# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

from pathlib import Path
import configparser
from configparser import ConfigParser
import shutil
import logging

from project import ProjectData
from .commands import run_qmlimportscanner

# Some QML plugins like QtCore are excluded from this list as they don't contribute much to
# executable size. Excluding them saves the extra processing of checking for them in files
EXCLUDED_QML_PLUGINS = {"QtQuick", "QtQuick3D", "QtCharts", "QtWebEngine", "QtTest", "QtSensors"}


class BaseConfig:

    def __init__(self, config_file: Path, dry_run: bool, comment_prefixes: str = "/") -> None:
        self.config_file = config_file
        self.parser = ConfigParser(comment_prefixes=comment_prefixes, allow_no_value=True)
        if not self.config_file.exists():
            if not dry_run:
                logging.info(f"[DEPLOY] Creating config file {self.config_file}")
                shutil.copy(Path(__file__).parent / "default.spec", self.config_file)
            else:
                self.config_file = Path(__file__).parent / "default.spec"
        else:
            logging.info(f"Using existing config file {config_file}")
        self.parser.read(self.config_file)

    def update_config(self):
        logging.info(f"[DEPLOY] Creating {self.config_file}")
        with open(self.config_file, "w+") as config_file:
            self.parser.write(config_file, space_around_delimiters=True)

    def set_value(self, section: str, key: str, new_value: str):
        try:
            current_value = self.get_value(section, key, ignore_fail=True)
            if current_value != new_value:
                self.parser.set(section, key, new_value)
        except configparser.NoOptionError:
            logging.warning(f"[DEPLOY] Key {key} does not exist")
        except configparser.NoSectionError:
            logging.warning(f"[DEPLOY] Section {section} does not exist")

    def get_value(self, section: str, key: str, ignore_fail: bool = False):
        try:
            return self.parser.get(section, key)
        except configparser.NoOptionError:
            if not ignore_fail:
                logging.warning(f"[DEPLOY] Key {key} does not exist")
        except configparser.NoSectionError:
            if not ignore_fail:
                logging.warning(f"[DEPLOY] Section {section} does not exist")


class Config(BaseConfig):
    """
    Wrapper class around pysidedeploy.spec file, whose options are used to control the executable
    creation
    """

    def __init__(self, config_file: Path, source_file: Path, python_exe: Path, dry_run: bool,
                 android_data, is_android: bool):
        super().__init__(config_file, dry_run)

        self._dry_run = dry_run
        # set source_file
        self.source_file = Path(
            self.set_or_fetch(config_property_val=source_file, config_property_key="input_file")
        )

        # set python path
        self.python_path = Path(
            self.set_or_fetch(
                config_property_val=python_exe,
                config_property_key="python_path",
                config_property_group="python",
            )
        )

        self.title = self.get_value("app", "title")

        self.project_dir = None
        if self.get_value("app", "project_dir"):
            self.project_dir = Path(self.get_value("app", "project_dir")).absolute()
        else:
            self._find_and_set_project_dir()

        self.exe_dir = None
        if self.get_value("app", "exec_directory"):
            self.exe_dir = Path(self.get_value("app", "exec_directory")).absolute()
        else:
            self._find_and_set_exe_dir()

        self.project_data: ProjectData = None
        if self.get_value("app", "project_file"):
            project_file = Path(self.get_value("app", "project_file")).absolute()
            self.project_data = ProjectData(project_file=project_file)
        else:
            self._find_and_set_project_file()

        self.qml_files = []
        config_qml_files = self.get_value("qt", "qml_files")
        if config_qml_files and self.project_dir:
            self.qml_files = [Path(self.project_dir) / file for file in config_qml_files.split(",")]
        else:
            self._find_and_set_qml_files()

        self.excluded_qml_plugins = []
        if self.get_value("qt", "excluded_qml_plugins"):
            self.excluded_qml_plugins = self.get_value("qt", "excluded_qml_plugins").split(",")
        else:
            self._find_and_set_excluded_qml_plugins()

        # Android
        if is_android:
            if android_data.wheel_pyside:
                self.wheel_pyside = android_data.wheel_pyside
            else:
                wheel_pyside_temp = self.get_value("qt", "wheel_pyside")
                self.wheel_pyside = Path(wheel_pyside_temp) if wheel_pyside_temp else None

            if android_data.wheel_shiboken:
                self.wheel_shiboken = android_data.wheel_shiboken
            else:
                wheel_shiboken_temp = self.get_value("qt", "wheel_shiboken")
                self.wheel_shiboken = Path(wheel_shiboken_temp) if wheel_shiboken_temp else None

            if android_data.ndk_path:
                self.ndk_path = android_data.ndk_path
            else:
                ndk_path_temp = self.get_value("buildozer", "ndk_path")
                self.ndk_path = Path(ndk_path_temp) if ndk_path_temp else None

            if android_data.sdk_path:
                self.sdk_path = android_data.sdk_path
            else:
                sdk_path_temp = self.get_value("buildozer", "sdk_path")
                self.sdk_path = Path(sdk_path_temp) if sdk_path_temp else None

