# Copyright: Ankitects Pty Ltd and contributors
# License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html

from __future__ import annotations

from collections.abc import Callable

from anki._legacy import deprecated
from anki.collection import OpChanges
from anki.decks import DeckId
from anki.models import NotetypeId
from anki.notes import Note
from anki.utils import is_mac
from aqt import AnkiQt, gui_hooks
from aqt.addcards_legacy import *
from aqt.deckchooser import DeckChooser
from aqt.notetypechooser import NotetypeChooser
from aqt.qt import *
from aqt.utils import (
    HelpPage,
    add_close_shortcut,
    ask_user_dialog,
    openHelp,
    restoreGeom,
    saveGeom,
    tr,
)


class NewAddCards(QMainWindow):
    def __init__(self, mw: AnkiQt) -> None:
        super().__init__(None, Qt.WindowType.Window)
        self._close_event_has_cleaned_up = False
        self._close_callback: Callable[[], None] = self._close
        self.mw = mw
        self.col = mw.col
        form = aqt.forms.addcards.Ui_Dialog()
        form.setupUi(self)
        self.form = form
        self.setWindowTitle(tr.actions_add())
        self.setMinimumHeight(300)
        self.setMinimumWidth(400)
        self.setup_choosers()
        self.setupEditor()
        add_close_shortcut(self)
        self._load_new_note()
        gui_hooks.operation_did_execute.append(self.on_operation_did_execute)
        restoreGeom(self, "add")
        gui_hooks.add_cards_did_init(self)
        if not is_mac:
            self.setMenuBar(None)
        self.show()

    def set_deck(self, deck_id: DeckId) -> None:
        self.deck_chooser.selected_deck_id = deck_id

    def set_note_type(self, note_type_id: NotetypeId) -> None:
        self.notetype_chooser.selected_notetype_id = note_type_id

    def set_note(self, note: Note, deck_id: DeckId | None = None) -> None:
        """Set tags, field contents and notetype according to `note`. Deck is set
        to `deck_id` or the deck last used with the notetype.
        """
        self.notetype_chooser.selected_notetype_id = note.mid
        if deck_id or (deck_id := self.col.default_deck_for_notetype(note.mid)):
            self.deck_chooser.selected_deck_id = deck_id

        new_note = self._new_note()
        new_note.fields = note.fields[:]
        new_note.tags = note.tags[:]

        self.editor.orig_note_id = note.id
        self.setAndFocusNote(new_note)

    def setupEditor(self) -> None:
        self.editor = aqt.editor.NewEditor(
            self.mw,
            self.form.fieldsArea,
            self,
            editor_mode=aqt.editor.EditorMode.ADD_CARDS,
        )

    def setup_choosers(self) -> None:
        defaults = self.col.defaults_for_adding(
            current_review_card=self.mw.reviewer.card
        )

        self.notetype_chooser = NotetypeChooser(
            mw=self.mw,
            widget=self.form.modelArea,
            starting_notetype_id=NotetypeId(defaults.notetype_id),
            on_button_activated=self.show_notetype_selector,
            on_notetype_changed=self.on_notetype_change,
        )
        self.deck_chooser = DeckChooser(
            self.mw,
            self.form.deckArea,
            starting_deck_id=DeckId(defaults.deck_id),
            on_deck_changed=self.on_deck_changed,
        )

    def reopen(self, mw: AnkiQt) -> None:
        defaults = self.col.defaults_for_adding(
            current_review_card=self.mw.reviewer.card
        )
        self.set_note_type(NotetypeId(defaults.notetype_id))
        self.set_deck(DeckId(defaults.deck_id))

    def helpRequested(self) -> None:
        openHelp(HelpPage.ADDING_CARD_AND_NOTE)

    def setAndFocusNote(self, note: Note) -> None:
        self.editor.set_note(note, focusTo=0)

    def show_notetype_selector(self) -> None:
        self.editor.call_after_note_saved(self.notetype_chooser.choose_notetype)

    def on_deck_changed(self, deck_id: int) -> None:
        gui_hooks.add_cards_did_change_deck(deck_id)

    def on_notetype_change(
        self, notetype_id: NotetypeId, update_deck: bool = True
    ) -> None:
        # need to adjust current deck?
        if update_deck:
            if deck_id := self.col.default_deck_for_notetype(notetype_id):
                self.deck_chooser.selected_deck_id = deck_id

        if notetype_id:
            self.editor.set_nid(None, mid=notetype_id, focus_to=0)

    def _load_new_note(self, sticky_fields_from: Note | None = None) -> None:
        self.editor.set_nid(
            None, mid=self.notetype_chooser.selected_notetype_id, focus_to=0
        )

    def on_operation_did_execute(
        self, changes: OpChanges, handler: object | None
    ) -> None:
        if (changes.notetype or changes.deck) and handler is not self.editor:
            self.on_notetype_change(
                NotetypeId(
                    self.col.defaults_for_adding(
                        current_review_card=self.mw.reviewer.card
                    ).notetype_id
                ),
                update_deck=False,
            )

    def _new_note(self) -> Note:
        return self.col.new_note(
            self.col.models.get(self.notetype_chooser.selected_notetype_id)
        )

    def add_current_note(self) -> None:
        self.editor.web.eval(f"addCurrentNote({self.deck_chooser.selected_deck_id})")

    def keyPressEvent(self, evt: QKeyEvent) -> None:
        if evt.key() == Qt.Key.Key_Escape:
            self.close()
        else:
            super().keyPressEvent(evt)

    def closeEvent(self, evt: QCloseEvent) -> None:
        if self._close_event_has_cleaned_up:
            evt.accept()
            return
        self.ifCanClose(self._close)
        evt.ignore()

    def _close(self) -> None:
        self.editor.cleanup()
        self.notetype_chooser.cleanup()
        self.deck_chooser.cleanup()
        gui_hooks.operation_did_execute.remove(self.on_operation_did_execute)
        self.mw.maybeReset()
        saveGeom(self, "add")
        aqt.dialogs.markClosed("NewAddCards")
        self._close_event_has_cleaned_up = True
        self.mw.deferred_delete_and_garbage_collect(self)
        self.close()

    def ifCanClose(self, onOk: Callable) -> None:
        self._close_callback = onOk
        self.editor.web.eval("closeAddCards()")

    def _close_if_user_wants_to_discard_changes(self, prompt: bool) -> None:
        if not prompt:
            self._close_callback()
            return

        def callback(choice: int) -> None:
            if choice == 0:
                self._close_callback()

        ask_user_dialog(
            tr.adding_discard_current_input(),
            callback=callback,
            buttons=[
                QMessageBox.StandardButton.Discard,
                (tr.adding_keep_editing(), QMessageBox.ButtonRole.RejectRole),
            ],
        )

    def closeWithCallback(self, cb: Callable[[], None]) -> None:
        def doClose() -> None:
            self._close()
            cb()

        self.ifCanClose(doClose)

    # legacy aliases

    @property
    def deckChooser(self) -> DeckChooser:
        if getattr(self, "form", None):
            # show this warning only after Qt form has been initialized,
            # or PyQt's introspection triggers it
            print("deckChooser is deprecated; use deck_chooser instead")
        return self.deck_chooser

    @deprecated(info="obsolete")
    def addNote(self, note: Note) -> None:
        pass

    @deprecated(info="does nothing; will go away")
    def removeTempNote(self, note: Note) -> None:
        pass