# Copyright (c) 2018 Ultimaker B.V.
# Cura is released under the terms of the LGPLv3 or higher.
import glob
import os

from pathlib import Path
from typing import Any, cast, Dict, List, Set, Tuple, TYPE_CHECKING, Optional

from UM.Logger import Logger
from UM.PluginRegistry import PluginRegistry
from cura.CuraApplication import CuraApplication  # To find some resource types.
from cura.Settings.GlobalStack import GlobalStack

from UM.PackageManager import PackageManager  # The class we're extending.
from UM.Resources import Resources  # To find storage paths for some resource types.
from UM.i18n import i18nCatalog
from urllib.parse import unquote_plus

catalog = i18nCatalog("cura")

if TYPE_CHECKING:
    from UM.Qt.QtApplication import QtApplication
    from PyQt6.QtCore import QObject


class CuraPackageManager(PackageManager):
    def __init__(self, application: "QtApplication", parent: Optional["QObject"] = None) -> None:
        super().__init__(application, parent)
        self._local_packages: Optional[List[Dict[str, Any]]] = None
        self._local_packages_ids: Optional[Set[str]] = None
        self.installedPackagesChanged.connect(self._updateLocalPackages)

    def _updateLocalPackages(self) -> None:
        self._local_packages = self.getAllLocalPackages()
        self._local_packages_ids = set(pkg["package_id"] for pkg in self._local_packages)

    @property
    def local_packages(self) -> List[Dict[str, Any]]:
        """locally installed packages, lazy execution"""
        if self._local_packages is None:
            self._updateLocalPackages()
            # _updateLocalPackages always results in a list of packages, not None.
            # It's guaranteed to be a list now.
        return cast(List[Dict[str, Any]], self._local_packages)

    @property
    def local_packages_ids(self) -> Set[str]:
        """locally installed packages, lazy execution"""
        if self._local_packages_ids is None:
            self._updateLocalPackages()
            # _updateLocalPackages always results in a list of packages, not None.
            # It's guaranteed to be a list now.
        return cast(Set[str], self._local_packages_ids)

    def initialize(self) -> None:
        self._installation_dirs_dict["materials"] = Resources.getStoragePath(CuraApplication.ResourceTypes.MaterialInstanceContainer)
        self._installation_dirs_dict["qualities"] = Resources.getStoragePath(CuraApplication.ResourceTypes.QualityInstanceContainer)
        self._installation_dirs_dict["variants"] = Resources.getStoragePath(CuraApplication.ResourceTypes.VariantInstanceContainer)

        # Due to a bug in Cura 5.1.0 we needed to change the directory structure of the curapackage on the server side (See SD-3871).
        # Although the material intent profiles will be installed in the `intent` folder, the curapackage from the server side will
        # have an `intents` folder. For completeness, we will look in both locations of in the curapackage and map them both to the
        # `intent` folder.
        self._installation_dirs_dict["intents"] = Resources.getStoragePath(CuraApplication.ResourceTypes.IntentInstanceContainer)
        self._installation_dirs_dict["intent"] = Resources.getStoragePath(CuraApplication.ResourceTypes.IntentInstanceContainer)

        super().initialize()

    def isMaterialBundled(self, file_name: str, guid: str):
        """ Check if there is a bundled material name with file_name and guid """
        for path in Resources.getSecureSearchPaths():
            # Secure search paths are install directory paths, if a material is in here it must be bundled.

            paths = [Path(p) for p in glob.glob(path + '/**/*.xml.fdm_material', recursive=True)]
            for material in paths:
                if material.name == file_name:
                    Logger.info(f"Found bundled material: {material.name}. Located in path: {str(material)}")
                    with open(material, encoding="utf-8") as f:
                        # Make sure the file we found has the same guid as our material
                        # Parsing this xml would be better but the namespace is needed to search it.
                        parsed_guid = PluginRegistry.getInstance().getPluginObject(
                            "XmlMaterialProfile").getMetadataFromSerialized(
                            f.read(), "GUID")
                        if guid == parsed_guid:
                            # The material we found matches both filename and GUID
                            return True

        return False

    def getMaterialFilePackageId(self, file_name: str, guid: str) -> str:
        """Get the id of the installed material package that contains file_name"""
        file_name = unquote_plus(file_name)
        for material_package in [f for f in os.scandir(self._installation_dirs_dict["materials"]) if f.is_dir()]:
            package_id = material_package.name

            for root, _, file_names in os.walk(material_package.path):
                if file_name not in file_names:
                    # File with the name we are looking for is not in this directory
                    continue

                with open(os.path.join(root, file_name), encoding="utf-8") as f:
                    # Make sure the file we found has the same guid as our material
                    # Parsing this xml would be better but the namespace is needed to search it.
                    parsed_guid = PluginRegistry.getInstance().getPluginObject("XmlMaterialProfile").getMetadataFromSerialized(
                        f.read(), "GUID")

                    if guid == parsed_guid:
                        return package_id

        Logger.error("Could not find package_id for file: {} with GUID: {} ".format(file_name, guid))
        Logger.error(f"Bundled paths searched: {list(Resources.getSecureSearchPaths())}")
        return ""

    def getMachinesUsingPackage(self, package_id: str) -> Tuple[List[Tuple[GlobalStack, str, str]], List[Tuple[GlobalStack, str, str]]]:
        """Returns a list of where the package is used

        It loops through all the package contents and see if some of the ids are used.

        :param package_id: package id to search for
        :return: empty if it is never used, otherwise a list consisting of 3-tuples
        """

        ids = self.getPackageContainerIds(package_id)
        container_stacks = self._application.getContainerRegistry().findContainerStacks()
        global_stacks = [container_stack for container_stack in container_stacks if isinstance(container_stack, GlobalStack)]
        machine_with_materials = []
        machine_with_qualities = []
        for container_id in ids:
            for global_stack in global_stacks:
                for extruder_nr, extruder_stack in enumerate(global_stack.extruderList):
                    if container_id in (extruder_stack.material.getId(), extruder_stack.material.getMetaData().get("base_file")):
                        machine_with_materials.append((global_stack, str(extruder_nr), container_id))
                    if container_id == extruder_stack.quality.getId():
                        machine_with_qualities.append((global_stack, str(extruder_nr), container_id))

        return machine_with_materials, machine_with_qualities

    def getAllLocalPackages(self) -> List[Dict[str, Any]]:
        """ Returns an unordered list of all the package_info of installed, to be installed, or bundled packages"""
        packages: List[Dict[str, Any]] = []

        for packages_to_add in self.getAllInstalledPackagesInfo().values():
            packages.extend(packages_to_add)

        return packages