import sys
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import QApplication, QMainWindow, QWidget, QFrame, QHBoxLayout, QPushButton
from PyQt5.QtGui import QIcon, QPixmap
from ui import MainWindow, ManageVendorsTab, SettingsTab, FetchReportsTab, FetchSpecialReportsTab, ImportReportTab,\
    SearchTab, VisualTab, CostsTab
from ManageVendors import ManageVendorsController
from FetchData import FetchReportsController, FetchSpecialReportsController
from ImportFile import ImportReportController
from Costs import CostsController
from Search import SearchController
from Settings import SettingsController, SettingsModel
from Visual import VisualController
import GeneralUtils
import ManageDB
from Constants import *

# region debug_stuff

def trap_exc_during_debug(*args):
    # when app raises uncaught exception, print info
    print(args)


# install exception hook: without this, uncaught exception would cause application to exit
sys.excepthook = trap_exc_during_debug

# endregion

if hasattr(Qt, 'AA_EnableHighDpiScaling'):
    QApplication.setAttribute(Qt.AA_EnableHighDpiScaling, True)

if hasattr(Qt, 'AA_UseHighDpiPixmaps'):
    QApplication.setAttribute(Qt.AA_UseHighDpiPixmaps, True)

if __name__ == "__main__":
    app = QApplication(sys.argv)
    app.setStyleSheet("QWidget {font-family: Segoe UI; font-size: 12pt;}")

    main_window = QMainWindow()
    main_window_ui = MainWindow.Ui_mainWindow()
    main_window_ui.setupUi(main_window)

    GeneralUtils.main_window = main_window

    # region Setup Tab Controllers
    settings_tab = QWidget(main_window)
    settings_ui = SettingsTab.Ui_settings_tab()
    settings_ui.setupUi(settings_tab)
    settings_controller = SettingsController(settings_tab, settings_ui)

    manage_vendors_tab = QWidget(main_window)
    manage_vendors_ui = ManageVendorsTab.Ui_manage_vendors_tab()
    manage_vendors_ui.setupUi(manage_vendors_tab)
    manage_vendors_controller = ManageVendorsController(manage_vendors_tab, manage_vendors_ui, settings_controller.settings)

    ManageDB.update_settings(settings_controller.settings)
    ManageDB.first_time_setup()

    fetch_reports_tab = QWidget(main_window)
    fetch_reports_ui = FetchReportsTab.Ui_fetch_reports_tab()
    fetch_reports_ui.setupUi(fetch_reports_tab)
    fetch_reports_controller = FetchReportsController(manage_vendors_controller.vendors, settings_controller.settings,
                                                      fetch_reports_tab, fetch_reports_ui)

    fetch_special_reports_tab = QWidget(main_window)
    fetch_special_reports_ui = FetchSpecialReportsTab.Ui_fetch_special_reports_tab()
    fetch_special_reports_ui.setupUi(fetch_special_reports_tab)
    fetch_special_reports_controller = FetchSpecialReportsController(manage_vendors_controller.vendors,
                                                                     settings_controller.settings,
                                                                     fetch_special_reports_tab,
                                                                     fetch_special_reports_ui)

    costs_tab = QWidget(main_window)
    costs_tab_ui = CostsTab.Ui_costs_tab()
    costs_tab_ui.setupUi(costs_tab)
    costs_controller = CostsController(costs_tab_ui, settings_controller.settings)

    import_report_tab = QWidget(main_window)
    import_report_ui = ImportReportTab.Ui_import_report_tab()
    import_report_ui.setupUi(import_report_tab)
    import_report_controller = ImportReportController(manage_vendors_controller.vendors, settings_controller.settings,
                                                      import_report_tab, import_report_ui)

    search_tab = QWidget(main_window)
    search_ui = SearchTab.Ui_search_tab()
    search_ui.setupUi(search_tab)
    search_controller = SearchController(search_ui, settings_controller.settings)

    visual_tab = QWidget(main_window)
    visual_ui = VisualTab.Ui_visual_tab()
    visual_ui.setupUi(visual_tab)
    visual_controller = VisualController(visual_ui, settings_controller.settings)

    # # endregion

    # region Connect Signals
    manage_vendors_controller.vendors_changed_signal.connect(fetch_reports_controller.on_vendors_changed)
    manage_vendors_controller.vendors_changed_signal.connect(fetch_special_reports_controller.on_vendors_changed)
    manage_vendors_controller.vendors_changed_signal.connect(import_report_controller.on_vendors_changed)
    manage_vendors_controller.vendors_changed_signal.connect(costs_controller.load_vendor_list)
    manage_vendors_controller.vendors_changed_signal.connect(visual_controller.load_vendor_list)

    settings_controller.settings_changed_signal.connect(ManageDB.update_settings)
    settings_controller.settings_changed_signal.connect(search_controller.update_settings)
    settings_controller.settings_changed_signal.connect(costs_controller.update_settings)
    settings_controller.settings_changed_signal.connect(visual_controller.update_settings)

    ManageDB.managedb_signal_handler.database_changed_signal.connect(costs_controller.database_updated)
    ManageDB.managedb_signal_handler.database_changed_signal.connect(visual_controller.database_updated)
    # endregion

    # region Add tabs to main window
    main_window_ui.tab_widget.addTab(manage_vendors_tab, manage_vendors_tab.windowIcon(), "Manage Vendors")
    main_window_ui.tab_widget.addTab(fetch_reports_tab, fetch_reports_tab.windowIcon(), "Fetch Reports")
    main_window_ui.tab_widget.addTab(fetch_special_reports_tab, fetch_special_reports_tab.windowIcon(),
                                     "Fetch Special Reports")
    main_window_ui.tab_widget.addTab(import_report_tab, import_report_tab.windowIcon(), "Import Report")
    main_window_ui.tab_widget.addTab(costs_tab, costs_tab.windowIcon(), "Costs")
    main_window_ui.tab_widget.addTab(search_tab, search_tab.windowIcon(), "Search")
    main_window_ui.tab_widget.addTab(visual_tab, visual_tab.windowIcon(), "Visual")
    main_window_ui.tab_widget.addTab(settings_tab, settings_tab.windowIcon(), "Settings")

    main_window_ui.tab_widget.setCurrentIndex(1)
    # endregion

    # region Status Bar
    status_bar = main_window_ui.statusbar

    help_frame = QFrame(status_bar)
    help_frame_layout = QHBoxLayout(help_frame)
    help_frame_layout.setContentsMargins(-1, 2, -1, 5)
    help_frame.setLayout(help_frame_layout)
    help_button = QPushButton("Help", help_frame)
    help_pixmap = QPixmap(":/ui/resources/help_icon.png")
    help_button.setIcon(QIcon(help_pixmap))
    help_button.clicked.connect(lambda: GeneralUtils.open_in_browser(HELP_SITE))
    help_frame_layout.addWidget(help_button)

    status_bar.addWidget(help_frame)
    # endregion

    main_window.show()
    sys.exit(app.exec_())