"""A PyQT4 dialog to select from automated issue matches"""
#
# Copyright 2012-2014 ComicTagger Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import annotations

import logging
import os
from typing import Callable

from PyQt5 import QtCore, QtGui, QtWidgets, uic

from comicapi.comicarchive import MetaDataStyle
from comicapi.genericmetadata import GenericMetadata
from comictaggerlib.coverimagewidget import CoverImageWidget
from comictaggerlib.ctsettings import ct_ns
from comictaggerlib.resulttypes import IssueResult, MultipleMatch
from comictaggerlib.ui import ui_path
from comictaggerlib.ui.qtutils import reduce_widget_font_size
from comictalker.comictalker import ComicTalker

logger = logging.getLogger(__name__)


class AutoTagMatchWindow(QtWidgets.QDialog):
    def __init__(
        self,
        parent: QtWidgets.QWidget,
        match_set_list: list[MultipleMatch],
        style: int,
        fetch_func: Callable[[IssueResult], GenericMetadata],
        config: ct_ns,
        talker: ComicTalker,
    ) -> None:
        super().__init__(parent)

        uic.loadUi(ui_path / "matchselectionwindow.ui", self)

        self.config = config

        self.current_match_set: MultipleMatch = match_set_list[0]

        self.altCoverWidget = CoverImageWidget(
            self.altCoverContainer, CoverImageWidget.AltCoverMode, config.Runtime_Options_config.user_cache_dir, talker
        )
        gridlayout = QtWidgets.QGridLayout(self.altCoverContainer)
        gridlayout.addWidget(self.altCoverWidget)
        gridlayout.setContentsMargins(0, 0, 0, 0)

        self.archiveCoverWidget = CoverImageWidget(self.archiveCoverContainer, CoverImageWidget.ArchiveMode, None, None)
        gridlayout = QtWidgets.QGridLayout(self.archiveCoverContainer)
        gridlayout.addWidget(self.archiveCoverWidget)
        gridlayout.setContentsMargins(0, 0, 0, 0)

        reduce_widget_font_size(self.twList)
        reduce_widget_font_size(self.teDescription, 1)

        self.setWindowFlags(
            QtCore.Qt.WindowType(
                self.windowFlags()
                | QtCore.Qt.WindowType.WindowSystemMenuHint
                | QtCore.Qt.WindowType.WindowMaximizeButtonHint
            )
        )

        self.skipButton = QtWidgets.QPushButton("Skip to Next")
        self.buttonBox.addButton(self.skipButton, QtWidgets.QDialogButtonBox.ButtonRole.ActionRole)
        self.buttonBox.button(QtWidgets.QDialogButtonBox.StandardButton.Ok).setText("Accept and Write Tags")

        self.match_set_list = match_set_list
        self._style = style
        self.fetch_func = fetch_func

        self.current_match_set_idx = 0

        self.twList.currentItemChanged.connect(self.current_item_changed)
        self.twList.cellDoubleClicked.connect(self.cell_double_clicked)
        self.skipButton.clicked.connect(self.skip_to_next)

        self.update_data()

    def update_data(self) -> None:
        self.current_match_set = self.match_set_list[self.current_match_set_idx]

        if self.current_match_set_idx + 1 == len(self.match_set_list):
            self.buttonBox.button(QtWidgets.QDialogButtonBox.StandardButton.Cancel).setDisabled(True)
            self.skipButton.setText("Skip")

        self.set_cover_image()
        self.populate_table()
        self.twList.resizeColumnsToContents()
        self.twList.selectRow(0)

        path = self.current_match_set.ca.path
        self.setWindowTitle(
            "Select correct match or skip ({} of {}): {}".format(
                self.current_match_set_idx + 1,
                len(self.match_set_list),
                os.path.split(path)[1],
            )
        )

    def populate_table(self) -> None:
        if not self.current_match_set:
            return

        self.twList.setRowCount(0)

        self.twList.setSortingEnabled(False)

        for row, match in enumerate(self.current_match_set.matches):
            self.twList.insertRow(row)

            item_text = match["series"]
            item = QtWidgets.QTableWidgetItem(item_text)
            item.setData(QtCore.Qt.ItemDataRole.ToolTipRole, item_text)
            item.setData(QtCore.Qt.ItemDataRole.UserRole, (match,))
            item.setFlags(QtCore.Qt.ItemFlag.ItemIsSelectable | QtCore.Qt.ItemFlag.ItemIsEnabled)
            self.twList.setItem(row, 0, item)

