body=HSplit(
                [
                    Label(text="Please select the encoding supported by this terminal:", dont_extend_height=True),
                    encselect,
                    Label(text="For more information about every supported encoding, open this webpage:\nhttps://docs.python.org/3.14/library/codecs.html#standard-encodings",dont_extend_height=True),
                    ValidationToolbar(),
                ],
                padding=D(preferred=1, max=1),
            ),
            buttons=[ok_button],
            with_background=True,
        )

        despawn = spawnDialog(dlg,self.floats)

    def changeenc(self):
        def dlgclose():
            despawn()
            v = encselect.current_value
            if v=="other":
                self.changeencother()
            else:
                self.intset["encoding"] = v
                get_app().create_background_task(self._updateisettings())

        ok_button = Button(text="OK", handler=dlgclose, width=16)

        default = self.intset["encoding"]
        if not default in ["utf8","ascii","latin_1","cp437"]:
            default = "other"

        encselect = RadioList([("utf8","UTF-8 (Unicode)"),("ascii","ASCII (7-bit)"),("latin_1","Latin-1/ISO-8859-1 (Ext. ASCII)"),("cp437","CP437 (Extended ASCII)"),("other","Other (Python-supported)")],default=default)

        dlg = Dialog(
            title="Change text encoding",
            body=HSplit(
                [
                    Label(text="Please select the encoding supported by this terminal:", dont_extend_height=True),
                    encselect,
                    Label(text="UTF-8 is generally reccomended for a normal modern terminal, and supports everything from Unicode.",dont_extend_height=True),
                    Label(text="ASCII is very barebones but is supported by every terminal. Please use it if all else fails.", dont_extend_height=True),
                    Label(text="You may see garbled text if you chose the wrong text encoding.",dont_extend_height=True),
                    ValidationToolbar(),
                ],
                padding=D(preferred=1, max=1),
            ),
            buttons=[ok_button],
            with_background=True,
        )

        despawn = spawnDialog(dlg,self.floats)