import os
from configparser import ConfigParser
from logging import getLogger
from typing import List, Union, Type

import qtawesome
import requests
from PyQt5.QtCore import (
    pyqtSignal,
    QObject,
    QRunnable,
    QSettings,
    QFile,
    QDir,
    Qt,
)
from PyQt5.QtGui import QPalette, QColor, QFontMetrics
from PyQt5.QtWidgets import qApp, QStyleFactory, QLabel
from PyQt5.sip import wrappertype
from legendary.core import LegendaryCore
from legendary.models.game import Game
from requests.exceptions import HTTPError

from rare.utils.paths import resources_path

logger = getLogger("Utils")
settings = QSettings("Rare", "Rare")

color_role_map = {
    0: "WindowText",
    1: "Button",
    2: "Light",
    3: "Midlight",
    4: "Dark",
    5: "Mid",
    6: "Text",
    7: "BrightText",
    8: "ButtonText",
    9: "Base",
    10: "Window",
    11: "Shadow",
    12: "Highlight",
    13: "HighlightedText",
    14: "Link",
    15: "LinkVisited",
    16: "AlternateBase",
    # 17: "NoRole",
    18: "ToolTipBase",
    19: "ToolTipText",
    20: "PlaceholderText",
    # 21: "NColorRoles",
}

color_group_map = {
    0: "Active",
    1: "Disabled",
    2: "Inactive",
}


def load_color_scheme(path: str) -> QPalette:
    palette = QPalette()
    scheme = QSettings(path, QSettings.IniFormat)
    try:
        scheme.beginGroup("ColorScheme")
        for g in color_group_map:
            scheme.beginGroup(color_group_map[g])
            group = QPalette.ColorGroup(g)
            for r in color_role_map:
                role = QPalette.ColorRole(r)
                color = scheme.value(color_role_map[r], None)
                if color is not None:
                    palette.setColor(group, role, QColor(color))
                else:
                    palette.setColor(group, role, palette.color(QPalette.Active, role))
            scheme.endGroup()
        scheme.endGroup()
    except:
        palette = None
    return palette


def get_static_style() -> str:
    file = QFile(":/static_css/stylesheet.qss")
    file.open(QFile.ReadOnly)
    static = file.readAll().data().decode("utf-8")
    file.close()
    return static


def set_color_pallete(color_scheme: str) -> None:
    static = get_static_style()

    if not color_scheme:
        qApp.setStyle(QStyleFactory.create(qApp.property("rareDefaultQtStyle")))
        qApp.setPalette(qApp.style().standardPalette())
        qApp.setStyleSheet(static)
        return

    qApp.setStyle(QStyleFactory.create("Fusion"))
    custom_palette = load_color_scheme(f":/schemes/{color_scheme}")
    if custom_palette is not None:
        qApp.setPalette(custom_palette)
        qApp.setStyleSheet(static)
        icon_color = qApp.palette().color(QPalette.Foreground).name()
        qtawesome.set_defaults(color=icon_color)


def get_color_schemes() -> List[str]:
    colors = []
    for file in QDir(":/schemes"):
        colors.append(file)
    return colors


def set_style_sheet(style_sheet: str) -> None:
    static = get_static_style()

    if not style_sheet:
        qApp.setStyle(QStyleFactory.create(qApp.property("rareDefaultQtStyle")))
        qApp.setStyleSheet(static)
        return

    qApp.setStyle(QStyleFactory.create("Fusion"))
    file = QFile(f":/stylesheets/{style_sheet}/stylesheet.qss")
    file.open(QFile.ReadOnly)
    stylesheet = file.readAll().data().decode("utf-8")
    file.close()
    qApp.setStyleSheet(stylesheet + static)

    icon_color = qApp.palette().color(QPalette.Text).name()
    qtawesome.set_defaults(color="#eeeeee")


def get_style_sheets() -> List[str]:
    styles = []
    for file in QDir(":/stylesheets/"):
        styles.append(file)
    return styles


def get_translations():
    langs = ["en"]
    for i in os.listdir(os.path.join(resources_path, "languages")):
        if i.endswith(".qm") and not i.startswith("qt_"):
            langs.append(i.split(".")[0])
    return langs


def get_latest_version():
    try:
        resp = requests.get(
            "https://api.github.com/repos/Dummerle/Rare/releases/latest", timeout=2,
        )
        tag = resp.json()["tag_name"]
        return tag
    except requests.exceptions.ConnectionError:
        return "0.0.0"


def path_size(path: Union[str, os.PathLike]) -> int:
    return sum(
        os.stat(os.path.join(dp, f)).st_size
        for dp, dn, filenames in os.walk(path)
        for f in filenames
    )


def format_size(b: Union[int, float]) -> str:
    for s in ["", "Ki", "Mi", "Gi", "Ti", "Pi", "Ei"]:
        if b < 1024:
            return f"{b:.2f} {s}B"
        b /= 1024


# this is a copied function from legendary.utils.wine_helpers, but registry file can be specified
def read_registry(registry: str, wine_pfx: str) -> ConfigParser:
    accepted = ["system.reg", "user.reg"]
    if registry not in accepted:
        raise RuntimeError(f'Unknown target "{registry}" not in {accepted}')
    reg = ConfigParser(comment_prefixes=(';', '#', '/', 'WINE'), allow_no_value=True,
                       strict=False)
    reg.optionxform = str
    reg.read(os.path.join(wine_pfx, 'system.reg'))
    return reg


class CloudWorker(QRunnable):
    class Signals(QObject):
        # List[SaveGameFile]
        result_ready = pyqtSignal(list)

    def __init__(self, core: LegendaryCore):
        super(CloudWorker, self).__init__()
        self.core = core
        self.signals = CloudWorker.Signals()
        self.setAutoDelete(True)

    def run(self) -> None:
        try:
            result = self.core.get_save_games()
        except HTTPError:
            result = None
        self.signals.result_ready.emit(result)


def get_raw_save_path(game: Game):
    if game.supports_cloud_saves:
        return (
            game.metadata.get("customAttributes", {})
                .get("CloudSaveFolder", {})
                .get("value")
        )


def icon(icn_str: str, fallback: str = None, **kwargs):
    try:
        return qtawesome.icon(icn_str, **kwargs)
    except Exception as e:
        if not fallback:
            logger.warning(f"{e} {icn_str}")
    if fallback:
        try:
            return qtawesome.icon(fallback, **kwargs)
        except Exception as e:
            logger.error(str(e))
    if kwargs.get("color"):
        kwargs["color"] = "red"
    return qtawesome.icon("ei.error", **kwargs)


def widget_object_name(widget: Union[QObject,wrappertype,Type], suffix: str) -> str:
    suffix = f"_{suffix}" if suffix else ""
    if isinstance(widget, QObject):
        return f"{type(widget).__name__}{suffix}"
    elif isinstance(widget, wrappertype) or isinstance(widget, type):
        return f"{widget.__name__}{suffix}"
    else:
        raise RuntimeError(f"Argument {widget} not a QObject or type of QObject")


def elide_text(label: QLabel, text: str) -> str:
    metrics = QFontMetrics(label.font())
    return metrics.elidedText(text, Qt.ElideRight, label.sizeHint().width())