            recipe_dir_temp = self.get_value("buildozer", "recipe_dir")
            self.recipe_dir = Path(recipe_dir_temp) if recipe_dir_temp else None

            jars_dir_temp = self.get_value("buildozer", "jars_dir")
            self.jars_dir = Path(jars_dir_temp) if jars_dir_temp else None

            self._modules = []
            if self.get_value("buildozer", "modules"):
                self.modules = self.get_value("buildozer", "modules").split(",")

            self.arch = self.get_value("buildozer", "arch")

            self._local_libs = []
            if self.get_value("buildozer", "local_libs"):
                self.local_libs = self.get_value("buildozer", "local_libs").split(",")

            self._mode = self.get_value("buildozer", "mode")

    def set_or_fetch(self, config_property_val, config_property_key, config_property_group="app"):
        """
        Write to config_file if 'config_property_key' is known without config_file
        Fetch and return from config_file if 'config_property_key' is unknown, but
        config_file exists
        Otherwise, raise an exception
        """
        if config_property_val:
            self.set_value(config_property_group, config_property_key, str(config_property_val))
            return config_property_val
        elif self.get_value(config_property_group, config_property_key):
            return self.get_value(config_property_group, config_property_key)
        else:
            raise RuntimeError(
                f"[DEPLOY] No {config_property_key} specified in config file or as cli option"
            )

    @property
    def dry_run(self):
        return self._dry_run

    @property
    def qml_files(self):
        return self._qml_files

    @qml_files.setter
    def qml_files(self, qml_files):
        self._qml_files = qml_files

    @property
    def project_dir(self):
        return self._project_dir

    @project_dir.setter
    def project_dir(self, project_dir):
        self._project_dir = project_dir

    @property
    def title(self):
        return self._title

    @title.setter
    def title(self, title):
        self._title = title
        self.set_value("app", "title", title)

    @property
    def source_file(self):
        return self._source_file

    @source_file.setter
    def source_file(self, source_file: Path):
        self._source_file = source_file

    @property
    def python_path(self):
        return self._python_path

    @python_path.setter
    def python_path(self, python_path: Path):
        self._python_path = python_path

    @property
    def excluded_qml_plugins(self):
        return self._excluded_qml_plugins

    @excluded_qml_plugins.setter
    def excluded_qml_plugins(self, excluded_qml_plugins):
        self._excluded_qml_plugins = excluded_qml_plugins

    @property
    def recipe_dir(self):
        return self._recipe_dir

    @recipe_dir.setter
    def recipe_dir(self, recipe_dir: Path):
        self._recipe_dir = recipe_dir.resolve() if recipe_dir else None
        if self._recipe_dir:
            self.set_value("buildozer", "recipe_dir", str(self._recipe_dir))

    def recipes_exist(self):
        if not self._recipe_dir:
            return False

        pyside_recipe_dir = Path(self.recipe_dir) / "PySide6"
        shiboken_recipe_dir = Path(self.recipe_dir) / "shiboken6"

        return pyside_recipe_dir.is_dir() and shiboken_recipe_dir.is_dir()

    @property
    def jars_dir(self) -> Path:
        return self._jars_dir

    @jars_dir.setter
    def jars_dir(self, jars_dir: Path):
        self._jars_dir = jars_dir.resolve() if jars_dir else None
        if self._jars_dir:
            self.set_value("buildozer", "jars_dir", str(self._jars_dir))

    @property
    def modules(self):
        return self._modules

    @modules.setter
    def modules(self, modules):
        self._modules = modules
        self.set_value("buildozer", "modules", ",".join(modules))

    @property
    def local_libs(self):
        return self._local_libs

    @local_libs.setter
    def local_libs(self, local_libs):
        self._local_libs = local_libs
        self.set_value("buildozer", "local_libs", ",".join(local_libs))

    @property
    def ndk_path(self):
        return self._ndk_path

    @ndk_path.setter
    def ndk_path(self, ndk_path: Path):
        self._ndk_path = ndk_path.resolve() if ndk_path else None
        if self._ndk_path:
            self.set_value("buildozer", "ndk_path", str(self._ndk_path))

    @property
    def sdk_path(self) -> Path:
        return self._sdk_path

    @sdk_path.setter
    def sdk_path(self, sdk_path: Path):
        self._sdk_path = sdk_path.resolve() if sdk_path else None
        if self._sdk_path:
            self.set_value("buildozer", "sdk_path", str(self._sdk_path))

    @property
    def arch(self):
        return self._arch

    @arch.setter
    def arch(self, arch):
        self._arch = arch
        self.set_value("buildozer", "arch", arch)

    @property
    def mode(self):
        return self._mode

    @property
    def exe_dir(self):
        return self._exe_dir

    @exe_dir.setter
    def exe_dir(self, exe_dir: Path):
        self._exe_dir = exe_dir

