rapnote/file_operations.py at master · codebdbd/rapnote · GitHub

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"""File operation helpers for RapNote main window."""

from __future__ import annotations

from typing import TYPE_CHECKING

from PyQt6.QtWidgets import QFileDialog, QMessageBox

from logic import export_txt, import_txt
from model import Project, load_project, save_autosave, save_project

if TYPE_CHECKING:
    from ui import MainWindow


class FileOperations:
    """Handle project file lifecycle for the main window."""

    def __init__(self, window: "MainWindow") -> None:
        self._window = window

    def confirm_discard_if_modified(self) -> bool:
        if self._window.is_modified:
            res = QMessageBox.question(
                self._window,
                self._window.i18n.t("UNSAVED_TITLE"),
                self._window.i18n.t("UNSAVED_Q"),
                QMessageBox.StandardButton.Yes | QMessageBox.StandardButton.No,
            )
            return res == QMessageBox.StandardButton.Yes
        return True

    def file_new(self) -> None:
        if self._window.is_modified:
            save_autosave(self._window.project)
        if not self.confirm_discard_if_modified():
            return
        self._window.project = Project.new_default()
        self._window.i18n.lang = self._window.project.lang
        self._window.current_path = None
        self._window.active_block_id = self._window.project.blocks[0].id
        self._window.apply_language_to_ui()
        self._window.apply_project_to_controls()
        self._window.rebuild_all()
        self._window.mark_modified(False)

    def file_open(self) -> None:
        if self._window.is_modified:
            save_autosave(self._window.project)
        if not self.confirm_discard_if_modified():
            return
        path, _ = QFileDialog.getOpenFileName(
            self._window,
            self._window.i18n.t("OPEN_PROJECT"),
            "",
            self._window.i18n.t("FILTER_RAPNOTE"),
        )
        if not path:
            return
        try:
            project = load_project(path)
        except Exception as exc:  # pylint: disable=broad-except
            QMessageBox.critical(self._window, "Open failed", str(exc))
            return
        self._window.project = project
        self._window.current_path = path
        self._window.active_block_id = self._window.project.blocks[0].id if self._window.project.blocks else None
        self._window.i18n.lang = self._window.project.lang
        self._window.apply_language_to_ui()
        self._window.apply_project_to_controls()
        self._window.rebuild_all()
        self._window.mark_modified(False)
        self._window.statusBar().showMessage(self._window.i18n.t("OPENED"), 2000)

    def file_save(self) -> None:
        if not self._window.current_path:
            self.file_save_as()
            return
        try:
            save_project(self._window.project, self._window.current_path)
        except Exception as exc:  # pylint: disable=broad-except
            QMessageBox.critical(self._window, "Save failed", str(exc))
            return
        self._window.mark_modified(False)
        self._window.statusBar().showMessage(self._window.i18n.t("SAVED"), 2000)

    def file_save_as(self) -> None:
        path, _ = QFileDialog.getSaveFileName(
            self._window,
            self._window.i18n.t("SAVE_PROJECT"),
            "",
            self._window.i18n.t("FILTER_RAPNOTE_ONLY"),
        )
        if not path:
            return
        if not path.lower().endswith(".rapnote"):
            path += ".rapnote"
        self._window.current_path = path
        self.file_save()

    def file_import_txt(self) -> None:
        if self._window.is_modified:
            save_autosave(self._window.project)
        if not self.confirm_discard_if_modified():
            return
        path, _ = QFileDialog.getOpenFileName(
            self._window,
            self._window.i18n.t("IMPORT_TXT_FILE"),
            "",
            self._window.i18n.t("FILTER_TXT"),
        )
        if not path:
            return
        try:
            blocks = import_txt(path)
        except Exception as exc:  # pylint: disable=broad-except
            QMessageBox.critical(self._window, "Import failed", str(exc))
            return
        if not blocks:
            QMessageBox.information(
                self._window,
                self._window.i18n.t("IMPORT_TXT_EMPTY_TITLE"),
                self._window.i18n.t("IMPORT_TXT_EMPTY_MESSAGE"),
            )
            return
        self._window.project.blocks = blocks
        self._window.current_path = None
        self._window.active_block_id = blocks[0].id
        self._window.apply_project_to_controls()
        self._window.rebuild_all()
        self._window.mark_modified(True)
        self._window.statusBar().showMessage(self._window.i18n.t("IMPORTED_TXT"), 2000)

    def file_export(self) -> None:
        path, _ = QFileDialog.getSaveFileName(
            self._window,
            self._window.i18n.t("EXPORT_FILE"),
            "",
            self._window.i18n.t("FILTER_TXT"),
        )
        if not path:
            return
        if not path.lower().endswith(".txt"):
            path += ".txt"
        try:
            export_txt(self._window.project, path)
        except Exception as exc:  # pylint: disable=broad-except
            QMessageBox.critical(self._window, "Export failed", str(exc))
            return
        self._window.statusBar().showMessage(self._window.i18n.t("EXPORTED"), 2000)

    def file_export_json(self) -> None:
        path, _ = QFileDialog.getSaveFileName(
            self._window,
            self._window.i18n.t("EXPORT_FILE"),
            "",
            self._window.i18n.t("FILTER_JSON_ONLY"),
        )
        if not path:
            return
        if not path.lower().endswith(".json"):
            path += ".json"
        try:
            save_project(self._window.project, path)
        except Exception as exc:  # pylint: disable=broad-except
            QMessageBox.critical(self._window, "Export failed", str(exc))
            return
        self._window.statusBar().showMessage(self._window.i18n.t("EXPORTED"), 2000)

    def mark_modified(self, modified: bool) -> None:
        self._window.is_modified = modified
        title = self._window.i18n.t("APP_TITLE")
        if self._window.current_path:
            title += f" — {self._window.current_path}"
        if modified:
            title += " *"
        self._window.setWindowTitle(title)

    def close_event(self, event) -> None:
        if not self.confirm_discard_if_modified():
            event.ignore()
            return
        event.accept()