use godot::{
    classes::{Control, IControl, Label, LinkButton, MarginContainer, VBoxContainer},
    prelude::*,
};

use crate::credits::{CreditPerson, Credits};

const CREDITS: &'static str = include_str!("../../../credits.toml");

#[derive(GodotClass)]
#[class(base=Control, tool)]
pub struct CreditsMenu {
    #[export]
    credits_container: Option<Gd<VBoxContainer>>,

    credits: Credits,

    base: Base<Control>,
}

#[godot_api]
impl IControl for CreditsMenu {
    fn init(base: Base<Self::Base>) -> Self {
        let credits = toml::from_str(CREDITS).unwrap_or(Default::default());

        CreditsMenu {
            credits_container: None,
            credits,
            base,
        }
    }

    fn ready(&mut self) {
        if let Some(container) = &mut self.credits_container {
            for child in container.get_children().iter_shared() {
                container.remove_child(&child);
            }
        }

        for person in self.credits.people.clone() {
            self.add_credit(person);
        }
    }
}

#[godot_api]
impl CreditsMenu {
    pub fn add_credit(&mut self, credit: CreditPerson) {
        if let Some(container) = &mut self.credits_container {
            let mut margin = MarginContainer::new_alloc();
            margin.add_theme_constant_override("margin_bottom", 15);

            let mut vbox = VBoxContainer::new_alloc();

            let name = if let Some(uri) = credit.link {
                let mut link = LinkButton::new_alloc();
                link.set_text(&credit.name);
                link.set_uri(&uri);
                link.upcast::<Control>()
            } else {
                let mut label = Label::new_alloc();
                label.set_text(&credit.name);
                label.upcast()
            };

            vbox.add_child(&name);

            for credit in credit.credits {
                let mut credit_margin = MarginContainer::new_alloc();
                credit_margin.add_theme_constant_override("margin_left", 20);

                let credit = if let Some(uri) = credit.link {
                    let mut link = LinkButton::new_alloc();
                    link.set_text(&format!("- {}", credit.credit));
                    link.set_uri(&uri);
                    link.upcast::<Control>()
                } else {
                    let mut label = Label::new_alloc();
                    label.set_text(&format!("- {}", credit.credit));
                    label.upcast()
                };

                credit_margin.add_child(&credit);
                vbox.add_child(&credit_margin);
            }

            margin.add_child(&vbox);
            container.add_child(&margin);
        }
    }

    #[func]
    pub fn close(&mut self) {
        self.base_mut().queue_free();
    }
}