    @property
    def wheel_pyside(self) -> Path:
        return self._wheel_pyside

    @wheel_pyside.setter
    def wheel_pyside(self, wheel_pyside: Path):
        self._wheel_pyside = wheel_pyside.resolve() if wheel_pyside else None
        if self._wheel_pyside:
            self.set_value("qt", "wheel_pyside", str(self._wheel_pyside))

    @property
    def wheel_shiboken(self) -> Path:
        return self._wheel_shiboken

    @wheel_shiboken.setter
    def wheel_shiboken(self, wheel_shiboken: Path):
        self._wheel_shiboken = wheel_shiboken.resolve() if wheel_shiboken else None
        if self._wheel_shiboken:
            self.set_value("qt", "wheel_shiboken", str(self._wheel_shiboken))

    def _find_and_set_qml_files(self):
        """Fetches all the qml_files in the folder and sets them if the
        field qml_files is empty in the config_dir"""

        if self.project_data:
            qml_files = self.project_data.qml_files
            for sub_project_file in self.project_data.sub_projects_files:
                qml_files.extend(ProjectData(project_file=sub_project_file).qml_files)
            self.qml_files = qml_files
        else:
            qml_files_temp = None
            source_file = (
                Path(self.get_value("app", "input_file"))
                if self.get_value("app", "input_file")
                else None
            )
            python_exe = (
                Path(self.get_value("python", "python_path"))
                if self.get_value("python", "python_path")
                else None
            )
            if source_file and python_exe:
                if not self.qml_files:
                    qml_files_temp = list(source_file.parent.glob("**/*.qml"))

                # add all QML files, excluding the ones shipped with installed PySide6
                # The QML files shipped with PySide6 gets added if venv is used,
                # because of recursive glob
                if python_exe.parent.parent == source_file.parent:
                    # python venv path is inside the main source dir
                    qml_files_temp = list(
                        set(qml_files_temp) - set(python_exe.parent.parent.rglob("*.qml"))
                    )

                if len(qml_files_temp) > 500:
                    if "site-packages" in str(qml_files_temp[-1]):
                        logging.warning(
                            "You seem to include a lot of QML files from a local virtual env."
                            "This can lead to errors in deployment."
                        )
                    else:
                        logging.warning(
                            "You seem to include a lot of QML files. This can lead to errors in "
                            "deployment."
                        )

                if qml_files_temp:
                    extra_qml_files = [Path(file) for file in qml_files_temp]
                    self.qml_files.extend(extra_qml_files)
        if self.qml_files:
            self.set_value(
                "qt",
                "qml_files",
                ",".join([str(file.absolute().relative_to(self.project_dir))
                          for file in self.qml_files]),
            )
            logging.info("[DEPLOY] QML files identified and set in config_file")

    def _find_and_set_project_dir(self):
        # there is no other way to find the project_dir than assume it is the parent directory
        # of source_file
        self.project_dir = self.source_file.parent

        # update input_file path
        logging.info("[DEPLOY] Update input_file path")
        self.set_value("app", "input_file", str(self.source_file.relative_to(self.project_dir)))

        logging.info("[DEPLOY] Update project_dir path")
        if self.project_dir != Path.cwd():
            self.set_value("app", "project_dir", str(self.project_dir))
        else:
            self.set_value("app", "project_dir", str(self.project_dir.relative_to(Path.cwd())))

    def _find_and_set_project_file(self):
        logging.info("[DEPLOY] Searching for .pyproject file")

        if self.project_dir:
            files = list(self.project_dir.glob("*.pyproject"))
        else:
            logging.exception("[DEPLOY] Project directory not set in config file")
            raise

        if not files:
            logging.info("[DEPLOY] No .pyproject file found. Project file not set")
        elif len(files) > 1:
            logging.warning("DEPLOY: More that one .pyproject files found. Project file not set")
            raise
        else:
            self.project_data = ProjectData(files[0])
            self.set_value("app", "project_file", str(files[0].relative_to(self.project_dir)))
            logging.info(f"[DEPLOY] Project file {files[0]} found and set in config file")

    def _find_and_set_excluded_qml_plugins(self):
        if self.qml_files:
            included_qml_modules = set(run_qmlimportscanner(qml_files=self.qml_files,
                                                            dry_run=self.dry_run))
            self.excluded_qml_plugins = EXCLUDED_QML_PLUGINS.difference(included_qml_modules)

            # needed for dry_run testing
            self.excluded_qml_plugins = sorted(self.excluded_qml_plugins)

            if self.excluded_qml_plugins:
                self.set_value("qt", "excluded_qml_plugins", ",".join(self.excluded_qml_plugins))

    def _find_and_set_exe_dir(self):
        if self.project_dir == Path.cwd():
            self.exe_dir = self.project_dir.relative_to(Path.cwd())
        else:
            self.exe_dir = self.project_dir
        self.exe_dir = Path(
            self.set_or_fetch(
                config_property_val=self.exe_dir, config_property_key="exec_directory"
            )
        ).absolute()
