from PyQt5.QtWidgets import QFrame, QLabel, QListWidget, QMainWindow, QStackedLayout, QToolBar, QAction, QStatusBar, QVBoxLayout, QWidget, QGridLayout, QSpacerItem, QSizePolicy
from PyQt5.QtGui import QIcon, QPixmap
from PyQt5.QtCore import Qt, QSize
import typing

class NixView(QMainWindow):
    
    def __init__(self, *args, **kwargs):
        super(NixView, self).__init__(*args, **kwargs)
        self.setWindowTitle("NixView")

        cw = CentralWidget(self)
        self.setCentralWidget(cw)
        self.create_actions()
        
        self.setStatusBar(QStatusBar(self))


    def create_actions(self):
        self._file_open_action = QAction(QIcon("./icons/nix_open.png"), "Open", self)
        self._file_open_action.setStatusTip("Open nix file")
        self._file_open_action.triggered.connect(self.onFileOpenClick)
        
        self._file_close_action = QAction(QIcon("./icons/nix_close.png"), "Close", self)
        self._file_close_action.setStatusTip("Close nix file")
        self._file_close_action.triggered.connect(self.onFileCloseClick)
        
        self.create_toolbar()
        self.create_menu()
        
    
    def create_toolbar(self):
        self._toolbar = QToolBar("My main toolbar")
        self._toolbar.setIconSize(QSize(32, 32))

        self._toolbar.addAction(self._file_open_action)
        self._toolbar.addAction(self._file_close_action)
        self.addToolBar(self._toolbar)


    def create_menu(self):
        pass
    
    def onFileOpenClick(self, s):
        print("click", s)

    def onFileCloseClick(self, s):
        print("click", s)


class CentralWidget(QWidget):
    
    def __init__(self, parent=None) -> None:
        super().__init__(parent=parent)
        
        splash = SplashScreen()
        stack = QStackedLayout(self)
        stack.addWidget(splash)
        self.setLayout(stack)
        self.setStyleSheet("background-color: white;")
        

class SplashScreen(QWidget):
    
    def __init__(self, parent=None) -> None:
        super().__init__(parent=parent)
        layout = QGridLayout()
        self.setLayout(layout)
        self.setStyleSheet("background-color: red;")
        label = QLabel()
        label.setPixmap(QPixmap("./icons/nixview256.png"))
        label.setAlignment(Qt.AlignCenter)
        
        layout.addWidget(label, 1, 1)
        verticalSpacer = QSpacerItem(20, 40, QSizePolicy.Minimum, QSizePolicy.Expanding)
        verticalSpacer2 = QSpacerItem(20, 40, QSizePolicy.Minimum, QSizePolicy.Expanding)
        hSpacer = QSpacerItem(400, 20, QSizePolicy.Maximum, QSizePolicy.Expanding)
        hSpacer2 = QSpacerItem(400, 20, QSizePolicy.Maximum, QSizePolicy.Expanding)
        layout.addItem(verticalSpacer, 0, 1)
        layout.addItem(verticalSpacer2, 2, 1)
        layout.addItem(hSpacer, 1, 0)
        layout.addItem(hSpacer2, 1, 2)
        frame = QFrame()
        l  = QVBoxLayout()
        l.addWidget(QLabel("Recently opened files:"))
        l.addWidget(QListWidget())
        frame.setLayout(l)
        layout.addWidget(frame, 3, 1)