import RNS
import importlib
import time

import nomadnet
from nomadnet.ui.textui import *
from nomadnet import NomadNetworkApp

COLORMODE_MONO = 1
COLORMODE_16   = 16
COLORMODE_88   = 88
COLORMODE_256  = 256
COLORMODE_TRUE = 2**24
THEME_DARK     = 0x01
THEME_LIGHT    = 0x02

THEMES = {
    THEME_DARK: {
        "urwid_theme": [
            # Style name                    # 16-color style                        # Monochrome style          # 88, 256 and true-color style
            ("heading",                     "light gray,underline", "default",      "underline",                "g93,underline", "default"),
            ("menubar",                     "black", "light gray",                  "standout",                 "#111", "#bbb"),
            ("scrollbar",                   "light gray", "default",                "standout",                 "#444", "default"),
            ("shortcutbar",                 "black", "light gray",                  "standout",                 "#111", "#bbb"),
            ("body_text",                   "white", "default",                     "default",                  "#ddd", "default"),
            ("error_text",                  "dark red", "default",                  "default",                  "dark red", "default"),
            ("warning_text",                "yellow", "default",                    "default",                  "#ba4", "default"),
            ("inactive_text",               "dark gray", "default",                 "default",                  "dark gray", "default"),
            ("buttons",                     "light green,bold", "default",          "default",                  "#00a533", "default"),
            ("msg_editor",                  "black", "light cyan",                  "standout",                 "#111", "#0bb"),
            ("msg_header_ok",               "black", "light green",                 "standout",                 "#111", "#6b2"),
            ("msg_header_caution",          "black", "yellow",                      "standout",                 "#111", "#fd3"),
            ("msg_header_sent",             "black", "light gray",                  "standout",                 "#111", "#ddd"),
            ("msg_header_delivered",        "black", "light blue",                  "standout",                 "#111", "#28b"),
            ("msg_header_failed",           "black", "dark gray",                   "standout",                 "#000", "#777"),
            ("msg_warning_untrusted",       "black", "dark red",                    "standout",                 "#111", "dark red"),
            ("list_focus",                  "black", "light gray",                  "standout",                 "#111", "#aaa"),
            ("list_off_focus",              "black", "dark gray",                   "standout",                 "#111", "#777"),
            ("list_trusted",                "dark green", "default",                "default",                  "#6b2", "default"),
            ("list_focus_trusted",          "black", "light gray",                  "standout",                 "#150", "#aaa"),
            ("list_unknown",                "dark gray", "default",                 "default",                  "#bbb", "default"),
            ("list_normal",                 "dark gray", "default",                 "default",                  "#bbb", "default"),
            ("list_untrusted",              "dark red", "default",                  "default",                  "#a22", "default"),
            ("list_focus_untrusted",        "black", "light gray",                  "standout",                 "#810", "#aaa"),
            ("topic_list_normal",           "white", "default",                     "default",                  "#ddd", "default"),
            ("browser_controls",            "light gray", "default",                "default",                  "#bbb", "default"),
            ("progress_full",               "black", "light gray",                  "standout",                 "#111", "#bbb"),
            ("progress_empty",              "light gray", "default",                "default",                  "#ddd", "default"),
        ],        
    }
}

GLYPHSETS = {
    "plain": 1,
    "unicode": 2,
    "nerdfont": 3
}

GLYPHS = {
    # Glyph name        # Plain      # Unicode      # Nerd Font
    ("check",           "=",         "\u2713",      "\u2713"),
    ("cross",           "X",         "\u2715",      "\u2715"),
    ("unknown",         "?",         "?",           "?"),
    ("lock",            "E",         "\U0001f512",  "\uf023"),
    ("unlock",          "!",         "\U0001f513",  "\uf09c"),
    ("arrow_r",         "->",        "\u2192",      "\u2192"),
    ("arrow_l",         "<-",        "\u2190",      "\u2190"),
    ("arrow_u",         "/\\",       "\u2191",      "\u2191"),
    ("arrow_d",         "\\/",       "\u2193",      "\u2193"),
    ("warning",         "!",         "\u26a0",      "\uf12a"),
    ("info",            "i",         "\u2139",      "\ufb4d"),
    ("unread",          "N",         "\u2709",      "\uf003 "),
    ("divider1",        "-",         "\u2504",      "\u2504"),
    ("peer",            "P",         "\U0001F464",  "\uf415"),
    ("node",            "N",         "\U0001F5A5",  "\uf502"),
    ("page",            "",          "\U0001F5B9",  "\uf719 "),
    ("speed",           "",          "\U0001F5B9",  "\uf9c4"),
    ("decoration_menu", "",          "",            " \uf93a"),
}

class TextUI:

    def __init__(self):
        self.app = NomadNetworkApp.get_shared_instance()
        self.app.ui = self
        self.loop = None

        if importlib.util.find_spec("urwid") != None:
            import urwid
        else:
            RNS.log("The text-mode user interface requires Urwid to be installed on your system.", RNS.LOG_ERROR)
            RNS.log("You can install it with the command: pip3 install urwid", RNS.LOG_ERROR)
            nomadnet.panic()

        urwid.set_encoding("UTF-8")

        intro_timeout  = self.app.config["textui"]["intro_time"]
        colormode      = self.app.config["textui"]["colormode"]
        theme          = self.app.config["textui"]["theme"]
        mouse_enabled  = self.app.config["textui"]["mouse_enabled"]

        self.palette   = THEMES[theme]["urwid_theme"]

        if self.app.config["textui"]["glyphs"] == "plain":
            glyphset = "plain"
        elif self.app.config["textui"]["glyphs"] == "unicoode":
            glyphset = "unicode"
        elif self.app.config["textui"]["glyphs"] == "nerdfont":
            glyphset = "nerdfont"
        else:
            glyphset = "unicode"

        self.glyphs = {}
        for glyph in GLYPHS:
            self.glyphs[glyph[0]] = glyph[GLYPHSETS[glyphset]]

        self.screen = urwid.raw_display.Screen()
        self.screen.register_palette(self.palette)
        
        self.main_display = Main.MainDisplay(self, self.app)
        
        if intro_timeout > 0:
            self.intro_display = Extras.IntroDisplay(self.app)
            initial_widget = self.intro_display.widget
        else:
            initial_widget = self.main_display.widget

        self.loop = urwid.MainLoop(initial_widget, screen=self.screen, handle_mouse=mouse_enabled)

        if intro_timeout > 0:
            self.loop.set_alarm_in(intro_timeout, self.display_main)

        # TODO: Probably remove this at some point when better terminal
        # color capability detection has been implemented
        if colormode > 16:
            RNS.log("Starting Text UI in "+str(colormode)+" color mode. If no UI appears, try adjusting your color settings in "+str(self.app.configdir)+"/config", RNS.LOG_INFO, _override_destination = True)
        
        self.set_colormode(colormode)

        self.loop.run()

    def set_colormode(self, colormode):
        self.colormode = colormode
        self.screen.set_terminal_properties(colormode)
        self.screen.reset_default_terminal_palette()

    def display_main(self, loop, user_data):
        self.loop.widget = self.main_display.widget