            if match["publisher"] is not None:
                item_text = str(match["publisher"])
            else:
                item_text = "Unknown"
            item = QtWidgets.QTableWidgetItem(item_text)
            item.setData(QtCore.Qt.ItemDataRole.ToolTipRole, item_text)
            item.setFlags(QtCore.Qt.ItemFlag.ItemIsSelectable | QtCore.Qt.ItemFlag.ItemIsEnabled)
            self.twList.setItem(row, 1, item)

            month_str = ""
            year_str = "????"
            if match["month"] is not None:
                month_str = f"-{int(match['month']):02d}"
            if match["year"] is not None:
                year_str = str(match["year"])

            item_text = year_str + month_str
            item = QtWidgets.QTableWidgetItem(item_text)
            item.setData(QtCore.Qt.ItemDataRole.ToolTipRole, item_text)
            item.setFlags(QtCore.Qt.ItemFlag.ItemIsSelectable | QtCore.Qt.ItemFlag.ItemIsEnabled)
            self.twList.setItem(row, 2, item)

            item_text = match["issue_title"]
            if item_text is None:
                item_text = ""
            item = QtWidgets.QTableWidgetItem(item_text)
            item.setData(QtCore.Qt.ItemDataRole.ToolTipRole, item_text)
            item.setFlags(QtCore.Qt.ItemFlag.ItemIsSelectable | QtCore.Qt.ItemFlag.ItemIsEnabled)
            self.twList.setItem(row, 3, item)

        self.twList.resizeColumnsToContents()
        self.twList.setSortingEnabled(True)
        self.twList.sortItems(2, QtCore.Qt.SortOrder.AscendingOrder)
        self.twList.selectRow(0)
        self.twList.resizeColumnsToContents()
        self.twList.horizontalHeader().setStretchLastSection(True)

    def cell_double_clicked(self, r: int, c: int) -> None:
        self.accept()

    def current_item_changed(self, curr: QtCore.QModelIndex, prev: QtCore.QModelIndex) -> None:
        if curr is None:
            return None
        if prev is not None and prev.row() == curr.row():
            return None

        self.altCoverWidget.set_issue_details(
            self.current_match()["issue_id"],
            [self.current_match()["image_url"], *self.current_match()["alt_image_urls"]],
        )
        if self.current_match()["description"] is None:
            self.teDescription.setText("")
        else:
            self.teDescription.setText(self.current_match()["description"])

    def set_cover_image(self) -> None:
        ca = self.current_match_set.ca
        self.archiveCoverWidget.set_archive(ca)

    def current_match(self) -> IssueResult:
        row = self.twList.currentRow()
        match: IssueResult = self.twList.item(row, 0).data(QtCore.Qt.ItemDataRole.UserRole)[0]
        return match

    def accept(self) -> None:
        self.save_match()
        self.current_match_set_idx += 1

        if self.current_match_set_idx == len(self.match_set_list):
            # no more items
            QtWidgets.QDialog.accept(self)
        else:
            self.update_data()

    def skip_to_next(self) -> None:
        self.current_match_set_idx += 1

        if self.current_match_set_idx == len(self.match_set_list):
            # no more items
            QtWidgets.QDialog.reject(self)
        else:
            self.update_data()

    def reject(self) -> None:
        reply = QtWidgets.QMessageBox.question(
            self,
            "Cancel Matching",
            "Are you sure you wish to cancel the matching process?",
            QtWidgets.QMessageBox.StandardButton.Yes,
            QtWidgets.QMessageBox.StandardButton.No,
        )

        if reply == QtWidgets.QMessageBox.StandardButton.No:
            return

        QtWidgets.QDialog.reject(self)

    def save_match(self) -> None:
        match = self.current_match()
        ca = self.current_match_set.ca

        md = ca.read_metadata(self._style)
        if md.is_empty:
            md = ca.metadata_from_filename(
                self.config.Filename_Parsing_complicated_parser,
                self.config.Filename_Parsing_remove_c2c,
                self.config.Filename_Parsing_remove_fcbd,
                self.config.Filename_Parsing_remove_publisher,
            )

        # now get the particular issue data
        ct_md = self.fetch_func(match)
        if ct_md is None:
            QtWidgets.QMessageBox.critical(self, "Network Issue", "Could not retrieve issue details!")
            return

        QtWidgets.QApplication.setOverrideCursor(QtGui.QCursor(QtCore.Qt.CursorShape.WaitCursor))
        md.overlay(ct_md)
        success = ca.write_metadata(md, self._style)
        ca.load_cache([MetaDataStyle.CBI, MetaDataStyle.CIX])

        QtWidgets.QApplication.restoreOverrideCursor()

        if not success:
            QtWidgets.QMessageBox.warning(self, "Write Error", "Saving the tags to the archive seemed to fail!")
