/*
Copyright 2023, Savanni D'Gerinel <savanni@luminescent-dreams.com>

This file is part of FitnessTrax.

FitnessTrax is free software: you can redistribute it and/or modify it under the terms of the GNU
General Public License as published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.

FitnessTrax is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License along with FitnessTrax. If not, see <https://www.gnu.org/licenses/>.
*/

use glib::Object;
use gtk::{prelude::*, subclass::prelude::*};
use std::{
    cell::RefCell,
    path::{Path, PathBuf},
    rc::Rc,
};

pub struct FileChooserRowPrivate {
    path: RefCell<Option<PathBuf>>,
    label: gtk::Label,
}

#[glib::object_subclass]
impl ObjectSubclass for FileChooserRowPrivate {
    const NAME: &'static str = "FileChooser";
    type Type = FileChooserRow;
    type ParentType = gtk::Box;

    fn new() -> Self {
        Self {
            path: RefCell::new(None),
            label: gtk::Label::builder().hexpand(true).build(),
        }
    }
}

impl ObjectImpl for FileChooserRowPrivate {}
impl WidgetImpl for FileChooserRowPrivate {}
impl BoxImpl for FileChooserRowPrivate {}

glib::wrapper! {
    pub struct FileChooserRow(ObjectSubclass<FileChooserRowPrivate>) @extends gtk::Box, gtk::Widget, @implements gtk::Orientable;
}

impl FileChooserRow {
    pub fn new<F>(on_selected: F) -> Self
    where
        F: Fn(PathBuf) + 'static,
    {
        let s: Self = Object::builder().build();

        s.set_orientation(gtk::Orientation::Horizontal);

        // The database selection row should be a box that shows a default database path, along with a
        // button that triggers a file chooser dialog. Once the dialog returns, the box should be
        // updated to reflect the chosen path.
        s.imp().label.set_text("No database selected");

        let db_file_chooser_button = gtk::Button::builder().label("Select Database").build();
        let on_selected = Rc::new(Box::new(on_selected));
        db_file_chooser_button.connect_clicked({
            let s = s.clone();
            move |_| {
                let no_window: Option<&gtk::Window> = None;
                let not_cancellable: Option<&gio::Cancellable> = None;
                let s = s.clone();
                let on_selected = on_selected.clone();
                gtk::FileDialog::builder().build().open(
                    no_window,
                    not_cancellable,
                    move |file_id| match file_id {
                        Ok(file_id) => match file_id.path() {
                            Some(path) => {
                                s.imp().label.set_text(path.to_str().unwrap());
                                on_selected(path.clone());
                                *s.imp().path.borrow_mut() = Some(path);
                            }
                            None => {
                                *s.imp().path.borrow_mut() = None;
                                s.imp().label.set_text("No database selected");
                            }
                        },
                        Err(err) => println!("file opening failed: {}", err),
                    },
                );
            }
        });

        s.append(&s.imp().label);
        s.append(&db_file_chooser_button);

        s
    }

    pub fn path(&self) -> Option<PathBuf> {
        self.imp().path.borrow().clone()
    }
}