#!/usr/bin/env python3

import sys
import signal
from functools import partial

from PySide2 import QtCore, QtGui, QtWidgets
from PySide2.QtWidgets import QMessageBox

from data import Tasks, Log
from exceptions import FimeFrackingException
from new_task import NewTask
from task_edit import TaskEdit
from report import Report


class App:
    def __init__(self):
        self.app = QtWidgets.QApplication(sys.argv)

        self.tasks = Tasks()
        self.log = Log()
        self.active_task = self.log.last_log() or "Nothing"

        icon = QtGui.QIcon.fromTheme("appointment-new")

        self.menu = QtWidgets.QMenu()

        self.new_task = NewTask(None)
        self.new_task.accepted.connect(self.new_task_selected)

        self.taskEdit = TaskEdit(None)
        self.taskEdit.accepted.connect(self.tasks_edited)

        self.reportDialog = Report(None)
        self.reportDialog.accepted.connect(self.report_done)

        self.tray = QtWidgets.QSystemTrayIcon()
        self.tray.setIcon(icon)
        self.tray.setContextMenu(self.menu)
        self.tray.show()
        self.tray.setToolTip("fimefracking")
        self.update_tray_menu()

    @QtCore.Slot()
    def new_task_selected(self):
        print(f"dialog input: {self.new_task.task_text}")

    @QtCore.Slot()
    def tasks_edited(self):
        self.tasks.tasks = self.taskEdit.tasks
        self.update_tray_menu()

    @QtCore.Slot()
    def report_done(self):
        self.active_task = self.log.last_log() or "Nothing"
        self.update_tray_menu()

    def change_task(self, task):
        self.active_task = task
        if task == "Nothing":
            return
        self.log.log(task)
        self.update_tray_menu()

    def update_tray_menu(self):
        self.menu.clear()
        tasks = list(self.tasks.tasks)
        tasks.append("Pause")
        if self.active_task == "Nothing":
            tasks.append("Nothing")

        for t in tasks:
            a = self.menu.addAction(t)
            a.triggered.connect(partial(self.change_task, t))
            if t == self.active_task:
                a.setIcon(QtGui.QIcon.fromTheme("go-next"))

        self.menu.addSeparator()

        new_action = self.menu.addAction("New task")
        new_action.triggered.connect(self.new_task.show)

        new_action = self.menu.addAction("Edit tasks")
        new_action.triggered.connect(self.edit_tasks)

        report_action = self.menu.addAction("Report")
        report_action.triggered.connect(self.report)

        self.menu.addSeparator()

        exit_action = self.menu.addAction("Close")
        exit_action.triggered.connect(self.app.quit)

    def sigterm_handler(self, _signo, _frame):
        self.app.quit()

    def run(self):
        timer = QtCore.QTimer()
        # interrupt event loop regularly for signal handling
        timer.timeout.connect(lambda: None)
        timer.start(500)
        signal.signal(signal.SIGTERM, self.sigterm_handler)
        signal.signal(signal.SIGINT, self.sigterm_handler)
        self.app.exec_()

    @QtCore.Slot()
    def report(self):
        self.reportDialog.set_data(self.log.report())
        self.reportDialog.show()

    @QtCore.Slot()
    def edit_tasks(self):
        self.taskEdit.tasks = self.tasks.tasks
        self.taskEdit.show()


if __name__ == "__main__":
    try:
        app = App()
        app.run()
    except FimeFrackingException as e:
        QMessageBox.critical(None, "Error", str(e), QMessageBox.Ok)