import os
import functools
from enum import Enum

from PyQt5.QtWidgets import QDialog, QVBoxLayout, QWidget, QCommandLinkButton, QListWidgetItem
from PyQt5.QtGui import QPixmap
from PyQt5.QtCore import Qt
from PyQt5 import uic

from util import str_compare
from ui.welcome.recent_project import RecentProjectWidget
from ui.welcome.welcome_dialog_ui import Ui_WelcomeDialog

class WelcomeDialogResult(Enum):
    NewProject = 0
    OpenProject = 1
    OpenRecentProject = 2

class WelcomeDialog(QDialog):

    def __init__(self, projectManager):
        super().__init__()
        self.__projectManager = projectManager
        self.__resultAction = None
        self.setResult(QDialog.Rejected)
        self.setupUi()
        self.setupActions()
        self.populateRecentProjects()

    def setupUi(self):
        self.ui = Ui_WelcomeDialog()
        self.ui.setupUi(self)
        self.image = QPixmap(self.ui.picture.pixmap())

    def setupActions(self):
        self.ui.buttonNewProject.pressed.connect(self.newProjectPressed)
        self.ui.buttonOpenProject.pressed.connect(self.openProjectPressed)

    def resizeEvent(self, event):
        super().resizeEvent(event)
        
        picSize = self.ui.picture.size()
        pic = self.image.scaled(picSize, Qt.KeepAspectRatioByExpanding, Qt.SmoothTransformation)
        self.ui.picture.setPixmap(pic)

    def populateRecentProjects(self):
        projects = list(self.__projectManager.getRecentProjects())
        projects = sorted(projects, key=lambda x: (x['pinned'], x['date']), reverse=True)
        
        for project in projects:
            item = QListWidgetItem(project['name'])
            item.setData(Qt.UserRole, project)
            widget = RecentProjectWidget(project)
            item.setSizeHint(widget.sizeHint())

            self.ui.listRecentProjects.addItem(item)
            self.ui.listRecentProjects.setItemWidget(item, widget)

    def newProjectPressed(self):
        self.__resultAction = WelcomeDialogResult.NewProject
        self.accept()

    def openProjectPressed(self):
        self.__resultAction = WelcomeDialogResult.OpenProject
        self.accept()