#!/usr/bin/python3

from PyQt6.QtWidgets import QWidget, QFileDialog, QVBoxLayout
from PyQt6.QtGui import QFont
from binary_text_edit import BinaryTextEdit


class FileActions:
    def __init__(self, app):
        self.app = app

    def open_files(self):
        dialog = QFileDialog(self.app.QTMainWindow)
        dialog.setDirectory(self.app.utils.home_path)
        dialog.setFileMode(QFileDialog.FileMode.ExistingFiles)
        dialog.setNameFilters(["Binary (*.bin)", "Any (*)"])
        dialog.setViewMode(QFileDialog.ViewMode.List)

        if dialog.exec():
            for file_path in dialog.selectedFiles():
                if not file_path in self.app.open_files:  # dont open file twice
                    self.app.open_files[file_path] = File(self.app, file_path, file_path.split("/")[-1])

    def save_file(self, path):
        oz_string = self.app.open_files[path].content_binary_input.toPlainText()
        data = self.app.utils.oz_string_to_bstring(oz_string)

        file = open(path, "wb")
        file.write(data)
        file.close()

        self.app.open_files[path].not_saved = False

    def save_current_file(self):
        current_tab = self.app.main_window.openFileTabs.currentWidget()
        current_file_path = current_tab.objectName()

        self.save_file(current_file_path)

    def close_file(self, path, tab_index):
        self.app.main_window.openFileTabs.removeTab(tab_index)
        del self.app.open_files[path]

    def close_current_file(self):
        tab_index = self.app.main_window.openFileTabs.currentIndex()
        current_file_path = self.app.main_window.openFileTabs.currentWidget().objectName()#

        if self.app.open_files[current_file_path].not_saved:
            save_or_not = self.app.utils.unsaved_changes_popup()

            match save_or_not:
                case "save":
                    self.save_file(current_file_path)

                case "cancel":
                    return

        self.close_file(current_file_path, tab_index)

    def save_all_files(self):
        for file_path in self.app.open_files:
            file = self.app.open_files[file_path]

            self.save_file(file.path)


class File:
    def __init__(self, app, path, name):
        self.app = app

        self.path = path
        self.name = name
        self.not_saved = False

        file = open(path, "rb")
        file_content = file.read()
        file.close()

        self.content = file_content

        # the widget that contains all the file content
        self.content_widget = QWidget(self.app.main_window.openFileTabs, objectName=path)
        self.content_widget_layout = QVBoxLayout()

        self.content_binary_input = BinaryTextEdit()
        self.content_binary_input.setOverwriteMode(True)
        self.content_widget_layout.addWidget(self.content_binary_input)
        self.content_binary_input.setPlainText(self.app.utils.bstring_to_oz(file_content))
        self.content_binary_input.setFont(QFont("Ubuntu Mono", 12))
        self.content_binary_input.textChanged.connect(self.on_edit)

        self.content_widget.setLayout(self.content_widget_layout)

        self.app.main_window.openFileTabs.addTab(  # add a tab for the file in the top files list
            self.content_widget,
            self.name
        )

    def on_edit(self):
        self.not_saved = True