import operator
from functools import reduce

from PyQt5.QtCore import Qt
from PyQt5.QtGui import QColor
from PyQt5.QtWidgets import QDialog, QVBoxLayout, QTableWidget, QTableWidgetItem, QHeaderView
from bauh_api.abstract.cache import MemoryCache
from bauh_api.abstract.model import PackageHistory


class HistoryDialog(QDialog):

    def __init__(self, history: PackageHistory, icon_cache: MemoryCache, locale_keys: dict):
        super(HistoryDialog, self).__init__()

        self.setWindowTitle('{} - {} '.format(locale_keys['popup.history.title'], history.pkg.name))

        layout = QVBoxLayout()
        self.setLayout(layout)

        table_history = QTableWidget()
        table_history.setFocusPolicy(Qt.NoFocus)
        table_history.setShowGrid(False)
        table_history.verticalHeader().setVisible(False)
        table_history.setAlternatingRowColors(True)

        table_history.setColumnCount(len(history.history[0]))
        table_history.setRowCount(len(history.history))
        table_history.setHorizontalHeaderLabels([locale_keys.get(history.pkg.get_type() + '.history.' + key, key).capitalize() for key in sorted(history.history[0].keys())])

        for row, commit in enumerate(history.history):

            current_status = history.pkg_status_idx == row

            for col, key in enumerate(sorted(commit.keys())):
                item = QTableWidgetItem()
                item.setText(str(commit[key]))
                item.setFlags(Qt.ItemIsSelectable | Qt.ItemIsEnabled)

                if current_status:
                    item.setBackground(QColor('#ffbf00' if row != 0 else '#32CD32'))
                    tip = '{}. {}.'.format(locale_keys['popup.history.selected.tooltip'], locale_keys['version.{}'.format('updated'if row == 0 else 'outdated')].capitalize())

                    item.setToolTip(tip)

                table_history.setItem(row, col, item)

        layout.addWidget(table_history)

        header_horizontal = table_history.horizontalHeader()
        for i in range(0, table_history.columnCount()):
            header_horizontal.setSectionResizeMode(i, QHeaderView.Stretch)

        new_width = reduce(operator.add, [table_history.columnWidth(i) for i in range(table_history.columnCount())])
        self.resize(new_width, table_history.height())

        icon_data = icon_cache.get(history.pkg.icon_url)

        if icon_data and icon_data.get('icon'):
            self.setWindowIcon(icon_data.get('icon'))