"""SaraSort: a GUI for configuring SaraSortd. It doesn't sort anything itself;
it reads and edits SaraSortd's configs and controls its systemd service."""

import flet as ft

from ConfigPage import ConfigPage
from Core import (
    AppName, ApplyAppearance, AssetsDir, BuildTheme, BundledFontFamily, EffectiveSettings, LoadConfig, Palette,
)
from FlowPage import FlowPage
from ServicePage import ServicePage
from SettingsPage import SettingsPage
from TemplatesPage import TemplatesPage
from ToolsPage import ToolsPage
from Widgets import App

Destinations = [
    ("Flow", ft.Icons.SCHEMA_OUTLINED, ft.Icons.SCHEMA),
    ("Service", ft.Icons.MONITOR_HEART_OUTLINED, ft.Icons.MONITOR_HEART),
    ("Configs", ft.Icons.TUNE_OUTLINED, ft.Icons.TUNE),
    ("Templates", ft.Icons.DASHBOARD_CUSTOMIZE_OUTLINED, ft.Icons.DASHBOARD_CUSTOMIZE),
    ("Tools", ft.Icons.BUILD_OUTLINED, ft.Icons.BUILD),
    ("Settings", ft.Icons.SETTINGS_OUTLINED, ft.Icons.SETTINGS),
]
Names = [Name for Name, _, _ in Destinations]


def Main(Page: ft.Page) -> None:
    Config = LoadConfig()
    Appearance = EffectiveSettings(Config)
    ApplyAppearance(Appearance)  # before anything reads Palette.X

    Page.title = AppName
    Page.theme_mode = ft.ThemeMode.DARK
    Page.theme = BuildTheme()
    Page.dark_theme = BuildTheme()
    Page.fonts = {BundledFontFamily: "fonts/Fixedsys_Excelsior_Regular.ttf"}
    Page.window.title_bar_hidden = Appearance.HideWindowTitleBar
    Page.padding = 0
    Page.bgcolor = Palette.Base
    Page.window.width = 1180
    Page.window.height = 780
    Page.window.min_width = 760
    Page.window.min_height = 520

    TheApp = App(Page, Config)
    Body = ft.Container(expand=True)
    Pages: dict[str, ft.Control] = {}
    State = {"Current": ""}

    def Navigate(Name: str, **Arguments) -> None:
        if Name not in Pages:
            return
        Previous = Pages.get(State["Current"])
        if isinstance(Previous, ServicePage):
            Previous.StopPolling()
        State["Current"] = Name
        Rail.selected_index = Names.index(Name)
        Body.content = Pages[Name]
        Page.update()
        Shown = Pages[Name]
        Shown.Refresh(**Arguments)
        if isinstance(Shown, ServicePage):
            Shown.StartPolling()

    TheApp.Navigate = Navigate
    Pages.update({
        "Flow": FlowPage(TheApp),
        "Service": ServicePage(TheApp),
        "Configs": ConfigPage(TheApp),
        "Templates": TemplatesPage(TheApp),
        "Tools": ToolsPage(TheApp),
        "Settings": SettingsPage(TheApp, OnSaved=lambda: None),
    })

    Rail = ft.NavigationRail(
        selected_index=0,
        label_type=ft.NavigationRailLabelType.ALL,
        bgcolor=Palette.Mantle,
        indicator_color=Palette.Surface0,
        min_width=88,
        destinations=[ft.NavigationRailDestination(icon=Icon, selected_icon=Selected, label=Name)
                      for Name, Icon, Selected in Destinations],
        on_change=lambda e: Navigate(Names[e.control.selected_index]),
    )

    async def CloseWindow(e) -> None:
        await Page.window.close()

    TitleRow = [ft.WindowDragArea(
        ft.Container(ft.Text(AppName, size=18, color=Palette.Mauve), padding=ft.Padding.only(left=16, top=6, bottom=6)),
        expand=True,
    )]
    if Appearance.HideWindowTitleBar:
        TitleRow += [
            ft.IconButton(ft.Icons.MINIMIZE, icon_size=16, tooltip="Minimize",
                          on_click=lambda e: (setattr(Page.window, "minimized", True), Page.update())),
            ft.IconButton(ft.Icons.CLOSE, icon_size=16, tooltip="Close", on_click=CloseWindow),
        ]

    Page.add(ft.Column([
        ft.Container(ft.Row(TitleRow, spacing=0), bgcolor=Palette.Mantle,
                     border=ft.Border.only(bottom=ft.BorderSide(1, Palette.Surface1))),
        ft.Row([Rail, ft.VerticalDivider(width=1, color=Palette.Surface1), Body], expand=True, spacing=0,
               vertical_alignment=ft.CrossAxisAlignment.STRETCH),
    ], expand=True, spacing=0))
    Navigate(Config.StartPage if Config.StartPage in Pages else "Flow")


if __name__ == "__main__":
    ft.run(Main, assets_dir=str(AssetsDir))